Ricoh B082 Service Manual page 343

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COPY PROCESS OVERVIEW

Image transfer

Paper is fed into the area between the drum surface and the transfer belt [E] at the

proper time to align it with the image on the drum. The transfer bias roller applies a

high positive charge to the reverse side of the paper through the transfer belt. This

positive charge pulls the toner particles from the drum surface and onto the paper

while the paper is electrostatically attracted to the transfer belt.

Paper separates from the drum as a result of the electrical attraction between the

paper and the transfer belt. Pick-off pawls [F] help separate the paper from the

The ID sensor [G] measures the reflectivity of the pattern formed by the laser on

the surface of the drum. This output signal is used for toner supply control and also

measures the drum surface reflectivity, which is used for charge roller voltage

The drum cleaning blades [H] and [J] removes any toner remaining on the drum

surface after the image is transferred to the paper.

Finally, the light from the quenching lamp [I] electrically neutralizes the charge on

the drum surface.

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