C220 copy quality issue , print is fine

[habik]

Re: C220 copy quality issue , print is fine

I would do this:


Pull the transfer belt out and give the front and rear IDC sensor a wipe with microfiber cloth and also the same for optics..just pure ISO propyl alcohol wipe with microfibre cloth and then polish it after with a dry one.

Then in service mode, Image Process Adjustments > Stabiliser > Initialize and Image Stabilization
then
Gradation Adjust > Stabilizer > Copy Mode and Print Mode. For the best results make sure you get to the bear minimum a.e as close to zero on both Dark and Highlights Conversion Values.

Also I would check colour registration adjust.

As much as all above look as standard I do them each and every time I have a complain about copy or print quality. Never the less, do you have the PPLM firmware installed to prolong the life of IU's ? If you do, maybe it is time to change the drums!

Be the best and Best of Luck,

Habik

[davidj7]

Re: C220 copy quality issue , print is fine

Hi
I traced the problem to magenta Developer assy. Looks like there wasn't enough developer.

Thanks for all your help guys .
David

[AjitN]

Re: C220 copy quality issue , print is fine

HI
I think gradation pattern for copy is very much OK. It always prints like that compare to gradation for Print Mode.
If you test 100 machines, all machines will give you similar output for gradation copy mode.
I think software is designed that way to judge the image loss in copy mode. Actually gradation test page for copy is not a copy but file print only stored in firmware.
I think you should not worry much as long as copy quality is ok.
Hope this helps.