Question about Panasonic KV-S2026C Pass-Through Scanner

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Problems when scanning

We have a scanning application and at one installation we are seeing several problems with scanning. We have 5 scanners running at this installation, and are seeing various problems on different scanners. We have not userd the 2026C before, but have used the 2025c. We are not sure if these problems indicate a problem with the scanner or a user problem.

There are three problems.
1. The scanner often takes up to 8 secs before it starts scanning if it has not been in use for a few minutes

2. There are tracks and lines appearing on some of the forms that get scanned. These marks appear as straight lines runing vertically down the page. They appear in the same place on forms from two different scanners.

3. Some of the scanners appear to consistently pull the forms through askew, without any indication in the paper flow. It's as if the scanning bar inside (if there is such an animal) is askew.

I am aware that site is using NCR forms which I have previously been told is a MAJOR NO NO for scanners. I am thinking this could be part of the problem.

The application that is driving the scanner is a VB app using scanning drivers put out by UniSoft Imaging.

What are your opinions, suggestions etc.

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Re: problems when scanning

Good evening ksys,
Let me address these and see if I can be of some help.

1.Many scanners will go into a sleep mode, in an effort to conserve power. I don't know for sure but this maybe an option that can be reset somewhere in the control panel menu. Refer to your user guide in the sections that talk about energy, sleep mode or conservation.

2. The tracks that you see on the printed forms sound like a problem in the photo conductor area. Toner beads (or lint, paper shreds, etc.) will clump up and cause this to happen. If you can get to the photo conductor, a gentle cleaning (usually in the area where the photo conductor is pulled back down into the toner bin) may resolve your problem. In some cases, you may actually see a band or streak of toner on the photo conductor. These can sometime be removed, but if the photo conductor is scratched in that area, the problem will come right back. Any cleaning in this area needs to be done with a very soft, clean, dry cloth. You have to be careful not to scratch the photo conductor, or you will just add to the problem.

3. Yes the skewing problem can definitely be caused by the forms. And NCR paper has always seemed to present problems in printers and scanners. Some machines can be adjusted (usually out of specs) for correction of this problem, but many cannot. Something else that you may look for is any type of buildup on the feed rolls that move the paper into, and through, the machine. Any deposits found on the rollers can usually be cleaned off with 90% rubbing alcohol and a cotton swab. If the deposits are dark in color, they could be part of the cause of the verticle streaks that you mentioned. I would have to actually look at the machine(s) in question to determine whether or not this could be done.

Hopefully, this information will be of help and what you were looking for.

f you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question and/or lead to a resolution, please rate it as "Fixya!".
Thank you, and have a super day!

Posted on Nov 26, 2007

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