Path: utzoo!attcan!uunet!husc6!ukma!david
From: david@ms.uky.edu (David Herron -- One of the vertebrae)
Newsgroups: comp.sys.amiga
Subject: Re: Color inkjet inks
Message-ID: <11931@s.ms.uky.edu>
Date: 18 Jun 89 14:51:24 GMT
References: <3157@ncsuvx.ncsu.edu> <16708@gryphon.COM> <6485@cs.Buffalo.EDU>
Reply-To: david@ms.uky.edu (David Herron -- One of the vertebrae)
Distribution: na
Organization: U of Kentucky, Mathematical Sciences
Lines: 31

In article <6485@cs.Buffalo.EDU> commike@fomalhaut.UUCP (Alan Commike ) writes:
>My problem has been that we use Apple LaserWriters here, and according to
>the docs that came with the LaserWriter, it can get up to 200 degrees
>*Celcius* inside that thing! 
>
>Does anyone know if the 200C number is correct. Has it changed with the
>LaserWriterII's. I have this really nice Eikonix camera sitting here,
>begging to make some T-shirts (makes great amiga and sun backgrounds too).

The engines I am familiar with, the old Xerox engine that DEC used
in the LN01 and the Canon engine, use heat to fuse the toner particles
to the paper.  This heat is a fundamental principle of how these
printers work and it would take a radically different sort of toner
to work without heat.

What I know is fromm a talk with a DEC repairman who was working on
our LN01 once.  (We don't have the thing anylonger)

As the paper goes through the engine toner is sprinkled on it.  Then the
laser paints across the page -- as the page passes by -- and ionizes
some of the toner.  As the next stage some toner is removed magnetically
leaving the pixels behind, but unfused on the paper.  Next it passes by
a heated element which fuses the toner to the paper, and finally it
passes sommething which removes the heat.

Any inaccuracies are due to the intervening 4-5 years.
-- 
<- David Herron; an MMDF guy                              <david@ms.uky.edu>
<- ska: David le casse\*'      {rutgers,uunet}!ukma!david, david@UKMA.BITNET
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