EEVblog 1459 - Is it worth PARTS SALVAGING an Inkjet Printer/Scanner?
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- เผยแพร่เมื่อ 19 มิ.ย. 2024
- Is it worth salvaging parts from a consumer HP office Inkjet Printer/Scanner from the dumpster?
Scrapping a dumpster laser printer for parts: • EEVblog #1302 - Scrapp...
Forum: www.eevblog.com/forum/blog/ee...
00:00 - Dumpster HP Officejet Pro 8710
05:12 - The main PCB
08:50 - The scanner
11:43 - The scanner sensor
12:37 - The print head
19:52 - You can't be serious? The used Ink capture system
22:13 - The power brick
24:18 - THAT'S all we got? LOL
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#ElectronicsCreators #Dumpster #Salvage - วิทยาศาสตร์และเทคโนโลยี
7:35 That "optocoupler" is actually a transformer - way more interesting than an opto! ("T2" is a hint ;) but I know the camcorder screen isn't always very detailed!)
I'm struggling to find any "official"/"proper" Google results for it, but there are image results showing the inside/bottom(?), plus AliExpress results, etc. The package markings look like "IAASUPREME IP950006A H1", but it looks like it might actually be "AASUPREME P950006…", but with confusing extra lines down one side 🤔
_[edit: s/P90006/P950006/ 😅]_
Oh, yeah, didn't notice that.
@@EEVblog The reason why this printer does not turn on anymore is because the printer head gots too hot so it got a short circuit inside. You can see this because one of the nozzle rows - i think for the black ink - is just baked. If this happens the logic board dies also and gets another short circuit and that will kill the power supply. So you can throw all in the trash. Maybe you can keep the motors and some tiny parts but the rest is junk.
@@crazycrow6596 it's a feature, buy more printers every year!
@@EEVblog sir, maybe the st main chip was salvageable, but unfortunately it looks like a customer chip. i doubt it's a st mpu nowadays it cost fortune, but it's hard to find its datasheet.
@@gg-gn3re I've always believed that these inkjet printers are specifically designed to be replaced at regular intervals. Especially those from HP, Epson, and Cannon.
Edit: They are definitely intentional e-waste. Completely unservicable, except for the high end models that no one buys.
Theres only one good reason to "salvage" a printer: to make it feel the same pain I felt while dealing with them.
th-cam.com/video/N9wsjroVlu8/w-d-xo.html
may their cogs squeal in pain, and their shafts bend uncomfortably.
Lol.
I always put a name tag on office printers "My Name is: Bob Marley"
Because they always be jammin'
Why does it say paper jam when THERE IS NO PAPER JAM???
@@AndrewFremantle A link I can see before clicking. Magnificent.
The ink tank system appears to be much better than the cartridge system th-cam.com/users/postUgkxciSwynMJ7PnUvvx11rewiu-yFBkZTl53 and a lot cheaper to run. The machine was easy to set up. A small point but I thought they'd be a USB cable included to help with the set up but there was none. I've been using it now for a few weeks and it seems like a good product and superior to my previous printers which were all troublesome HP machines.
Given the price of printer ink... that sponge is worth its weight in gold. 😜
I usually save the screws out of various devices and make my best attempt to gauge and sort them in a bin. Lots of M2's, M3's, M4's, M5's, etc. Has come in handy many times when a project is missing a special screw.
The sheer number of printers that get binned amazes me. Verge collection is littered with them every time. I find them a good source of modular power supplies and steel shafts and that's about where it ends. Never pulled apart a larger, commercial type unit.
It's what happens when printers have become a vehicle for selling ink and their actual costs to manufacture have been optimized out for decades now into the hunks of plastic seen in the video.
Well would you buy a $60 ink cartridge for your 2 / 3 year-old printer that you aren't sure even works anymore, or just buy a new printer for $45 to print the 1 thing you need to print this year.
Some multi function printers use industry standard stepper motors.
Tell you what, you need a bloody dumpster room to dispose of the disassembled pile-o-crap! Worst part about trying to use them as a source of parts.
@@Stoneman06660 Which is 99% useless plastic and metal sheets made out of 50% air.
A question: Do your children enjoy tearing things apart? I think they would learn a lot (I know I did) by tearing things down as a kid. One major benefit of tearing things down is *learning* how things work. For a young engineer starting off, learning about manufactured goods and how assemblies go together is a treasure-trove of information. The small amount of salvage parts may not make much difference to you, but an aspiring engineer would be glad to get a few parts to tinker with - this goes for both Mechanical and Electrical Engineers - and especially for Mechatronics Engineers, who need to learn both skills. Great video, it is worth more than you think, since there are young engineers and students out there who get to see this and might be inspired to do it themselves. Great video and awesome channel, as always. Cheers!!
ABSOLUTELY YES!! That’s exactly me. I encourage you to look at my detailed teardown videos. (I may be teen now but my interest haven’t changed) however, I do know that there are not many kids like myself.
