Provided in a paper sheet feeding apparatus and a box making machine are: a plurality of wheels capable of supplying a sheet by coming into contact with a lower surface of the sheet; a grate liftable and lowerable to an ascending position positioned above upper edges of the plurality of wheels and a descending position positioned below the upper edges of the plurality of wheels; a drive motor; an elevating device capable of lifting the grate to the ascending position by rotating the drive motor in one direction and capable of lowering the grate to the descending position by rotating the drive motor in the other direction; and a control device capable of adjusting an amount by which the grate is lifted and lowered by the elevating device by controlling the drive motor.

An identification apparatus for identifying a type of a sheet obtains, by a sensor, a plurality of parameters including a parameter concerning a characteristic of the sheet, and identifies the type of the sheet based on a result of inputting the plurality of parameters obtained by the sensor to an estimation model obtained by machine learning using, as input data, parameters corresponding to the parameters which are obtained by the sensor and include a first parameter and a second parameter classified in accordance with whether a value tends to change due to a predetermined element, and also using, as supervised data, a type of a sheet if the parameters are obtained. The estimation model includes a first partial model to which the first parameter is input and the second parameter is not input, a second partial model to which the second parameter is input and the first parameter is not input, and a third partial model that outputs a result concerning the type of the sheet based on an output from the first partial model and an output from the second partial model.

According to an embodiment, a processing method simulates conveyance of at least one web sheet conveyed in a conveying direction along a conveyance path from an unwinder to a winder. The processing method sets a conveyance velocity along the conveying direction as a velocity of a distal end node, which is an analysis node located at a distal end of the web sheet in the conveying direction. After setting the conveyance velocity to the distal end node, the distal end node is deleted based on a movement of the distal end node by a prescribed distance. The processing method updates the distal end node to an analysis node newly located at a distal end of the web sheet based on the deletion of the distal end node.

According to an embodiment, a processing method simulates conveyance of at least one web sheet conveyed in a conveying direction along a conveyance path from an unwinder to a winder. The processing method sets a conveyance velocity along the conveying direction as a velocity of a distal end node, which is an analysis node located at a distal end of the web sheet in the conveying direction. After setting the conveyance velocity to the distal end node, the distal end node is deleted based on a movement of the distal end node by a prescribed distance. The processing method updates the distal end node to an analysis node newly located at a distal end of the web sheet based on the deletion of the distal end node.

A feeding device includes an accommodation unit that accommodates paper, a feeding tray on which the paper is placed in the accommodation unit and that is controlled so as to be lifted and lowered in a case of being replenished with the paper, and a processor configured to determine a lifting and lowering speed of the feeding tray according to an operation by a user, and perform control such that a lifting and lowering speed of the feeding tray becomes slower than the determined lifting and lowering speed in a case of a state where the determined lifting and lowering speed of the feeding tray is unable to be realized.

A sheet conveyance apparatus includes a sheet conveyor configured to convey a sheet, a guide configured to form a conveyance path through which the sheet is conveyed by the sheet conveyor, and a sensor disposed on a same side as the guide with respect to the conveyance path. The guide includes a retracted portion disposed over a first region in a sheet width direction perpendicular to a sheet conveyance direction, the retracted portion being retracted with respect to a second region of the guide in the sheet width direction so as not to come into contact with the sheet passing through the conveyance path, the first region including a detection region of the sensor in the sheet width direction, the second region being a sheet passing region of the sheet in the sheet width direction excluding the first region.

A sheet conveyer having a sheet tray, a tray-driving mechanism, a conveyance guide, a feed roller, a separator, a conveyer, a conveyer-driving mechanism, a controller, and a sheet sensor to detect sheets on the sheet tray, is provided. The conveyer-driving mechanism includes a transmission-active portion and a transmission-passive portion. A conveying velocity to convey the sheets by the conveyer is higher than a conveying velocity to convey the sheets by the feed roller and the separator. The transmission-active portion and the transmission-passive portion are rotatable about a transmission axis. The transmission-passive portion rotates passively by being pushed by the transmission-active portion. After the sheet sensor detects absence of the sheets, and before the transmission-passive portion starts rotating passively, the controller conducts a specific action to move the sheet tray downward by controlling the tray-driving mechanism.

An index tab forming system sequentially forms index tabs to a plurality of sheets without replacing a blade die. The index tab forming system includes a rotary die cutter 5 on which a long blade die that can form an index tab at any position of the sheet in the conveyance direction is mounted. Furthermore, the index tab forming system includes a rotational speed calculation unit configured to calculate the rotational speed of a conveyance roller pair 37 based on the rotational position of a die cut roller 50, a sheet position detection signal provided by a sheet detection sensor 40, the number of times of sheet conveyance, and a shift distance between respective index tabs and a conveyance roller control unit configured to control the rotational speed of the conveyance roller pair 37 based on the calculated rotational speed.

An index tab forming system sequentially forms index tabs to a plurality of sheets without replacing a blade die. The index tab forming system includes a rotary die cutter 5 on which a long blade die that can form an index tab at any position of the sheet in the conveyance direction is mounted. Furthermore, the index tab forming system includes a rotational speed calculation unit configured to calculate the rotational speed of a conveyance roller pair 37 based on the rotational position of a die cut roller 50, a sheet position detection signal provided by a sheet detection sensor 40, the number of times of sheet conveyance, and a shift distance between respective index tabs and a conveyance roller control unit configured to control the rotational speed of the conveyance roller pair 37 based on the calculated rotational speed.

A sheet printer includes a sheet conveyor assembly including a first conveyor with a first holding device configured for exerting a holding force on a sheet proportional to a coverage of the sheet on the first conveyor and a second conveyor upstream of the first conveyor including a second holding device configured for holding and releasing the sheet, a print head assembly positioned over the first conveyor, a detector assembly for sensing the transport of the first conveyor, a controller storing on its memory a sheet media catalogue and configured to control a release timing of the second holding device for releasing the sheet partially engaged by the first conveyor based on a media type parameter selected from the media catalogue and to control the print head assembly to commence printing the sheet based on transport information from the detector assembly.