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<TITLE>sane-devel: Re: Parallel Scanners (UMAX Astra 1220P)</TITLE>
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<META NAME="Author" CONTENT="Doug Alcorn (doug@lathi.net)">
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<META NAME="Subject" CONTENT="Re: Parallel Scanners (UMAX Astra 1220P)">
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<H1>Re: Parallel Scanners (UMAX Astra 1220P)</H1>
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<STRONG>From:</STRONG> Doug Alcorn (<A HREF="mailto:doug@lathi.net?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<x7gr9a9shma.fsf@lathi.net>"><EM>doug@lathi.net</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Jun 07 2000 - 07:14:37 PDT
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"Michael Franz" <<A HREF="mailto:mvfranz@hotmail.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<x7gr9a9shma.fsf@lathi.net>">mvfranz@hotmail.com</A>> writes:
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<BR>
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<P><EM>> It seems that only the epson and mustek scanners are supported
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</EM><BR>
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<EM>> either directly or by treating the scanner as a SCSI device. How do
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</EM><BR>
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<EM>> I get started with the UMAX scanners?
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</EM><BR>
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<P>There are two pieces to using a scanner in Linux. First, the kernel
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<BR>
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must be able to communicate with the device. This is rarely a
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<BR>
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problem; even with USB scanners. The real problem comes with what
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<BR>
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sane calls the "backend". This is the piece that goes between the
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<BR>
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actual scanning user interface and the kernel itself. The backend
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<BR>
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must know how to control the scanner. This is different than just
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<BR>
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talking to the scanner.
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<BR>
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<P>Here's the bad news: UMAX doesn't release the command protocol for
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<BR>
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controlling their parallel or USB scanners. I have the UMAX 2000U
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<BR>
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scanner. The developement kernels (2.3.x) can recognize the scanner,
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<BR>
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but sane has no idea what to say to it.
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<BR>
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<P>You have two options. First, write a polite letter to UMAX requesting
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<BR>
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the scanner control information. This is probably a dead end. I have
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<BR>
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been doing this every so often for the last six months. The second is
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<BR>
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to reverse engineer the command language. I don't really know how to
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<BR>
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do this. I guess you would have to tap into the line (either USB or
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<BR>
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parallel cable) and sniff out what commands are sent under what
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<BR>
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situations. I think this would be very usefull (to me at least) but
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<BR>
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very difficult. Someone much smarter than me can comment on this.
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<BR>
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<PRE>
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--
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Doug Alcorn | Fire Todd Dickinson, reform the US Patent Office
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<A HREF="mailto:doug@lathi.net?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<x7gr9a9shma.fsf@lathi.net>">doug@lathi.net</A> | <A HREF="http://www.andovernews.com/cgi-bin/news_column.pl?533">http://www.andovernews.com/cgi-bin/news_column.pl?533</A>
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www.lathi.net |
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<P>--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<x7gr9a9shma.fsf@lathi.net>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0057.html">Dave Hill: "Re: Latest sane CVS, Epson GT7000 and xsane"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0055.html">Michael Franz: "Parallel Scanners (UMAX Astra 1220P)"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Wed Jun 07 2000 - 07:20:24 PDT</EM>
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