>=20 > On Feb 24, 2012, at 7:20 AM, M.L. wrote: >=20 > I have access to a USB analyzer. I could trace what happens when I > print a simple document. I'm guessing it'll be quite a lot of data to > decode. Aren't there free software drivers for printers? CUPS or > something? I think you could figure out the protocol via the software. >=20 > --=20 > Martin K. MK If you use the USB analyzer , I would love to learn what you find out. ( = please mention printer model ) I want to be able to send bytes to the printer from Linux. Whatever works. =20 Gus --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .