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What is discoloration that follows the grain of a CD?
post Jan 26 2012, 06:10
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In advance I apologize for my lack of correct terminology. I noticed on some of the albums I own, both new and well used various spots of discoloration appear on the information side of the disc. It is incredibly subtle and seems to follow along the CD's grain or rings sometimes veering off slightly to make a larger splotch.

Despite this odd aesthetic appearance the albums play and rip fine. I'm curious if the discoloration is a result of the method used to press the CD or perhaps some sort of warping developed over time.

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post Jan 28 2012, 12:18
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I have some original pressed CDs, that have some strange patterns on the data side. It looks like marble. I tried to take some pictures, but there's too much reflection and I don't have any polarization filters for my camera... I also can't seem to find such examples on the internet to show you.

Anyway, I think that this what I'm describing isn't something to worry about, since my oldest CD with such pattern is already 13 years old and it plays and rips with no problems at all.

I don't know if this pattern that I'm describing is the same as what OP tried to describe, though.

Can anyone provide some pictures of what might be the thing that OP describes and what I'm describeing? smile.gif

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