Marks on halftone prints - issue when gradating on c224e

[HarryBurgess]

Got a c224e thats printing fine, but has an issue when gradating

These halftone images attached are set to a density of 50, any suggestions/ideas are appreciated.

I just find it strange that on the magenta its white, but on the others the marks are black. Does this indicate its something to do with the magenta?

55621

[CP-1015]

First: it seems there is a scratch in the transfer belt (seen on cyan pattern).

[techsxge]

Got a c224e thats printing fine, but has an issue when gradating

These halftone images attached are set to a density of 50, any suggestions/ideas are appreciated.

I just find it strange that on the magenta its white, but on the others the marks are black. Does this indicate its something to do with the magenta?

55621
Jesus, yellow is like non existend :o

Check and lower fusing temperature . See if that helps. Maybe switch the color drum units with each other and see if the marks change. Also replace black drum unit if they keep on showing up the same.

[techsxge]

First: it seems there is a scratch in the transfer belt (seen on cyan pattern).
could be transfer belt, but after 4x gradiation pattern it should have appaered again.