IPP Mail Archive: IPP> PPE - 5 ISSUES around "media-col

IPP Mail Archive: IPP> PPE - 5 ISSUES around "media-col

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

From: Hastings, Tom N (hastings@cp10.es.xerox.com)
Date: Wed Sep 20 2000 - 19:47:22 EDT

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    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@pwg.org and pwg-ipp@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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