Re: All-in-One printer: HP OfficeJet 8012
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.
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