[IPP] Microsoft has reviewed the IPP Transaction-Based Printing Extensions specification and has comments

[IPP] Microsoft has reviewed the IPP Transaction-Based Printing Extensions specification and has comments

[IPP] Microsoft has reviewed the IPP Transaction-Based Printing Extensions specification and has comments

Michael Sweet msweet at apple.com
Fri Sep 6 13:59:51 UTC 2013


Justin,

Thank you for your feedback!  Quick comments inline...

On Sep 5, 2013, at 6:06 PM, Justin Hutchings <justhu at microsoft.com> wrote:
> -          OpenXPS has a MIME type of application/oxps, not application/OpenXPS (http://www.iana.org/assignments/media-types/application/oxps)

Oops, will fix.

> -          This spec appears to have a bunch of content which is completely unrelated to the transaction based printing. Why are we throwing these into what would otherwise be a very straightforward, to-the-point spec?

These have particular application to commercial print services and service discovery.

> o   Print-scaling-supported
> o   Print-scaling-default

These provide control over the final imposition/scaling of the document data on the output media - important particularly for commercial print services.

> o   Printer-dns-sd-name

This is used for service discovery; we need to have a way to configure the service name.

> o   Printer-kind

This is used for service selection/filtering - again, if you are looking for a print service that supports the kind of document you are printing, you need this information.

(this is also part of the DNS-SD TXT record, but DNS-SD is not the only way to do discovery)

> o   Jpeg-*
> o   Pdf-*

These are used to inform the Client of limits for direct photo and PDF printing - having dealt with a lot of commercial print shops over the years, it is VERY important for the Client to be able to know whether they support a particular flavor of PDF or have limits in the maximum size/dimensions of print files.

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair

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