[IPP] IPP Scan - Is Push scanning mandatory?

[IPP] IPP Scan - Is Push scanning mandatory?

[IPP] IPP Scan - Is Push scanning mandatory?

Michael Sweet msweet at apple.com
Tue Feb 18 13:09:44 UTC 2014


On Feb 14, 2014, at 6:07 PM, Soma Meiyappan <Soma.Meiyappan at conexant.com> wrote:
> Gentlemen,
> The proposed Scan2 seems to bear a resemblance to FaxOut’s send-from-glass capabilities. Of course, one may consider a slight difference in scan capabilities between a scan service and a faxout service for the scan service to be a more suitable host for non-fax digital sends. However, should we consider any potential duplication of features between IPP services and a confusion between clients/servers on the service where this functionality will be made available? I agree that it does not prevent device manufacturers from implementing similar functionality through both IPP services. But I wanted to hear your thoughts on this.

This does come up from time to time.

FaxOut has certain legal requirements that Scan does not. So, you'll find in the Scan spec a prohibition to support tel:, fax:, and other facsimile schemes because the Scan service does not support the things required for it.

And while we don't have a similar prohibition in the FaxOut service for non-fax schemes, the addition of fax headers to the scanned documents may make using FaxOut as a replacement for Scan-to-Email (for example) less likely, unless the user truly wants to meet some arbitrary legal requirement (i.e. faxed documents are acceptable, digital documents are not...)

*If* there is a use case for discovery of fax services that can deliver using a particular URI scheme, we could add a corresponding "Fax2" TXT key, however nobody has asked for it...  (and FWIW, I would argue it would be more useful than the Scan2 key, since at least then you are discovering a delivery capability that cannot be easily reproduced in software...)

Michael Sweet, Senior Printing System Engineer, PWG Chair

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