Sorry for the late summary.
Thanks to the following who kindly spent time to respond to my question:
Gernot M. Fuchs
David Gadbois
Zhenya Gurvich
Richard L. Eisenman
joe_at_resptk.bhp.com
David M. Walters
Johannes Grosen
Wandfluh Roland
Ray Bellis
Robert J. Budden
Rudi Boerner
Andy Ram
The summary is:
Most suggested to get a text to PostScript converter or write your own
script wrap. 
My solution is:
Move the printer server to a sun sparc 20 and have JetAdmin(available from
HP web site) installed on that host.
My original question is:
> Hi,
> 
> Our DEC 3000/400 running OSF1 3.2 is used as the printer 
> server of the subnet. The subnet includes various UNIX systems. 
> All print jobs are sent to a filter on this host. The filter 
> converts ascii files into postscript and passes postscript files unchanged. 
> The output of this virtual printer goes to a physical printer HP 
> Laser-jet 4 M Plus on the subnet. 
> 
> The content of the filter file is:
> 
> #!/bin/sh
> (cat - | /usr/lbin/ln03rof 2> /dev/null) |lpr -Praw
> 
> The entries of the filter and the HP Laser-jet in printcap are:
> 
> lp|lp0|0|lp0|hplj4:\
>         :lf=/usr/adm/lperr:\
>         :ff=NULL:\
>         :mx#0:\
>         :of=/usr/lbin/printfilter:\
>         :sh:\
>         :sf:\
>         :lp=/dev/null:\
>         :rw:\
>         :sd=/usr/spool/lpd:
> 
> raw|hp0|hplj4raw:\
>         :af=/usr/adm/lpacct:\
>         :if=/usr/lbin/hplaserpsof:\
>         :lf=/usr/adm/lperr:\
>         :mx#0:\
>         :of=/usr/lbin/hplaserpsof:\
>         :pl#66:\
>         :pw#80:\
>         :rm=hplj4:\
>         :rp=raw:\
>         :rw:\
>         :sd=/usr/spool/raw:\
>         :xf=/usr/lbin/hplaserpsof:
> 
> 
> Currently, we do not have any banner page. This results in frequent pile-up
> of some unclaimed printout.
> 
> I tried to turn the banner page on. It worked fine for ascii
> files. But for a postscript file, the filter sees the banner page
> first before '%! so it thinks this is an ascii file. The output of
> a postscript file turned out to be a banner page plus pages of ascii 
> characters.
> 
> I do not have any documents about the system. I wonder where I should
> look into or look for help?
> 
> Is there a better filter that can recognize the banner page?
> 
> Thanks in advance.
> 
> Jane Qu
> qu_at_madrad.radiology.wisc.edu
Received on Fri Apr 26 1996 - 23:55:09 NZST