An image forming apparatus includes a reverse roller pair including a drive roller and a driven roller by which a recording medium is nipped and conveyed reversibly, a motor configured to rotate the drive roller reversibly, a conveyance roller pair, a detection unit configured to detect the recording medium conveyed by the conveyance roller pair, and a controller configured to control the motor, in a case in which the recording medium is detected by the detection unit, to cause the drive roller to rotate in a first rotation direction by a first rotation amount, thereafter to cause the drive motor to rotate in a second rotation direction by a second rotation amount. A difference between the first rotation amount and the second rotation amount is set to an integer multiple of a predetermined rotation amount of the motor, the predetermined rotation amount making the drive roller one rotation.

An image forming apparatus includes a reverse roller pair including a drive roller and a driven roller by which a recording medium is nipped and conveyed reversibly, a motor configured to rotate the drive roller reversibly, a conveyance roller pair, a detection unit configured to detect the recording medium conveyed by the conveyance roller pair, and a controller configured to control the motor, in a case in which the recording medium is detected by the detection unit, to cause the drive roller to rotate in a first rotation direction by a first rotation amount, thereafter to cause the drive motor to rotate in a second rotation direction by a second rotation amount. A difference between the first rotation amount and the second rotation amount is set to an integer multiple of a predetermined rotation amount of the motor, the predetermined rotation amount making the drive roller one rotation.

A sheet supplying apparatus, which is capable of winding a sheet tightly, includes a driving unit configured to cause a roll including a wound consecutive sheet to rotate in a first direction for feeding the sheet or a second direction opposite to the first direction, a sensor that detects a leading end portion of the sheet separated from an outer circumferential surface of the roll, and a contact body that presses the outer circumferential surface. Before the sheet is fed, in a state in which the contact body presses the outer circumferential surface, the driving unit causes the roll to continuously rotate in the second direction until a detection cycle of the leading end portion by the sensor is less than a predetermined value.

A sheet supplying apparatus, which is capable of winding a sheet tightly, includes a driving unit configured to cause a roll including a wound consecutive sheet to rotate in a first direction for feeding the sheet or a second direction opposite to the first direction, a sensor that detects a leading end portion of the sheet separated from an outer circumferential surface of the roll, and a contact body that presses the outer circumferential surface. Before the sheet is fed, in a state in which the contact body presses the outer circumferential surface, the driving unit causes the roll to continuously rotate in the second direction until a detection cycle of the leading end portion by the sensor is less than a predetermined value.

A conveying apparatus for feeding sheets into a processing apparatus is discloses which comprises a plurality of nips within which sheets are gripped and driven along a conveying direction towards the processing apparatus, each nip being defined between a respective drive wheel and an opposing reaction surface. The drive wheels are omni-wheels configured to apply a frictional force to advance the sheets in the conveying direction while permitting free movement of the sheets in a direction transverse to the conveying direction, the reaction surfaces permitting free movement of the sheets in the transverse direction, and an elongate guide is arranged on one side of the conveying apparatus, to extend generally parallel to the conveying direction, the conveying apparatus being configured to urge conveyed sheets in the transverse direction into contact with the guide. A control system is provided to move the guide generally in the transverse direction in dependence upon sensed fiducials on the conveyed sheets, to ensure correct alignment of the sheets in the transverse direction with respect to the processing apparatus.

A conveying apparatus for feeding sheets into a processing apparatus is discloses which comprises a plurality of nips within which sheets are gripped and driven along a conveying direction towards the processing apparatus, each nip being defined between a respective drive wheel and an opposing reaction surface. The drive wheels are omni-wheels configured to apply a frictional force to advance the sheets in the conveying direction while permitting free movement of the sheets in a direction transverse to the conveying direction, the reaction surfaces permitting free movement of the sheets in the transverse direction, and an elongate guide is arranged on one side of the conveying apparatus, to extend generally parallel to the conveying direction, the conveying apparatus being configured to urge conveyed sheets in the transverse direction into contact with the guide. A control system is provided to move the guide generally in the transverse direction in dependence upon sensed fiducials on the conveyed sheets, to ensure correct alignment of the sheets in the transverse direction with respect to the processing apparatus.

An image forming apparatus includes a main body, a sheet cassette, and a controller. The main body includes a first electrode, a second electrode, and a capacitance detector configured to output a signal indicating a value corresponding to a quantity of electricity stored in the first electrode and the second electrode. The sheet cassette includes a sheet guide, and a conductor disposed in an upper portion of the sheet guide. In a state in which the sheet cassette is at an installation position defined in the main body, the first electrode and the second electrode face the conductor in an up-down direction and are at different positions in a moving direction in which the sheet guide is movable. The controller is configured to detect a position of the sheet guide from the value of the signal outputted from the capacitance detector.

An image forming apparatus includes a main body, a sheet cassette, and a controller. The main body includes a first electrode, a second electrode, and a capacitance detector configured to output a signal indicating a value corresponding to a quantity of electricity stored in the first electrode and the second electrode. The sheet cassette includes a sheet guide, and a conductor disposed in an upper portion of the sheet guide. In a state in which the sheet cassette is at an installation position defined in the main body, the first electrode and the second electrode face the conductor in an up-down direction and are at different positions in a moving direction in which the sheet guide is movable. The controller is configured to detect a position of the sheet guide from the value of the signal outputted from the capacitance detector.

A diverter conveyor includes a main conveyor having an upper deck and a lower deck, the upper deck including a plurality of belts, and the lower deck including a plurality of contact elements such as wheels. A plurality of paddles is mounted downstream of an entrance end of the conveyor and an actuator is configured to shift the plurality of paddles from a first position outside a sheet transport path to a second position extending into the sheet transport path such that the plurality of paddles in the second position diverts sheets from the main transport path into a diverted path and onto a rejection support.

A diverter conveyor includes a main conveyor having an upper deck and a lower deck, the upper deck including a plurality of belts, and the lower deck including a plurality of contact elements such as wheels. A plurality of paddles is mounted downstream of an entrance end of the conveyor and an actuator is configured to shift the plurality of paddles from a first position outside a sheet transport path to a second position extending into the sheet transport path such that the plurality of paddles in the second position diverts sheets from the main transport path into a diverted path and onto a rejection support.