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From: asw@rlvd.UUCP
Newsgroups: net.text
Subject: Bit decay in laserwriters?
Message-ID: <1438@rlvd.UUCP>
Date: Thu, 12-Jun-86 10:50:21 EDT
Article-I.D.: rlvd.1438
Posted: Thu Jun 12 10:50:21 1986
Date-Received: Tue, 17-Jun-86 09:04:33 EDT
Reply-To: asw@rlvd.UUCP (Antony Williams)
Distribution: net
Organization: Rutherford Appleton Laboratories, Atlas Buildings, U.K.
Lines: 36


Has anyone seen the folowing effect on LaserWriters?

We are using Sun LaserWriters.  In a recent document, I noticed
that some characters in Times-Roman (u,v,w,x,y,z) were printing
noticeably smaller than others (e,r,m,n).
I ran some tests (included below), and found that it only
happened on one particular printer, and only at 10pt size.
(This size is the default for troff -ms :-)
Power-cycling the printer fixed the fault, so I surmise
that it was a fault in the cached representation, not in the font
itself.  The question is: are laserwriters prone to bit decay?
    Tony
-------------------------
%!PS

% test file for characters printing too small

/tr /Times-Roman findfont def

/inch {72 mul} def

1 inch 9 inch translate
/teststring (wewrwmwn xexrxmxn ueurumun yeyrymyn zezrzmzn uwxyzermn) def

/showit {tr exch scalefont setfont 0 0 moveto teststring show 0 -0.25 inch translate } def

[ 16 15 14 13 12.5 12 11.5 11 10.5 10 9.5 9 8.5 8 7.5 7 6.5 6 ] {showit} forall

showpage
-- 
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Tony Williams					|Informatics Division
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