Document reader apparatus

Details Document reader apparatus Document reader apparatus

1991-02-21

1992-09-22

Howell, Janice A.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250561, G60K 900

Patent

active

051499770

ABSTRACT:
A document reader (scanner) is disclosed which can automatically provide a provisional decision on the acceptability of the document image quality, and display the documents judged to be unacceptable for visual confirmation, using a display means. The apparatus can detect skewing of documents and anomalous document image contrasts, and the degree of skewing to be detected can be adjusted as required.

REFERENCES:
patent: 4533959 (1985-08-01), Lakurai
patent: 4802229 (1989-01-01), Yamada
patent: 5001766 (1991-03-01), Baird
patent: 5021676 (1991-06-01), Drason et al.
patent: 5027227 (1991-06-01), Kita
patent: 5048094 (1991-09-01), Aoyama et al.
patent: 5054098 (1991-10-01), Lee

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