eading data from form sheetUS5031121 *Mar 29, 1990Jul 9, 1991Kabushiki Kaisha ToshibaSystem for automatically processing a document including text and associated image informationUS5034990 *May 8, 1990Jul 23, 1991Eastman Kodak CompanyEdge enhancement error diffusion thresholding for document imagesUS5095445 *Aug 22, 1990Mar 10, 1992Canon Kabushiki KaishaData communication system capable of communi