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Proceedings Paper

Contact-type color image sensor using color phototransistors
Author(s): Tadahiko Hamaguchi; Takashi Takeda; Tsuneo Sato; Masatoshi Katoh; Yoshihiro Nagata
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Paper Abstract

We have developed a contact-type color image sensor for use in color scanners and color copy machines. This sensor features a high-precision array of phototransistor chips fitted with RGB color filters. It scans an A4-size document in 10 seconds with a high resolution 400 DPI. This sensor is compact and easy to use, and does not require special sensor drivers, a read-position compensation memory or spurious color suppression circuit. A color image sensor, rod lens array, fluorescent lamp, and drive circuit board are built in.

Paper Details

Date Published: 1 May 1994
PDF: 8 pages
Proc. SPIE 2172, Charge-Coupled Devices and Solid State Optical Sensors IV, (1 May 1994); doi: 10.1117/12.172759
Show Author Affiliations
Tadahiko Hamaguchi, Mitsubishi Electric Corp. (Japan)
Takashi Takeda, Mitsubishi Electric Corp. (Japan)
Tsuneo Sato, Mitsubishi Electric Corp. (Japan)
Masatoshi Katoh, Mitsubishi Electric Corp. (Japan)
Yoshihiro Nagata, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 2172:
Charge-Coupled Devices and Solid State Optical Sensors IV
Morley M. Blouke, Editor(s)

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