Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!ames!mailrus!iuvax!pur-ee!a.cs.uiuc.edu!uxc.cso.uiuc.edu!uxe.cso.uiuc.edu!leonardr
From: leonardr@uxe.cso.uiuc.edu
Newsgroups: comp.sys.mac
Subject: Re: HP DeskJet Drivers?
Message-ID: <46100181@uxe.cso.uiuc.edu>
Date: 10 Jul 88 17:06:00 GMT
References: <729@esl.UUCP>
Lines: 40
Nf-ID: #R:esl.UUCP:729:uxe.cso.uiuc.edu:46100181:000:2366
Nf-From: uxe.cso.uiuc.edu!leonardr    Jul 10 12:06:00 1988


fjo@ttrdf.UUCP(Frank Owen) in comp.sys.mac

>in article <46100177@uxe.cso.uiuc.edu>, leonardr@uxe.cso.uiuc.edu says:
>> 	I had the pleasure to see at the recent MacHack '88 a DeskJet working with
>> Orange Micro's GrapplerLQ.  The grappler is a hardware interface that works
>> along with some INITs and the standard Apple ImageWriter LQ driver to driver
>> the DeskJet.  
>
>   It sounds to me that since it uses the Apple Imagewriter LQ driver,
>that the Grappler simply converts Imagewriter LQ code to compatible
>DeskJet codes.  Basically, it makes the DeskJet "look" like an Imagewriter LQ.
>This is an O.K. solution, but not the best one. The Imagewriter LQ has
>resolution of 216x216 dpi, while the DeskJet does 300 dpi. Asside from
>the possible scaling problems, it would be nice if you could get
>true 300 dpi output on the DeskJet.  The Grappler is also a piece of
>hardware, ( extra $) which is really not necessary.
	This is NOT correct.  What actually happens (as I understand it, remember I
only live here) is that the INIT code does some stuff to the data to preprocess
it but that the GRAPPLER itself does what it has to do to get the data to the
HP, WITHOUT LOSS OF RESOLUTION!!  This means that you always get 300dpi.  

>   The correct solution is to write a DeskJet driver that gets
>"Choosen" like the Apple drivers.
	Agreed (and so does the programmer!) but it was decided that due to the lack
documentation on printer drivers (as you describe) that piggy backing onto the
LQ driver was a good alternate plan. They are working on their own driver now,
but this was a first shot, and it put the product out on the market!


+---------------------------------+-----------------------------------+
+                                 +  Any thing I say may be taken as  +
+   Leonard Rosenthol             +  fact, then again you might decide+
+   President, LazerWare, inc.    +  that it really isn't, so you     +
+                                 +  never know, do you??             +
+   leonardr@uxe.cso.uiuc.edu     +                                   +
+   GEnie:  MACgician             +  MacNET: MACgician                +
+   Delphi: MACgician             +                                   +
+                                 +                                   +
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