Image forming apparatus capable of evaluating image forming perf

Details Image forming apparatus capable of evaluating image forming perf Image forming apparatus capable of evaluating image forming perf

1993-09-20

1995-05-23

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355233, 355243, G03G 1500, G03G 1504

Patent

active

054186030

ABSTRACT:
An image forming apparatus includes an original placement portion and a reference original portion outside of the original placement portion, a scanning device capable of selectively scanning either the original placement portion or the reference original portion, an image forming device for forming an image in accordance with the scanning device, a selection device for selecting the scanning of the original placement portion or the scanning of the reference original portion, and a reading device for reading an image of the reference original portion formed by the image forming device to evaluate a performance of the image forming device.

REFERENCES:
patent: 4831420 (1989-05-01), Walsh et al.
patent: 4965634 (1990-10-01), Bando
patent: 5006896 (1991-04-01), Koichi et al.
patent: 5099279 (1992-03-01), Shimizu
patent: 5146269 (1992-09-01), Shimizu et al.

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