In a cross section shape of the toothed part, in gaps formed between a recesses and a projections when a upper toothed part and a lower toothed part are engaged without a bundle of recording materials, when the distances between the recesses and the projections in a pressing direction of the toothed part at positions where the distances from a center lines of the projections in a direction perpendicular to the pressing direction of the toothed part to the surfaces of the projections in the direction perpendicular to the pressing direction of the toothed part are a distance L1 are H1, and the distances between the recesses and the projections at positions where the distances from the center lines to surfaces of the projections in the direction perpendicular to the pressing direction of the toothed part are H2, a combination of L1 and L2 satisfies H1 is smaller than H2.

The present invention is to provide a sheet processing device including: a receiving tray capable of accommodating therein a sheet having, at a part thereof, a protruding portion and a sheet not having the protruding portion in a mixed state; a first binding member that binds the accommodated sheet bundle at a substantially center thereof in a sheet conveying direction; a folding section that folds the sheet bundle bound by the first binding member in two; and a second binding member that binds protruding portions of the sheet bundle folded by the folding section on a fore edge side of the sheet bundle. With this configuration, the fore edge side of the folded and saddle-stitched sheet bundle can be bound by temporary binding. Thus, a sheet processing device capable of ensuring the security of a saddle-stitched sheet bundle can be provided.

According to one embodiment, a sheet binding device includes a tape support base, a tape holder, and a first displacement mechanism. The tape support base supports a tape. The tape holder is movable in a first direction. The first displacement mechanism displaces the tape holder from a first position that is a position away from the tape to a second position at which the tape holder is capable of coming into contact with the tape when the tape holder moves toward the tape support base and receives the tape.

Provided is a recording material processing apparatus including: a first binding processing unit that is provided to be capable of moving on a predetermined movement route and is configured to perform a binding process on a recording material; and a second binding processing unit that is installed on the predetermined movement route, is configured to perform the binding process on the recording material, and is configured to withdraw from the movement route by receiving force from the first binding processing unit which moves along the movement route.

A method of transporting single-cut sheets cut from a continuous sheet for absorbent articles includes transporting the sheets by bonding an upstream end of each sheet to an outer surface of a first rotating body by adhesive; and transporting the sheets by holding the sheets on an outer surface of a second rotating body rotating faster than the first body, the sheets being transported from the first body in a state in which the upstream end of each sheet is on the first body, a portion of each sheet on the second body sliding relative to the outer surface of the second body such that each sheet is transported at the peripheral speed of the first body, after the adhesive is separated and the upstream end moves to the second body, the second body transporting the sheets at the peripheral speed of the second body.

Various embodiments of an adhesive prediction system are disclosed. The system can include a non-transitory computer-readable medium including instructions that, when implemented on a processor, cause the processor to perform operations including receiving a plurality of input variables, an input variable of the plurality of input variables corresponding to at least one of an adhesive and a substrate to be used in a tape application process; performing an analysis of input variables and output variables generated during a test of the tape application process (1310) to generate a predictive data model (1320); and storing the predictive data model.

A medium processing apparatus includes a liquid applier, a post-processing device, and a controller that is circuitry. The liquid applier applies liquid on at least one medium. The post-processing device performs a combination of various types of post-processes including a liquid application crimp binding and a crimp binding and a various types of bindings including a dual binding, a parallel binding, and an oblique binding, on a bundle of media including the at least one medium for a number of times. The circuitry is to change the number of times of the post-process according to the combination of the various types of the post processes and the various types of bindings, to be performed.

A medium processing apparatus includes a liquid applier, a post-processing device, a liquid storage unit, a liquid detector, and circuitry. The liquid applier applies liquid to a part of at least one medium. The post-processing device performs a given process on a bundle of media. The liquid storage unit stores the liquid. The liquid detector detects the liquid in the liquid storage unit. The circuitry is to determine whether to cause the liquid applier to apply the liquid on the at least one medium based on a detection result of the liquid detector, and set a number of times of application of the liquid to be equal to or less than a given number of times of application of the liquid when the liquid detector does not detect the liquid in the liquid storage unit.

A sheet conveying device includes: a conveyor to convey a sheet in a conveyance direction; a sound collector to collect sound generated by a conveyance of the sheet by the conveyor, the sound collector movable in a sheet width direction orthogonal to the conveyance direction; and a circuitry configured to determine whether an abnormal conveyance occurs based on the sound collected by the sound collector.

A sheet processing apparatus includes a sheet tray on which one or more sheets to be processed are placed, an adhesive applying unit having an end portion that faces the sheet tray and holds an adhesive material and configured to move towards the sheet tray up to a position at which the end portion is in contact with or proximate to a sheet on the sheet tray and apart from the sheet tray, a pressing member configured to move into and out of a moving path of the adhesive applying unit and a control unit. The control unit is configured to cause the pressing member to be in the moving path of the adhesive applying unit when the pressing member is moved towards the sheet tray, such that the pressing member is pressed against a sheet on the sheet tray by the adhesive applying unit.