Ir adv c55## adf scan copy skew

[jmaister]

Hello gents. Maybe I am missing the proper keyword when searching.

I cant seem to find the why and how the image is skewing on 11x17 For all the recent one pass adfs...

It could be called slant, trapezoid, shift... I cant seem to find any detail on it, even in model specific FAQ.

I did all the adjustment,learnt how to centre the copied image, but nothing else was available.


Anyone has experience on this? I tried tracing back to the c52##, got nothing as well.


The lead edge rear corner is always further out than the trail edge corner.

[jmaister]

Re: Ir adv c55## adf scan copy skew

shameless bump...sry

skew.jpg

So this is what it looks like(dont have sample with me). I have done the hinge adjustment to no avail, even the ADF height screws... any thoughts?

[wcanonw]

Re: Ir adv c55## adf scan copy skew

shameless bump...sry

[ATTACH=CONFIG]44501[/ATTACH]

So this is what it looks like(dont have sample with me). I have done the hinge adjustment to no avail, even the ADF height screws... any thoughts?

Check if the paper size guide is well positioned or analyze the paper path. There should be some foreign object or defective guide in the adf and copy glass, which causes the sheet to move a little.
the other would be to discard with another ADF

[jmaister]

Re: Ir adv c55## adf scan copy skew

Check if the paper size guide is well positioned or analyze the paper path. There should be some foreign object or defective guide in the adf and copy glass, which causes the sheet to move a little.
the other would be to discard with another ADF

I forgot to mention that, theres atleast three(x3) of the same model that's doing this. Two are at the same client.

The usual 8.5x11 don't show. Only the long paper shows, and these guys are architects...


And the pulley, paper guide all seem normal, glass is clean. these are series III machines and are quite new.

[wcanonw]

Re: Ir adv c55## adf scan copy skew

I forgot to mention that, theres atleast three(x3) of the same model that's doing this. Two are at the same client.

The usual 8.5x11 don't show. Only the long paper shows, and these guys are architects...


And the pulley, paper guide all seem normal, these are series III machines and are quite new.

In copying and duplex scanning does the same problem occur?

[jmaister]

Re: Ir adv c55## adf scan copy skew

In copying and duplex scanning does the same problem occur?

Copy scan same problem. Not even going to second side when the first side is wrong. Only noticable on 11x17. It seems like the paper is drifting or being pushed due poorly design pulleys to counter act torque applied on one side.



All itb has a centering mechanism. But for high speed adf's the paper is the belt. Where is the centering mechanics?

Case and example, Konica adf.

[wcanonw]

Re: Ir adv c55## adf scan copy skew

Your problem in this case is due to poor paper feed (paper wheel or rollers), check and clean the state of each, also check the paper transport rollers, because most new models of copiers their DADF They are no longer manufactured with a conveyor belt, so you should check the wheels, rollers and mechanism.


Normally in the DADF, the margins and registration position, position (side by side) or front and rear) can be adjusted by service mode.


I would recommend that you have an original with lines on all four sides of the sheet, make a forced jam in the dadf of the same original and evaluate if the paper moves from position.

[jmaister]

Re: Ir adv c55## adf scan copy skew

Your problem in this case is due to poor paper feed (paper wheel or rollers), check and clean the state of each, also check the paper transport rollers, because most new models of copiers their DADF They are no longer manufactured with a conveyor belt, so you should check the wheels, rollers and mechanism.


Normally in the DADF, the margins and registration position, position (side by side) or front and rear) can be adjusted by service mode.


I would recommend that you have an original with lines on all four sides of the sheet, make a forced jam in the dadf of the same original and evaluate if the paper moves from position.

Nope not those. Yes check for movement is a great idea I will right on it...

But, even when it moves what do I do... Mylar? Shim? It's going to be a design problem from Canon...


(I was hoping a couple of gurus will chime in, i am only two years with Canon, but this is essentially the same problem with Konica adf, and no I am not about to change the hinge on these heavy suckers...)

[Phil B.]

Re: Ir adv c55## adf scan copy skew

have you tried internal PRINTS on 11x17?

[jmaister]

Re: Ir adv c55## adf scan copy skew

have you tried internal PRINTS on 11x17?

Oh the print is perfect.



Edit: further testing from senior tech finds reader assembly isnt tracking straight.

Please check all your new machines. This maybe a manufacturing thing