Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1988-11-08
1989-11-21
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Picture signal generator
358494, H04N 112
Patent
active
048826316
ABSTRACT:
An image reading device comprises an original table having a surface area defined as a reading section, a black mark, a carrier driven towards the reading section across the mark in the sub-scanning direction, a fluorescent light for illuminating the original and mark, and an image sensor fixed on the carrier and having a plurality of light receiving elements arranged in a line to read the image in the main scanning direction. In this image reading device, the mark is formed of a triangle which has a first side extending in the sub-scanning direction and a second side extending from the first side towards the original table at an angle with respect to the first side smaller than an angle made between the first side and the main scanning direction, and a reading control circuit is provided to detect that black picture element data is output from at least a preset number of successive light receiving elements while the image sensor is being moved by the movement of the carrier to pass across the mark, and setting the reading starting position in the main scanning direction by using, as a reference position, the position of the light receiving element which corresponds to the second side of the mark and is included in the light receiving elements which output the image data.
REFERENCES:
patent: 4439790 (1984-03-01), Yoshida
patent: 4459619 (1984-07-01), Yoshida
patent: 4465939 (1984-08-01), Tamura
patent: 4724330 (1988-02-01), Tuhro
Mine Kazunori
Murakami Keisuke
Urata Hiromasa
Britton Howard W.
Tokyo Electric Co. Ltd.
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