Ricoh G-P3 Service Manual page 350

4. Image transfer:
The charge that is applied to the transfer roller pulls the toner from the drum to the transfer belt. Four
toner images are put on the paper.
5. Cleaning for OPC drum:
The cleaning brush and blade remove remaining toner on the drum surface after image transfer to
the paper.
6. Quenching for OPC drum:
Quenching is done at the end of each page with a quenching lamp (LED array) in the PCU.
7. Paper registration:
The registration roller controls the paper feed timing to make sure that the image transfers to the correct
location on the paper. It also removes skew.
8. Paper Transfer and Separation:
Toner transfers from the transfer belt to the paper when the paper is fed between the transfer belt and
transfer roller. At this time, the paper also separates from the transfer belt, because of a discharge
plate immediately after the transfer roller.
9. ID sensor:
The ID sensor board contains three ID sensors (one at the left, one at the center, and one at the right).
The ID sensor detects the density of the ID sensor pattern on the transfer belt. The ID sensor output is
used for process control and for automatic line-position adjustment, skew, and color registration
adjustments for the latent image.
Overview
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