Chris,
> On Nov 20, 2020, at 1:00 PM, Rizzo, Christopher via ipp <ipp at pwg.org> wrote:
>> Dear PWG,
>> PWG 5100.3 section 3.13.2 documents keyword values for media-type. However, this list is incomplete for what our products need to report (for example, differentiation between photo-glossy vs. photo-matte, recycled paper, heavy cardstock vs. light cardstock, pre-punched etc.)
Correct, we are in the process of revising 5100.3, but all of the media-col content was moved to PWG 5100.7-2019 (JOBEXT 2.0) and the media type names were long ago moved to PWG 5101.1-2013 (MSN 2.0)
> RFC 8011 leads me to the IANA IPP registry, which leads me to PWG 5100.7, which leads me to PWG 5101.1, which leads me to a list that does not intersect with the list in PWG 5100.3.
All of the 5100.3 values minus the "screen" types *should* be in 5101.1-2013 - that is where we started when I did MSN 2.0.
> The document makes reference to RFC2534 for a registry of other types. Where is this registry and how do I access it? Is this separate from the IANA IPP registry? And if the registered keywords are not sufficient are we forced to implement all media-type-xxx as name(MAX) instead of type3 keyword?
Actually type2 keyword now (type3 was eliminated by IETF), and the IANA IPP registry is now the master registry for media-type values. RFC 2534 was about specifying media for web pages and honestly has no relation to the current CSS media handling.
> Going further, how does one go about registering new media-type keyword values?
The same as any other IPP keyword value - send an email to the list with your request and we'll discuss it.
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Michael Sweet