This is why I make electronic videos and teardowns. I want to show other people my age that there is an amazing world of electrical engineering.
When I was a kid that’s how I learned! I would take apart literally anything broke and eventually at around age 13 or some things actually went back together fixed. My parents where pretty impressed and that positive feedback and their encouragement was what brought me to a career in IT.
Maybe Dave does this off screen ?
I was nicknamed Roddy the wrecker by one of my brothers because everything that was placed in front of me was immediately disassembled with nothing more than kitchen utensils 🤣
You would be amazed at what can be disassembled with a steak knife, a butter knife and a teaspoon !
I think it's not safe for kids
Those leds around screen are actually IR leds and IR detectors used to detect finger pressing the screen. It detects position of finger by x an y beams are interrupted. Plastic around screen is used then to direct those beams acros the screen.
Totally missed that. That makes sense.
That's the OLD school way of doing it. Surprised it's not cheaper to just use a digitizer given how ubiquitous touch LCD panels are now.
Oh so that's why they're so shit.
just like the kindle
This kind of e-wasting should be made just as illegal as the #@! DRM on those cartridges. Force the manufacturers to open standardise the ink cartridges themselves or be denied sales throughout the EU.
Inkjet printing technology is incredibly wasteful even by itself. The heads need to be washed and wiped regularily (with the same ink of course as there is no otger liquid in the printer available to do that) and then the ink dries up again and another cleaning is required. Even if you do color prints on a daily basis then having an inkjet printer is just barely justifiable and it is a complete insanity otherwise.
Laser printers are just much better in every respect. You can leave one on your shelf for a year and then you turn it on and it just prints straight away with no extra time or consumables wasted. And the cartridges may last for years depending on how often and how many pages you need to print. The only real downside to them is the toner, the nasty tiny colored plastic particles most of which don't get used by the printer and slowly but inevitably find their way out of the printer and then fly everywhere in your room. But that is a very minor issue, overall the technology is much better, there is just no contest.
Even better, make the brains standardized and upgradable. Or at the very least keep up driver support. My daily driver printer is an ancient LaserJet 1022 that I got for $5, works perfectly in Linux using the open source drivers but of course doesn't work at all in more consumer OSes.
@@spagamoto We don't really need standard brains, just a universal standardized printing data format, a standard printer exchange protocol and universal drivers available for most popular OS-s would be enough. You would just look for a label on the box with something like "100% UniPrint std. compatiable" on it and know that with the device at least all the software stuff is not going to ever create any issues for you.
I am not sure though that this is any more realistic scenario than having just a single or 2 printer controller PCB manufacturers for all our printers...
In that case the open standard should be done in a way that won't prohibit attaching an auto-refill system or practice of refilling cartridges in general
@@aleksandertrubin4869 That is a separate problem that would probably be outside of scope of a printing data exchange standard that would only focus on insuring complete software compatiability with any personal computer or any other possible source of printing data (cash registers, industrial controllers, et.c.).
This DRM crap is something only government regulation can truely eliminate. Or a universal controller like already proposed in the messages above can try to fight it to some extent but I would not count on that anytime soon.
If you do hardware prototyping you should collect springs. They're no fun to buy.
Took an older HP ink jet apart some years ago.
Worth it for me, especially for the motors and injection molded gears, they're better than my 3D printed ones ...
Good point. I need some gears.
Hi again Dave. Thanks for another vid :-) A few motors, power supply, IR sensors, maybe a couple of belt or springs.. they are fab for the parts draw. But what i love most about disassembly, is the dfisassembly itself. Cutting and gutting get understanding how, and what, the things are made and of. Those tranport bars / linear rails, are really handy. They heavy, well balanced, perfectly smooth and resonably strong. I'd use those (after a bit of shaping, not welding it'd just make them too twistable) for extending the reach of drill type screwdrivers/nut spinners.
That's the main reason I do it 🤠
those steel rods and gears are nice to have. Cold cathode tubes still sell for a lot. I salvaged a printer recently, and one of the parts from the scanner was $78 on ebay. Just those parts you salvaged are easily $20-40 and for a young hobbyist well worth it. In theory, it should have everything needed to build a 3d printer except for the extruder.
You can't build a 3d printer with inkjet parts, i've tried and the 7.5 deg/step steppers that you find in these are terrible.
Maybe if you use leadscrews and not belts (like i did) but even then those steppers are only good for full steps because they absolutely hate microstepping or even half-stepping.
Do they *sell* for a lot or just *list* for a lot though? lol
@@poptartmcjelly7054 I have 0.9 deg/step steppers on my 3d printer.
Do you mean the Charge-Coupled Device or the bulb or are they together? i just threw one out, maybe I should have taken it out : (
@@poptartmcjelly7054 That assumes you can even find steppers in there in the first place. Very few have steppers these days, most use just normal DC motors and incremental encoders like in this video.
