<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Unsubscribe <a href="mailto:starrtennis@gmail.com">starrtennis@gmail.com</a> sane-devel@alioth-lists.debian.net</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:paddy-hack@member.fsf.org">Olaf Meeuwissen</a><br><b>Sent: </b>Tuesday, September 29, 2020 2:14 AM<br><b>To: </b><a href="mailto:wsa@kernel.org">Wolfram Sang</a><br><b>Cc: </b><a href="mailto:sane-devel@alioth-lists.debian.net">sane-devel@alioth-lists.debian.net</a><br><b>Subject: </b>Re: [sane-devel] Q: improving epson2 for Epson 12000XL</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Wolfram,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Wolfram Sang writes:</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>> Hi Olaf,</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>>> Actually, I've found a reference in my dead tree specs that all other</p><p class=MsoNormal>>> values with the one byte limit are supported. 0x00 through 0x39 are</p><p class=MsoNormal>>> below the glass plate, 0x41 through 0xfe are above. Units unknown but</p><p class=MsoNormal>>> based on your observation of 0x59 being 25 steps away from 0x40 and it</p><p class=MsoNormal>>> corresponding to 2.5mm, I'd hazard a guess its 0.1mm assuming a linear</p><p class=MsoNormal>>> ramp.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> That is my assumption as well. But please note that the 0x59 value comes</p><p class=MsoNormal>> from Alessandro Zummo and was already existing in the epson2 driver.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I think you mean the epson backend. The 0x40 and 0x59 values trace back</p><p class=MsoNormal>to commit 64e36892a1, made on 2001-11-10.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>> I did not verify it yet because I was only scannning on glass. We</p><p class=MsoNormal>> might need a custom value later in case we build some frame, too, to</p><p class=MsoNormal>> avoid glass on glass contact. We will see.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Looking forward to your findings,</p><p class=MsoNormal>--</p><p class=MsoNormal>Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27</p><p class=MsoNormal> GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13 F43E B8A4 A88A F84A 2DD9</p><p class=MsoNormal> Support Free Software https://my.fsf.org/donate</p><p class=MsoNormal> Join the Free Software Foundation https://my.fsf.org/join</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>