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From: milo@ndmath.UUCP
Newsgroups: comp.sys.mac
Subject: Slow Laserwriter Halftones?
Message-ID: <203@ndmath.UUCP>
Date: Sun, 29-Mar-87 19:08:21 EST
Article-I.D.: ndmath.203
Posted: Sun Mar 29 19:08:21 1987
Date-Received: Tue, 31-Mar-87 01:16:05 EST
Organization: Math. Dept., Univ. of Notre Dame
Lines: 21

Recently, I got a program which takes a data file with an 8-bit greyscale
picture in it, converts it and downloads it to a laserwriter for halftone
output.  The program was called "halftone".

I have a little problem though...the program seems a lot slower than it should
be.  It takes about 20 minutes to get a halftone of a 420x320 (130K) file, 
larger files take up to an hour.  For some reason this doesn't seem right since
the program only has to send some postscript "image" operator setup commands
then a copy of the datafile.  It seems like transfering a 130k file shouldn't
take more than a few minutes at Appletalk speed (the Mac and LaserWriter are
the only things on the cable).

Any idea what the holdup might be?  If it sounds like the problem is in the
halftone program I could write my own...but if it is natural for the transfer
of a 130k halftone and it's processing to take that long then I don't want to 
waste my time.

Greg Corson
19141 Summers Drive
South Bend, IN 46637
(219) 277-5306 (weekdays till 6 EST)