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Re: [Gimp-print-devel] [pam.roberts@virginnet.co.uk: [linux-usb] Epson Stylus Color 760]
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From: Karl H. K. <kh...@kh...> - 2000-02-06 13:50:07
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On Sun, Feb 06, 2000 at 10:24:58PM +0900, sh...@al... wr= ote: > > This came just in from the linux-usb mailing list. Does anybody > > know about these initialization strings that are sent by the > > Windows drivers? I've seen something similar with the 740 driver, > > however the job prints even when I remove this special init string. > > The stuation with the 760 seems to be different. >=20 > Hmph. Interesting. I completely failed to get my 750 working over USB. > I made several attempts, and then read the linux-usb mailing list archives > and found a post from another 750 owner describing the same problems. > I briefly joined the list, but I was overwhelmed by the traffic. >=20 > Why doesn't Epson *document* stuff like this? Is there some big trade > secret hidden in this init string? Not necessarily a trade secret. Often times companies are reluctant to give out information to hide other things (like bad design). I don't know what the particular reason is for Epson, but they let you get access to this=20 information after signing a NDA. One of the things you only get access to is the ink levels in the printer. The Windows driver lets you see how=20 much ink is left in the two tanks, it also let's you clean the jets and calibrate the print heads. All this stuff is probably hidden in some way or another in this init string. E.g. I guess that the print head calibration is not stored on the printer. This is probably information that the driver sends down with every print job (or does it in software by itself). There is a utility to do this on Linux, the author signed the NDA, and so= =20 there is no source code, just a library that you can use in your own=20 projects: http://home.t-online.de/home/jj.sarton/startE.htm=20 There is a link "Utilites for Epson" that downloads this tool. Karl Heinz --=20 Karl Heinz Kremer kh...@kh... http://www.khk.net ICQ: 41190739 |