I salvage these things mostly for their mechanical parts: stepper motors, axles, ribbon cables, springs and rollers ... a nice PSU and a high-quality piece of glass. Stuff I use quite a lot in my mock-ups...
Back in the VHS days, it absolutely made sense to do a deep tear-down.
There were only two primary 'mechanical guts' providers.
Parts from a Matsushita deck fit any other Matsushita, for example.
JVC decks, same-same.
The electronics, cabinets and such had much less value.
Disassembled in Australia! Well played - made me rewind to check it.
5:28 I always salvage wire like that because I always end up using it for various projects on my RC models. You don't use PCBs to run headlight wiring across a 1/7 buggy or make servo cable extensions for a 110" wingspan B-24!
same here. I always keep small gauge wire for projects.
Are the motors any good for rc?
@@aus_life Maybe if you're making some sort of ant weight battlebot on a tight budget or trying to RC a lego contraption, but they're pretty weak so don't expect to build anything particularly fast with them. On a faster model they'd be better suited for making a cooling fan for another component, or a pump, something like that.
That linear rail is useful, usually hard and accurately ground. Anyone who has a lathe will understand what I'm talking about
That's what I like from them - the rails and occasional bearings on them. Always a standard diameter, straight as an arrow and smooth. Lots of good uses for them.
That's what she said.
That was about the one good part I got from a giant photo printer I tore down a while back. I welded it to a pair of vise grips to make a great big nasty slide hammer. Most everything else was just more trash for the trash gods.
In order to keep the prints heads from clogging, they must slowly ooze out ink when the printer is not in use. All your money spent on those cartridges and the ink just drips away.
_I'm sure the manufacturers are trying real hard to stop all that waste._
Mine (not this printer) just clogs. Unclogging them using the software wastes ink like crazy. I bought a syringe thing with cleaning fluid on ebay. Works a treat.
That's what they want you to think
Inkjets always clog, you cannot engineer them to not have the ink dry out if occasionally used.
They are therefore pretty much useless for occasional use. Better off taking the file to OfficeWorks or similar commercial printing place. Or, use the work printer LOL
@@johncoops6897 I would recommend a color laser printer they are expensive but a toner cartridge lasts forever
Printers are good source for cylindrical rods and their clips 😀
Yip, hobby machinist here, plenty of stainless rods in laser drums and toners.
@@JamesChurchill3 thanks I wasn't sure they were (in general) SS rods :P
@@stanatqc The ones I've found are. Must be for rust resistance if they're used in humid environments, you can tell as they aren't magnetic, 316 probably, they definitely aren't free machining but better than nothing.
Recently did this with my own similar model HP multifunction printer and was likewise disappointed with the results. I also kept some of the larger flat plastic panels thinking they might be useful. But yeah, mostly garbage. Crying shame these are disposable devices these days. Cheaper to just buy a new printer instead of new ink cartridges. More landfill waste.
Brother MFC laser color printers last absolutely forever, invest once and then you will save much frustration down the line!
@@raiden72 but the brother mfc cost a fortune to run, never getting another one after the last one. Ink tanks are the way to go heaps cheaper than toner on a lazer
@@patty4730 anyone that's ever had an inkjet printer for more than one year knows that the ink dries out over a couple months and you have to keep buying ink every single year. Enjoy your recurring costs and buying a new printer wants to ink stops printing well. HP has a lovely racket with this business
@@raiden72 ink tank printers look them up, you buy ink by the litre not the milli litre. Cheaper than toner by a country mile, you can use any suitable ink you like with the tank but they charge you more for the printer up front knowing full well they will never make the money out of you on the ink.
@@patty4730 "Yes, it is a lot more work to maintain than a laser printer. The heads need LOTS of cleaning way too often, but the printers deliver."
I'm not prepared to do this boring maintenance. I want to swap out a quick tonor cartridge for $40 every 2-3 years, thanks. The tonor printers self clean.
I purchase this line of HP printers, the included ink is less than 50% of a new ink cartridge. To add insult to injury, sitting idle these printers will slowly dump ink into the cleaning (19:52) ink capture system (sponge). If you search online, the manufacturer's excuse for this is done to maintain print quality. Eventually, you will run out of colour ink and the printer won't let you print with just the Black Cartridge and again the excuse is, some colour ink is required to print the best black possible. Its a racateering buisness.
Plus they need some yellow to add the tracking dots
The InkJet technology is inherently flawed, and no manufacturer can solve that. We want the ink to dry quickly after printing, but how to stop it clogging the hundreds of tiny holes in the print head?
I've read of a way to unclog the Epson printers by using blotting paper and Windex Original, You pretend to change the cartridge, which un-docks the print head and moves it over the damp blotting pad you have put in a strategic place along the rail. While that soaks you clean out the sponge, etc. After a few goes the ink melts out and you can get the printer running again without running the wasteful head-cleaning routines.
