Kodak TWAIN driver issue (all versions all scanners all OS)

[Thierry]

Hi there,

I’m facing a new issue (in fact an old one), with Kodak drivers, seen on an i260, i780, i1860 and probably a couple of other models.
When I use my code to transfer images from the scanner, some images are scrambled, the image itself, not the header structure or image format.
It happens when scanning in memory mode, no compression, transport set to ‘Automatic’ or ‘Agressive’, when the transport is set to ‘Fixed’ there is no problem
The resulting image is like misaligned, but in fact it is more than that, I cannot rebuild the image just by shifting the lines.
When using Group 4 compression I can have also scrambled images, the TIFF header looks fine, but the image stream is corrupted.
It is easier anyway to reproduce it with no compression set, 1 bit/pixel, letter size sheet.

It is easy to reproduce for us, and we can use also kdstst.exe, as well as Twack_32 from the TWAIN Group. But it looks like SVT, ScandAll or some other softwares (I tested them quickly) are not affected.

Any idea ?

[Thierry]

I’ve finally get the answer from Kodak, and the image line (uncompressed mode) has to be padded to 32bits boundary before saving the data to a file (you should check the buffer size, if it is less than the expected size with 32bits alignement). And it works 😀
A big thanks to the guys at Rochester.

[HOHXP]

Where in Kodak did you get help ? Person/e-mail adress ?
Does anyone know how to get support on their drivers, I experience lockups problems when paperjams occurs as others have also. 🙂

[Thierry]

@HOHXP wrote:

Where in Kodak did you get help ? Person/e-mail adress ?
Does anyone know how to get support on their drivers, I experience lockups problems when paperjams occurs as others have also. 🙂

I had support when I came to their offices in Rochester, they explained me how the images are sent by the driver in ‘no compression’ memory transfer, it was straightforward after that … 😉
I don’t know if I can mention names or emails here, but basically, most of time, someone from Kodak will see your question if post one, and will help you directly.

[Benedictum]

can you post the code on how you did this?

[HOHXP]

Anyone have a support e-mail for developers to Kodak ? 😀

[Author]

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