Image forming apparatus with selective erase

Details Image forming apparatus with selective erase Image forming apparatus with selective erase

1989-10-05

1990-11-20

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355202, 355210, G03G 2100

Patent

active

049722280

ABSTRACT:
An image forming apparatus is disclosed that provide a selective erase feature that enables an operator to block or erase a portion of an original image to be reproduced. The apparatus includes a control unit that generates a set of erase characters based on erase coordinate signals provided by an input unit. The bit map representations of the erase characters are stored in a font memory and are used by the control unit to generate an output data stream that is supplied to an erase unit.

REFERENCES:
patent: 4687317 (1987-08-01), Appel et al.
patent: 4701044 (1987-10-01), Horiuchi et al.
patent: 4734789 (1988-03-01), Smith et al.
patent: 4740818 (1988-04-01), Tsilibes et al.
patent: 4763165 (1988-08-01), Watanabe
patent: 4777510 (1988-10-01), Russel
patent: 4794424 (1988-12-01), Higaki et al.
patent: 4806976 (1989-02-01), Kato et al.
patent: 4812874 (1989-03-01), Kubota et al.
patent: 4837599 (1989-06-01), Ohira et al.

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