kopia lustrzana https://gitlab.com/sane-project/website
109 wiersze
4.9 KiB
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109 wiersze
4.9 KiB
HTML
<!-- received="Sun Nov 15 11:42:55 1998 PST" -->
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<!-- sent="Fri, 13 Nov 1998 19:14:18 -0500 (EST)" -->
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<!-- name="Bill C. Riemers" -->
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<!-- email="bcr@sanskrit.lz.att.com" -->
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<!-- subject="HP C6270 works with scan-hp" -->
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<!-- id="199811140014.TAA15047@sanskrit.lz.att.com" -->
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<!-- inreplyto="" -->
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<title>sane-devel: HP C6270 works with scan-hp</title>
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<h1>HP C6270 works with scan-hp</h1>
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<b>Bill C. Riemers</b> (<a href="mailto:bcr@sanskrit.lz.att.com"><i>bcr@sanskrit.lz.att.com</i></a>)<br>
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<i>Fri, 13 Nov 1998 19:14:18 -0500 (EST)</i>
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<p>
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<ul>
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<li> <b>Next message:</b> <a href="0122.html">James Carter: "Re: gimp plugin finding no scanner"</a>
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<li> <b>Next message:</b> <a href="0122.html">Steve Logue: "HELP! - Umax 1220S and pre1.0 don't work"</a>
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<li> <b>Previous message:</b> <a href="0120.html">Georg Huettenegger: "problem with mustek paragon 600 II cd (fwd)"</a>
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</ul>
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Hi,<br>
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<p>
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My HP C6270A works with scan-hp driver.<br>
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However, there are a couple of problems I noticed:<br>
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<p>
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1. The first time I ran the "xscanimage" it took five minutes<br>
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each time I scanned a page. I decided that the software<br>
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was junk, since the scanner is suppose to scan a page in<br>
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15 seconds. However, when I went to show someone how badly<br>
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it worked, it scanned in the 15 seconds.<br>
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<p>
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Later I figured out why: My home directory is NFS mounted,<br>
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and unlike the Windows version which scans and then saves,<br>
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xscanimage waits for the data to be written. Solution:<br>
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Documenting this "feature" should be sufficient.<br>
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<p>
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2. The quality I get is random. The first time I used it<br>
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I was getting all sorts of gray "dirt" like I had smired<br>
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ink on the page. The next time (after a reboot) I kept<br>
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getting rainbows across the page, or dark bands in grey<br>
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mode. After a third reboot, I began getting nearly perfect<br>
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scans.<br>
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<p>
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Solution: If this is a bug in the software, then the<br>
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best solution is to fix it. If this is a problem with<br>
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the scanner, then there needs to be a way to reset the<br>
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scanner other than rebooting my machine. (My Linux box<br>
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acts as a server, so I can't reboot regularly...) I <br>
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tried things like "rmmod gs.o" but that doesn't reset<br>
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the scanner... I also tried just unplugging the scanner,<br>
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but then I can't access the scanner at all until I reboot.<br>
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<p>
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3. If there is paper in the auto document feeder when I start<br>
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the "xscanimage" program for the first time, it decides my<br>
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pages have zero lines. (This makes for very fast scans of<br>
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zero size files...)<br>
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<p>
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4. Is there a way to specify an output program? e.g.<br>
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<p>
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<i> |cjpeg -q 100 > foo.jpg</i><br>
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<p>
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as the output program? Since the scanning seems to be<br>
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slowed by IO time, this might be even faster than just<br>
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writing a huge PNM file. <br>
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<p>
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Or perhaps I might want to try something like scanning<br>
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at 1200 DPI and using<br>
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<i> |pnmscale 0.25 > foo.pnm</i><br>
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to see I it improves the quality.<br>
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<p>
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5. Is there a way to tell the program to scan all the pages<br>
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in the document feeder?<br>
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<p>
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Currently I'm involved in a project designing a "scanning house" for<br>
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making a catalogs.att.com website that will hosts catalogs for very<br>
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low rates. This means they'll need to be able to scan approximately<br>
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1.5 million pages per year. Clearly the 6270 isn't going to be up<br>
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to this task, considering I'd dread just scanning in a few catalogs<br>
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for test purposes. However, it is the scanner I'm using to develop<br>
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the post-scanning filter software, and if we are lucky, the "sane"<br>
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drivers will be used under Linux, instead of some Windows NT program<br>
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we have no control over. To do this, I'll probably have to code<br>
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things to use the sane.so files directly. Is there any documentation<br>
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for the API interface, or will I just have to study the source<br>
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code?<br>
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<p>
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Thanks,<br>
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<p>
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Bill<br>
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<p>
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<p>
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<pre>
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--
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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">majordomo@mostang.com</a>
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0122.html">James Carter: "Re: gimp plugin finding no scanner"</a>
|
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<li> <b>Next message:</b> <a href="0122.html">Steve Logue: "HELP! - Umax 1220S and pre1.0 don't work"</a>
|
|
<li> <b>Previous message:</b> <a href="0120.html">Georg Huettenegger: "problem with mustek paragon 600 II cd (fwd)"</a>
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<!-- nextthread="start" -->
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</ul>
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