Abstract: A sheet conveying device includes a sheet feed tray. The sheet feed tray includes a first guide and a second guide. The first guide has a first end portion. The first end portion has a first area located in a central portion in a width direction, and a second area located closer to one end in the width direction than the first area. The first end portion is inclined such that the first area is downstream of the second area in the sheet conveying direction. The second guide has an upper end portion located downstream of the first end portion of the first guide in the sheet conveying direction and above the first end portion. The upper end portion has a third area located in a central portion in the width direction and a fourth area located closer to an end in the width direction than the third area.

Abstract: 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.

Abstract: A sheet conveying device includes a sheet feed tray with a first guide, a main body with a second guide, a guide member disposed at the sheet feed tray, and a contact portion located at the main body. The sheet feed tray is movable in a first direction. The guide member is movable between a protruding position and a withdrawn position. The guide member at the protruding position is disposed downstream of the first guide in a sheet conveyance direction and upstream of the second guide in the first direction such that the guide member overlaps the second guide in the first direction. The guide member at the withdrawn position does not overlap the second guide in the first direction. The contact portion is configured to, as the sheet feed tray moves from the main body, contact and move the guide member from the protruding position toward the withdrawn position.

Abstract: A sheet conveying device includes a sheet feed tray. The sheet feed tray includes a first guide and a second guide. The first guide has a first end portion. The first end portion has a first area located in a central portion in a width direction, and a second area located closer to one end in the width direction than the first area. The first end portion is inclined such that the first area is downstream of the second area in the sheet conveying direction. The second guide has an upper end portion located downstream of the first end portion of the first guide in the sheet conveying direction and above the first end portion. The upper end portion has a third area located in a central portion in the width direction and a fourth area located closer to an end in the width direction than the third area.

Abstract: A sheet conveying device includes a sheet feed tray with a first guide, a main body with a second guide, a guide member disposed at the sheet feed tray, and a contact portion located at the main body. The sheet feed tray is movable in a first direction. The guide member is movable between a protruding position and a withdrawn position. The guide member at the protruding position is disposed downstream of the first guide in a sheet conveyance direction and upstream of the second guide in the first direction such that the guide member overlaps the second guide in the first direction. The guide member at the withdrawn position does not overlap the second guide in the first direction. The contact portion is configured to, as the sheet feed tray moves from the main body, contact and move the guide member from the protruding position toward the withdrawn position.

Abstract: 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.

Abstract: A sheet conveying apparatus includes a first roller, a first guide, a second guide, a second roller, and a third roller. The first guide is configured to guide the sheet conveyed by the first roller and includes a first guide surface and a first edge portion located downstream of the first guide surface in a sheet conveying direction. The second guide, disposed downstream of the first guide, includes a second guide surface and a second edge portion located upstream of the second guide surface. The second roller is disposed downstream of the first roller and above the first roller. The third roller is disposed at a position more proximate to the second guide surface than the second roller. When projected on a cut plane orthogonal to an axis of the third roller, at least of a part of the second edge portion overlaps the third roller.

Abstract: A sheet conveying apparatus includes a first roller, a first guide, a second guide, a second roller, and a third roller. The first guide is configured to guide the sheet conveyed by the first roller and includes a first guide surface and a first edge portion located downstream of the first guide surface in a sheet conveying direction. The second guide, disposed downstream of the first guide, includes a second guide surface and a second edge portion located upstream of the second guide surface. The second roller is disposed downstream of the first roller and above the first roller. The third roller is disposed at a position more proximate to the second guide surface than the second roller. When projected on a cut plane orthogonal to an axis of the third roller, at least of a part of the second edge portion overlaps the third roller.

Abstract: An image forming apparatus includes a motor, a first conveyer and a second conveyer to nip and convey a recordable medium, an urging member to urge one of the first and second conveyers toward the other, a cam member driven by a driving force from the motor to change intensities of pressure in a nipping area, a first gear system to transmit the driving force to the first conveyer, a second gear system to transmit the driving force to the cam member, an engaging member being engaged with a cam gear to rotate integrally and being one of a worm gear and a one-way gear, and a swing gear swingable between a first position, in which the swing gear transmits the driving force to the first gear system, and a second position, in which the swing gear transmits the driving force to the second gear system.

