DOCUMENT SCANNER

摘要

A one-piece housing holds an image sensing module having a transparent image sensing surface and a document drive roller in close alignment. A cover closely fits around the housing and is positioned in close alignment with respect to the housing. The cover means and housing cooperate to define a document entry path in which a plurality of sensors are located: a set of document-skew-detecting sensors and a set of document-insertion-detecting sensors, the sets of sensors acting independently of each other. The number and spacing of the sensors in the set of document-insertion-detecting sensors is such that the narrowest expected document encounters at least one such sensor. The cover means and housing also cooperate to define a document scanning path and one or more document exit paths. The cover means includes a chute adjustable to either of one of two positions, the chute cooperating with the cover means and housing to define a first document exit path on the opposite side of said scanner from the document entry path and a second document exit path on the same side of the scanner as the document entry path. The cover means includes front and rear covers, the covers including means for interlocking and positioning the front and rear covers with each other and with said housing.