A method for producing a film and a film winding device are provided. When transferring of the film is slowed for winding of the film to be suspended and after winding of the film is suspended, transferring of the film is accelerated for winding of the film to be resumed. The film has a tension at a first level during a period extending from slowing of transferring of the film to suspending of winding of the film. Alternatively, the film has a tension at a first level during a period extending from a predetermined time point during a period during which winding of the film is suspended to a time point at which the accelerating starts. The first level of the tension is higher than a second level that the tension has immediately before slowing of the transferring of the film starts.

A sheet stacking apparatus is provided. A conveyor unit performs stacking of sheets discharged from a printing apparatus and conveying of stacked sheets. A detection unit detects whether or not the printing apparatus is currently discharging a sheet. A control unit, so as to secure a stacking space for a sheet discharged from the printing apparatus on the conveyor unit, controls a feeding operation of the conveyor unit correspondingly to a period of time over which the detection unit detected that the printing apparatus is discharging a sheet.

A medium processing apparatus includes an intermediate stacker on which media recorded by a recording apparatus are stacked, the recording apparatus including a liquid ejection head which performs recording by ejecting liquid to media and a maintenance apparatus which performs maintenance of the liquid ejection head, and a processor which executes a process on the media received by the intermediate stacker. The medium processing apparatus executes the process after a medium which is last recorded before the maintenance is stacked on the intermediate stacker.

Provided is a plate material feeding device that can achieve reduced power consumption, improve durability, and supply plate material with high precision. A plate material feeding device is provided with a housing, a lower roll, an upper roll, a lower roll support member for supporting the lower roll, an upper roll support member for supporting the upper roll, and a slider movable in the horizontal direction along the upper roll support member, and can feed plate material clamped by the lower roll and the upper roll. A hole is provided in the slider, and a rod is provided in the upper roll support member. By inserting at least part of the rod in the hole in a slidable manner, the upper roll support member can move in the vertical direction when the slider moves in the horizontal direction.

Disclosed is a corrugated paperboard box making machine which comprises a feeding control mode setting unit for setting a feeding control mode to one of a first feeding control mode for controlling a sheet feeding apparatus and a second feeding control mode for controlling the sheet feeding apparatus such that the sheet feeding operation is performed plural times during the period of time in which the printing rotor is rotated 360 degrees, and a control apparatus for controlling the sheet feeding apparatus according to the set feeding control mode. The control apparatus is operable to execute a sheet feeding stop control processing of, when the second feeding control mode is set, controlling the sheet feeding apparatus such that the sheet feeding operation is stopped at least once after execution of the sheet feeding control processing.

Disclosed is a corrugated paperboard box making machine which comprises a feeding control mode setting unit for setting a feeding control mode to one of a first feeding control mode for controlling a sheet feeding apparatus and a second feeding control mode for controlling the sheet feeding apparatus such that the sheet feeding operation is performed plural times during the period of time in which the printing rotor is rotated 360 degrees, and a control apparatus for controlling the sheet feeding apparatus according to the set feeding control mode. The control apparatus is operable to execute a sheet feeding stop control processing of, when the second feeding control mode is set, controlling the sheet feeding apparatus such that the sheet feeding operation is stopped at least once after execution of the sheet feeding control processing.

A control device executes: either a first conveyance change control or a second conveyance change control; and a retraction control when an operation device receives an interruption operation during execution of a specified number stack control. In the first conveyance change control, a sheet conveyance device of a target unit is changed to a relay conveyance state, and the sheet conveyance device of another coupled unit that is present downstream of the target unit in a main conveyance direction is changed to a stack conveyance state. In the second conveyance change control, the sheet conveyance device of another coupled unit that is present upstream in the main conveyance direction is changed to the stack conveyance state. In the retraction control, a lift mechanism of the target unit is caused to execute a mount operation by which a stack tray is moved down to a mount position on a carriage portion.

A sheet feeding device includes a feeding roller pair, a detecting portion, a first changing portion, a second changing portion, and a controller for controlling the first changing portion and the second changing portion. The controller starts a first feeding operation for feeding a sheet toward the obliquely feeding roller pair in a nipping state of the feeding roller pair and then starts a second feeding operation for feeding the sheet for abutting a side end of the sheet against the reference member in the nipping state of the obliquely feeding roller pair. The controller changes, after the first feeding operation is started and before the second feeding operation is started, a start timing of the second feeding operation on the basis of a detection result of a position of the side end of the sheet detected by the detecting portion.

Provided is a printing apparatus that can be downsized while degradation in the print quality is suppressed. To perform skew correction on a second print medium on which printing is to be performed subsequent to a first print medium, a first conveying unit disposed upstream of the printing position where the printing unit performs printing on the print medium is stopped. Then, driving and stopping a third conveying unit disposed downstream of a second conveying unit is controlled, depending on whether the first print medium after printing has already passed by the second conveying unit when the first conveying unit is stopped, the second conveying unit being driven by the same driving source as for the first conveying unit and is disposed downstream of the printing position.

An image forming apparatus to which a first feeding device which does not notify abnormal sheet feeding or a second feeding device which notifies the abnormal sheet feeding is connectable includes a sheet receiving portion, a sheet detector, an image forming unit, and a controller. In a case that the first feeding device is connected to the image forming apparatus, the controller discriminates that the abnormal sheet feeding occurs in the first feeding device when the detector does not detect the sheet at first timing. In a case that the second feeding device is connected to the image forming apparatus, the controller discriminates that the abnormal sheet feeding occurs at the sheet receiving portion when the detector does not detect the sheet at second timing and notification of the abnormal sheet feeding is not provided from the second feeding device.