Electrostatic copying apparatus

Photocopying – Including fiber optics

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Details

355 14E, 355 69, G03G 1528, G03B 2772

Patent

active

043244858

ABSTRACT:
In a reciprocating scan system, movement is stopped for a predetermined length of time between a scan stroke and a return stroke to prevent erroneous imaging of a photoconductive drum (12) which would result in unnecessary loading of a cleaning unit (26) and formation of a partial reversed image in addition to a desired image on a copy sheet (23). Control circuitry (61) may be provided to cause the stopping operation only when the magnification is less than unity or when the length of the copy sheet (23) in the scan direction is longer than the corresponding image length.

REFERENCES:
patent: 3689143 (1972-09-01), Case et al.
patent: 4116562 (1978-09-01), Libby et al.
patent: 4118117 (1978-10-01), Koizumi et al.
patent: 4159173 (1979-06-01), Kasuga
patent: 4183656 (1980-01-01), Ishihara et al.
patent: 4183660 (1980-01-01), Bujese

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