Xref: utzoo comp.misc:5947 comp.lang.postscript:2073
Path: utzoo!utgpu!watmath!cantuar!greg
From: greg@cantuar.UUCP (G. Ewing)
Newsgroups: comp.misc,comp.lang.postscript,can.talk
Subject: Re: Laser Printable Checks?
Message-ID: <1103@cantuar.UUCP>
Date: 5 May 89 03:12:11 GMT
References: <12810@jade.BBN.COM> <555@lzaz.ATT.COM>
Reply-To: greg@cantuar.UUCP (G. Ewing)
Organization: University of Canterbury, Christchurch, New Zealand
Lines: 25

H.PAGE (hgp@lzaz.ATT.COM) writes:
>What would be interesting is a program to have a Laserwriter print 
>checks itself.  In addition, perhaps one of the firms that refill 
>toner cartridges can refill one with magnetic toner (is this 
>necessary?).  

Well, not sure, but I think the toner used in LaserWriter cartridges
is *already* magnetic! I dismantled a toner cartridge once, and found
it contained a magnetic roller which the toner particles clung to. As
the roller was rotated, the toner sort of crept around it in response
to the changing flux direction.

This led to the bizarre thought that one might be able to magnetically
record on a piece of paper with a black blob LaserWritten onto it!
I don't know if the magnetic properties would survive the heat rollers,
or whether there would even be enough magnetic material present to be
noticeable. Maybe I'll try an experiment one day...

Has anyone else noticed/thought about this, and could shed any light?

Greg Ewing, Computer Science Dept, Canterbury Univ., Christchurch, New Zealand
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