A sheet perforating apparatus includes a punch unit configured to punch holes in a sheet from an image processing apparatus. A dust box is below the punch unit and detachably attached to a case. A lid member is attached to the dust box and is displaceable between a closed state, in which the lid member closes an opening of the dust box, and an open state, in which the lid member does not close the opening of the dust box. When in the open state, the lid member is electrically grounded to weaken static electricity of punch chips dropped from the punch unit to the lid member and directs the punch chips towards the opening.

A punching station for arranging one or more penetration elements in or through an edge portion of a relief plate precursor or for arranging one or more perforations in the edge portion. The punching station includes a punching means comprising one or more penetration elements or perforating elements, the punching means configured for arranging the one or more penetration elements or perforating elements through or in an edge portion of the relief plate precursor. An abutment means is aligned with the punching means and configured for forming an abutment for the edge of the relief plate precursor. A detection means is configured to detect at two or more locations along the abutment means whether the edge portion of the relief plate precursor is correctly positioned against the abutment means. A signalling means is configured to communicate a signal in function of the detection by the detection means.

A sheet-processing machine has a shaping device for processing sheets. The shaping device has at least one shaping point. The sheet-processing machine comprises at least one separating device. The at least one separating device is designed to remove at least one remaining piece from at least one sheet of the sheets. The at least one separating device is arranged downstream of the at least one shaping point along a transport path provided for transporting the sheets. At least one inspection device is arranged, downstream of the separating device in the transport direction of the sheets, to determine an actual state of the at least one sheet of the sheets. The invention additionally relates to a method for inspecting at least one remaining part of at least one sheet of sheets, which part has been processed by a shaping device, and to a method for inspecting at least one sheet of sheets.

A sheet processing apparatus includes a puncher, a first sensor positioned upstream of the puncher in the conveyance direction, a second sensor positioned upstream of the first detection position in the conveyance direction, a drive source configured to drive the puncher, a controller configured to control the drive source. The controller executes a control mode including a first process of controlling a rotation speed of the puncher on a basis of a detection result of the second sensor and a second process of controlling the rotation speed of the puncher on a basis of a detection result of the first sensor. In the control mode, the controller does not stop rotation of the puncher in a period between the punching process on the preceding sheet and a punching process on the succeeding sheet.

An object of the present invention is to reduce loads during a punching process and to reduce punching time. A punching blade is provided with a blade edge portion including multiple peaks and multiple valleys formed alternately in a circumferential direction. A blade edge line of the blade edge portion has first areas corresponding to the valleys, second areas extending from the peaks to the valleys, and third areas connecting the first areas and the second areas. In a side view of the blade edge portion, the first areas form curved lines along first arcs having a center point on a punching axis, the second areas form curved lines along second arcs having center points located in areas between the punching axis and the highest points of the peaks, and the third areas form straight lines along common tangents to the first arcs and the second arcs.

A sheet processing apparatus includes: a punching unit configured to punch a sheet conveyed; a movement unit configured to cause the punching unit to move in a direction intersecting with a conveyance direction of the sheet; a detection unit configured to detect a first conveyance position which is a position in a width direction orthogonal to the conveyance direction of the sheet; and a control unit configured to obtain size information of the sheet, determine, based on the size information, a second conveyance position in the width direction when the sheet is conveyed, and by comparing the first conveyance position and the second conveyance position, control whether or not to execute an avoidance process that causes the punching unit to move away from the sheet.

A sheet processing system according to an embodiment includes a tray that supports a sheet on opposite sides of the sheet orthogonal to a conveyance direction of the sheet. The tray includes a first adjustable support and second adjustable support positioned opposite the first adjustable support in the direction orthogonal to the conveyance direction of the sheet. A skew sensor detects a skew angle of the sheet conveyed to the tray. A corner sensor detects positions of each corner on a front end in the downstream direction of the sheet conveyed to the tray. A controller controls movement of the first and second adjustable supports based on the detected skew angle and the detected positions of each corner on the front end of the sheet conveyed to the tray so that the sheet is conveyed to the tray without jamming.

A perforation device for a document processing machine comprising a frame, a support member and a blade member attached to the frame. The support member and the blade member are movable relative to each other. The support member is curved and the perforation device comprises a drive assembly configured to move the blade member and/or the support member in a rocking motion such that only a portion of the blade perforates the sheet wherein the portion of the blade member perforating the sheet moves along the length of the blade member as the rocking motion progresses.

A sheet-processing machine has a shaping device for processing sheets. The shaping device has at least one shaping point. The sheet-processing machine comprises at least one separating device. The at least one separating device is designed to remove at least one remaining piece from at least one sheet of the sheets. The at least one separating device is arranged downstream of the at least one shaping point along a transport path provided for transporting the sheets. At least one inspection device is arranged, downstream of the separating device in the transport direction of the sheets, to determine an actual state of the at least one sheet of the sheets. The invention additionally relates to a method for inspecting at least one remaining part of at least one sheet of sheets, which part has been processed by a shaping device, and to a method for inspecting at least one sheet of sheets.

Implementations of an inkjet based roll with punch-out cards comprising a carrier sheet having a top side and a bottom side, where the carrier sheet comprises a plurality of cut-outs, where for each cut-out, a patch/tape is applied to the bottom-side of the carrier sheet to cover the cut-out, and a card (e.g., a polyester plastic card) is attached to the patch through the cut-out from the top side of the carrier sheet. In some implementations, the card and the patch comprise perforations to create a punch-out card. In some implementations, the patch/tape is made from an opaque material having an adhesive on a first side on which the card is adhered. In some implementations, a method of using the inkjet based roll with punch-out cards comprises cutting a plurality of holes in a roll of a carrier sheet where the carrier sheet has a top side and a bottom side. In some implementations, the method further comprises applying to the bottom-side of the carrier sheet a patch/tape to cover the cut-out. In some implementations, the method further comprises attaching a card (e.g., a polyester plastic card) to the patch through the cut-out from the top side of the carrier sheet. In some implementations, the method further comprises perforating the patch and the card from the bottom-side of the carrier sheet. In the method, in some implementations, UV light is not used to dry the adhesive of the patch/tape.