@@virtualtools_3021 Oh yeah forgot about that :)
@@johncoops6897 Thankfully in the office the printers dont sit idle enough to dry up. In the past, I would put the end of a print cartridge in a small dish with warm water that would soften up the ink and then using a sponge or lint free cloth blot it clean.
@@johncoops6897 This dicking around with inkjet printers is just the worst. The last thing I want to do when I get coerced into printing something is to unclog the damn nozzles in addition to fixing the notorious software issues.
I tell most people nowadays that Inkjet has no purpose at all; if you print a lot its too expensive, if you print too little it wastes all ink on cleaning and/or dries out. LED toner printers cheap enough that the only drawback is their larger size.
There is so much good engineering and investment in tools that goes into making a machine like this, and then they stuff them full of DRM to prevent you from using whatever ink you want, and on top of that it's almost impossible to buy a new print head once the one installed inevitably clogs a few nozzles. And so all it's good for is landfill.
Pisses me off.
I remember when the store I worked for was selling some ink-jet printers for $39. The replacement inks were $40.
Have to wonder how many hundreds of dollars of ink is in that waste area, probably several full cartridges of each color. That little vacuum pumps job is to suck your expensive ink out in the name of "cleaning". I gave up on inkjets a bunch of years ago, I only print a few pages a month but was going through several ink cartridges a year. They either dry out or get used up by the periodic cleaning the printers do. What I have saved on ink over several years is now more than what I paid for a color laser and I'm still on the toner that came with the printer. Now when I go to print it just works every time even if I haven't printed in a month.
I’ve seen some printers with ink dumps that where COMPLETELY full of sludge, to the point where it was nearly overflowing and you cannot see the sponge. This is where your ink goes!
Really depends on your goals. For miniature and sculpture work, they're a treasure trove of odd bits!
A friend has around 12 working laser printers that he salvaged from dumpsters. He has both A4 and A3 printers. He said that most only required minimum repairs to get them working.
A good laser is the bomb. Always ready, very little fuss.
I salvaged a color laser printer, I haven't figured out how to fix the one issue it has, it adds magenta streaks when printing in color, bit t at least grayscale is perfect
@@virtualtools_3021 This may mean at best some cleaning is required or at worst a new magenta toner. See e.g. Brother USA answer 59825 for some hints that may apply to yours as well.
@@virtualtools_3021 Is it possible to print with only the black toner?
I've found one color laser Xerox printer which is complaining for two colors that are low on toner. Black has enough though.
@@worroSfOretsevraH on mine I set it to greyscale on the printer's own menu
When I was a kid in the 70's you could find real treasures in the neighbor's junk - old radios, TVs with lots of salvageable parts. My parents were less understanding of the boxes I was piling up in the basement.
I had so much shit with this HP printer that ended up gaslighting me with its firmware that somehow made the printheads all behave as if their perfectly good nozzles were fecked up by my use of aftermarket inks I smashed it to pieces and threw it in the dumpster. HP are the worst company on the planet and piss on the grave of the founders.
Not only HP, even Epson is able to do suicide after it realises that someone put aftermarket ink it. It was not your fault, these things are supposedly made to fuck self up. And you cannot reverse this by obtaining fresh "original" inks... It stays ducked* forever. Sadly.
Even their commercial printing products are junky
The founders were cool guys. Blame the suits that run the company now.
Need a hug?
@@MartinNyxel Been there myself. I was able to restore it by replacing the print heads. The printer was fine otherwise, so I avoided binning the whole thing. Still borderline evil product design.
Make sure to keep the screws for anything you salvage, never know when those will come in handy, also a few sheets of glass are nice to keep around, you could make a mini solar panel or use it in a project, for example if you make or 3d print some sort of enclosure it'd be nice to use as a window, maybe even cut it into bits to repair a busted cabinet or whatever.
Very true! I have genuinely found plastic self tappers useful for things like c13 sockets on chassis, that I otherwise couldn't mount. Or other things like .. blanking plates on my own gear.
glass can be useful also for just being a very flat surface - the only part I use from a printer I dissasembled few years back, great for sanding or glueing things flat
Those screws have double thread. Surprises me the provide sufficent self-locking given the small diameter. In other material they may or may not be self-locking.
I've found the common failure mode on these HPs is a generic head error. Back in the '90s and early 2000s the ink purge trays used to be removable so you could clean them out. I serviced some printers where the first tray was so full the ink would just spray back up into the printer.
Dave, that's not the printer from the dumpster. The school sent it over. It has a bad power cord and they want to know if you have another one that will fit it.
The glass scanner bed can come in handy too! I used one as bed for a 3d printer for awhile, and used a glass cutter to make small covers for windows on other projects.
Edit: save all the gears too if you're into robotics!
