[sci.electronics] Data loss on printers

mcovingt@athena.cs.uga.edu (Michael A. Covington) (01/22/91)

In article <26410@uflorida.cis.ufl.EDU> srb@beach.cis.ufl.edu () writes:
>
>     We have EPSON FX 286, and Fujitsu DL2600 printers connected to
>     a Unix box (NBI 520).  Most of the time they work alright.  Randomly
>     there occur a few problems.  Like the loss of a carriage return(two lines
>     printed on the same line), or loss of a few lines.  First of all what are
>     all the possible reasons for this to happen?  And is there a way to 
>     achieve a 100% reliability.  Any information in this matter would be
>     appreciated.
>

Are they serial or parallel?

Sounds like a handshaking problem. Handshaking is the process by which
the printer tells the computer that its buffer is full and no more data
should be sent for a while. Try adding "ms=crtscts" to your printcap
entry. Or check the printer manual to see what kind of handshaking the
printers want, and check your UNIX manuals to see that your printcap file
agrees with it.