Method for controlling prefatiguing illumination of a photosensi

Details Method for controlling prefatiguing illumination of a photosensi Method for controlling prefatiguing illumination of a photosensi

1981-07-16

1983-04-19

Moses, Richard L.

Photocopying

Including fiber optics

355 15, 355 67, 355 77, G03G 2100

Patent

active

043803865

ABSTRACT:
Actuation of a prefatiguing lamp is selectively controlled in accordance with the measured time interval between successive copying operations. In substantially continuous copying where the measured interval is less than a first predetermined time period, no prefatiguing illumination is provided. Where the measured interval exceeds a second, longer predetermined time period, full illumination is provided. When the measured interval is between the first and second predetermined periods, partial illumination is provided by appropriate reduction in the operating voltage impressed upon the prefatiguing lamp.

REFERENCES:
patent: 3558307 (1971-01-01), Carlson
patent: 4110026 (1978-08-01), Farley
patent: 4162845 (1979-07-01), Smith et al.
patent: 4290690 (1981-09-01), Noda et al.

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