That line scanner board that you're saving for a future video is an engineering marvel. I assume you noticed the long, extremely narrow gray ridge, which is the CMOS imager IC. It is composed of several shorter segments which are precisely butt-joined at their ends to maintain colinearity and pixel pitch down the entire length. The segments are naked silicon. If memory serves i seem to recall that the saw kerf width is actually wider than the die strip, so the majority of a wafer's material is destined to become dust rather than useful IC.
I once tore down a business-class laser printer/copier/scanner thing down to the individual component level. Got a lot of cool stuff out of it, but it took days, and -- good lord -- it was astonishing and humbling for all the reasons explained in this video: the amount of crazy geometric engineering that goes into one of those things is sickening to contemplate. I could not believe how many intricate pieces of stamped and bent pieces of sheet metal, custom plastic moldings, byzantine wire routing, tuned optics, and so many gears and belts and sensors and on and on and on. And to think that they probably made that unit for a couple of years and then it was on to the next model... amazing. They are complicated futuristic robots that don't happen to move around, and we just throw them out like nothing happened. As far as consumer goods, I think only the tape-based miniature digital video cameras were as or more impressive in terms of the degree of 3D puzzle solving that would be involved in their design and manufacture. The level of engineering in casual goods of the modern world is just mind-blowing.
I'd probably keep the matching worm-wheel on the worm gear drive - with 3D printing magic it's pretty easy to make it useful for something else (and the motor has an encoder on the backside too).
One bit that doesn't seem to appear anywhere else are those plastic fine printed linear and rotary encoder cards, so I would probably keep those - again with home 3D printing easily re-used for a project that needs that little bit more digital measurement.
Had a bunch of dead printers laying around and taking space for years. Thank you for inspiration to salvage them finally.
I do it because I enjoy doing it.
I get the most use out of basic components, precision ground rods and rails, and the glass.
Laser printers are usually a bit more interesting than inkjet. I used to work with Canon copiers and Oce wide format plotters. The mechanical and electrical design was always very complex and amazing. They made really good repair guides too.
It occurs to me to wonder what the plastics the major plastic parts are made of. If you're in to home injection molding, you might be able to reprocess some. ABS gets used for a lot of this sort of casings, which can be reprocessed at home for 3D printing.
I salvaged parts out of my old Konica Minolta laser printer (colour)
I was surprised that it had only one stepper motor to drive everything. It utilised a bunch of gears, solenoids and mechanical friction couplers to redirect the motor drive to various places.
I got a bunch of optical sensors out of it though.
I have recently torn out some linear scan pcb thingies and I found some very interesting different designs. I love how you can see the gold bonding wires attached to the silicon die *at least I think that's what is going on*. It's just crazy engineering built down to a cost and it blows my mind.
The leds on the back of the lcd are probably for touch sensing, two sides populated by ir emitters, two sides populated by photodiodes.
Dave, thanks for doing the teardown on this! I work on these from time to time, but mainly the drafting plotters. The HPs are much more technician friendly than other brands. The unidentified motor and pump head supplies vacuum to prime and clean the printhead. The waste ink goes into the spittoon, where the foam is. Despite their pedestrian use, there's quite a bit of engineering inside. Maybe I missed the part where you found the scanner cameras? They're worth as much alone as the rest of the printer. Carry on!
I also take the glass out and make a wooden picture or a painting frame out of it. BTW, on some of the higher end printers, you can get a not too shabby stepper motor which always comes handy!
Nice overview with the same conclusion I got from tearing down an ink jet to salvage parts: It's really a big waste of time and the assembly is so complex that it takes a very long time to figure out how to get the plastic parts disconnected.
Nice exploring trip. Thanks for the look.
I tore an MFP apart with my 4 year old last week. We made lots of little toys with springs, a "brush bot" with the only DC motor, and I saved all the steppers for my hobbies. She had the most fun playing with the plastic gears.
That light pipe off the scanner with it's attached RGB LED... if you get several of them you can make some interesting light feature/displays
Also the encoder tape and discs are pretty high resolution, they also usually come with a quadrature sensor which means you can determine direction as well as distance.
Depending on the specific vintage of this printer, there may be an additional motor in the automatic document feeder (ADF) in the (edit: scanner) lid. Some of the newer/cheaper ones actually drive the ADF with an exposed cog and share a motor with something else. I have a 6000-series printer of the same lineage we got ~10 years ago, and it's been fairly dependable. We use a refill kit and just ignore HP's whiny messages about ink. 😁 Looking forward to your analysis of the scan head! 👍️
Office Space still has the best way to deal with them.
If you're a woodworker, old flat-screen displays usually have a nice piece of flat thick plastic that are great for making custom base-plates for your trim router.
The sponge is called a spittoon. This is used in cleaning the print head. Yes, they mess all over the place. My old Epson Photo 1800 has a microprocessor that stops the printer after printing X 1000 number of sheets to replace the said spittoon. When my printer locked out, The troubleshooter on the website said there were no spittoons left and they will discontinue the ink cartridges for this model. The reset disk cost a pretty penny to reset the micro to resume printing. Cheaper to buy an new one and pay the exorbitant dollars to buy the new cartridges.
