On Fri 13 Aug 2021 at 06:29:52 -0400, Polyna-Maude Racicot-Summerside wrote:
> Hi, > > On 2021-08-13 6:12 a.m., Brian wrote: > > On Thu 12 Aug 2021 at 18:56:58 -0400, Polyna-Maude Racicot-Summerside wrote: > > > >> Hi, > >> > >> On 2021-08-12 6:27 p.m., Brian wrote: > >>> On Thu 12 Aug 2021 at 15:33:26 -0400, Polyna-Maude Racicot-Summerside > >>> wrote: > >>> > >>>> Hi, > >>>> > >>>> On 2021-08-12 3:22 p.m., Brian wrote: > >>>>> On Tue 10 Aug 2021 at 18:29:02 -0400, Polyna-Maude Racicot-Summerside > >>>>> wrote: > >>>>> > >>>>> [...] > >>>>> > >>>>>> I'm using a Xerox B205 MFC and it's fully supported. Yes it's laser but > >>>>>> the reason I am writing this message regard something else. > >>>>>> > >>>>>> It's the support of MOPRIA. > >>>>>> Even if it's mostly made for Android, what it does is offer a discovery > >>>>>> and printing protocol compatible with all CUPS system (will publish IP > >>>>>> endpoint that support PostScript, PCL and PDF, all depending on the > >>>>>> printer but at least one of them). Regarding the scanner, it will > >>>>>> support sending by email thru the use of a SMTP server account. > >>>>>> > >>>>>> So I think we can say these devices will be supported by Linux (and > >>>>>> Debian). > >>>>> > >>>>> I was a bit taken aback when you advocated Mopria as a criterion for > >>>>> determining whether a printer could be operated driverlessly on Debian. > >>>>> But is it the *best* criterion? > >>>>> > >>>>> I've now got my head around it. > >>>>> > >>>>> Surely, it is better looking for AirPrint support in the printer specs > >>>>> to determine the driverless capabilities of printer? > >>>>> > >>>> > >>>> Have you looked what does Mopria is ? > >>> > >>> I have examined the aims and objectives of the Mopria Alliance in > >>> excrutiating detail. > >>> > >>>> It require that the printer (and scanner) offer : > >>>> Printing thru the use of IPP protocol > >>> > >>> Correct. > >>> > >>>> Possibility to send the data in PDF format directly (or JPG) > >>>> Auto discovery of the services offered thru "Bonjour". > >>> > >>> Please give a link at the Mopria website substantiating your clain that > >>> a Mopria certified device should be ca[able of accepting PDF as a PDL > >>> in addition to PWG raster and PCLm. > >>> > >> Like already written in my first post regarding this issue : > >> https://mopria.org/spec-download > > > > That is a link to an HP scanning specification. Maybe I was less than > > clear that printing and printers were the focus of my attention, not > > scanning. > > > >>>> And all of the condition make a printer pretty much driver less. > >>>> > >>>> There's no link with you talking about AirPrint. > >>> > >>> That avoids any meaningful dialog (and is incorrect). > >> > >> Can you explain to me what does AirPrint has to do with driverless > >> printing ? Can you explain to me if AirPrint allow my printer automatic > >> discovery ? IPP ? JPEG/PDF direct printing ? > > > > There are three criteria for a printer to be regarded as driverless. > > > > 1. The transport protocol must be IPP. Apple AirPrint uses it. > > 2. There must be a discovery protocol, mDNS/DNS-SD. Apple AirPrint uses > > it and calls it Bonjour. > > 3. There must be a PDL common to the client and the printer. > > > > It is the third criterion in relation to Mopria that I am concerned > > with. As you said above: > > > > > ...(will publish IP endpoint that support PostScript, > > > PCL and PDF,... > > > > Leaving aside that PostScript and PCL are not acceptable driverless > > PDLs, I was intrigued by the information that PDF is a common PDL > > satisfying criterion 3 for a Mopria-certified printer. I read > > > > https://mopria.org/PDFs/Mopria_Whitepaper_092313.pdf > > > > which is from 2013. > > > > It says: > > > > > Page Description Languages WiFi Direct Services Print includes > > > PCL-m, PWG Raster > > > Standard Document Exchange Format JPEG, .png, PDF (future) > > > > I then hoped (forlornly, it turns out) that you might know the present > > status of PDF as a printing PDL in Mopria eight years afterwards. > > > > If you do not know, thats fine. We will leave it there. > > > > No one force you to nothing. I've already written that the printers > support PDF and JPEG, but this seems unreliable to you because I'm in > gendering from French Canada (as your good friend deloptes seem to believe). All I wanted was refernce. You seemed to be familia with Mopria so it did not seem a bad idea to post to the list. It turns out, as Curt posted, that a Mopria-certified certified device wants to see one of PWG raster, PCLm or PDF as a printer PDL. Rather strange that an image format is not specified. > Sorry if I don't keep a notepad and bookmark of all the information I > collect. The simple fact the the dozen of printer I installed and dealt > with, all being chosen on the only fact of being Mopria supported were > offering JPEG and PDF (plus more). > > Maybe I'd have more interest in doing some research to help you out, as > you seem to need some hard proof regarding Mopria. But the interest in > doing so go pretty low when I consider the type of rudeness and lack of > respect you show in your messages. I have no idea what you are talking about here. > > Hope you got all you needed as information. You were rather helpful. You and Curt helped me get my ideas sorted. -- Brian.
