Reply to Re: Why do commercial DVD's look so much cleaner?

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Posted by J. Clarke on 03/23/06 20:04

doc wrote:

> that's inorganic, and i believe both are inorganic if my memory serves me
> right, moreover, the analogy is correct burn vs pressed.
>
> someone correct me if im wrong here but an an organic media would be very
> dangerous and very unstable with heat.

"Organic" refers to just about any substance that is carbon based and has
carbon-hydrogen bonds--this includes the polycarbonate plastic from which
the DVDs are made and into which the data is pressed on commercial DVDs,
and the cyanine, azo, dipyrromethene, or other dye used to record the data
on write-once DVDs.

On the other hand, the data storage layer in rewriteable disks is _not_
organic, it's a phase-change metal alloy, typically of Germanium, Antimony,
and Tellurium.



> "Odds-N-Ends" <oddsnends@hotmail.com> wrote in message
> news:DcCdnVlOZ5XD_YXZnZ2dnUVZ_t2dnZ2d@centurytel.net...
>> Additionally,
>> Your DVDs are "burned" onto a layer of organic material. Theirs are
>> "pressed" onto non-organic film. Makes a big difference.
>>
>> Fotograffer

--
--John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

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