On Fri 31 Jan 2020 at 15:25:30 +0100, Till Kamppeter wrote: > On 31/01/2020 14:03, Brian Potkin wrote: > > I would say 100% of popular network printers available for users to > > purchase in at least the past five years have AirPrint. For our > > purposes this is the defining aspect of driverless. A number of devices > > is USB only. > > How common are USB-only printers vs. network printers?
I do not know and have never done a survey to find out. My guess would be very few modern devices, and the ones I came across I didn't make a note of the models. The canon MG2550S is one such. > Do modern USB-only > printers do IPP-over-USB? I have no idea how one goes about finding this out without the output of 'lpusb -v', whether the device is USB+network or USB-only. I've never seen anything in a printer's specs that mentions IPP-over-USB. > Or is there still a substantial fraction of users > using printer drivers due to USB-only printers? Not from my observations. With a network+USB device a user chooses a USB connection (IMO) either from habit or because (for some reason) they say they find it easier. When encouraged, they take the network option and happy to have a working printer. > Independent of this we should generally recommend network multi-function > devices to Linux/Chrome OS/free-software-OS users if they want to print > and/or scan. Agreed. I think that many, many users do take this route. Regards, Brian.
