Canon iR4570 Series Service Manual page 668

Chapter 12
C. Cleaning the Film Bias Static Eliminator
1) Remove the 2 screws [1], and detach the grounding plate [2].
2) Clean the film bias static eliminator [1] found behind the grounding plate (to remove the cake of toner, if any, that
may have collected on the static eliminator).
3) Mount the grounding plate [2] with 2 screws.
12-24
F-12-37
F-12-38
[1]
F-12-39