Hi Ralph, Ralph Little writes:
> Hi, > > On 2020-05-20 2:08 a.m., Olaf Meeuwissen wrote: >> Hi, >> >> I forgot to mention that we don't have documentation on either of the >> two protocols that wrap the ESC/I and ESC/I-2 protocols for network >> communication. >> >> Olaf Meeuwissen writes: >> > The secretiveness of printer/scanner manufacturers regarding their > protocols absolutely baffles me. Me too. Especially since Wireshark makes it insanely easy to capture the packets over both USB and the network. > I remember a time when printers came with a manual containing the entire > protocol to allow you to program it. The documentation I downloaded (it seems to be no longer available) is much like that. There is even a helpful (though very dated) manual explaining what the various image processing methods are good for with examples using different parameter settings. > A rich software infrastructure is one of the things that sells devices. > Who wouldn't want to sell more devices? That cuts both ways. Us keeping all these two-decade old scanners usable (from old PCs, even!) isn't really going to help sell more devices ;-P Hope this helps, -- Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27 GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13 F43E B8A4 A88A F84A 2DD9 Support Free Software https://my.fsf.org/donate Join the Free Software Foundation https://my.fsf.org/join
