An optical image sensor apparatus in which a plurality of photosensors arrayed in a primary scanning direction are scanned to produce readout signals. The plurality of photosensors are classified into a number of groups each including a predetermined number of the photosensors, wherein those photosensors...http://www.google.com.au/patents/US4556800?utm_source=gb-gplus-sharePatent US4556800 - Optical image sensor apparatus with grouped photosensors connected in common
