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<title>sane-devel: Epson GT-7000 transparencies kit</title>
<h1>Epson GT-7000 transparencies kit</h1>
<a href="mailto:r_valetti@iol.it"><i>r_valetti@iol.it</i></a><br>
<i>Mon, 26 Apr 99 13:30:09 +0000</i>
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Hi,<br>
I have found a problem using my flatbed scanner, an Epson GT-7000, when I try to use<br>
the kit to read transparencies.<br>
The kit itself is made of a cover replacement that back-lights the slides; it reduces<br>
the scanning area to approximatively 10 x 12 cm (4" x 5"). When you turn it on, the<br>
scanner recognizes its presence and automatically moves the scanning head to the<br>
beginning of the new scanning area.<br>
I've run various tests of the scanner using xscanimage (both from Gimp and from<br>
command line) and everything works fine, both the basic functions (scanning modes) and<br>
the advanced features (the geometry parameters and the brightness) if I don't use the<br>
transparencies reader.<br>
When I try to do a scan using the transparencies reader, both from scanimage and from<br>
xscanimage, I get an error message saying "invalid argument".<br>
I've tried to use the debug options in scanimage (exporting SANE_DEBUG_SCSI=128 and<br>
SANE_DEBUG_EPSON=128) and, after a list of initialization messages, I receive the<br>
following message:<br>
sane_start: set_area failed: invalid argument<br>
Given what I've written above about how the scanner and the reader work (the head<br>
moves to a new default position if you use the reader), my idea is that sane is trying<br>
to position the head to some coordinates that the scanner doesn't recognize as valid,<br>
but this is only a guess and I may be wrong.<br>
Is there something I can try to solve this problem? This same problem was also<br>
encountered by another subscriber to this mailing list who wrote me a week ago<br>
describing it in the same way for the same scanner (by the way, I wanted to write him<br>
before sending this message, but a disk crash prevented me to access my e-mail<br>
addressbook, so I hope he's reading this message, I'll write him asap).<br>
Thak you for your work<br>
Ruggero Valetti<br>
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