Finnegan, Henderson, Farabow, Garrett & Dunner
Original image reading device
 An original image reading device having a plurality of light receiving elements for receiving light reflected from an original document, which are formed on a substrate, and for outputing image data signals. Two light receiving elements arrays are formed on a transparent substrate in association with two optical systems. The first light receiving elements array receives light coming through the upper surface of the transparent substrate. The second light receiving elements array receives light coming through the lower surface of the transparent substrate. With such a construction, the image at a location on an original document can be read with the two optical systems. Further, the construction can realize color original image reading device, high resolution, and different focal depths. 
Fuji Xerox Co., Ltd.
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Hisao Hajime
Ito Sugino