A rotary arm restricts the rotation of a first sun gear or a second sun gear according to forward/reverse rotation drive of sheet discharge rollers. As a result, a rotating direction of a transmission gear coupled to the sheet discharge rollers is switched. If 1A denotes a pressure angle of gear teeth of a gear portion of the first sun gear and 2A denotes a pressure angle of gear teeth of a first planetary gear, a relationship of 2A+0.51A2A+1.5 is satisfied.

According to one embodiment, a paper conveyance apparatus includes: a paper feed section on which paper is placed; a first roller configured to be arranged at the upstream side of a reading position where the paper is read to convey the paper at a first speed; a second roller configured to be arranged between the first roller and the paper feed section to convey the paper at a second speed faster than the first speed; a motor; a fourth roller configured to be arranged between the first roller and the reading position and driven by the motor to convey the paper to the reading position at the first speed; and a transmission section configured to always transmit a rotation driving force of the motor to the first roller and the fourth roller.

A sheet conveyance apparatus includes a first conveyance unit, a second conveyance unit, a drive source, and a drive transmission unit. When the first conveyance unit conveys a sheet in a second conveyance direction and the second conveyance unit does not convey the sheet, the drive transmission unit enters a second transmission state in such a manner that the first conveyance unit conveys the sheet at a first conveyance speed. The second conveyance unit conveys the sheet at a second conveyance speed higher than the first conveyance speed. From a contact state in which the sheet conveyed in the second conveyance direction is in contact with both the first conveyance unit and the second conveyance unit is caused, until the contact state is released, the drive transmission unit is kept in a non-transmission state.

A sheet supply device detachably attachable to an image forming apparatus includes: a main body; a sheet supply roller; an external output gear; a clutch mechanism; and first and second transmission mechanisms. The main body is provided with a sheet supply tray on which a sheet is mountable. The sheet supply roller is in contact with a sheet mounted on the sheet supply tray and configured to rotate to supply the sheet toward the image forming apparatus. The external output gear is configured to output a driving force to an outside. The clutch mechanism is configured to transmit and interrupt a driving force from the image forming apparatus. The first transmission mechanism is configured to transmit the driving force received through the clutch mechanism to the sheet supply roller. The second transmission mechanism is configured to transmit the driving force received through the clutch mechanism to the external output gear.

Systems and methods for deskewing a media object may include receiving, at a deskew of a self-service terminal, the media object. The method may also include engaging a drive member to position the media object into a first position within the deskew. A deskew member may be engaged in a first direction to position the media object into a second position within the deskew. The deskew member may be engaged in a second direction to position the media object into a third position within the deskew.

A sheet conveying device includes: a sheet discharge roller disposed in a conveying path of sheets so as to discharge a sheet being conveyed to a sheet discharge tray; a conveying unit that conveys sheets on a side of the conveying path closer to an upstream side than the sheet discharge roller; a motor that rotates at a constant system speed during conveying of sheets to drive the conveying unit; a transmission mechanism that transmits power of the motor to the sheet discharge roller to rotate the sheet discharge roller; and a controller that controls an operation of the transmission mechanism, wherein the transmission mechanism changes a circumferential speed of the sheet discharge roller, and the controller performs speed reduction control of controlling the operation of the transmission mechanism to temporarily reduce the circumferential speed of the sheet discharge roller when a sheet is discharged to the sheet discharge tray.

A transmission device of automatic document feeder includes a pickup roller assembly, a paper-feed roller assembly, a paper-out roller assembly, a pickup gear assembly for driving the pickup roller assembly, a first transmission gear assembly, a second transmission gear assembly, a drive gear assembly and a motor. The paper-feed roller assembly includes a paper-feed shaft. The paper-out roller assembly includes a paper-out shaft. The first transmission gear assembly includes a first one-way gear and a second one-way gear. The motor bidirectionally drives the drive gear assembly. The motor drives the drive gear assembly to drive the first one-way gear together with the second transmission gear assembly or the second one-way gear together with the second transmission gear assembly to drive the paper-out shaft and the paper-feed shaft to unidirectionally rotate towards the same direction.

Systems and methods for deskewing a media object may include receiving, at a deskew of a self-service terminal, the media object. The method may also include engaging a drive member to position the media object into a first position within the deskew. A deskew member may be engaged in a first direction to position the media object into a second position within the deskew. The deskew member may be engaged in a second direction to position the media object into a third position within the deskew.

According to one embodiment, a paper conveyance apparatus includes: a paper feed section on which paper is placed; a first roller configured to be arranged at the upstream side of a reading position where the paper is read to convey the paper at a first speed; a second roller configured to be arranged between the first roller and the paper feed section to convey the paper at a second speed faster than the first speed; a motor; a fourth roller configured to be arranged between the first roller and the reading position and driven by the motor to convey the paper to the reading position at the first speed; and a transmission section configured to always transmit a rotation driving force of the motor to the first roller and the fourth roller.

The apparatus includes a first clutch and a second clutch. The first clutch transmits rotation of the driving unit in a first rotation direction to the first feeding device without transmitting rotation of the driving unit in a second rotation direction that is reverse to the first rotation direction to the first feeding device. The second clutch transmits the rotation of the driving unit in the second rotation direction to the conveyance device and the double-side printing conveyance device and without transmitting the rotation of the driving unit in the first rotation direction to the conveyance device and the double-side printing conveyance device. The third transmission path is configured to transmit the rotation of the driving unit to a conveyance device. The fourth transmission path is configured to transmit the rotation of the driving unit to a double-side printing conveyance device.