Dave, I know you say that the surface mount components are pretty worthless, but I disagree. I'm a disabled Air Force Veteran in the US & I am barely living on the just under $300 per month in disability compensation, and since I went from homeless to living in low-income housing back in 2015, all of those are good to me. I have nothing and can't afford much, so I would take the time to desolder them so I could have an assortment of components to work with. It's mainly a hobby but really love doing this kind of stuff, electronics and repairs. I know it's not for everyone but when you can't afford to buy tools and other equipment for repairing and testing electronics you'll get whatever you can however you can. So, just saying that they aren't worthless to everyone.
17:32 a smiley face, how cute!
This was an interesting video for me, mainly because I've scrapped 10s of printers for parts. The motors, sensors, springs, and metal rods are my favorite things to collect from them.
I tend to keep random small cable looms, not so much for the plugs but for the wire itself. I mainly need short pieces, and random colours are helpful if I'm hooking up data for microcontrollers or whatever.
I've never found a graphic LCD that was usable from a printer. They've all been either driver chips with no information available or microcontrollers built into the driver board that take serial data from the printer to display stuff, with no general input available. Or a combination of both.
We had a busted up printer some years ago that I took apart and I enjoyed pretty much the same experience you did.
These things are built down to a cost and you can clearly see that when you take apart, they have no incentive to spend a single extra penny then they have to on making one of these things.
I reuse wiring harnesses all the time. Plastic gears and little motors are keepers from printers.
The wifi board is usually a usb one, and you can tell if you see just one differential pair running along to the connector. I have one from a salvaged printer as well, and it turns out you can use these broadcomm ones as monitor so you can hack stuff around. Only downside, they use 3v3 as input, so you need a 5V to 3v3 regulator.
One component that is useful out of these are the optical encoders. Newer prints will only have the rotary types, while the older will also have linear encoders with the code stripes. Those have gotten so hard to source in recent years. if the equipment is old enough, they'll have standalone encoder ICs.
HP loves to tier their torx sizes. User serviceable will be T15, major modules will use T10, components will be T8 or whatever, and stuff that will never be serviced for the life of the product will be whatever fits. Really larger things for psychical installation of the product will often use T25, like rack hardware.
Why would newer printers only have rotary encoders? Linear ones are needed to accurately position the carriage.
I took apart a low end Epson multi function printer a few years ago, and the most fun part was the scanner light. The light want less but something like a mini neon light type system connected to the light bulb was a module which took an input of 12v or so DC, and the output was several thousand volts AC. This was useful to use with the light as is, or, you know, to use the high voltage part for other uses.
The ink cleaning system was similar to this, though. There was a kind of scruffy thing that would run against there print head to clean it, and a little pump to pump the water ink into a very thin rubber tube. The and if the tube was just trapped to like a cotton pad ATA random place in the printer. No box, no sensor, nothing.
you need to polerise the light to read the motor details. 🤷♂️🤣🤣 neat tear down👍
Watch the E-recycle videos on YT to see HP printers in their native habitat.
Printer technology: where the machine is a consumable like the paper it prints on.
Hey that is the same model printer as I have! The only compliant I have with this model after 4 years of use is the software SUCKS! I have had major firmware and driver bugs 4 times and it is an absolute nightmare to fix it! The validation of their updates is terrible and HP has almost bricked their own product several times and it was a mess trying to roll back bad updates. The actual printing and scanning quality this produces is excellent and fast. The ADF is nice and it is easy to clear any jams when they rarely happen. Still wouldn't recommend this due to the software BS but it at least works well for me these days
get surplus business class laser printers and scanners - they just work - no driver BS. I've had the same printers (and scanners) for years - HP LJ4050 for letter / A4 size b&w printing, HPLJ5500 for A3/11x17 color printing, and HP Scanjet 6300 (probably long LONG not supported in windows, but works perfectly fine with SANE in linux), and a commercial size Fujitsu scanner for A3 / 11x17 sized scan jobs. In linux, nothing ever changes, it just works. That is for the 4 or 5 times a year these days that I actually need to scan or print something - who uses paper anymore? Isn't that a thing of the past?
Have the same setup but model 8500, REALLY appreciate this video!
Cheers on the 2:20 "Disassembled in (upside-down) Austria" sticker ;)
For $30 CAD, I bought a kit that includes 60 ml of ink for each color, 120 ml of black, and the accessories required to refill the cartridge. I refill my HP cartridges. It's been a year and it's paid for itself 4 times over.
If it ever gives you trouble next time for laser
@@rockapartie THE FINGERS! i know exactly what you're talking about. When i refill, i keep a piece of printer paper under it. and i have a lovely colorful painitng underneath when i'm done
Speaking of Parts Salvaging. Dave, it would be very interesting to see you do a video on the current component shortage crisis and an E.E.'s methods to work around this. Both during the initial design phase (planned EOL) but also when shit still hits the fan and you cannot get your product manufactured due to shortages.
