Image forming apparatus

Details Image forming apparatus Image forming apparatus

1985-09-13

1987-08-11

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 14E, G03G 1500

Patent

active

046857940

ABSTRACT:
An image forming apparatus is provided with a light emitting element for indicating a specific range of an original disposed on an original table, and the other light emitting elements for erasing the electric charge on the surface of a photosensitive body in response to the specific range of the original indicated by the light emitting element. A spot light is applied to the original on the original table by the light emitting element, and moved to specify the perimeter of an erasure range. In image forming, the specific range inside the perimeter is defined by an erasure range designating key and is developed through the black toner by a developing device. On the other side, the specific range outside the perimeter is defined by the other erasure range designating key and is developed through the red toner by the other developing device.

REFERENCES:
patent: 3848989 (1974-11-01), Yamaji et al.
patent: 3914043 (1975-10-01), McVeigh
patent: 4582417 (1986-04-01), Yagasaki et al.

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