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From: klg@dukeac.UUCP (Kim Greer)
Newsgroups: comp.lang.postscript
Subject: Re: every fourth output missing
Keywords: every postscript output missing
Message-ID: <1595@dukeac.UUCP>
Date: 12 Oct 89 12:06:42 GMT
References: <370@timer1.UUCP>
Reply-To: klg@dukeac.UUCP (Kim Greer)
Organization: Academic Computing, Duke University, Durham, NC
Lines: 21

In article <370@timer1.UUCP> fritz@timer1.UUCP (fritz) writes:
>I have several postscript files which are roughly 80000 bytes
>long.  When I send them through a spooler, every fourth file
>is non-existent, no page or anything.
>
>When I send 13 of these, I get 1,2,3,5,6,7,9,10,11,13 printed.
>If I shorten these files to 2500 bytes, I will get
>1,2,3,8,9,10,14,15,16
>
>I SUSPECT that an error occurs every fourth file and that the printer,
>an NEC LC-890, dumps its buffer and reads until an EOF.  For large

  I have noticed this very same type of thing with the same printer,
*after* I tried switching from 4800 baud to 9600 (but still without xon/xoff
alas).  Several "pages" in the same file (these were grayscale images
coming from stdio into lpr) would fail to print, but if split up and printed
a minute or so apart would do just fine.  My "solution": put a "sleep 30"
in a shell script wrapper to give each image time to finish before
the next set would come along.  This "works" in that overall print
time is still less than at 4800 baud.  BTW: I have had no problems that
I know of with character (and simple graphics) oriented output.