US Patent 7551333 Book scanner

A book scanner for scanning two adjacent pages in documents bound in volume includes a housing, two image scanning units, and a conveying device. The housing has two scanning tables connected to each other. An included angle is formed between the two scanning tables and a crest line is formed at a connection of the two scanning tables. The two image scanning units are movably disposed in the housing to project a scanning light through a window of each scanning table respectively, so as to scan images of the two adjacent pages. The two image scanning units are connected to the conveying device to be supported and moved relative to the corresponding scanning tables in a direction parallel to the crest line, so as to be moved simultaneously and to scan the images of the two adjacent pages respectively.