<div>Thanks a lot for your request pardon my English, i'm French...</div><div>Whan you say <font class="Apple-style-span" color="#999999">"or a very stupid flatbed which relies upon the driver to detect the end of the bed." </font>did you have a idea to find the good product ? Because the ADF machine are too less shinny to do what i want..</div>
<div><br></div><div>Thanks a lot again</div><div><br></div><div>Bonne journée </div><div><br></div><div>Karim</div><div><br><div><br><div class="gmail_quote">2010/7/10 m. allan noah <span dir="ltr"><<a href="mailto:kitno455@gmail.com" target="_blank">kitno455@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Modifying the hardware is the easy part.<br>
<br>
The problem here is that many scanner chipsets don't understand the<br>
idea of longer length scanning. They have one or more internal<br>
registers that hold the length of the scanned area and/or the length<br>
of the scanner bed, so that the motor can slow and stop before<br>
striking the end of the bed. Most machines don't give the programmer<br>
access to those registers.<br>
<br>
I think what you need is either an ADF machine with long-scanning<br>
support (which you have to convert into a flatbed), or a very stupid<br>
flatbed which relies upon the driver to detect the end of the bed.<br>
<br>
The cardscan 800c is a combination of those two ideas, a very dumb ADF<br>
machine. But, it is very narrow.<br>
<br>
allan<br>
<div><div></div><div><br>
On Sat, Jul 10, 2010 at 2:36 PM, Mark Van den Borre<br>
<<a href="mailto:mark%2Bsane@markvdb.be" target="_blank">mark+sane@markvdb.be</a>> wrote:<br>
> Karim,<br>
><br>
> I am not a sane developer, but I wonder if you have considered<br>
> sheetfed scanners like the Xerox Travel Scanner 100? One can make<br>
> these scan never ending lengths of paper.<br>
><br>
> Mark<br>
> sane user<br>
><br>
> 2010/7/10 karim moreau <<a href="mailto:karimmoreau@gmail.com" target="_blank">karimmoreau@gmail.com</a>>:<br>
>> Hello.<br>
>> I'm currently working on an artistic project and am looking for someone with<br>
>> technical knowledge (developer, engineer,…) to help me with advice and / or<br>
>> assistance.<br>
>><br>
>> Basically, what I am trying to do is to modify a desktop scanner so as to<br>
>> significantly increase the size of the scanning surface.<br>
>><br>
>> See figure here : <a href="http://www.upian.net/schema.jpg" target="_blank">http://www.upian.net/schema.jpg</a><br>
>><br>
>> What I want to do is, starting with a basic A4 or A3 scanner, to cut it and<br>
>> increase substantially the scanning surface "B" of the scanner.<br>
>><br>
>> For instance, an A4 scanner uses a 21cm wide sensor that can scan a 29,7cm<br>
>> long surface, from point "p1" to point "p2"<br>
>><br>
>> The idea is to cut the scanner and to increase its length in order to allow<br>
>> him to scan a significantly longer surface, up to a point "p3" that could be<br>
>> 2m from point "p1".<br>
>><br>
>> The material aspect of that project isn't going to be a problem for me. But<br>
>> what I need help for is the software part of the problem : for the driver of<br>
>> the scanner has to be partially rewritten or modified so as to allow the<br>
>> tracks of the scan to run all the way through (point "p3") but also to<br>
>> produce an image that has the new proportions of the scanner.<br>
>><br>
>> Depending on what you are advising, I'm also ready to invest in a specific<br>
>> model, if you think the driver of that specific scanner is going to be<br>
>> easier to reprogram / modify.<br>
>><br>
>> Thank you very much for any input, advice or help : I'd really like to be<br>
>> able to pull this through, so please do not hesitate to share any thoughts<br>
>> you have on this, wether you think this is doable or not.<br>
>><br>
>> --<br>
>> Karim Moreau<br>
>> 76 rue de la jonquiere<br>
>> 75017 paris<br>
>> 06 22 18 91 55<br>
>> <a href="mailto:karimmoreau@gmail.com" target="_blank">karimmoreau@gmail.com</a><br>
>><br>
>> --<br>
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>><br>
><br>
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<br>
<br>
<br>
</div></div><font color="#888888">--<br>
"The truth is an offense, but not a sin"<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>Karim Moreau<br>76 rue de la jonquiere<br>75017 paris<br>06 22 18 91 55<br><a href="mailto:karimmoreau@gmail.com" target="_blank">karimmoreau@gmail.com</a><br>
</div></div>