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From: andrewsh@lonex.radc.af.mil (Harold G. Andrews II)
Newsgroups: comp.graphics,comp.periphs.printers,comp.sys.ibm.pc.hardware
Subject: Re: Gray Scale Graphics For HP IIP
Keywords: laser printer gray scale
Message-ID: <1991Mar11.144450.18991@lonex.radc.af.mil>
Date: 11 Mar 91 14:44:50 GMT
References: <7784@drutx.ATT.COM>
Distribution: comp
Organization: Rome Laboratory, Griffiss AFB, NY USA
Lines: 32

In article <7784@drutx.ATT.COM> bal@drutx.ATT.COM (LesebergB) writes:
>Has anyone developed anything for the HP IIP so it can do
>true gray scale graphics (whether 16, 64, or 256 scale) without
>dithering ?  I thought the HP Series II had such a product, but
>haven't seen one for the IIP.  I've seen some Postscript cartridges,
>but don't believe they have any gray scale capabilities, but then
>I'm new to this desktop publishing stuff.  Thanks !
>--
>Brad Leseberg  | AT&T Bell Labs | !att!drutx!bal
>(303) 538-4964 | Denver, CO     | bal@drutx.att.com


     I could be wrong (and I expect y'all out there will let me know if I
am) but, as far as I know, laser printers are incapable of gray scale images
for much the same reason that photo-copiers are incapable of reproducing 
gray scale images.  There is no way to control the color of the toner deposited
onto the page.  It is either there or it isn't.  There is no middle ground.
There may be some new techniques out there with which I am unfamiliar.  All
of the HP laser jets, though, are not capable of a partial deposit of toner
onto the page.

     Have a good day...

-Andy

*******************************************************************************
* Harold G. "Andy" Andrews II, 1Lt, USAF  *  "Many the man whose punctuality  *
* andrewsh@lonex.radc.af.mil              *   serves only to warm his chair." *
* Rome Laboratory/IRRE                    *                                   *
* Griffiss AFB, NY 13441-5700             *   - M. Kabrisky                   *
* (315) 330-7788  (AVN Prfx 587)          * (Not an official  USAF viewpoint) *
*******************************************************************************