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.

According to aspects of the present disclosure, there is provided a tray swinging mechanism including a document tray. A movable plate of the document tray is configured to be swingable about a tray shaft and extends leftward. A lifter is configured to be swingable about a lifter shaft extending in the front-rear direction at a position different from the tray shaft. On a lower surface of the movable plate, a cam surface configured to contact a tip of the lifter is formed. The cam surface includes a parallel part parallel to an upper surface of the movable plate and a curved part spaced from the upper surface farther toward a right side. According to a shape of the cam surface, each time the lifter is rotated by a particular angle, the tip of the movable plate moves by a particular amount.

According to one embodiment, a sheet conveying device includes a tray, a pickup roller, a movement mechanism, a holder, a biasing unit, and a detecting mechanism. The movement mechanism moves the tray between a raised position and a lowered position. The raised position is a position where sheets come into contact with the pickup roller. The holder holds the pickup roller so that the pickup roller is displaceable when pushed up by the sheets. The biasing unit applies a biasing force to the holder pushing down the pickup roller. The detecting mechanism detects when the sheets push up the pickup roller. The detecting mechanism includes a detection unit and a sensor. The detection unit is switchable between a reference position and a detection position according to displacement of the holder accompanying the movement of the tray. The sensor detects when the detection unit reaches the detection position.

A folding device includes a conveying path, a placement portion, a through portion, a first folding member, a second folding member, a rotational driving unit, a rotational position detecting mechanism, a signal receiving unit, and a rotational drive control unit. The rotational drive control unit, when the signal receiving unit receives a signal, determines whether the first folding member is in a state of moving from an initial position to a protruded position or in a state of moving to the opposite direction, and, in a case of being determined to be in the state of moving from the initial position to the protruded position, controls the rotational driving unit to reverse the direction of rotational drive, and in a case of being determined to be in the state of moving to the opposite direction, controls the rotational driving unit to maintain the direction of rotational drive.

In some examples, a sheet processing machine includes at least one infeed system including at least one transport means including at least one upper holder and at least one lower holder. The at least one transport means can be and/or is arranged in at least three states: a maximally closed state corresponding to a minimal distance, a minimally closed state corresponding to a maximal distance, and an at least one mean state corresponding to at least one mean distance between at least one upper holding surface at least of the respective upper holder, and at least one lower holding surface of the lower holder of the at least one transport means that is assigned to the respective upper holder. During a machine cycle, the at least one transport means has each of the minimally closed state, the maximally closed state, and the at least one mean state at least once.

A driven gear is relatively movable to a first support position and to a second support position on a support member. When a first gear rotates in a first direction, the driven gear rotates at the first support position in conjunction with rotation of the first gear to permit the rotation of the driven gear. When the first rotates in a second direction opposite to the first direction, the driven gear moves to the second support position under a force received from the gear in an area where the driven gear meshes with the first gear. Then, at the second support position, the driven gear is locked on a locking member and thus stopped, preventing the first gear from rotating in the second direction.

An imaging device having a door-actuated feed roll separator mechanism. A pair of opposed panels of a frame of the imaging device are positioned parallel to a media path. A feed roll pair in the media path has a drive roll fixedly and rotatably mounted between the panels and a backup roll translateably mounted between the panels. A pair of cam followers are rotatably mounted to the backup roll. The backup roll is biased against the drive roll forming a feed nip. A door pivotally mounted along a bottom end to the frame substantially covers the media path. A pair of door-mounted, spring-biased actuators engage with the pair of cam followers. With the door lowered, the cam followers rotate with a camming surface thereon contacting the drive roll, translating the backup roll away from the drive roll and opening the feed nip to allow for removal of jammed media.

Provided is a cap unit that can prevent or suppress collision between the drive gear and intermittent gear when the drive gear and intermittent gear begin to mesh. A cap unit 25 has a moving mechanism 28 that moves a cap 26. The moving mechanism 28 has an intermittent cam gear 36 with a cam channel 43; a drive gear 35; and a cap holder 45. The cap holder 45 includes a holding member 48 that holds the cap 26; a cam follower pin 49; a pin support mechanism 50 that supports the cam follower pin 49; and a coil spring 51 that urges the cam follower pin 49 toward the bottom 43a of the cam channel 43. A slope 57 is disposed to the bottom 43a of the cam channel 43. The cam follower pin 49 is on the slope 57 when meshing of the intermittent cam gear 36 and drive gear 35 is disengaged, and the intermittent cam gear 36 turns in conjunction with the cam follower pin 49 moving on the slope 57 due to the urging force of the coil spring 51.

A sheet feeder includes a sheet platen, a pickup roller, a feeding roller, a regulating portion, a driving mechanism, a feeding control unit, a sheet sensor, and a determination processing unit. The feeding control unit executes a feeding operation by rotationally driving the pickup roller and the feeding roller in a state where the regulating portion is located at a retreating position. The sheet sensor is located at a downstream side in the feeding direction of the feeding roller. The determination processing unit determines whether the sheet feeding has succeeded or not based on a signal from the sheet sensor. After a start of the feeding operation, when the determination processing unit determines that the sheet feeding has failed, the feeding control unit once moves the regulating portion located at the retreating position to the abutting position and then executes the feeding operation again.

A sheet conveyance apparatus includes a rotary drive member configured to rotate by receiving transmission of driving force from a driving source, a driven rotary member arranged with a predetermined distance in a sheet conveyance direction from the rotary drive member, an endless belt member supported on the rotary drive member and the driven rotary member, and configured to be rotated by a rotation of the rotary drive member, and a guide member configured to guide a sheet conveyed by the belt member. The guide member is mounted to a shaft configured to support the rotary drive member, and the rotary drive member is supported on the shaft in a rotatable manner with respect to the shaft.