A transport mechanism for a peripheral device and an operating method including the same are provided. The transport mechanism includes a tray, at least a transport roller, a detector, a trigger component and a processor. The tray includes an opening extending through the tray. The transport roller is rotatably installed in the opening and protruded from the tray to transport a flexible object to move along a transport path. The detector near the tray has a detecting area. The trigger component is located in the opening and spaced apart from the flexible object on the transport path. The flexible object deviated from the transport path presses the trigger component to enter or leave the detecting area and triggers the detector to transmit an abnormal detecting signal. The processor receives the abnormal detecting signal to stop the transport roller.

A medium feeding apparatus includes a mounting section on which a medium to be fed is mounted, a feeding roller configured to feed the medium mounted on the mounting section, a separation roller configured to nip and separate the medium with the feeding roller therebetween, and a regulation section disposed downstream of the nipping position between the feeding roller and the separation roller, the regulation section being configured to regulate the contact of the medium to be fed and the separation roller by coming into contact with the medium from the side of the separation roller.

A medium feeding apparatus includes a mounting section on which a medium to be fed is mounted, a feeding roller configured to feed the medium mounted on the mounting section, a separation roller configured to nip and separate the medium with the feeding roller therebetween, and a regulation section disposed downstream of the nipping position between the feeding roller and the separation roller, the regulation section being configured to regulate the contact of the medium to be fed and the separation roller by coming into contact with the medium from the side of the separation roller.

An image forming device includes an image forming unit to form an image on a work, a conveyance unit to convey the work in a predetermined conveyance direction, a conveyance guide member, a suction unit, and a suction control unit. The conveyance guide member is a plate-shaped member which has a plurality of suction holes and guides conveyance of the work by the conveyance unit from below. The suction unit includes a suction device which generates suction air by sucking air in a space on an upper side of the conveyance guide member via the plurality of suction holes, and closely contacts the work to the conveyance guide member by the suction air. The suction control unit changes a sucking force of the suction device according to a length in the work width direction of the work guided by the conveyance guide member.

A sheet conveyance apparatus includes a first guide plate, a second guide plate, an operation portion provided on the second guide plate, a holding portion configured to hold the second guide plate at a second position, a door being provided to be pivotable between an open state and a close state, a releasing portion configured to abut with the operation portion on the second guide plate positioned at the second position along with a move of the door from the open state to the close state and release the second guide plate held by the holding portion, a pressing portion configured to press the operation portion such that the second guide plate is positioned at a first position, a retraction portion configured to retract the pressing portion from a moving locus of the operation portion in moving the second guide plate from the first position to the second position.

While the first opening and closing member is moved from the first closed position to the first opened position, a force transmitted to the second opening closing member by the first member interfering with the second member pivots the second opening and closing member from the second closed position toward the second opened position. While the first opening and closing member is moved from the first opened position to the first closed position, the second member retracts from the movement locus of the first member by interference of the first member with the second member, and the first opening and closing member is configured to move to the first closed position in a state where the second opening and closing member is positioned at the second closed position.

A sheet-processing machine includes a turning device. Sheets can be conveyed, by a sheet conveyor system, from a sheet guide cylinder in the turning device, and can be conveyed in a sheet conveyor direction on a sheet conveyor path. A sheet guide element is provided beneath or along the sheet conveyor path. A deionization device is assigned to the sheet guide element. The deionization device can provide positive and negative ions.

A sheet-processing machine includes a turning device. Sheets can be conveyed, by a sheet conveyor system, from a sheet guide cylinder in the turning device, and can be conveyed in a sheet conveyor direction on a sheet conveyor path. A sheet guide element is provided beneath or along the sheet conveyor path. A deionization device is assigned to the sheet guide element. The deionization device can provide positive and negative ions.

A transportation portion includes an apparatus body, a cover, first and second path formation portions, and a movement portion. The apparatus body has a transportation path including a downward path and an upward path having portions located at the same level in the Z direction. The cover covers and uncovers the transportation path. The first path formation portion is movable to a first position and to a second position. The second path formation portion defines the upward path and defines the downward path with the first path formation portion. The movement portion moves the first path formation portion in response to opening or closing of the cover. The first path formation portion is positioned in a movement area during a closed state. The movement portion moves the first path formation portion to the second position when the cover is opened and to the first position when the cover is closed.

A transport portion includes a device main body, an upper guide portion, and a lower guide portion. In the device main body, a descending path and an ascending path overlap each other in a Z direction. The upper guide portion is configured to be moved outward with respect to the device main body and is positioned above the descending path and the ascending path in a state in which the upper guide portion is stored. The lower guide portion forms the descending path and the ascending path together with the upper guide portion. The lower guide portion includes a first path forming member and a second path forming member. The first path forming member forms the descending path and at least partially overlaps a moving area of the upper guide portion at a first position and does not overlap the moving area at a second position.