Contact-type color image sensor using color phototransistors

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.