Subject: Re: [IPP] Updated FIXED draft of IPP Driverless Printing Extensions v2.0 posted for review

From: "Rizzo, Christopher via ipp" <[email-masked]>
Date: Fri, 8 May 2020 19:43:54 +0000

Hi Smith,

There are lots of emails to sift thru.  The latest I have for Driverless Printing Extensions v2.0 for review was received 2/4/20 at 1:32 PM Pacific time, so these notes refer to that version.

Comments regarding printer-supply:

Lines 1852, 1853: "because most Printers don't have multiple markers".  Would it be better to say "prtMarkerSuppliesMarkerIndex" (markerindex) is OPTIONAL in "printer-supply" for printers that have a single marking engine, REQUIRED for printers that have more than one?

Section 6.7.5.1 - Table 20:

1. Why is unit RECOMMENDED and not REQUIRED?  Isn't it possible that maxcapacity and level would have less meaning if a unit for those values is not provided?  Or is there an assumption that if unit is not provided, then the units are in percent and therefore valid level values are between 0 and 100 and maxcapacity is 100 (%)?

2. Same for class.  If class is receptacleThatIsFilled(4), then a level of 5% really means lifetime remaining is 95%, but could be incorrectly interpreted as lifetime remaining 5% if class is not provided.

Section 6.7.5.2

1. I do think it is very clear from the examples of section 6.7.5.4 that the listed objects (name value pairs) in each octetString do not have to be the same.  I also presume order does not matter as I believe the ABNF has specific rules (Sequence Group) for specific orderings, and a Sequence Group was not used to specify ordering in Figure 10?

Section 6.7.6.1

Line 2001 - remove "and" at end.

Thanks,
Chris

Christopher Rizzo
Xerox Corporation
GDG/Discovery/Advance Technology
26600 SW Parkway Ave.
Wilsonville, OR 97070-9251
Phone: (585) 314-6936
Email: [email-masked]

"The realization came over me with full force that a good part of the remainder of my life was going to be spent in finding errors in my own programs."
-Maurice Wilkes, Memoirs of a Computer Pioneer

From: ipp <[email-masked]> on behalf of PWG Workgroup <[email-masked]>
Reply-To: "Kennedy, Smith (Wireless & IPP Standards)" <[email-masked]>
Date: Tuesday, February 4, 2020 at 1:32 PM
To: PWG Workgroup <[email-masked]>
Subject: [IPP] Updated FIXED draft of IPP Driverless Printing Extensions v2.0 posted for review

Greetings,

I've just posted a FIXED updated draft of IPP Driverless Printing Extensions v2.0 and deleted the one I posted yesterday. Sorry for the false start if anybody was perturbed by that.

The new draft is available here:

https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippnodriver20-20200204.pdf
https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippnodriver20-20200204.docx
https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippnodriver20-20200204-rev.pdf
https://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippnodriver20-20200204-rev.docx

Changes in this revision include:

  *   Accepted all changes and made all recommended edits from the November F2F review, which stopped at section 6.2. Made substantial changes from the beginning:
  *   Reviewed and rewrote the Abstract and Introduction to better match the new title
  *   Reviewed and rewrote a number of the use cases and added new use cases that should have already been there
  *   Created table in section 4 mapping coordinating Use Cases and Design Requirements to the corresponding IPP additions defined in the body of the document
  *   Imported the IPP Presets registration document definitions to add them to this specification
  *   Moved "device-service-count", "device-uuid", "printer-organization", and "printer-organizational-unit" attributes and their associated use cases to IPP Enterprise Printing Extensions v2.0 [PWG5100.11-2020] because they are more aligned with enterprise printing than driverless printing

     *   Backed out this change in this new posting

  *
  *   Imported the IPP Presets registration document definitions to add them to this specification
  *   Resolved the "vendor-keyword" question for "print-color-mode" by adding "keyword" to the syntax and referring the reader to STD92 section 7.3.
  *   Modified a number of conformance requirements.
I'm afraid the next review will require starting at the beginning again, but I think the early sections taken from 5100.13 needed rewriting to match the title and to better cover the attributes that 5100.13 had already defined as well as the additions in this v2.0.

Smith

/**
    Smith Kennedy
    HP Inc.
*/

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