High Performance 400DPI A4 size Contact Image Sensor (CIS) module for Scanner and G4 Fax Applications

Long-Ching Yeh; Way-Chen Wu; Ru-Shyah Tang; Yong-Song Tsai; Eugene Chiang; Pat Chiao; Chu-Lin Chu; Weng-Lyang Wang

doi:10.1117/12.633741

1 December 1991 High Performance 400DPI A4 size Contact Image Sensor (CIS) module for Scanner and G4 Fax Applications

Long-Ching Yeh, Way-Chen Wu, Ru-Shyah Tang, Yong-Song Tsai, Eugene Chiang, Pat Chiao, Chu-Lin Chu, Weng-Lyang Wang

Proceedings Volume 1527, Current Developments in Optical Design and Optical Engineering; (1991) https://doi.org/10.1117/12.633741
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Recent development ofG4 fax and scanner requires a high speed, high resolution, and high contrast second generation image sensor. This paper describes a silicon butting Contact Image Sensor (CIS) module which has been developed and produced to solve the problems encountered by using CCD image sensors. Due to the flexibility ofthe design, the CIS module can be made for the A6, A4 ,B4 or other paper sizes. This device can be operated at high speed (2 MHz or higher), high dynamic range (1000: 1) and high resolution (400DPI). By adding alayer ofcolor filter on top of the photosensor, it is also applicable for the color G4 facsimile and color scanner.

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Long-Ching Yeh, Way-Chen Wu, Ru-Shyah Tang, Yong-Song Tsai, Eugene Chiang, Pat Chiao, Chu-Lin Chu, and Weng-Lyang Wang "High Performance 400DPI A4 size Contact Image Sensor (CIS) module for Scanner and G4 Fax Applications", Proc. SPIE 1527, Current Developments in Optical Design and Optical Engineering, (1 December 1991); https://doi.org/10.1117/12.633741

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KEYWORDS

Image sensors

Phototransistors

Sensors

Scanners

Light emitting diodes

Modulation transfer functions

Optical engineering

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