Tomomi,
> On Sep 10, 2025, at 10:07 AM, Tomomi Shiraki via ipp <ipp at pwg.org> wrote:
>> Hello Mike,
>> Thank you for your reply. I understand that although the client may be able to rotate for paper settings with long-edge feed, the printer should not always expect this to happen. And it is recommended that the printer be able to perform rotation itself if a job with the different orientation is received.
>> I have some additional questions.
>> 1. Some of our printers are designed to feed standard-size paper such as A4 in a long-edge direction. For these printers, although it is possible to implement rotation on the printer side, doing so may affect print speed.
Yes.
> We believe that performing rotation on the client side, when possible, is preferable in order to minimize inconvenience for customers migrating from driver-based environments.
Of course.
> On the other hand, I understand that your perspective is that only one set of media-source-properties should be notified for each tray in media-ready.
> If printers want to convey the following two requests to the client, what would be the appropriate way to notify them in media-col-ready?
> - The tray is loaded with media in a long-edge feed orientation, and, if possible, it is desired to perform rotation for long-edge feed paper by client side.
You report a "media-source-properties" collection value with "media-source-feed-direction" = 'long-edge'.
> - The tray contains plain paper, and both portrait and landscape documents can be printed.
You don't report the "media-source-feed-orientation" member attribute.
> 2.
>> I hesitate to make it about media-type since you'd always be playing "catch up." Rather, the presence of media-source-orientation should indicate the directionality of the media.
>> We have considered media-source-feed-orientation and media-source-feed-direction to be properties that indicate the feed direction. Therefore, we believed that by notifying the client of just one set of these properties per one paper tray, the client would be able to recognize the paper orientation and appropriately place the image on the paper according to the user’s selected orientation (portrait or landscape).
> Some printers currently on the market notify only one set of media-source-properties for each tray media.
> Do that may lead that client restricts the print settings for users (users cannot select portrait or landscape in the print settings)? We have concern it could lead to a poorer user experience.
"media-source-feed-direction" is used for indicating long/short-edge feed.
"media-source-feed-orientation" is used for indicating the "directionality" of media.
You only provide the member attributes and values when that value is required or (in the case of "media-col-database") when you are communicating a specific combination that is supported.
More and more I am thinking we need to amend the discussion in PWG 5100.7 to make this clearer...
________________________
Michael Sweet