Michael,
> On Jun 23, 2025, at 4:49 PM, Michael Ziller <mziller at microsoft.com> wrote:
> ...
> However for blank stationery paper, having two entries for the same (media x media-type x media-source) 3-tuple, which isn't the case for the pre-printed or envelope cases (since different flap locations are different long-flap media), isn't really showing how to load the paper into the tray. For blank paper types, is the suggestion for the printer to have 2 entries here for each 3-tuple combination - one for a Portrait dialog option and one for a Landscape dialog option (I don't see this yet in current printer media-col-database implementations)? This would potentially double the media-col-database size. But perhaps that's needed?
I don't think so.
The whole purpose of media-source-properties is to tell the client the (correct) orientation to use when printing on "special" media, and whether to produce portrait or landscape (either rotation) raster data for optimal print speeds.
When you have a generic media sheet with no preferred orientation, it is up to the client/user to decide which of the orientations to use.
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Michael Sweet