Ricoh FT5233 Service Manual page 13

12 February 1992 COPY PROCESS AROUND THE DRUM
6. IMAGE TRANSFER
Paper is fed to the drum surface at the proper timing so as to align the copy
paper and the developed image on the drum surface. Then, a strong
negative charge is applied to the reverse side of the copy paper, producing
an electrical force which pulls the toner particles from the drum surface onto
the copy paper. At the same time, the copy paper is electrically attracted to
the drum surface.
7. PAPER SEPARATION
A strong ac corona discharge is applied to the reverse side of the copy
paper, reducing the negative charge on the copy paper and breaking the
electrical attraction between the paper and the drum. Then, the stiffness and
the weight of the copy paper causes it to separate from the drum surface.
The pick-off pawls help to separate paper and drum.
8. CLEANING
The cleaning brush removes toner remaining on the drum after image
transfer and the cleaning blade scrapes off all the remaining toner.
9. QUENCHING
Light from the quenching lamp electrically neutralizes the charge potential of
the drum surface.
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