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CUPS should be able to use different paper(tray) for job-sheets (support IPP attribute 'job-sheets-col') #5459

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KurtPfeifle opened this Issue Dec 11, 2018 · 2 comments

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@KurtPfeifle
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KurtPfeifle commented Dec 11, 2018

CUPS is playing a core role in many educational institutions and other large organisations where thousands of users print their documents on a few dozen "public" printers. In these environments it is very common to enforce -o job-sheets=some-custom-postscript for each job to be printed on colorized paper so that they serve as separator sheets, with the actual job-sheet containing PostScript code to do the magic of tray switching (setpagedevice) as well as code to fill its page contents with time-at-processing, job-originating-user-name and what-not variable values.

To be honest, this method has always been a mild "hack", only necessitated because CUPS did never have a "canonical" support to pick a different tray for job-sheets.

By default, "legacy" CUPS always printed job-sheets on the same paper as the main job documents. The lack of direct support for banner pages from a different tray has always been one of the biggest deficiencies of CUPS -- and it was easily overcome by many organizations in need of it through their usage of custom PostScript "hacks".

But this situation has worsened now: When using the "new" job-sheet format (application/vnd.cups-banner), where the job-sheet is supposed to be dynamically created as a PDF for each job by a x-bannertopdf filter there is no means any more to get banners printed on different media as compared to the main job.

It is time to fill the gap. Else PostScript job-sheets will still be the holdout and prevent a full-scale PDF workflow.

It looks like IPP (but only the IPP extension for "production printing" purposes) already provides an appropriate job attribute for what's needed: job-sheets-col.

However, CUPS does not support this yet. It should, soon!

@mschee

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mschee commented Dec 13, 2018

Yes, this is would be an important and valuable feature for CUPS!
Colored separator sheets that are deposited in a special paper tray are especially important when using CUPS for a large number of daily print jobs from different users like in educational institutions.
It considerably simplifies and accelerates the process of sorting the print jobs.
Thumbs up for this feature.

@michaelrsweet

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michaelrsweet commented Dec 13, 2018

Considering for a future release.

@michaelrsweet michaelrsweet self-assigned this Dec 13, 2018

@michaelrsweet michaelrsweet added this to the Future milestone Dec 13, 2018

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