Area detection method of an original for use in copying machines

Details Area detection method of an original for use in copying machines Area detection method of an original for use in copying machines

1983-11-15

1986-07-08

Rosenberger, R. A.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356384, 356387, 355 54, 355 59, G01B 1128, G01B 1102, G03B 2744

Patent

active

045989990

ABSTRACT:
The area detection method detects an area on an original enclosed with a mark of specific color by the steps of scanning the original by a photosensor, judging whether the number of the mark segment detected by the photosensor in a single scan line is an even or odd number for each scan and detecting the area based on the output of the photosensor in the scan period for which the judgement is made that the number of the detected mark segment is an even number.

REFERENCES:
patent: 4332475 (1982-06-01), Demarest

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