For a Double-Layered DVD, two separate Glass Masters as well as two separate pressing negatives are produced, additionally this is an even more delicate process (extensive cleanliness) because of the much higher track densities on these discs since much smaller particles could disturb the recording quality on a DVD. The process of duplication consists of three sequential pressing steps, where a thin layer of polycarbonate is applied after the first layer, thereafter the second layer is applied.
What we don't see in the clip is the Recording process where the data are written to the photoresistant coating which has been applied to the glass disc before. This is done in a special recorder, which functions very alike to a home CD-Recorder. After recording, the data pits are "stitched" into the coating and are then developed using de-ionized water and flouride acid (which is able to etch glass). After this developing process, the data are permanently engraved to the glass master disc.
@mmichaelc In response to your working in the late 80's at a disc manufacturing plant. Nowadays, the CD cycle time is down to about 1 every 4-4.5 seconds. DVD's have a shorter cycle time. We no longer use the printing tables for our monoline machines. There were too many problems with trying to print on a disc still hot from the molding/sputtering/coating process, plus the design of the print tables made precise alignment very difficult.
Btw: The Data are NOT direcly "etched" to the production Die!. The Data structure simply represents the mirror of the already etched metalized glass master after the selectorforming process, producing the metallic Die in an electrogalvanic bath (the green fluid where the metalized master is put into) to get a buildup of nickel and vanadium (This is the resulting Die for later mass-replication using polycarbonate).
engineering,it´s all about engineering,as an engineering student i can be proud of the things they do. It´s just incredible 100.000 disks per day,very nice video.
CDs of different capacities (CD-R): This depends on the used standard as well of the track density for e.g. 74/80/90/100 minutes. Insofar, CD-R is a different type of production also, using a pregrooved polycarbonate disc as carrier. Standard capacities for the pressed Readonly CD are 74 and 80 mins. But also smaller amounts of data are possible, e.g. Creditcard-CD (these get shaped after being pressed and printed) or 3.5 inch round CD (smaller pressing mould, ca. 185 MB Capacity)
I had a friend once who worked in duplication and indeed smaller batches we're burned. But bigger batches send off to the cd/dvd duplication part of the building. The point where they accepted jobs was about 1000 cd's. If you had less you would just have to get through the burn process.
I still will really never understand how you can take a song and put it in a cd like it’s some kind of object?? Like do you download the music on the cd or sum?? Does it have a special pattern to it?? How does it work on a CD player with that needle thing??
In the Clip there is repeatedly told of "De-ionized Water". This is necessary to prevent any buildups of dust, hair particles and crystals of e.g. calcium carbonate and other natural salts and ingredients onto the master material after drying. So this special water is chemically "clean" to be used in the manufacturing process. (technically at the same quality like Battery Water /Distilled Water).
Back when I worked making Cd's and Laserdisc's we didn't have cd/ dvd burners this was back in the late 1980's. The press recycle time's were 14 sec's per disc (1987) in 1989 the press were updated too make disc's at 7 seconds. Also this was back before the "monoline machine" was out so we had a room with seperate machines to make the disc's and a 4 color printer.
Here you see an ancient documentary about how DVD & CD disks are made. Even to this day companies try their hardest to keep producing DVDs & CDs with the perfected procedure of providing us with many disks which seemingly have a probability of less than 50% of actually storing our data. What a fascinating nature of technology.
@SolveSoul It is a lot of work for a CD, but the manufacturing process has become so streamlined and quality standards so high that the overall cost for an individual CD is insignificant. If you think about it, just one of those "stampers" (the metallic discs from which CD's/DVD's are made) can produce tens of thousands of discs each.
@meatisdeliciouse DVD's are designed to have two layers (substrates) of plastic (also known as polycarbonate) with metallic layers in between. It's possible that some disc manufacturing companies make CD's on the same machines as they make DVD's, but I'm not sure if any actually do that.
A retail cd\dvd writer burns dots or dashs (0 or 1) onto a special dye. If these discs are left in bright sun light they can fade and the data can be lost. The factory pressed discs shown in this video which are press molded from a glass master have bumps on (sorta like brail) and therefore last longer. It is true that the video does not show the process of the data being etched onto the glass but as it is a microscopic process that is probably expecting too much.
Im am installing a game richt now and I wanted to know why my computer made a bleep noice everytime something goes from the disk, on my harddrive. And why the CD turns...
Anthony Williams The writing device (called "Exposer") is not shown but looks like a bigger laserdisc recorder wherein the coated glass plate is placed. The laser beam exposes the photosensitive coating with the pits (by punching holes into the coating which is the actual exposure process in thermophysical view, the coating is being vapourized at these locations and gets sucked away from the recording cabinet to keep it clean!). The result is the exposed coating on the glass disc with holes in it where the pits are to be lateron. The disc is then placed into the developer where etching is done by a hydrofluoride acid solution to etch the pits down (through the exposed holes in the photocoating) into the glass surface itself. The residue of coating is then flushed away, leaving the data etched into the clean glass master. The master is then vacuum coated with nickel and vanadium, lateron thicklayered by the same material in a bath, obtaining the completed stamper which is pulled off the glass master then.
