Abstract: A sheet handler for deskewing and registering sheets en route to a processing station in an image processing apparatus includes cross rolls that drive each copy sheet against a registration edge for deskewing purposes. The angle of a driven one of the cross rolls with respect to the registration edge is adjusted, as well as, its speed varied based on the output of a sheet weight detector to a controller that controls pivotal movement of the driven cross roll.

Abstract: In a document handler for a copier for providing recirculative copying at the copier imaging station of plural documents stacked in a recirculative copying input tray with automatic inversion of duplex documents by a document inverter with a document inverting chute in the recirculative path of the documents, and with a document return path after this recirculative copying back to the input tray, and wherein this same document handler also has an integral alternative non-recirculative copying document input for non-recirculative document copying at the same imaging station, and a document output for this alternative document input for ejecting documents from the document handler after the non-recirculative copying, the improvement wherein the document inverting chute is substantially planer, and open ended, to provide for alternative unobstructed unidirectional document feeding therethrough, and the document inverter operates to reverse the direction of movement of documents in the inverting chute from the in

Abstract: In a copier with a recirculating document handler pivotally mounted to be closable over an imaging station on the upper surface of the copier, and a document inverter, and the capability of automatically copying both sides of documents at the imaging station by utilizing the document inverter to invert documents being recirculated by the document handler, the improvement wherein the document inverter is only partially in the document handler and operatively but non-integrally incorporates a generally planar document chute which is independently integrally mounted to the copier and is not a physical part of or pivotal with the document handler, to provide a more compact document handler with automatic document inversion capability, wherein the document chute is defined by upper and lower baffles for containing and guiding a document for reversal therein by the document inverter, and wherein at least a major portion of these upper and lower baffles are integral to the copier, laterally adjacent to both the imag

Abstract: In a document feeder for a copier which transports a document sheet onto and over the platen of the copier and which places the document in a desired registration position on the platen for copying by stopping the document platen transport of the document feeder, and thereby stopping the document being fed thereby at the desired position, without the document hitting a mechanical registration stop, the improvement comprising a variable registration control system for controlling the document platen transport to stop at a desired calculated stopping position, including a sensor adjacent by a known fixed distance the upstream, entrance, side of the platen for sensing the trail edge of an individual document sheet being transported onto the platen by the document platen transport, providing a first signal indicative of the selected size of the copy sheet onto which that document sheet is to be copied, providing a second signal indicative of the optical magnification or reduction ratio with which that document is