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From: laser-lovers@uw-beaver
Newsgroups: fa.laser-lovers
Subject: re: TeX on LN01S and LN03
Message-ID: <1373@uw-beaver>
Date: Wed, 3-Jul-85 05:24:46 EDT
Article-I.D.: uw-beave.1373
Posted: Wed Jul  3 05:24:46 1985
Date-Received: Mon, 8-Jul-85 01:05:28 EDT
Sender: daemon@uw-beaver
Organization: U of Washington Computer Science
Lines: 27

From: lucas@cmu-psy-a (pete lucas)

The LN01, LN01S, and Xerox 2700 all use the same font format.  The LN03 uses
a completely different one called the "DEC Common Font File Format".  It is
an elaborate and quite general scheme with provisions for kerning
information, detailed machine-usable descriptions of character and font
attributes, printer<->screen font mapping for WYSIWYG applications, and lots
more (although much of this is not supported in the LN03 itself).  This
format is also used for screen fonts in recent DEC workstation offerings.
DEC keeps threatening to publish this format, but I haven't seen it
available yet.

All DEC laser printers use ANSI escape sequences.  The LN01S is virtually
identical to the LN01 with Tektronix graphics emulation added.  The LN03 is
also very similar, except that it is somewhat more capable (e.g., you can
selectively delete fonts on the LN03 but not the LN01) and some of the
defaults are different.  We were able to make SCRIBE work on the LN03 with
only a few minor database changes to the LN01 support.

The LN03 can do bitmaps at 150dpi, but is subject to band-buffer imposed
complexity limitations.

Finally, if you plan on running your LN01S at high volume, let me suggest
that you compute the number of LN03s you could purchase each year for the
price of the DEC service contract (including heavy-usage charges) on the
LN01S.
				-PAL