Vertical White streaks--From Fuser???

[thadwald]

I have a Canon IRC7055 that has recently started leaving a white streak down the page. PG 5 prints with individual colors indicated that it happens with all colors. I printed a pg 5 with black 255 and interrupted the print. The defect is not visible immediately before the fuser.

Any thoughts?

pg 5 K 255
Black 255.jpg

pg 5 CYMK 128
All colors 128.jpg

pg 5 K 255, partially fused
Black 255, Unfused.jpg

[blackcat4866]

Yes, looks like fuser to me. =^..^=

[thadwald]

What confuses me though is that there’s no visible accumulation of toner in the fuser area and no visible blemish on the fuser belts themselves.

Short of replacing the fuser, is there anything else I can test to confirm that the fuser is causing this?

[Phil B.]

What confuses me though is that there’s no visible accumulation of toner in the fuser area and no visible blemish on the fuser belts themselves.

Short of replacing the fuser, is there anything else I can test to confirm that the fuser is causing this?

Replace w/ known good used fuser,?

Sent from my SM-G960U using Tapatalk

[thadwald]

Replace w/ known good used fuser,?

I am now pretty sure the fuser is the issue.

It appears that the metal film inside the pressure belt has split in two at the white streak. This probably causes leaky induction heater eddy current shenanigans.

Unfortunately all my used fixing assemblies have a bad pressure belt ...

I'll post back once I get the new parts in.

Thanks.