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:
>>>> 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,
>> 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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