So I take it that the music or movie is on the reading side of the disc itself & not on the label's underside So the disc is made first with the music or movie on it & then the label which only serves the purpose of advertising only is applied. I always thought & was told that the music or movie is on the underside of the label itself. I wish there is a video on here telling me or us where the music or movies made on CD's & or DVD's are located on the disc itself.
if I were you I would rathar google "how data stored in CD" anyway here is the answer: A CD writer burns little holes in an aluminum disk This causes little bumps to appear on the disc. A CD drive can read the data back out using a laser that reflects on that surface. in a bump the laser will reflect in a different angle then when there isn't a bump. the CD drive detects this and reads a '1' if the laser is not reflected (no bump) and a '0' if the laser is reflected (hits a bump).
PinkPanther this refers to a home- recordable disc. In this video they show how ROM discs are made (buyable music or prerecorded data cds/dvds). These are being press-moulded. Means mass-produced. Stamped using liquid polycarbonate forming discs from the stamper having everything ready-on obtained from the glassmaster.
So they start off showing how the original disk is made... and then they show the robots making copies of it? I suppose its no that much work if you think about it, because its not for one CD its for like thousands.
it blows my mind how a laser just edges pits inside the master disc,how a negative is then made to use as a stemper,but i,ve readed that there,re many way's to create d,s using,copper,gold,silver,nickel or just aluminum wich is the cheapest meterial to use but also don't reflect light as good as metal does,resulting in lower sound quality,but even the best made stemped cd never matches the sound quality of the master disc,hence the term master disc,oh dammed!!!!
lol i thought that the first one was the cd and i was going to comment that is a hard drive disc not a cd but then i thought DAMN so that is why they are so expensive!but alls well that ends well.......
I dont understand how a piece of glass plays music, movies, and the other shit u can do with cds, i dont even understand how music is played on a cassete tape, technology is confusing
Its funny when people try to come on here and give a pre-written explanation about how something like this is made. No man nor women on here really knows the truth about how these things come into existence, and shouldn't try to portray like you do because its only given an false interpretation. Still you guys and gals have not explain how they got those images on a disk or cassette in the first place? Explain to everyone geniuses how they make a camcorder or camera that stores these images?
For a Double-Layered DVD, two separate Glass Masters as well as two separate pressing negatives are produced, additionally this is an even more delicate process (extensive cleanliness) because of the much higher track densities on these discs since much smaller particles could disturb the recording quality on a DVD.
The process of duplication consists of three sequential pressing steps, where a thin layer of polycarbonate is applied after the first layer, thereafter the second layer is applied.
What we don't see in the clip is the Recording process where the data are written to the photoresistant coating which has been applied to the glass disc before. This is done in a special recorder, which functions very alike to a home CD-Recorder. After recording, the data pits are "stitched" into the coating and are then developed using de-ionized water and flouride acid (which is able to etch glass).
After this developing process, the data are permanently engraved to the glass master disc.
@mmichaelc In response to your working in the late 80's at a disc manufacturing plant. Nowadays, the CD cycle time is down to about 1 every 4-4.5 seconds. DVD's have a shorter cycle time. We no longer use the printing tables for our monoline machines. There were too many problems with trying to print on a disc still hot from the molding/sputtering/coating process, plus the design of the print tables made precise alignment very difficult.
Btw: The Data are NOT direcly "etched" to the production Die!. The Data structure simply represents the mirror of the already etched metalized glass master after the selectorforming process, producing the metallic Die in an electrogalvanic bath (the green fluid where the metalized master is put into) to get a buildup of nickel and vanadium (This is the resulting Die for later mass-replication using polycarbonate).
engineering,it´s all about engineering,as an engineering student i can be proud of the things they do.
It´s just incredible 100.000 disks per day,very nice video.
CDs of different capacities (CD-R): This depends on the used standard as well of the track density for e.g. 74/80/90/100 minutes. Insofar, CD-R is a different type of production also, using a pregrooved polycarbonate disc as carrier. Standard capacities for the pressed Readonly CD are 74 and 80 mins. But also smaller amounts of data are possible, e.g. Creditcard-CD (these get shaped after being pressed and printed) or 3.5 inch round CD (smaller pressing mould, ca. 185 MB Capacity)
@alacar91 The master disk is usually kept in storage by the "Bating" machine. It is then used by the machine in a process called "Masterbating"
I had a friend once who worked in duplication and indeed smaller batches we're burned. But bigger batches send off to the cd/dvd duplication part of the building. The point where they accepted jobs was about 1000 cd's.
