A conveyance apparatus according to the disclosure includes a conveyance unit that conveys a sheet, a flapper movable between a first position and a second position, a flapper moving unit that moves the flapper to the first position when power is supplied, a door to open a predetermined conveyance path and a second conveyance path, a detection unit that detects an occurrence of an abnormal state relating to the conveyance apparatus, and a control unit that, in a case where the detection unit detects the occurrence of the abnormal state while a sheet is conveyed to the first conveyance path by the conveyance unit and the flapper is in the first position, stops a sheet conveyance operation of the conveyance unit and inhibits the flapper from moving to the second. position by continuing to supply power to the flapper moving unit.

A lamination device that laminates a plurality of types of workpieces includes supply mechanisms that supply the workpiece to each of supply positions, a movement mechanism including a stator of a linear motor having a predetermined traveling track and a mover of a linear motor that is movable between a plurality of the supply positions along a traveling track, and a controller that controls at least the mover. The mover includes a holding unit that holds the workpiece supplied to the supply positions, and a lamination stage for lamination the workpiece. The controller corrects a relative position of the workpiece with respect to the lamination stage and controls the mover to laminate the workpiece whose relative position is corrected on the lamination stage while the holding unit holds the workpiece supplied to the supply positions and moves to and stops at a next one of the supply positions.

In an example, a print media transport apparatus comprises a plurality of pallets having a self-propulsion mechanism, and being to support print media. The pallets may circulate on an endless track comprising a printing zone, a descending zone and an ascending zone. A controller may control the self-propulsion mechanisms of the pallets such that a pallet on the descending zone is at least partially supported by another pallet which is ahead on the track, and a pallet on the ascending zone is at least partially driven by pallet which follows on the track.

In an example, a print media transport apparatus comprises a plurality of pallets having a self-propulsion mechanism, and being to support print media. The pallets may circulate on an endless track comprising a printing zone, a descending zone and an ascending zone. A controller may control the self-propulsion mechanisms of the pallets such that a pallet on the descending zone is at least partially supported by another pallet which is ahead on the track, and a pallet on the ascending zone is at least partially driven by pallet which follows on the track.

A solenoid device has a solenoid and a control portion. The solenoid has a body, a plunger, an attracting coil, a retaining coil, and a biasing member. The plunger is arranged selectively either in an attracted position, pulled into the body, or in a returning position, protruding out of the body. Fed with a voltage, the attracting coil generates an attracting force causing the plunger to move from returning position to attracted position. Fed with a voltage, the retaining coil generates a retaining force, weaker than the attracting force, causing the plunger to move to attracted position. The biasing member biases the plunger toward returning position. The control portion controls operation of the solenoid. When moving the plunger from returning position to attracted position, the control portion first starts applying the voltage to the retaining coil and then starts applying the voltage to the attracting coil.

An image forming apparatus includes: a main housing; a transfer roller rotatable about an axis extending in a first direction; a fixing device; a movable chute positioned between the transfer roller and the fixing device in a conveying direction; and a solenoid actuator. The movable chute is configured to guide the sheet, and is movable between: a first position; and a second position at which a downstream end in the conveying direction of the movable chute is positioned further downward relative to the downstream end of the movable chute positioned at the first position. The solenoid actuator is configured to cause the movable chute to move. The main housing includes: a first frame positioned further toward one side in the first direction relative to the movable chute and supporting the solenoid actuator; and a second frame positioned further toward another side in the first direction relative to the movable chute.

A sheet conveyance device includes a pair of separable contact rollers configured to convey a sheet, a contact/separation mechanism configured to support the pair of separable contact rollers in such a manner that the pair of separable contact rollers are able to come into separable contact with each other, and a solenoid configured to operate the contact/separation mechanism. The solenoid is driven so that the contact/separation mechanism causes the pair of separable contact rollers to come into pressure contact with each other, and driving of the solenoid is cancelled so that the contact/separation mechanism causes the pair of separable contact rollers to be separated from each other. Pulse width modulation duty control is performed on the solenoid while the pair of separable contact rollers are in pressure contact with each other when a plurality of the sheets are conveyed one by one at an interval.

A solenoid device includes a solenoid having a plunger that is configured to perform a displacement operation in a first direction in which the plunger is retracted into a solenoid main body and in a second direction in which the plunger protrudes from the solenoid main body; a frame with which the solenoid is provided; and a contact section that the plunger comes into contact with when the plunger moves in the second direction, wherein the solenoid main body is attached to the frame via a first attachment section and the contact section is attached to the frame via a second attachment section.

An electrode stacking apparatus includes a stator with a horizontally installed main surface and multiple coils arranged under the main surface. A movable unit for stacking work includes a first mover that is movable above the main surface by magnetic levitation, an electrode holding unit, and a driving mechanism. The electrode holding unit is configured to press, from above, the base on top of the first mover and the sheet-type electrodes fed on the base's top surface. The driving mechanism drives the electrode holding unit by an external force acting thereon. The movable unit for operation work includes a second mover which can move above the main surface and an operation unit which operates the driving mechanism. A control unit is configured to control movements of the movable unit for stacking work and the movable unit for operation work by adjusting an amount of current flowed through the coils.

In an example, a print media transport apparatus comprises a plurality of pallets having a self-propulsion mechanism, and being to support print media. The pallets may circulate on an endless track comprising a printing zone, a descending zone and an ascending zone. A controller may control the self-propulsion mechanisms of the pallets such that a pallet on the descending zone is at least partially supported by another pallet which is ahead on the track, and a pallet on the ascending zone is at least partially driven by pallet which follows on the track.