[Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers

Tue May 12 02:39:08 UTC 2015

The non-IPP USB scanners will not respond to a Get-Printer-Attributes request.

> On May 11, 2015, at 12:11 PM, Till Kamppeter <till.kamppeter at gmail.com> wrote:
> 
> Hi,
> 
> The HPLIP developers have found certain stand-alone scanners (not MF devices) from HP for which on Ubuntu a CUPS queue got auto-generated. Under their USB interfaces there are IPP interfaces suggesting that these are IPP-over-USB scanners. Is there are way to distinguish IPP printers from IPP scanners easily?
> 
>   Till
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair