Copying apparatus

Details Copying apparatus Copying apparatus

1989-03-29

1990-08-28

Moses, R. L.

Photocopying

Contact printing

Light boxes

355214, 355246, 355326, G03G 1500

Patent

active

049529862

ABSTRACT:
A copying apparatus having a prescanning function for obtaining density data to adjust copy parameters includes a correction function which eliminates the data obtained from a portion of a predetermined color, from the density data detected on a prescanning process. The density data can be restricted within a predetermined range. The predetermined range can be easily set by the user.

REFERENCES:
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patent: 4624547 (1986-11-01), Endo et al.
patent: 4624548 (1986-11-01), Takayanagi
patent: 4627713 (1986-12-01), Abuyama
patent: 4662738 (1987-05-01), Kasuya
patent: 4674863 (1987-06-01), Tamesada et al.
patent: 4684239 (1987-08-01), Takayanagi et al.
patent: 4702590 (1987-10-01), Usami
patent: 4733276 (1988-03-01), Kakitani
patent: 4745434 (1988-05-01), Shimomura et al.
patent: 4812881 (1989-03-01), Kumamoto et al.
patent: 4860059 (1989-08-01), Terashita

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