Skew scanning/copying Canon IR ADV C5560i III

[bret@cos.flag.org]

Hi guys,

First time poster here.

I have a Canon IR ADV C5560i III that we recently got and I'm the on-site technician. I can't get another tech in for a while so I have to fix issues with this machine myself.

I have scans and copies from the ADF that are a bit skewed, per measurements I have about a 1mm difference between the left and right sides of the page of text.

Meaning on the left side of the letter size portrait page, the text starts 7mm from the top of page on the left, and 8mm from the top of the page on the right. I hope that's clear enough of a description.

The main use case is scanning letter sized documents, long edge first in the ADF. That is where the issue is most noticed. The other use case is scanning to PDF letter size (and some legal size) documents to PDF and the skew is also noticed on the scans.

This is a big deal for the users of this machine. It needs to be straight.

I've checked out service mode and didn't find anything obvious there about skew or deskew.

I'm thinking it is a physical problem, but I don't know what part to check/tighten/loosen, etc.

This problem is visible in copies and scans from the ADF, not the glass. This problem is not visible in printing, unless of course I am printing a previously scanned document from this copy machine.

Any advice on where to start or what manual to check out would be greatly appreciated.

Thanks!

Bret

[bret@cos.flag.org]

Re: Skew scanning/copying Canon IR ADV C5560i III

As an update to this - it seems like this just now got added to the forum, maybe was waiting for moderation.

I loosened the screws holding the ADF in place and then adjusted the screw underneath the right hinge of the ADF. I rotated the screw counterclockwise. That moved the ADF so that the scanned images are straighter now.

The customer is satisfied, I'm not. I can still see it is skewed a bit in the other direction now. I think i moved it too far. Next time I go back there I'll adjust a bit back the other way. But at least I know how to adjust this now.

The key on this one was finding the right section of the service manual that covers this for this model - RTFM, right?

Hope this helps someone someday.

Bret

[tsbservice]

Re: Skew scanning/copying Canon IR ADV C5560i III

Bret good job and Welcome to the forum. You already learned one of the most important things
...RTFM!
Again congrats on giving us feedback.

[bret@cos.flag.org]

Re: Skew scanning/copying Canon IR ADV C5560i III

Hi again guys,

This problem is back again - and seems to be that the changes I did last time undid themselves,because the problem, as described to me and some photos I got (which I can't share due to what is on the documents) show the following:

Letter size scan and copy, scanned long-edge first from the ADF - the bottom right of the letter size page is closer to the edge than the top right ("pushed out"). This is the bottom right side of the letter size page, portrait when you look at it. That's the trailing edge. However, the top edge (short edge) is perfectly straight. It seems there is some sort of distortion going on, not just a straight up skew of the ADF.

It seems that if I rotate the ADF, like I described in my previous post, I'm going to throw the top edge out of whack.

Does anyone know what might cause the ADF on a copier to make an image get pushed out on one side of the trailing edge? (by about 1mm or 1.5mm)

Could it be the height of the ADF? I've not ventured in to that area at all but I know there are adjustment screws for that, which I've actually never messed with. I don't know if that's relevant to this issue.

The customer's old copier (IR ADV C5051) scan/copy from the ADF was PERFECTLY STRAIGHT. I measured, they were dead on. I should be able to get this one dead on straight too.

If anyone has dealt with something like this, please let me know. Thanks.

[Tricky]

Re: Skew scanning/copying Canon IR ADV C5560i III

I would adjust the height also make sure the slit glass is clean.

[bret@cos.flag.org]

Re: Skew scanning/copying Canon IR ADV C5560i III

I would adjust the height also make sure the slit glass is clean.

Any idea which way to adjust the height of the glass? or is it just trial and error and see what works or what makes it worse?

[Phil B.]

Re: Skew scanning/copying Canon IR ADV C5560i III

Any idea which way to adjust the height of the glass? or is it just trial and error and see what works or what makes it worse?

sounds like the users are forcing the ADF.. either by copying a book while standing on the ADF or someone is leaning on it causing the skew