A sheet discharging apparatus includes a first discharge unit and a second discharge unit configured to discharge a sheet respectively, a first stacking unit configured to stack the sheet discharged by the first discharge unit, a second stacking unit disposed below the first stacking unit, and configured to stack the sheet discharged by the second discharge unit, a lifting unit configured to lift and lower the first and second stacking units, and a control unit configured to perform a separation process of moving at least one of the first and second stacking units so as to increase a distance between the first and second stacking units in a vertical direction in a case where a matter has come into contact with a lower surface of the first stacking unit.

A sheet discharging apparatus includes a first stacking unit to stack a sheet discharged by a first discharge unit, a second stacking unit disposed below the first stacking unit to stack the sheet discharged by a second discharge unit, and a lifting unit to lift and lower the first and second stacking units. A detection unit changes an output value based on contact of a matter with a lower surface of the first stacking unit, and a distance estimation unit estimates a distance between the first stacking unit and the second stacking unit. A separation process lifts the first stacking unit to increase a distance between the first and second stacking units in a vertical direction in a case where the output value changes based on contact of the matter with the lower surface of the first stacking unit and the estimated distance being smaller than a threshold value.

An image processing apparatus includes a motor, a sheet feeding roller, a separation roller, a conveyance roller, a first clutch set provided in a transmission path of a driving force transmitted from the motor to the sheet feeding roller, and a second clutch set provided in a transmission path of a driving force transmitted from the motor to the separation roller. The first clutch set includes a first one-way clutch and a first two-way clutch, and the second clutch set includes a second one-way clutch and a second two-way clutch. A maximum value of a first play angle set between a first transmission portion and a first transmitted portion in the first two-way clutch is larger than a maximum value of a second play angle set between a second transmission portion and a second transmitted portion in the second two-way clutch.

Provided is an image reading apparatus in which at least part of a feeding roller that feeds out a document placed on a document support unit to a first transport roller is present within a region of the first transport roller in an apparatus depth direction and a position at which the feeding roller and a document are brought into contact with each other is present within the region of the first transport roller in the apparatus depth direction.

An example print medium supplying apparatus includes a print medium transporting device to pick up a print medium loaded in a loading portion and transport the picked-up print medium, a print medium alignment portion to align a leading end of the transported print medium, a first sensor to sense the print medium that passes through a feed roller of the print medium transporting device, and a processor to, based on a measured value with respect to the print medium sensed by the first sensor and a multi-feeding determination reference value corresponding to a sheet of the print medium, detect multi-feeding of the print medium and process the detected multi-feeding by controlling the print medium transporting device and the print medium alignment portion.

A reading apparatus includes a transport unit that transports a document along a transport path, a multi feed detection unit that detects multi feed for a transport document that is the document being transported by the transport unit, a reading unit that reads the transported document, and a controller that controls the transport unit, wherein the controller acquires a multi feed length that is a length of a range in which multi feed occurs in the transported document according to a detection result of multi feed by the multi feed detection unit, causes the transport unit to stop transport of a document following the transport document by when the multi feed length is equal to or greater than a predetermined threshold value for the multi feed length, and causes the transport unit to perform transport of the following document when the multi feed length is less than the threshold value.

An information processing apparatus includes a setting reception section and a posture acquisition section. The information processing apparatus outputs a scan setting to an image reading apparatus including a main body having a plurality of postures. The main body reads a document according to the scan setting. The setting reception section is configured to display a setting item included in the scan setting on a display portion and receive a change in a setting content shown in the setting item. The posture acquisition section acquires posture information indicating the posture of the main body from the image reading apparatus. The setting reception section switches the setting item displayed on the display portion to the setting content according to the posture when the posture indicated by the posture information is switched.

A sheet separating device includes a stacker, a pickup member, an air supplier, and a sheet floating restraint. The stacker is configured to stack a plurality of sheets. The pickup member is configured to convey the plurality of sheets one by one from the stacker. The air supplier includes an air outlet, at a downstream side of the stacker in a sheet conveyance direction. The air supplier is configured to blow air toward a downstream end of the plurality of sheets in the sheet conveyance direction. The sheet floating restraint is configured to restrict floating of a part of the plurality of sheets separated by air blown from the air outlet. The sheet floating restraint is replaceable with another sheet floating restraint. The sheet floating restraint and said another sheet floating restraint have respective shapes different from each other.

A drive circuit including a push-pull circuit is a circuit in which a converted signal whose voltage level is inverted compared with a reference signal is input to the gate terminal of a first N-type MOSFET, and the reference signal is input to the gate terminal of a second N-type MOSFET. A second adjustment circuit advances the falling timing of the converted signal input to the gate terminal of the first N-type MOSFET.

An image reading apparatus includes a reading module provided with reading elements arranged in a direction of arrangement intersecting a direction of transportation of an original copy, and configured to read an image on the transported original copy. The apparatus also includes a background plate provided with a white background portion for shading correction, and a black background portion for cutting out the original copy and having lower brightness than brightness of the white background portion. An area of the black background portion is larger than an area of the white background portion, and the white background portion and the black background portion are arranged in the direction of arrangement.