Cycle-up control scheme

Details Cycle-up control scheme Cycle-up control scheme

1988-01-11

1989-01-03

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3CH, G03G 1502

Patent

active

047960647

ABSTRACT:
A control device for adjusting the surface potential of an image bearing member of a machine during the initial cycles of a job run wherein the image bearing member manifests varying characteristics after completion of a job run. The control device includes a charging member to produce a surface potential on the image bearing member, a sensor to measure the surface potential on the image bearing member and logic circuitry responsive to the charging member and the sensor after a first cycle of the machine operation to control the charging member current during a second cycle of the machine operation in which the logic circuitry includes means to predict changed characteristics of the image bearing member after the completion of the first job run at the initiation of a second job run and the means to determine relationship between the charging current of the charging member and the measured surface potential of the image bearing member.

REFERENCES:
patent: 4326796 (1982-04-01), Champion
patent: 4348099 (1982-09-01), Fantozzi
patent: 4355885 (1982-10-01), Nagashima
patent: 4456370 (1984-06-01), Hayes
patent: 4484811 (1984-11-01), Nakahata et al.
patent: 4512652 (1985-04-01), Buck et al.
patent: 4564287 (1986-01-01), Suzuki et al.
patent: 4592646 (1986-06-01), Suzuki et al.

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