Considering alternative parts with similar specs., daughterboards/interposers for converting between footprints etc.
Trap for young players 🙂
To this date, the PCB designers fail to communicate with the case designer in my company.
It's probably not worth the effort to salvage one from the dumpster, but before I dump my old all-in-one I'll probably take the motors and electronics out. For a small-time hobbyist like me it's a PITA to order ten ethernet connectors, or a hundred 103 surface mount resistors, when you just need one to repair something. I stack old boards in a box and that's basically my components rack.
Other people would surely find some use for the cogs and metal.
Always enjoy how Dave covers all of the bases: "Yeah... Naah... Maybe... Idunno"
My kid and I took apart a few HP inkjet printers. They were very similar to yours. They were a mess of ink inside. We got some (relatively) decent speakers out of ours. Our screens were also bigger but I haven't interfaced with them yet. I need to find him an old small B&W TV to take apart like I had as a kid. Those were fun.
If I know I'm only salvaging a couple known parts from some plastic POS I usually go at it with a hammer and large pair of pliers to get to the good parts ASAP. That's kind of an outside job though.
Hammer?? Don't you mean Big Clive style X-Ray machine? And maybe the "vise of knowledge" too... :)
When I studied electrical engineering the faculty would collect old broken printers to give to students to use for group projects. Whenever we needed a motor for a model or whatever. There is also an electrical store you could buy parts, ICs etc ... but the junk electronics always helped 😅 and was usually a fun and destructive teardown
First thing I go for is the glass as I use that as a dead flat plane to sand on, or to 3d print something and use it as a window viewing port, etc...
You can salve the linear encoder + codestrip and rotary encoder + codewheel. Both of them are very high resolution and quite expensive if you buy 2nd parts.
An electronics store I used to visit a lot had a habit of picking out the useful parts of the printers customers returned, over time it became thousands of nice gear cogwheels, and I bought that entire bin from them for 10 bucks. Another store gave me 10 printers, I got a load of really strong motors from that, love those motors.
The motors are fun for RC and you can overdrive the shit out of them and if they burn out no worries just use another
Good parts to re-use are though:
* the ribbon-cables. Very good for rejuviniting 3D-printers like the Sidewinder.
* the glassplates: nice flat surfaces for your 3D-printer but also if you need to repair a scanner or for your lightbox on which you view your negatives
Also the belts might come handy for your 3D printer if they are about the right size for yours (if you don't have a big printer).
Paper trays are handy if you got a multiple of those kinds of printers: one with color paper, one for white and such things so you can just switch trays.
Those are the main things I salvaged from mine. Most of the times I don't keep the motors or those optical sensors anymore since I got bunches of them. Might oneday put optical sensors instead of the usual endswitches on my 3d printers though, just because I can.
I remember taking a similar (Epson) machine apart many years ago. I was just a kid (not that I would fare much better now for this task) so, when I put it back together, I got some 20 screws left!
I work in recycling, the entire industry is messed up. There is simply nowhere for any of this to go.
So, a long time ago, businesses moved to a leasing option with the printer companies, so they get to lease the printer, they get maintenance and have to buy genuine consumables. But when this happened, the entire second hand market was flooded by old printers which were owned. On top of that, all the leased equipment also floods the second hand market as well.
I think the worst part is, the most destructive part of this industry is the cost of transfer belts, fusers, drums. So many printers die because of the cost of these items. I have a laser printer that's done 20k pages, which is actually tiny. I have a tonne of toner, maybe about enough toner for 50k pages. But, it needs one of those items, and they cost $250, so I guess the printer has to fly into the bin.
I have another printer that has a transfer belt replacement every 50k pages. But the price is so high it's crazy. And in recycling, so many people toss out printers, that I would never think of paying money to fix anything.
Now, I'm going to put this out there, this ink jet stuff is terrible, don't ever use an ink jet, the value for money is the worst. At least get a colour laser. I mean, you can pick one of these things up at an auction for $10 to $20. Or, you can go to your local ewaste centre and give the guy on a forklift $10 and he'll probably let you grab what you want, providing your prepared to do the leg work on looking through the junk and you aren't taking up his time.
I'm thinking in the future an IT ewaste pick a part is a good idea. So many people need stuff.
I find these printers are not so great for collecting parts these days, but are one of the best examples of cost reduction and mechanical engineering in a consumer product.
They often have a bunch of trays and feed mechanisms, etc. All driven by a single stepper motor
A 32V 1.1A PSU wouldn't be a bad start for a small DIY bench supply.
With how cheap you can get part assortments I find myself not parting things anymore unless it's got a big ol mains transformer
When the rollers on an industrial printer got replaced, I found a rubber mallet head missing it's handle from some construction on the outside of the building. I used them both to 3D a new handle and now I have a custom rubber mallet. :D
Love the Disassembled sticker. The humor of the orientation did not escape me.
