[IPP] Reporting loaded custom sizes

[IPP] Reporting loaded custom sizes

[IPP] Reporting loaded custom sizes

Michael Sweet msweet at apple.com
Thu Aug 28 14:16:05 UTC 2014


On Aug 28, 2014, at 9:52 AM, Hills, Lee D <Lee.Hills at xerox.com> wrote:
> Hi,
> When I load a custom cut sheet size, say 4.125 x 11 inch, into the multipurpose tray of my printer, which, if any, of the following IPP attributes should the printer report the ‘ready’ / loaded size in?

We haven't been explicit about this sort of usage, but generally one-off custom sizes (that are created by the printer) should only be reported in the "media*-ready" attributes, while custom sizes created by the user/administrator (i.e. a site-specific form size) that can be loaded in any tray should also get reported in the "media*-supported" and "media-col-database" attributes.  This is because a Client can still specify the custom size using the min/max information in the "media*-supported" and "media-col-database" attributes and can discover the currently loaded media in the "media-ready" and "media-col-ready" attributes.

For your specific example:

> media-supported
>   custom_current.tray-1_4.125x11in
>   custom_min_3x5in, custom_max_8.5x14in

Don't report the printer-synthesized size in media-supported...

> media-ready
>   custom_current.tray-1_4.125x11in

But *do* report it here.
> media-size-supported
>   ...
>   { x-dimension 10477 y-dimension 27940}
>   { x-dimension 7620-12700 y-dimension 21590-35560 }

Don't report the printer-synthesized size in media-size-supported...

> media-col-database
>   ...
>   { media-size {x-dimension 10477 y-dimension 27940} ... }
>   { media-size {x-dimension 7620-12700 y-dimension 21590- 35560 } ... }

And don't report the printer-synthesized size in media-col-database...
> media-col-ready
>   { media-size {x-dimension 10477 y-dimension 27940} ... }

But *do* report it here.

Michael Sweet, Senior Printing System Engineer, PWG Chair

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