Home › Forums › TWAIN Classic › TWAIN and Epson V700 – how to make it scan the entire width
- This topic has 3 replies, 2 voices, and was last updated 11 years, 3 months ago by spike.
- AuthorPosts
Hi,
I asked a question over on Stack Overflow here: http://stackoverflow.com/q/13357297/1039947 and then I came across this website so I am hoping that someone here may be able to help me, here is the problem…
I am setting the layout in order to scan just a small part of a page and I am using an Epson Perfection V700 scanner (this code works fine on various other scanners). What it does is it cuts off the left and right edges of the scanning area – it seems that it is only allowing me to scan 6 inches in the middle. If I use the tool that comes with it I can scan the entire area with the light on but not using TWAIN.
If I turn the light off, the layout works fine.
Is there any TWAIN setting I can use to force the scanner to scan the entire page width and have the light on?
when you say “with the light on”… what do you mean exactly?
I mean with the backlight turned on (LightPath set to 1 – i.e. transmissive, see: http://www.data-tech.com/help/imnettwain/Twain%20Capabilities.html).
Ah. You’re scanning in transparency mode.
Maybe Epson is assuming that there is no point scanning outside the edges of their transparency adapter(s)?I would look at maybe IMAGELAYOUT, what is its value after you set LightPath=1.
That’s the most common way in TWAIN, to represent a constrained scan area – a ‘region of interest’.But it sounds like you might be already setting that. Hmm.
Have you looked at the values of ICAP_XSCALE and ICAP_YSCALE? Are they maybe not equal to 1?- AuthorPosts