A drive transmitting device includes a first gear; a second gear in engagement with the first gear; wherein a first tooth which is at least one of teeth of the first gear has a tooth surface contacting a tooth of the second gear, wherein the tooth surface has such a shape that a contact point of the first tooth of the first gear to the tooth of the second gear is in a region of a first gear side with respect to a line of action which is formed by movement of a contact point between a tooth of the second gear and a second tooth of the first gear immediately before the first tooth with respect to a rotational moving direction of the first gear.

A paper reversing apparatus includes a main conveyance path, a reversing path, first and second guiding plates and a hardware processor. The reversing path is disposed so as to form a predetermined angle with respect to the main conveyance path. Paper enters the reversing path from the main conveyance path and leaves the reversing path to the main conveyance path by being sent backward. When paper enters the reversing path, the processor moves the first guiding plate to a position for the paper to follow the first guiding plate and moves the second guiding plate to a position to avoid the paper. When paper leaves the reversing path, the processor moves the second guiding plate to a position for the paper to follow the second guiding plate and moves the first guiding plate to a position to avoid the paper.

A dispenser for dispensing sheet product is provided including a housing that defines an interior configured to accommodate a source of sheet product and an outlet through which the sheet product is dispensed. The dispenser also includes a first roller that is rotatable and disposed in the housing. A portion of the sheet product is designed to be in contact with the first roller prior to being dispensed through the outlet. The dispenser also includes a knife drum that is rotatable and configured to cooperate with the first roller to dispense the sheet product. The knife drum includes a knife configured to cut the sheet product into individual sheets. The dispenser also includes a spring assembly that may be configured to bias the knife drum toward a predetermined position during rotation of the knife drum.

A sheet processing apparatus according to an embodiment includes a first tray that holds a sheet transported to the sheet processing apparatus in a sheet transport direction. A second tray is provided below the first tray and holds the sheet moved from the first tray. A first member, when the sheet is moved from the first tray to the second tray, rotates about a turning shaft, and presses a first portion of the sheet toward the second tray by making a pressing portion of the first member contact with the first portion. A second member, when the sheet is moved from the first tray to the second tray, protrudes toward the second tray at a position between the turning shaft and the pressing portion of the first member, and presses a second portion of the sheet toward the second tray, the second portion being located downstream of the first portion.

The medium conveying device, comprises (1) a feeder configured to feed a print medium in a conveyance direction; (2) a stacker configured to stack the print medium fed by the feeder; (3) a first guide arranged in downstream side of the print medium in the conveyance direction, the first guide including a first guide surface configured to guide a downstream edge of the print medium stacked on the stacker; and (4) a second guide arranged to be movable with respect to the first guide, the second guide including a second guide surface configured to guide the downstream edge of the print medium stacked on the stacker, wherein the second guide configured to move with respect to the first guide such that the second guide surface protrudes with respect to the first guide surface in an upstream direction as the stacked amount of the print medium stacked on the stacker decreases.

A sheet feeding device includes: a feeding unit that is provided to be movable in a forward-backward direction to move forward or backward relative to a sheet placing unit on which a sheet is placed, and feeds the sheet; a moving unit that moves the feeding unit in the forward-backward direction; a contact unit that is provided to be movable, with which the sheet placed on the sheet placing unit is brought into contact; a limitation unit that limits movement of the contact unit; and a releasing unit that, when the moving unit moves the feeding unit in a direction away from the sheet placing unit, with the movement of the feeding unit, releases limitation on the movement of the contact unit by the limitation unit.

A feeding device to transport a recording medium includes a main body having a drive source, a tray that is rotatably attached to the main body and on which the recording medium is to be loaded, a handling mechanism provided on the tray, an operation arm portion attached to the main body, and an operation lever provided on the tray so as to face the operation arm portion. The handling mechanism handles the recording medium. The operation arm portion moves in one direction along a rotation axis of the tray by a driving force from the drive source. The operation arm portion moves in the one direction so that the operation arm portion abuts on the operation lever and transmits the driving force to the operation lever so that the operation lever is pushed. The driving force received by the pushed operation lever is transmitted to the handling mechanism.

A clutch device includes a sector gear, a cam, an electromagnetic solenoid, a first lever, a second lever, a first spring, and a second spring. The cam includes a slide portion. The first lever engages with the electromagnetic solenoid and includes a first restricting portion. The second lever includes a hook and a second restricting portion. The first spring is configured to urge the second lever in a direction in which the first restricting portion and the second restricting portion contact each other. The second spring is configured to, when the electromagnetic solenoid is in a de-energized state, move the first lever. The slide portion of the cam has a surface configured to, when the electromagnetic solenoid is in an energized state, press the hook in a direction opposite to an urging direction of the first spring such that the second restricting portion is separated from the first restricting portion.

A moving-side roller reliably separates from a stationary-side roller so as to enable appropriate document transport. An image reading apparatus causes a roller support member supporting the moving-side roller to come into contact with the stationary-side roller. A contact state and a separation state can be switched. The image reading apparatus includes an external force providing portion to exert a third external force on the roller support member in a direction for restraining warping that is generated in the roller support member by a first external force that a cam exerts on the roller support member and by a second external force that an urging device exerts on the roller support member.

A sheet feeder includes: a wheel for issuing a lowermost sheet out to a sheet processing unit; a grate for spacing the sheet apart from the wheel at a raised position and bringing the sheet into contact with the wheel at a lowered position; and a drive device for driving the grate up and down. The drive device includes: a link mechanism for movably supporting the grate; a spring for urging the grate to the lowered position; a grate raising/lowering cam for periodically driving the grate up/down; and a skip feed cam that is driven by a control device, separately from a drive system of the grate raising/lowering cam, and that, at a timing where reached is a phase at which the grate raising/lowering cam does not put the grate in the raised position, retains the grate at the raised position in order to skip feeding of the sheet.