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Posted: |
Jun 16, 2013 - 7:43 AM
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By: |
80cionado
(Member)
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Something I've noticed on some of my CD's is the following:
http://i39.tinypic.com/2qtjwuf.jpg
It was really hard to capture it on a picture, even though I outlined it, it may be difficult to see what it is. At first it looks like a perfect circle, but when you look closer there's deviations. The one I've outlined is just a small one and as you can see, there's a different color inside the not-so-perfect circle.
Here's another example I found here: http://wiki.slimdevices.com/index.php/Repairing_damaged_CDs
http://i40.tinypic.com/jpe7ba.jpg
Any idea what this is? Is it normal and just something I haven't noticed before? Is it a pressing/manufacturing error? Is it harmful to the CD, like CD-rot and CD bronzing is? Or is it in fact rear-side abrasions, which I mentioned in this thread: http://www.filmscoremonthly.com/board/posts.cfm?threadID=96897&forumID=1&archive=0 and is described like this:
"This is a scrape causing a fogged area, neither a radial scratch nor an axial scratch.
It can result in an audible defect because it's wide enough to qualify as an axial scratch, see below. It too can be completely repaired."
If anyone could shed some light on this, that would be great.
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My Rocketeer CD looked like that from the day I bought back in 1993 (I didn't get a CD player until then, sue me). Had a kind of wavy pattern on the back that didn't look normal at all. Played fine, though!
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I have several discs like that as well, and they simply result from using cheap materials (lesser quality foil).
You should be okay if the disc plays fine. The only real concern should be player readability, as your laser may have difficulty with such discs as it ages.
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