[IPP] Potential errata/update for PWG Raster Format and/or IPP Everywhere specs

[IPP] Potential errata/update for PWG Raster Format and/or IPP Everywhere specs

[IPP] Potential errata/update for PWG Raster Format and/or IPP Everywhere specs

Michael Sweet msweet at apple.com
Wed May 21 15:36:55 UTC 2014


Smith,

On May 21, 2014, at 11:22 AM, Kennedy, Smith (Wireless Architect) <smith.kennedy at hp.com> wrote:
> Hi Mike,
> 
> Since “attempted” is so squishy, why not mandate “guaranteed”?  Including “attempted” seems like a loophole.

If there is sufficient support for "guaranteed", then certainly.  But I have yet to see a printer report "guaranteed"...


> On 2014-05-21, at 7:42 AM, Michael Sweet <msweet at apple.com> wrote:
> 
>> All,
>> 
>> It has come to my attention that neither the IPP Everywhere nor the PWG Raster Format specs explicitly call out required values for the "pdl-override-supported" Printer attribute. This attribute specifies whether the Printer can override embedded job ticket information (such as media size) when requested in a Job via the "ipp-attribute-fidelity" or "job-mandatory-attributes" Job Template attributes.
>> 
>> Generally speaking, Printers SHOULD support PDL override for the standard PDLs in IPP Everywhere, including PWG Raster, JPEG, and PDF.  Typically this means forcing prints to a single media/size or forcing simplex/duplex output, and is particularly important for JPEG.
>> 
>> My recommendation is for us to add the following conformance statement in a future revision of the IPP Everywhere specification:
>> 
>>   pdl-override-supported (type2 keyword)
>> 
>>   When reporting capabilities for the 'application/pdf', 'image/jpeg', or 'image/pwg-raster'
>>   MIME media types, Printers MUST report either 'attempted' or 'guaranteed' for the
>>   "pdl-override-supported" Printer attribute, 
>> 
>> Thoughts?
>> 
>> _________________________________________________________
>> Michael Sweet, Senior Printing System Engineer, PWG Chair
>> 
>> _______________________________________________
>> ipp mailing list
>> ipp at pwg.org
>> https://www.pwg.org/mailman/listinfo/ipp
> 
> _______________________________________________
> ipp mailing list
> ipp at pwg.org
> https://www.pwg.org/mailman/listinfo/ipp

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair

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