Examples of stalling of operation of imaging devices are described herein. In an example, the imaging device includes an input roller assembly to transport a medium in the imaging device and a line feed roller assembly disengagably coupled to the input roller assembly to selectively drive the input roller assembly. To stall the operation of the imaging device, a line feed shaft of the line feed roller assembly can be automatically disengaged from the input roller assembly to discontinue advance of the medium along a print path.

A banknote storage unit comprising: a first tape reel banknote storage device; a second tape reel banknote storage device; and a drive transmission means pivotable between engagement with said first tape reel banknote storage device and engagement with said second tape reel banknote storage device.

A transmission device includes a pickup roller assembly, a feeding roller assembly including a feeding shaft, a paper-out roller assembly including a paper-out shaft, a driving motor, a one-way drive gear module, a first transmission gear module, a second transmission gear module and a one-way clutch. The first transmission gear module includes a plurality of transmission gears disposed to two ends of the feeding shaft and two ends of the paper-out shaft. The second transmission gear module is engaged with one of the transmission gears mounted around one end of the feeding shaft. The one-way clutch disposed between the feeding shaft and the paper-out shaft, includes a first clutch gear, a second clutch gear, a third one-way clutch gear disposed between the first clutch gear and the second clutch gear, and a compression spring disposed to one end of the second clutch gear.

A sheet supply apparatus detachably attached to an image forming apparatus is configured to receive a drive force from the image apparatus to supply sheet to the image forming apparatus. The sheet supply apparatus includes a sheet supply tray, a sheet supply roller, a first transmission mechanism configured to transmit a drive force from the image forming apparatus to the sheet supply roller, a second transmission mechanism including an output member and configured to transmit a drive force supplied from the image forming apparatus to the output member, a clutch mechanism configured to intermittently transmit a drive force from the image forming apparatus to the second transmission mechanism, a latch member pivotable between a restriction position and an allowance position, a change cam, a sector gear, a rotational force applying member, an engaging member, a first engagement portion, a second engagement portion, and an electromagnetic solenoid.

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.

An image forming device includes: a tray; an image forming unit; a drive source; a feeding roller; a support portion; a support shaft; and a drive shaft. The tray is configured to support a recording sheet. The image forming unit is configured to form an image on the recording sheet. The drive source is configured to generate a driving force. The feeding roller is configured to rotate upon receipt of the driving force to feed the recording sheet supported by the tray toward the image forming unit. The support portion is configured to rotatably support the feeding roller. The support shaft is disposed above the tray and configured to pivotally movably support the support portion. The drive shaft is independent of the support shaft and configured to rotate upon receipt of the driving force from the drive source.

A paper feeding apparatus for an image forming apparatus is provided. The paper feeding apparatus includes a first paper feeding roller, a first one-way rotation transmission member disposed coaxially on the first paper feeding roller to transmit a first one-way rotational force to the first paper feeding roller, a second paper feeding roller spaced apart from the first paper feeding tray, a second one-way rotation transmission member disposed coaxially on the second paper feeding roller to transmit a second one-way rotational force to the second paper feeding roller, a drive source to rotate the first and second paper feeding rollers, a first power transmission member disposed between the first one-way rotation transmission member and the drive source, and a second power transmission member disposed between the second one-way rotation transmission member and the drive source.

A sheet discharge apparatus includes first and second discharge trays, a support unit, first and second discharge rollers, and first and second controlling units. The second discharge tray is disposed above the first discharge tray and is detachable from the support unit. The first and second discharge rollers discharge a sheet toward the first and second discharge trays respectively. The first controlling unit executes control such that, in a case that the second discharge tray is detached from the support unit while the first discharge roller and the second discharge roller are halted, the first discharge roller remains halted, and in a case that the second discharge tray is detached from the support unit while the first discharge roller and the second discharge roller are rotating, the first discharge roller is halted after the first discharge roller continues rotating until a sheet has been discharged toward the first discharge tray.

One embodiment provides a power transmission structure of a media separation unit, the power transmission structure including a pickup pulley and a feed pulley that are provided at positions spaced apart at both sides; a media separation belt configured to travel along the pickup pulley and the feed pulley, grip and convey media, and have a slope that changes due to contact with a bill press configured to support the media and move upward or downward at a lower side of the pickup pulley; a motor configured to provide a driving force for the media separation belt to rotate in one direction or the other direction; at least one relay gear configured to transmit the driving force of the motor; a swing arm configured to swing in both direction within a predetermined angle range in conjunction with rotation of the relay gear; a swing gear configured to be connected to the swing arm and rotate in conjunction with the rotation of the relay gear to transmit power for the swing arm to swing; and a clutch gear configured to intermittently be coupled to or released from the swing gear according to a swing direction of the swing arm and configured to transmit power to the pickup pulley through a connection belt, whose slope changes in conjunction with a change in the slope of the media separation belt.

A sheet storage device includes a lift plate, a push-up member, a first gear, a second gear which meshes with the first gear, a transmission mechanism which includes a third gear that meshes with the second gear and a turning restriction member. The first gear includes a support portion. The turning restriction member includes: an annular portion which is slidable on the outer circumferential surface of the support portion in a direction of rotation; and a protrusion portion which protrudes outward in a radial direction from the annular portion to be able to engage with the second gear. The protrusion portion has a shape such that the protrusion portion cannot pass through a gap between the second gear and the annular portion and is located, relative to the gap, on a downstream side in a direction of rotation of the second gear caused by the power of a motor.