ir 6570 print quality

[xcopytech]

When print on A3 paper machine produce print quality as in attachemnt.
Only on A3 paper, never on A4.
Almost always on same place and almost always look same.

[davidj7]

did you do a hard stop and check if the issue is before fuser

[teckat]

When print on A3 paper machine produce print quality as in attachemnt.
Only on A3 paper, never on A4.
Almost always on same place and almost always look same.

have u tried a different ream of A3 Paper ?

looks like a sky shot/ so when printing u have a blank area on A3 only prints

[xcopytech]

yes, tried hard stop and image defect is present before fuser.

yes tried with fresh rim of paper but still same.

[davidj7]

i presume you have checked all the bacics like carona etc


does the issue happen in multiple a3 prints or in just single a3's?

[xcopytech]

yes, i checked corona.

defect is visible on every print, single and multiple

[Canuck]

A3 is large paper i believe....you said you crashed it before fuser....was paper in fuser at all? Since these machines are famous for the pressure roll bearings self destructing, it could be that this is causing the paper to get a hump toward the trail edge....kind of like a wrinkle that isnt ironed out. This could be affecting transfer in that area. If the pressure roll has more than 350k on the bearings and roll,replace them...its a start

[SCREWTAPE]

Which corona ass'y was checked, there are three ass'y.
Is this printing or copying off the glass?

[Canuck]

Rewire the coronas...then go from there.....dont know how you "check" a corona wire.... a bent transfer guide will cause deletions also

[xcopytech]

Check all three corona assy, use it from good working machine.

Will check fuser assy as Canuck said.

Thanks

[SCREWTAPE]

I think its more of a image formation process issue.
Yea the fuser section can cause problems fusing and creasing when bushings break causing uneven fusing ,but that image fault doesn't look fuser related to me.
That's my two cents on the matter.

[davidj7]

yes, tried hard stop and image defect is present before fuser.

.

the issue is present before fuser .


Does it happen in both print and copy. and in the test pages send from the printer service mode.

[SCREWTAPE]

Does it happen in both print and copy. and in the test pages send from the printer service mode.

I asked the same ?
No answer!

[xcopytech]

yes, same for print, copy and for print from service mode.

[davidj7]

if carona's are not causing this issue i am stumped.