Contact-type color image sensor using color phototransistors

Tadahiko Hamaguchi; Takashi Takeda; Tsuneo Sato; Masatoshi Katoh; Yoshihiro Nagata

doi:10.1117/12.172759

1 May 1994 Contact-type color image sensor using color phototransistors

Tadahiko Hamaguchi, Takashi Takeda, Tsuneo Sato, Masatoshi Katoh, Yoshihiro Nagata

Proceedings Volume 2172, Charge-Coupled Devices and Solid State Optical Sensors IV; (1994) https://doi.org/10.1117/12.172759
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

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.

Citation Download Citation

Tadahiko Hamaguchi, Takashi Takeda, Tsuneo Sato, Masatoshi Katoh, and Yoshihiro Nagata "Contact-type color image sensor using color phototransistors", Proc. SPIE 2172, Charge-Coupled Devices and Solid State Optical Sensors IV, (1 May 1994); https://doi.org/10.1117/12.172759

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