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.
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.
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).
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??
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)
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.
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.
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).
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.
@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.
@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.
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.
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.......
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...
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!!!!
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
These type of instructional videos are so interesting - BUT - in almost every one we get that confounded din in the background - nearly always including a crashing drum or cymbal - WHY? IT RUINS IT !!!
lol at the random comments especially on how DVDs are made and even more lolz at the people who actually disliked this video. The people that disliked this video must be in the bootleg DVDs business XD. We no have high tech machine. Instead we have frisbee with bear to put on sticker with movie name on it and sell it to people with very bad quality. Great Success!!! HAHA
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.
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.
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).
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??
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)
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.
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.
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).
I love the song used in this video.
wow! que interesante y complejo trabajo que hay detras de un simple disco!
This is pressed pre-encoded CD/DVD with data already on it. How writeable discs are made?
@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"
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.
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?
@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.
LOL! i know.. right? i was like omg is that ross from friends? lol..
2018 anyone?
I wonder what it would be like to tour a place like that. I bet the equipment is most impressive.
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
WOW THIS IS SO COOL I HAVE ALWAYS WANTED TO KNOW HOW CDS WERE MADE AWESOME!
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
wow , takes forever till one cd is made! O,O !
I love watching the chow How Its Made! Its so interesting!
How many cd/dvd's can you make with the master?
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
''uuhhmm, yes, i got it....
- can you go back at the master disc thing please?''
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.
@maisylatif Philips made it right?
holly shit that thing is almost as big as a laser disc
@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.
This is tricky. How old is this clip?
Will materials ever run of for cds
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.
The commentator sounds like that guy in Friends that play Ross!
Cool im Very impressed of this thing!
I know the discs are protected and won't get scratched, but it looks like there gonna get scratched alot
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.......
Dunno why but,when I rate the video with 5 stars I saw in my recent ratings ONE!!!
Yup hence why they just burned it. Sure it is not as fast a proces but preparing for it took much less time.
The master they used at the start is glass.
Awesome
lol sounds like david schwimmer (Ross off friend) plus it's something that he'll do since he's the technical one
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.
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...
wow! a brilliant idea ir is!
this guy sounds like Kenneth from 30 Rock, on downers
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.
is the robot dancing at 4:15 ?
@fithare not necessary, you just need the right spirit to understand stuff, thats all
I like this.
Very interesting.
@masterquadbiker I would like to buy the Master version of it wouldn't you
That is why they need a blank DVD and CD recycling factory optional reusable new blank DVDs and CDs.
They make a mold and then press it onto the plastic disc.
@Xcaliber36 lol that guy from FRIENDS? haha yeah.Sounds scarily so much like his voice O_O
Ah how time goes :)
DVD's are slightly different...but for the most part the same as this.
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.
i still don't understand how they get a movie on a piece of glass
@aGoesIn because he might not be American. Hear the way he said 'metalizing process'?
lol da guy sounds like david schwimmer (Ross of Friends)
Quite interesting.
B.Net was here!
WOW COOL
Wos that made in 1900 or 1786?
CDs feel so 90s
80s even
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 >:(
british accent narrator is better for a documentary video
they never say when the information is put on the master copy
how in the world do you put music in a cd
the narrator sounds a lot like david shwimmer
yeahh he sounds just like Ross from friends...lol
i still have no idea how a disc is made.
magic *snort *snort
WHat Is The Solution That Developes Data On he Glass?
good cd
So much work for a CD
2:31 - 2:34
XD awwww yea
Ok. I understand.
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!!!!
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
@RETROGAMER43 Phillips Sony and Toshiba all pitched in to make em
These type of instructional videos are so interesting - BUT - in almost every one we get that confounded din in the background - nearly always including a crashing drum or cymbal - WHY? IT RUINS IT !!!
Noble 6 was here....
ahahaahha omfg looks just like it
2:35 it looks like the machine is peeing
so much work with one disc?!
omg i understood this video wow
lol at the random comments especially on how DVDs are made and even more lolz at the people who actually disliked this video. The people that disliked this video must be in the bootleg DVDs business XD. We no have high tech machine. Instead we have frisbee with bear to put on sticker with movie name on it and sell it to people with very bad quality. Great Success!!! HAHA
David Schwimmer?
wow hard to imagen they done this like 30million times for cod6
why is ross narrating this? did "friends" not pay him enough?
@kkkiwi
He's Canadian.
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?
2:31 JIZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