Talk:Compact disc manufacturing

Label printing not accurate

Seems like the word "label" should not be used in reference to the printing on the disc, as this is confusing. Consumers are used to "labeling" their disc with a peel off self adhesive label. In this context, I think most people would think of a label in this manner. Should this be rewritten, avoiding the word "label"? Mateck (talk) 21:59, 14 December 2009 (UTC)

Merge proposal

My view? Keep the section in Compact Disc as a very brief overview of the process (for those who don't want detailed info), but keep the more detailed information in CD manufacturing. Obviously, info that is in Compact Disc (re: manufacturing) that isn't in this article *should* be here. Fourohfour 11:51, 9 April 2006 (UTC)

Um, why has this been proposed? As long as there's a link back to this article from the relevant section, why should a short summary be merged here? Lots of other articles do the same with no problems, don't they? --KJ 11:14, 8 May 2006 (UTC)

For the record, I'm talking about Compact disc#Manufacturing_Process. --KJ 11:16, 8 May 2006 (UTC)

Let us not bloat Compact disc article any more then necessary. All new information from that section should be moved here, and that section should be replaced with a brief summary of this article. Matveims 22:10, 5 June 2006 (UTC)

I agree about the new information bit, but I don't think briefer is better. I mean, you could have gone ahead without proposing a merge. --KJ 02:44, 7 June 2006 (UTC)

What the heck does "Plating is rather eschewed through passivation and, initially, because the glass is not electroconductive." mean? I can't figure out how to fix it. ExpatSalopian (talk) 17:56, 19 August 2015 (UTC)

Misc

Cleaned it a little, removed inaccuracies. There is still some out of date information there so will come back another day. --60.241.29.29 10:17, 14 July 2006 (UTC) The link for www.audiodev.com in the references is not working.

Fixed some of the bad grammar. GlassSandwich 20:30, 28 January 2007 (UTC)

Glass Substrate

Added copyedit flag, though it's prolly needed elsewhere in the article as well. Did some copyediting, though this section still basically needs a total rewrite, as well as sources. The articles uses abbreviations in the first paragraph that aren't explained (or even linked) until the last paragraph (LBR) and also the photo/non-photo resist thing isn't talked about until the last paragraph. It's also unclear whether the whole contaminants bit is referring to the manufacture of the master ITSELF, or the process of using the master to produce the final CDs. Yuletide 16:29, 21 March 2007 (UTC)

I did some more copyediting, and removed the copyedit tag... I think it looks readable now, though sources are still needed. Bushytails 17:15, 3 April 2007 (UTC)

Hello

  most of the article needs rewriting as missing important sections of the process, such as developing to a pit shape, adhesion layer on glass, passivation of fathers. Lots of complete inaccuricies ( I tried for a year to get nickel evaporation to work but it couldn't, sputtering works fine)   My source is what I think you call primary as I worked as the process engineer on mastering and stampers at Philips (PDO/polygram) England for 12 years.

The article would not be longer as there are long sections that need removing such as trying to explain electrplating, while a simple link would be much better. Would it be OK to rewite or is my lack of refences a problem.

I ma trying to get an account. phildust — Preceding unsigned comment added by 95.148.77.158 (talk) 19:03, 6 January 2012 (UTC)

Sources

Also added an unreferenced tag since there are no sources cited Here are some sources for future consideration:

• Understanding CD-R/CD-RW: Disc Construction and Manufacturing: http://www.osta.org/technology/cdqa15.htm
• Understanding CD-R/CD-RW: Sources for further reading: http://www.osta.org/technology/cdqa16.htm
• Understanding CD-R/CD-RW: Industry and Product Contacts: http://www.osta.org/technology/cdqa17.htm

Yuletide 16:40, 21 March 2007 (UTC) http://www.solarcd.com User:Senthil

THIS SOURCE IS GREAT

this is very good and i used it for my science homework but there could be some more things about how they are suited to being this material. —Preceding unsigned comment added by 81.157.141.158 (talk) 14:26, 19 October 2008 (UTC)

