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Article #923Bit decay in laserwriters?
From: asw
Date: Thu, 12 Jun 1986 14:50
Date: Thu, 12 Jun 1986 14:50
36 lines
1870 bytes
1870 bytes
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
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%!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
UK JANET: asw@uk.ac.rl.vd |Rutherford Appleton Lab
Usenet: {... | mcvax}!ukc!rlvd!asw |Chilton, Didcot
ARPAnet: asw%rl.vd@ucl-cs.arpa |Oxon OX11 0QX, UK
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!whuxl!whuxlm!akgua!gatech!seismo!mcvax!ukc!warwick!rlvd!asw 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