Xref: utzoo comp.misc:5983 comp.lang.postscript:2088
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!ucsd!rutgers!sunybcs!kitty!larry
From: larry@kitty.UUCP (Larry Lippman)
Newsgroups: comp.misc,comp.lang.postscript
Subject: Re: Laser Printable Checks?
Summary: Toner versus developer...
Message-ID: <3148@kitty.UUCP>
Date: 6 May 89 14:22:41 GMT
References: <12810@jade.BBN.COM> <555@lzaz.ATT.COM> <1103@cantuar.UUCP>
Organization: Recognition Research Corp., Clarence, NY
Lines: 25

In article <1103@cantuar.UUCP>, greg@cantuar.UUCP (G. Ewing) 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.

	I don't known anything about LaserWriters or laser printers
which use cartridges, but in more rugged laser printers (such as the
Xerox 4045) there is a magnetic material used that is called "developer".
The developer is "recirculated" within the laser printer and does not
mix with the toner after it has been despoited on the drum.  In a
normally functioning laser printer no portion of the developer is
actually fused upon the resultant copy paper.

	You most likely saw developer and thought it was toner.

<>  Larry Lippman @ Recognition Research Corp. - Uniquex Corp. - Viatran Corp.
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