Keen to see a video of you showing off your drawers of salvaged jobbies.
The holes not being at the ends of the liner rod are to stop harmonics being generated along the whole rod.
My favorite part is the little rail that goes right in front of the scanner sensor. A lot of them are actually little lens arrays between 2 layers of composite material. They are very small and easy to miss but very interesting once you see the lenses under a microscope. They often appear as just light pipes unless at the correct focal distance. You will be able to see the lens effects too by shining a laser though the lens array.
I usually keep the rubber rollers from various shafts, pretty useful. just used four of them as shock absorbers/bed leveling upgrade on my 3d printer
21:00 pretty sure that’s a small vacuum pump used both for initial priming of the heads, as well as for routine cleaning to clear clogs. The waste ink receptacle (originally called the “spittoon”) is indeed just a bin with absorbent material. The only inkjets I know of that have actual waste ink tanks (i.e. without sponges) are high-volume inkjets like poster printers, continuous-web printers (yes, your bank statements and utility bills, as well as lots of packaging are now inkjet printed in volume), some high-volume office inkjets, and the old Iris continuous-ink inkjets (which used page-wide nozzle arrays driven by ultrasonic actuator to create a non-stop curtain of tiny droplets, then used electrostatic deflection to direct unneeded droplets into the waste ink gutter and into a waste tank, while the wanted droplets continued unimpeded onto the paper; those printers, which were used for fine art prints and publishing proofs, threw out far more ink than ever made it onto the paper, but did 1800dpi back in the days when desktop inkjets topped out at 360dpi…).
@20:43 the sludge. That's probably why it was dumped. Its common for the printer to just throw up a "I'm full" error based on number of pages printed (my older Canon did the same) and there be no way to fix it. Sometimes there is a hidden "code" that you can enter by pressing buttons in a specific order (not usually released to the public) that tells it to restart the count (after a service person has replaced the sponge and cleaned the tank) but not always (and even when there is its usually hard to find and tends to only have escaped into the wild with older printers). The Canon prosumer inkjet printers didn't even have a "bucket" and sponge but instead just a huge sponge that covered most of the inside floor of the printer. I guess they figured, design wise, that the vast majority of people would never put the printer upside down or endwise during transport/storage (after being used for a while) and that the software would be throwing "full" messages long before the sponge was so full it could not contain the ink drips/cleaning cycle/full page printing over spray.
Nah that model doesn't do that. Most likely it has a failed power supply, because it would not turn on when he plugged it in.
I've seen a couple of this particular style (Officejet 8600 and friends) of printer. They throw up a nonspecific error about printhead failure and even going through the secret menu there doesn't seem to be a way to make it continue.
@@eDoc2020 I had one (8620 model) with a printhead failure message. I swapped the printhead with one from another printer and it now works fine. Been working for a few years since... The printheads on these things are fairly fragile and prone to failure. The problem is the printheads are quite expensive.
For someone who fixes printers - PSU's for weird value parts or rare transistors/semiconductors, encoding strips, hoses. Rest is scrap, non usable at all. Sometimes Scan/ADF units fail but really I don't have that much warehouse capacity to keep then labeled from each separate model.
The tubing for that "ink pump" looks way too clean for ink. It's most likely an air pump to blow out the print heads.
It really is up to ones own situation whether its worth it or not, and what you could possibly do with it. Like, back in the day I disassembled a fairly expensive scanner. Never used any of the parts expcept the sensor which I used to build a little spectrometer. Today I would just spend the few bucks for the sensor but back then I did not have any money. Same goes for when your hobby is repairing and reselling stuff (which I did for a while), then a lot of parts can come in handy if you concentrate e.g. on a certain brand or model series. 20 broken ones might make 10 functional ones you can sell.
I had the same printer. And took it apart about 2 years ago and probably got 20 prints out of it and my sponge looked about the same. They deferentially trying to waste your ink to make you buy more.
Your better off getting secondhand office units, OMG the amount of components is amazing. I actually picked up a Toshiba e-studio 2820c unit awaiting my screwdriver!
small ones are never worth, the best bet is to find those big ones (xerox has a lot of them), the older the better. Salvaging those you can get at least 6 stepper motors (sometimes if the printer is very old they may be very beefy), drivers for them that you can salvage from the boards, a lot of metal rods, gears, bearings. The power supply is also beefy, usually has multiple dc as well as ac outputs. There are also a lot of wires that you can salvage, and they are of impressive quality (most likely automotive grade).
The only pain is disassembling it and then collecting the full room of garbage to dispose of it.
Big bin to throw useless stuff into the dump ot
Recently took apart a brother laser/scanner. It actually had some decent stuff in it, a nice brushless motor and even some electromechanical clutches!
The linear CMOS sensor isn't easy to reuse since it uses a high speed LVDS data link to send the data down the cable. The IC's in the assembly are custom and there is no documentation sadly.