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Re: marker pens

Subject: Re: marker pens
From: Walter Knapp <>
Date: Tue, 22 Oct 2002 18:26:22 -0400
Rudy Trubitt wrote:
> As was already suggested, permanent markers are fine on CDR media. I 
> wrote an article that touched on this point, and spoke with a 
> representative from both TDK and Mitsui, specifically asking about 
> the use of "Sharpie" markers on CDR blank media. They both said that 
> it was entirely OK to do so, and that the protective coating would be 
> fine.
> 
> 
> But the latest rumour I've heard is that marker pens are NOT OK, and that
> the ink will eventually eat through the plastic.  Is this true?  One of our
> major department stores is now selling a "special CD marker pen", supposedly
> archival, but I've not seen it.

It's a rumour. Nice marketing ploy, however, ought to make the 
department store some money.

Hold a CDR up and look at it from the side, notice how thick the base 
layer is. The ink solvent evaporates immediately, and won't touch it. 
The ink itself does not have enough of anything to do so either. Just 
what is going to eat through the base layer?

Before the ink eats through it, you won't have anything to play it. Even 
if that's hundreds of years.

Walt




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