* [Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers
@ 2015-05-11 16:11 Till Kamppeter
2015-05-12 2:39 ` Michael Sweet
0 siblings, 1 reply; 4+ messages in thread
From: Till Kamppeter @ 2015-05-11 16:11 UTC (permalink / raw)
To: Open Printing; +Cc: Kumar, Sanjay
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
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers
2015-05-11 16:11 [Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers Till Kamppeter
@ 2015-05-12 2:39 ` Michael Sweet
2015-05-12 2:41 ` Till Kamppeter
0 siblings, 1 reply; 4+ messages in thread
From: Michael Sweet @ 2015-05-12 2:39 UTC (permalink / raw)
To: Till Kamppeter
Cc: printing-architecture@lists.linux-foundation.org, Kumar, Sanjay
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@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
> _______________________________________________
> Printing-architecture mailing list
> Printing-architecture@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/printing-architecture
_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers
2015-05-12 2:39 ` Michael Sweet
@ 2015-05-12 2:41 ` Till Kamppeter
2015-05-12 3:17 ` Michael Sweet
0 siblings, 1 reply; 4+ messages in thread
From: Till Kamppeter @ 2015-05-12 2:41 UTC (permalink / raw)
To: Michael Sweet
Cc: printing-architecture@lists.linux-foundation.org, Kumar, Sanjay
On 05/11/2015 11:39 PM, Michael Sweet wrote:
> The non-IPP USB scanners will not respond to a Get-Printer-Attributes request.
>
And IPP-over-USB devices without print functionality, like these
stand-alone scanners?
Till
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers
2015-05-12 2:41 ` Till Kamppeter
@ 2015-05-12 3:17 ` Michael Sweet
0 siblings, 0 replies; 4+ messages in thread
From: Michael Sweet @ 2015-05-12 3:17 UTC (permalink / raw)
To: Till Kamppeter
Cc: printing-architecture@lists.linux-foundation.org, Kumar, Sanjay
Perhaps I wasn't clear enough; I meant the IPP USB devices that do not implement the IPP part... :) You can expect a 4xx response (usually 404 Not Found) if you try to POST to /ipp/print.
> On May 11, 2015, at 10:41 PM, Till Kamppeter <till.kamppeter@gmail.com> wrote:
>
> On 05/11/2015 11:39 PM, Michael Sweet wrote:
>> The non-IPP USB scanners will not respond to a Get-Printer-Attributes request.
>>
>
> And IPP-over-USB devices without print functionality, like these stand-alone scanners?
>
> Till
>
_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair
^ permalink raw reply [flat|nested] 4+ messages in thread
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2015-05-11 16:11 [Printing-architecture] IPP(-over-USB) scanners - How to distinguish them from printers Till Kamppeter
2015-05-12 2:39 ` Michael Sweet
2015-05-12 2:41 ` Till Kamppeter
2015-05-12 3:17 ` Michael Sweet
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