If you had less you would just have to get through the burn process.
I still will really never understand how you can take a song and put it in a cd like it’s some kind of object?? Like do you download the music on the cd or sum?? Does it have a special pattern to it?? How does it work on a CD player with that needle thing??
In the Clip there is repeatedly told of "De-ionized Water". This is necessary to prevent any buildups of dust, hair particles and crystals of e.g. calcium carbonate and other natural salts and ingredients onto the master material after drying. So this special water is chemically "clean" to be used in the manufacturing process. (technically at the same quality like Battery Water /Distilled Water).
Back when I worked making Cd's and Laserdisc's we didn't have cd/ dvd burners this was back in the late 1980's. The press recycle time's were 14 sec's per disc (1987) in 1989 the press were updated too make disc's at 7 seconds.
Also this was back before the "monoline machine" was out so we had a room with seperate machines to make the disc's and a 4 color printer.
This is pressed pre-encoded CD/DVD with data already on it. How writeable discs are made?
The recording is under the label & protective thin layer of plastic. I wasn't too sure of this until i saw a few different videos on cd production
Here you see an ancient documentary about how DVD & CD disks are made. Even to this day companies try their hardest to keep producing DVDs & CDs with the perfected procedure of providing us with many disks which seemingly have a probability of less than 50% of actually storing our data. What a fascinating nature of technology.
@SolveSoul It is a lot of work for a CD, but the manufacturing process has become so streamlined and quality standards so high that the overall cost for an individual CD is insignificant. If you think about it, just one of those "stampers" (the metallic discs from which CD's/DVD's are made) can produce tens of thousands of discs each.
Add: 0:15-0:23 looks very alike to the recording unit, but it is the surface inspection device.
@meatisdeliciouse DVD's are designed to have two layers (substrates) of plastic (also known as polycarbonate) with metallic layers in between. It's possible that some disc manufacturing companies make CD's on the same machines as they make DVD's, but I'm not sure if any actually do that.
A retail cd\dvd writer burns dots or dashs (0 or 1) onto a special dye. If these discs are left in bright sun light they can fade and the data can be lost. The factory pressed discs shown in this video which are press molded from a glass master have bumps on (sorta like brail) and therefore last longer.
It is true that the video does not show the process of the data being etched onto the glass but as it is a microscopic process that is probably expecting too much.
What company makes the DVD's and where are they located?
I love the song used in this video.
Im am installing a game richt now and I wanted to know why my computer made a bleep noice everytime something goes from the disk, on my harddrive. And why the CD turns...
@wiggajones think of it as a Vinyl with a pressed pattern in it. then it's read by using a laser instead of a needle.
amazing! im still not sure how the data is put on the disk but cool :)
Anthony Williams The writing device (called "Exposer") is not shown but looks like a bigger laserdisc recorder wherein the coated glass plate is placed. The laser beam exposes the photosensitive coating with the pits (by punching holes into the coating which is the actual exposure process in thermophysical view, the coating is being vapourized at these locations and gets sucked away from the recording cabinet to keep it clean!). The result is the exposed coating on the glass disc with holes in it where the pits are to be lateron. The disc is then placed into the developer where etching is done by a hydrofluoride acid solution to etch the pits down (through the exposed holes in the photocoating) into the glass surface itself. The residue of coating is then flushed away, leaving the data etched into the clean glass master. The master is then vacuum coated with nickel and vanadium, lateron thicklayered by the same material in a bath, obtaining the completed stamper which is pulled off the glass master then.
Finally someone explained it
Data is 01 only
I wonder what it would be like to tour a place like that. I bet the equipment is most impressive.
kinda cool to realize that these "Ultra Modern & High-Tech" CDs are made the same basic way that Vinyl Records have been made for over 100 years.
If it's not broke, don't fix it
The pressing plant that I used to work in we pressed orders that were 500 disc's it took longer to setup the job then it did to print it.
wow! que interesante y complejo trabajo que hay detras de un simple disco!
So I take it that the music or movie is on the reading side of the disc itself & not on the label's underside So the disc is made first with the music or movie on it & then the label which only serves the purpose of advertising only is applied. I always thought & was told that the music or movie is on the underside of the label itself. I wish there is a video on here telling me or us where the music or movies made on CD's & or DVD's are located on the disc itself.
is the robot dancing at 4:15 ?
This is tricky. How old is this clip?
How many cd/dvd's can you make with the master?
@maisylatif Philips made it right?
I know the discs are protected and won't get scratched, but it looks like there gonna get scratched alot
Will materials ever run of for cds
@Xcaliber36 lol that guy from FRIENDS? haha yeah.Sounds scarily so much like his voice O_O
@RETROGAMER43 Phillips Sony and Toshiba all pitched in to make em
2018 anyone?
no, most of the part of the video shows how they make a "master" disc. from that "master"disc, they "press" some hundered thosands of CDs a day.
