[Printing-architecture] snmp - average-toner-coverage per page

[Predut, Marius]

> -----Original Message-----
> From: Johannes Meixner [mailto:jsmeix at suse.de]
> Sent: Wednesday, May 04, 2016 12:03 PM
> To: Predut, Marius
> Cc: printing-architecture at lists.linux-foundation.org
> Subject: Re: [Printing-architecture] snmp - average-toner-coverage per page
> 
> 
> Hello,
> 
> On May 3 16:35 Predut, Marius wrote (excerpt):
> > After I print page I want to know average-toner-coverage-per-page
> > (a kind of Cost per Page).
> > To do it are 3 possibilities:
> >
> > 1. Get the amount of toner used and rapport it to a
> >    standard (%5 coverage) - prices
> > 2. Get the effective printed area relative to the paper
> >    (supppoe user print only halp of paper) - less precise

I am tried to use SNTP protocol: prtMarkerCounterUnit and 
prtMarkerLifeCount OIDS to count the number of lines/characters.
To do this , the OID prtMarkerCounterUnit need to be updated  from default value(impressions) to  chars, lines, micrometers ,etc;
But seems this fild is ready only.
Is a way to use it?


> > 3. Get the stream from printer and analyze it.
> 
> 4. Get the PostScript stream while print job filtering
>     and analyze it.
> 
> Newer Ghostscript versions provide the Ghostscript
> devices ink_cov and inkcov that output ink coverage:
> -----------------------------------------------------------
> $ gs -q -dNOPAUSE -dBATCH -sDEVICE=ink_cov \
>   -sOutputFile=/tmp/ink_cov.out \
>   /usr/share/ghostscript/9.19/examples/colorcir.ps
> 
> $ cat /tmp/ink_cov.out
>   5.33833  5.95657  6.71122  4.25845 CMYK OK
> 
> $ gs -q -dNOPAUSE -dBATCH -sDEVICE=inkcov \
>   -sOutputFile=/tmp/inkcov.out \
>   /usr/share/ghostscript/9.19/examples/colorcir.ps
> 
> $ cat /tmp/inkcov.out
>   0.09991  0.08222  0.08234  0.08425 CMYK OK
> -----------------------------------------------------------
> See "Ink coverage output" in
> http://www.ghostscript.com/doc/current/Devices.htm#Test
> 

Thank you so much for this solution!
The ink_cov/ inkcov is can be ip address?

> 
> Kind Regards
> Johannes Meixner
> --
> SUSE LINUX GmbH - GF: Felix Imendoerffer, Jane Smithard,
> Graham Norton - HRB 21284 (AG Nuernberg)