On Fri, Apr 17, 2020 at 11:50:57AM -0400, Stewart C. Russell via talk wrote: > It's a bit more clever than that. All IPP/AirPrint printers *must* support a > basic bitmap format that is open and well-defined. IPP printers advertise > what formats they support: querying my Brother printer (using ipptool) says > it handles image/urf and image/pwg-raster. Some can also accept PCL and PDF. > > The internal routing of CUPS print jobs is done as PDF. CUPS is rather > lovely unless you want to see the internals. IPP allows printer > manufacturers to change hardware completely on the same model and still keep > working*. Since the most important question for any printer sold these days > is "Can I print from my iPhone?", IPP/AirPrint support is not going away. > Google Cloud Print, btw, *is* going away this year.
When did they change from postscript to pdf? Hmm a search seems to indicate quite a few years ago. I had never known it changed. I guess the change just worked. I am also surprised anyone prints from an iphone. Really? What are they printing? > (Apple owns CUPS, and AirPrint is their trade name for IPP.) > > The "dual core, 0.8 MHz" is more likely to be "dual core, 0.8 GHz". Dual > core Qoriq boards (typically Power, but sometimes ARM) are what powers so > much hardware we take for granted. > > cheers, > Stewart > > *: this makes sites like LinuxPrinting completely useless, alas, but makes > for cheaper printers. Well if they also want to work with windows drivers and a usb connection, they probably still have to maintain some kind of compatibility, although what format they use in their drivers to the printer could be really anything I suppose. -- Len Sorensen --- Post to this mailing list [email protected] Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
