Electrophotographic copying apparatus with novel exposure slit m

Details Electrophotographic copying apparatus with novel exposure slit m Electrophotographic copying apparatus with novel exposure slit m

1977-05-23

1979-02-13

Moses, R. L.

Photocopying

Including fiber optics

355 11, G03G 1528

Patent

active

041392973

ABSTRACT:
An electrophotographic copying apparatus incorporating therein an improved slit control device, which control device includes a blade member extending across the width of a photoreceptor drum. The width of the blade member in a direction normal to the axis of the photoreceptor drum is so arranged as to gradually increase toward its opposite ends in comparison with a generally uniform width in its central portion so as to form a slit which is wide in the central portion and gradually narrowed toward opposite ends, by which arrangement a sharp and definite image of an original is formed even on a photoreceptor drum of small diameter.

REFERENCES:
patent: 3062108 (1962-11-01), Mayo
patent: 3105425 (1963-10-01), Cerasani et al.
patent: 3266366 (1966-08-01), Hunt
patent: 3926518 (1975-12-01), Berry et al.

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