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SOLVED: postscript -> ghostscript -> HP8600

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    Thanks for all your help.

    The download of HPLIP from HP does NOT include hpijs in its setup,
and in fact I can't find out where to down load it.  Without hpijs
installed on the system, GS can run it, so you get errors.

    Yum however in Centos 7 does download both hpijs and hplip,
and together they work for Office Jet PRO 8500, not 8600.

    No matter they are almost identical as far as graphics go.

    So thanks for all you help again.

    Homer

Martin Leese <please@see.web.for.e-mail.invalid> wrote:
> luser droog wrote:
> 
>> On Thursday, June 14, 2018 at 8:38:48 PM UTC-5, ho...@lightlink.com wrote:
>>> I have a properly setup CentOS 7 box, running the latest
>>> ghostscript.
>>>
>>>     I use gnuplot to produce postscript plots which I wish to
>>> print on these newer HP Office Jet Pro 86xx which do not
>>> accept postscript.
>>>
>>>     I am told I can use the HPLIP package to make ghostscript
>>> properly convert postscript to HP8600 format.
>>>
>>>      However I have found no serious documentation on how to use
>>> ghostscript with HPLIP, and the HPLIP web site is horrid.
>>>
>>>     The command line I am told is:
>>>
>>> #!/bin/bash
>>>  
>>> gs \
>>> -sDEVICE=ijs -sIjsServer=hpijs \
>>> -dIjsUseOutputFD \
>>> -sDeviceManufacturer="HP"  \
>>> -sDeviceModel="OfficeJet Pro 8600 E-aio n911a" \
>>> /tmp/data.ps     <- output of gnuplot.
>>>  
>>>        Which produces the following errors:
>>>
>>> Script started on Thu 14 Jun 2018 09:33:36 PM EDT
>>> [root@vm2 ~]# testgs
>>>
>>> GPL Ghostscript 9.07 (2013-02-14)
>>> Copyright (C) 2012 Artifex Software, Inc.  All rights reserved.
>>> This software comes with NO WARRANTY: see the file PUBLIC for details.
>>> GPL Ghostscript 9.07: **** Could not open the file  .
>>> **** Unable to open the initial device, quitting.
>>> [root@vm2 ~]# 
>>>
>>> Script done on Thu 14 Jun 2018 09:33:40 PM EDT
>>>
>>>      The errors are too cryptic for me to understand what they are
>>> referring to.
>>>
>>>      Thanks for your help.
>>>
>>>      Homer
>> 
>> ISTM that ghostscript can't open the output device. Possibly the
>> hpijs server (daemon?) needs to be running. Or it could be that
>> your vm isn't linking up to the host device so gs is getting dead
>> air or bad responses. 
>> 
>> So the things I'd check (if you haven't already) is that the VM
>> really can access the printer; and that the hplip package is all
>> installed and running. 
> 
> I am not sure if this helps or not, but I
> ran the script on my system.  This has an
> old version of Ghostscript running under
> Windows.  I get the error messages:
>     GPL Ghostscript 8.60: Can't start ijs
>         server "hpijs"
>     **** Unable to open the initial device,
>         quitting.
> 
> This suggests that the hpijs does not have
> to be running as Ghostscript will try to run
> it.
> 
>> It may be possible to work around some of these issues if you
>> specify an output file with sOutputFile=/tmp/gsout.hpij or
>> similar. gs may be about to create the output even if it cannot
>> access the real device or print server. You could then send 
>> file to printer some other way (in theory).
> 
> This looks like good advice to me.
> 

-- 
------------------------------------------------------------------------
Homer Wilson Smith   Clean Air, Clear Water,    Art Matrix - Lightlink
(607) 277-0959       A Green Earth, and Peace,  Internet, Ithaca NY
homer@lightlink.com  Is that too much to ask?   http://www.lightlink.com

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postscript -> ghostscript -> HP8600 homer@lightlink.com - 2018-06-14 21:38 -0400
  Re: postscript -> ghostscript -> HP8600 luser droog <luser.droog@gmail.com> - 2018-06-15 14:30 -0700
    Re: postscript -> ghostscript -> HP8600 Martin Leese <please@see.Web.for.e-mail.INVALID> - 2018-06-16 10:21 -0600
      SOLVED:  postscript -> ghostscript -> HP8600 homer@lightlink.com - 2018-06-17 23:22 -0400

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