IPP> PPE - 5 ISSUES around "media-coll" Job Template attribute - media characteristics

IPP> PPE - 5 ISSUES around "media-coll" Job Template attribute - media characteristics

IPP> PPE - 5 ISSUES around "media-coll" Job Template attribute - media characteristics

Hastings, Tom N hastings at cp10.es.xerox.com
Wed Sep 20 19:47:22 EDT 2000


At the IPP telecon today, 5 issues were raised about the "media-coll" Job
Template attribute that is in the PWG Production Printing Extensions
document reviewed last week for the first time (though it has been an IPP
document for a year).  See:

ftp://ftp.pwg.org/pub/pwg/ipp/new_PPE/pwg-ipp-prod-print-set1-000605.doc,
.pdf

Send comments to both the ipp at pwg.org and pwg-ipp at pwg.org on these 5 issues,
since this issue relates to two existing IETF RFCs (1759 and 2534) as well
as IPP and Production Printing.  Also today's desktop printing systems pass
media attributes, such as size, color, type, and weight.


ISSUE 01:  Should "media-col" be moved to an IETF document, instead of a PWG
document since it is not limited to Production Printing?  There are two
other IETF standards on this subject:  RFC 1759 (Printer MIB) and RFC 2534
(Media Features for Display, Print, and FAX).


ISSUE 02: While describing that "media-weight-english" has been removed, it
was suggested that we should have a "media-info" (text(127)) which is just a
free form description of the medium, just like we have "printer-info"
(text(127)) for the Printer object.  Ok to add?


ISSUE 03: We don't have a way to indicate that the media is a envelope.  The
two above mentioned standards have a media-type that has the following
values which we should/could align with:

   RFC1759 (and new Draft Printer MIB):

        stationery       Separately cut sheets of an opaque
                         material
        transparency     Separately cut sheets of a transparent
                         material
        envelope         Envelopes that can be used for
                         conventional mailing purposes
        envelope-plain   Envelopes that are not preprinted and
                         have no windows
        envelope-window  Envelopes that have windows for
                         addressing purposes
        continuous-long  Continuously connected sheets of an
                         opaque material connected along the
                         long edge
        continuous-short Continuously connected sheets of an
                         opaque material connected along the
                         short edge
        tab-stock        Media with tabs
        multi-part-form  Form medium composed of multiple layers
                         not pre-attached to one another; each
                         sheet may be drawn separately from an
                         input source
        labels           Label stock
        multi-layer      Form medium composed of multiple layers
                         which are pre-attached to one another;
                         e.g., for use with impact printers.

The Internet FAX folks in RFC 2534 (Media Features for Display, Print, and
FAX) have for the ua-media feature tag:

     screen           A refreshable display
     screen-paged     a refreshable display which cannot scroll
     stationery       Separately cut sheets of an opaque material
     transparency     Separately cut sheets of a transparent material
     envelope         Envelopes that can be used for conventional
                      mailing purposes
     envelope-plain   Envelopes that are not preprinted and have no
                      windows
     continuous       Continuously connected sheets of an opaque
                      material

So they borrowed from the Printer MIB, added 'screen', and 'screen-paged',
combined 'continuous-long' and 'continuous-short' into 'continuous', and
dropped: 'envelope-window', 'tab-stock', 'multi-part-form', 'labels', and
'multi-layer'.


The "media-col" collection has the following member attributes that
duplicate some of these values with more specific values:

	media-opacity (type3 keyword)   - covers 'stationery' vs.
'transparency'
	media-tabs (type3 keyword)      - covers 'tab-stock'
	media-order-count (integer(1:MAX))  - covers 'multi-part-form'
	media-label-type (type3 keyword | name(MAX))  - covers 'labels'

leaving 'envelope', 'envelope-plain', envelope-window', 'continuous-long',
'continuous-short', and 'multi-layer' NOT expressible in IPP. 

IDÉE 04: How about adding a "media-type" (type3 keyword | name) which has
keyword values that are identical to the Printer MIB?

ISSUE 05:  Should we add the Internet FAX values: 'screen', and
'screen-paged'?

Thanks,
Tom







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