Document sheet size or position recognition device

Details Document sheet size or position recognition device Document sheet size or position recognition device

1985-11-04

1987-10-06

Laroche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250561, 356375, G01N 2186

Patent

active

046985115

ABSTRACT:
In a document sheet recognition device, a size or position of a document sheet mounted on a document table is detected by detecting light intensities at a plurality of fixed areas on the document sheet table, and the size or position thereof is determined in accordance with the detected light intensities.

REFERENCES:
patent: 2791931 (1957-05-01), Summerhayes, Jr.
patent: 4439790 (1984-03-01), Yoshida
patent: 4505574 (1985-03-01), Kurata et al.
patent: 4554592 (1985-11-01), Yoshida
patent: 4572650 (1986-02-01), Okuda

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