Abstract: An image forming apparatus, including a motor, a first conveyer and a second conveyer to nip and convey a recordable medium, an urging member to urge one of the first and second conveyers toward the other, a cam member driven by a driving force from the motor to change intensities of pressure in a nipping area, a first gear system to transmit the driving force to the first conveyer, a second gear system to transmit the driving force to the cam member, an engaging member being engaged with a cam gear to rotate integrally and being one of a worm gear and a one-way gear and, and a swing gear swingable between a first position, in which the swing gear transmits the driving force to the first gear system, and a second position, in which the swing gear transmits the driving force to the second gear system, is provided.

Abstract: An image forming apparatus including: first to third rotators, rotated in accordance with an image forming operation of an image forming section; a first motor driving the first and third rotators; a second motor driving the second rotator; a first switch switching between a connected state in which a driving force from the first motor is transmitted to the third rotator, and a disconnected state in which the driving force from the first motor is not transmitted to the third rotator; and a control device performing a first rotating process of rotating the first rotator by rotating the first motor in the disconnected state, performing a second rotating process of rotating the second rotator by rotating the second motor, and performing a start timing process of providing a difference between start timings of the first and second rotating processes.

Abstract: An image forming apparatus includes a switchback roller which switches between a normal rotation direction and a reverse rotation direction, first and second gear train for rotating the switchback roller in the normal and reverse rotation directions, respectively, a switching unit including a pendulum gear which is movable among a first engagement position where the pendulum gear is engaged with the first gear train, a second engagement position where the pendulum gear is engaged with the second gear train, and a disengagement position where the pendulum gear is not engaged with the first gear train and the second gear train. The switching unit is switchable among a first mode where the pendulum gear is held at the first engagement position, a second mode where the pendulum gear is held at the second engagement position, and a third mode where the pendulum gear is held at the disengagement position.

Abstract: An image forming apparatus includes a switchback roller which switches between a normal rotation direction and a reverse rotation direction, first and second gear train for rotating the switchback roller in the normal and reverse rotation directions, respectively, a switching unit including a pendulum gear which is movable among a first engagement position where the pendulum gear is engaged with the first gear train, a second engagement position where the pendulum gear is engaged with the second gear train, and a disengagement position where the pendulum gear is not engaged with the first gear train and the second gear train. The switching unit is switchable among a first mode where the pendulum gear is held at the first engagement position, a second mode where the pendulum gear is held at the second engagement position, and a third mode where the pendulum gear is held at the disengagement position.

Abstract: An image forming apparatus including: first to third rotators, rotated in accordance with an image forming operation of an image forming section; a first motor driving the first and third rotators; a second motor driving the second rotator; a first switch switching between a connected state in which a driving force from the first motor is transmitted to the third rotator, and a disconnected state in which the driving force from the first motor is not transmitted to the third rotator; and a control device performing a first rotating process of rotating the first rotator by rotating the first motor in the disconnected state, performing a second rotating process of rotating the second rotator by rotating the second motor, and performing a start timing process of providing a difference between start timings of the first and second rotating processes.

Abstract: A laser printer is equipped with first to fourth motors, and controls independently first to fourth driving portions, respectively. The laser printer does a continuous double-side printing for a preceding paper and a following paper. When the preceding paper on a first surface of which the printing is applied is conveyed to a predetermined position, the laser printer feeds the following paper. When the preceding paper exceeds a sensing range of a paper sensor, the laser printer conveys the preceding paper at a high-speed re-conveyance velocity in a switchback mode. When the feeding of the following paper is done normally, the laser printer conveys the preceding paper to a re-conveyance path while lowering the conveyance velocity to a normal re-conveyance velocity. When an error occurs in the feeding of the following paper, the laser printer stops the conveyance of the preceding paper in the switchback mode.

Abstract: A laser printer is equipped with first to fourth motors, and controls independently first to fourth driving portions, respectively. The laser printer does a continuous double-side printing for a preceding paper and a following paper. When the preceding paper on a first surface of which the printing is applied is conveyed to a predetermined position, the laser printer feeds the following paper. When the preceding paper exceeds a sensing range of a paper sensor, the laser printer conveys the preceding paper at a high-speed re-conveyance velocity in a switchback mode. When the feeding of the following paper is done normally, the laser printer conveys the preceding paper to a re-conveyance path while lowering the conveyance velocity to a normal re-conveyance velocity. When an error occurs in the feeding of the following paper, the laser printer stops the conveyance of the preceding paper in the switchback mode.