Fitzpatrick, Cella, Harper & Scinto
Document sheet size or position recognition device
 In a document sheet recognition device, a size or position of a document sheet mounted on a document table is detected by detecting light intensities at a plurality of fixed areas on the document sheet table, and the size or position thereof is determined in accordance with the detected light intensities. 
Canon Kabushiki Kaisha
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Tetsuo Toshinori
Sueda Ando