Manuscript-reading apparatus with jam detection sensors

摘要

An identifying system of a manuscript-reading device, receives signals from a pair of sensors disposed upstream of an optical system on the manuscript conveying path while conveying the manuscript for reading an image. In the event that the downstream side sensor remains OFF a predetermined time after the upstream side sensor turns ON or the downstream sensor remains ON a predetermined time after the upstream sensor turns OFF, an identifying system then identifies the presence of a jammed manuscript. Only when both sensors turn OFF together does the identifying system identify a state of release of the jammed manuscript.