WOW THIS IS SO COOL I HAVE ALWAYS WANTED TO KNOW HOW CDS WERE MADE AWESOME!
That is why they need a blank DVD and CD recycling factory optional reusable new blank DVDs and CDs.
@masterquadbiker I would like to buy the Master version of it wouldn't you
@aGoesIn because he might not be American. Hear the way he said 'metalizing process'?
Yup hence why they just burned it. Sure it is not as fast a proces but preparing for it took much less time.
@kkkiwi
He's Canadian.
LOL! i know.. right? i was like omg is that ross from friends? lol..
Wos that made in 1900 or 1786?
Awesome
I love watching the chow How Its Made! Its so interesting!
they never say when the information is put on the master copy
The commentator sounds like that guy in Friends that play Ross!
if I were you I would rathar google "how data stored in CD" anyway here is the answer:
A CD writer burns little holes in an aluminum disk
This causes little bumps to appear on the disc.
A CD drive can read the data back out using a laser that reflects on that surface.
in a bump the laser will reflect in a different angle then when there isn't a bump.
the CD drive detects this and reads a '1' if the laser is not reflected (no bump) and a '0' if the laser is reflected (hits a bump).
PinkPanther this refers to a home- recordable disc. In this video they show how ROM discs are made (buyable music or prerecorded data cds/dvds). These are being press-moulded. Means mass-produced. Stamped using liquid polycarbonate forming discs from the stamper having everything ready-on obtained from the glassmaster.
WHat Is The Solution That Developes Data On he Glass?
wow , takes forever till one cd is made! O,O !
@fithare not necessary, you just need the right spirit to understand stuff, thats all
Cool im Very impressed of this thing!
Very interesting.
''uuhhmm, yes, i got it....
- can you go back at the master disc thing please?''
wow! a brilliant idea ir is!
So they start off showing how the original disk is made... and then they show the robots making copies of it? I suppose its no that much work if you think about it, because its not for one CD its for like thousands.
lol sounds like david schwimmer (Ross off friend) plus it's something that he'll do since he's the technical one
WOW COOL
They make a mold and then press it onto the plastic disc.
it blows my mind how a laser just edges pits inside the master disc,how a negative is then made to use as a stemper,but i,ve readed that there,re many way's to create d,s using,copper,gold,silver,nickel or just aluminum wich is the cheapest meterial to use but also don't reflect light as good as metal does,resulting in lower sound quality,but even the best made stemped cd never matches the sound quality of the master disc,hence the term master disc,oh dammed!!!!
how in the world do you put music in a cd
i still don't understand how they get a movie on a piece of glass
lol i thought that the first one was the cd and i was going to comment that is a hard drive disc not a cd but then i thought DAMN so that is why they are so expensive!but alls well that ends well.......
David Schwimmer?
holly shit that thing is almost as big as a laser disc
I dont understand how a piece of glass plays music, movies, and the other shit u can do with cds, i dont even understand how music is played on a cassete tape, technology is confusing
THEREV468 Ikr
The master they used at the start is glass.
this guy sounds like Kenneth from 30 Rock, on downers
Dunno why but,when I rate the video with 5 stars I saw in my recent ratings ONE!!!
DVD's are slightly different...but for the most part the same as this.
so much work with one disc?!
I like this.
lol da guy sounds like david schwimmer (Ross of Friends)
B.Net was here!
I loved How It's Made, but those bastards aren't playing it on Discovery anymore. It's on Science, and my parents won't buy that package >:(
the narrator sounds a lot like david shwimmer
good cd
i still have no idea how a disc is made.
why is ross narrating this? did "friends" not pay him enough?
Quite interesting.
Ah how time goes :)
Its funny when people try to come on here and give a pre-written explanation about how something like this is made. No man nor women on here really knows the truth about how these things come into existence, and shouldn't try to portray like you do because its only given an false interpretation. Still you guys and gals have not explain how they got those images on a disk or cassette in the first place? Explain to everyone geniuses how they make a camcorder or camera that stores these images?
CDs feel so 90s
80s even
So much work for a CD
wow hard to imagen they done this like 30million times for cod6
british accent narrator is better for a documentary video
2:31 - 2:34
XD awwww yea
yeahh he sounds just like Ross from friends...lol
Noble 6 was here....
' ''small, hard'' translucent disc'
rofl, that's a 80's technique ... it's just a raw film to show u how's it's made !! there's machines that make 25k disks each 3 minutes !
2:31 How a guy pees!
So all that work for 1 disc? Lol
2:31 JIZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
BUKKAKE! 2:31
Ok. I understand.
Goat hair brush?