Electroforming

Hi, I am from Germany and I translate the text for myself to understand the content. In the second sentence from the episode electroforming is written "... end-procut ...". If its right, what does it mean? Or should it mean "end-product" ??? --141.55.218.177 (talk) 12:13, 30 November 2008 (UTC)

Nice set of sources

Here are some sources that I get:

• How to do duplication on CD-R/CD-RW: http://www.wikihow.com/Burn-the-Master-DVD-for-DVD-Replication-or-Duplication
• Sources for further reading: http://www.buzzle.com/articles/cd-dvd-duplication/

Jvwhite456 11:00, 22 March 2011 (UTC) http://www.americanrecordablemedia.com/

article contains major inaccuracies and ommisions

Hello

I came across this article and on reading it I couldn't believe the large number of major mistakes and areas that are missed. The reason I know this is that for 12 years I worked as the CD masters and stampers process engineer at Philips in England ( known as PDO and Polygram). I have started to rewrite sections starting with electroplating, but I do not know the rules for Wikipedia. I cannot give references to books and other references as the operating manuals were commercial documents. Please comment.

Phildust — Preceding unsigned comment added by Phildust (talk • contribs) 15:55, 7 January 2012 (UTC)

Phildust - I just saw your note. Any published material will be considered (evaluated) for use as a source - see http://enwp.org/WP:RS for more info. Commercial manuals are considered primary sources(first person) about the machinery they cover. They might be reliable secondary sources about practices and processes for their field and time period. Their authorship matters; some manuals were written by notable professionals, or who later became notable in their own right. I didn't see your edits - which ones were yours? Anyways, propose your suggested source details (title, author, publisher, year). --Lexein (talk) 19:37, 7 December 2013 (UTC)

Jitter meter

I removed the following uncited statement from Jitter, "A jitter meter is a testing instrument for measuring clock jitter values, and is used in manufacturing DVD and CD-ROM discs." If it can be substantiated, this article is probably the better place to include this statement. ~Kvng (talk) 15:54, 19 May 2019 (UTC)

Glass master vs. stamper

195.50.150.29 has changed the caption for [1] to indicate it is a stamper. The original description on commons indicates this is a "metalized glass master", is that the same as a stamper or is one of these descriptions in error? ~Kvng (talk) 14:01, 30 March 2020 (UTC)

Notes on my recent "reading up" on all this

• Essentially the conventional pathway is: Data->Photolithography Etches it into Glass->Sputtered Metal Disc is Made and Removed->Electroformed into Final Mold->Used in Injection Molding of the Discs
• This 1997 Paper Titled "Precision manufacture of optical disc master stampers" mentions using the etched glass (or rather ceramic) directly]]] which is probably worth a mention on-wiki
• As per that Glass Master vs Stamper i hope this clears that up a bit
• Either way a PILE of work can be done on all this optical disc stuff, there can be some inter-linking, some more detailed information on some of the mechanisms for error correction/jitter and all that which i have seen a little of.
• Packaging as well can probably be expanded a bit more
• I am rushing right now and can't describe everything, but TLDR more polish on existing information + filling in gaps can, and should, be done

--Eric Lotze (talk) 21:42, 29 April 2024 (UTC)

Downsteam characteristics

The article says: Another advantage of this method is that pit depth variation can be programmed during recording to compensate for downstream characteristics of the local production process (e.g., marginal molding performance). This cannot be done with photoresist mastering because the pit depth is set by the PR coating thickness, whereas dye-polymer pits are cut into a coating thicker than the intended pits. NPR mastering does have the advantage of immediate feedback, but downstream characteristics don't require immediate feedback. Photoresist thickness can be adjusted at spin time, and still allow for downstream characteristics. Gah4 (talk) 10:14, 7 August 2024 (UTC)