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|CED Digest Vol. 4 No. 42 • 10/23/1999|
Date: Sun, 17 Oct 1999 16:11:37 -0800 From: firstname.lastname@example.org (Tom Howe) To: email@example.com Subject: RE: Skipping & Disc Cleaning My opinion on cleaning CED's is to not do it by any other means than repeatedly playing over the skipping grooves, unless the disc upon visual examination reveals obvious contamination, like having been immersed in muddy water. If a CED skips in a specific area and the condition doesn't improve by repeatedly playing that area, the skipping is due to damaged grooves and won't improve with other forms of cleaning or lubrication. A disc that skips throughout play could be a worn-out disc, a bad pressing, a disc damaged due to improper storage, or it could just be a new disc that needs a couple of "conditioning plays." Discs that have never been played or haven't been played for many years have a glassy smooth lubricant surface, and playing the disc once or twice will in effect cut a groove in the lubricant and greatly reduce skipping. RCA did a lot of research into disc lubrication and came up with a conditioning process where the discs were treated with an amine solution then rinsed in distilled water prior to drying and spray lubrication. In their own words "chemically treated discs average a few tenths of a second carrier distress after moisture stress compared with 20 to 30 seconds for untreated discs." Washing CED's will undo the benefits of the conditioning process, either immediately by allowing mineralized water to evaporate in the grooves, or in the long term by making the grooves more susceptible to video virus. More information on disc lubrication can be found in RCA's 25 or so patents on the subject, which can be found by using your browser to search for the term "lubricant" on this page:
http://www.cedmagic.com/museum/ced-patents/ced-patents-table.html ------------------------------------------------------------------------ Date: 20 Oct 99 23:46:30 WET DDST From: Charles Raimondi To: firstname.lastname@example.org Subject: SUBSCRIBE Please subscribe me to CED digest. The first thing I am interested in is whether you know of any sources for Toshiba CED stereo CED player styluses. Thanks!
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