BIZHUB 750 bad image quality on the back side of the duplex copies.

[cristian]

When a make copies on duplex (face and back) I have a bad images on the back side of all copies.The face is acceptable.The problem became more visible when i make A4R copies , the quality is even more bad...Also appear on printing from computer....and before the entrance in the fuser...
Some ideeas ?

[SmellsHot]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

Replace Developer.....

[JustManuals]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


Paul@justmanuals.com

[cristian]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

have 6000 copies with the developper and the drum...

[Darren King]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

Run about 30 skyshots and then run the drum peculiarity starting with cartridge set and then in order that is on the screen. That is how I get these pigs to stop over toning. It usually last from 25,000 to 75,000 pages before I have to do it again. I know it ain't real scientific, but it seems to work.
Hope this helps.
Darren

[cristian]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

[QUOTE=Darren King
my problem is exact the opposite one.The front copy is acceptable as density, but the verso goes to near a white copy

[Darren King]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

[QUOTE=cristian;360628][QUOTE=Darren King
my problem is exact the opposite one.The front copy is acceptable as density, but the verso goes to near a white copy[/QUOTE]

Sorry, you didn't mention that the image faded. I assumed that it was over toning because that's what these machines do.

[SmellsHot]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

What if you do a 2-2 with only an image on the 2nd page? I'd make sure your tcsb sensors are clean as well as your charge and T&S wires. Then I'd run cart set, run back through the auto adjustments(and make sure that all are "ok"). Then run 50 dbl sided sets of the #12 test pattern........
If you still have problem, please upload photo

[cristian]

original.jpgface 1.jpgback side.jpg

[cristian]

Re: BIZHUB 750 bad image quality on the back side of the duplex copies.

Have found the problem....The guy has change the positions of the 5 screws from the transfer guide plate.Does anybody knows if is there any standard position for those screws?