Abstract: A sheet folding device includes: a sheet receiving unit with a pair of guide plates to restrict opposite sides of one or a plurality of stacked sheets and a striking portion to be struck by leading ends of the introduced sheets; a roller group to introduce the sheets into the sheet receiving unit, strike the introduced sheets on the striking portion to form a bent portion on the sheets, and nip and fold the formed bent portion and discharge the sheets from the sheet receiving unit; and a curve forming unit to form a curved portion on the sheets, at a position closer to the leading ends of the sheets than a position where the bent portion to be folded by the roller group is formed, the curved portion being curved in a width direction perpendicular to a direction of transfer of the sheets.

Abstract: A sealed letter formation system folds an envelope sheet while enclosing a content, forms an envelope having the content enclosed therein, and seals the envelope. The sealed letter formation system includes a folder and a positioner. The folder folds the envelope sheet at only one place before enclosing the content. The positioner is provided downstream in a conveying direction of the folder to position the envelope sheet in a conveyance perpendicular direction perpendicular to the conveying direction of the envelope sheet before folding the envelope sheet while enclosing the content.

Abstract: There is provided a temperature detection unit 28 configured to detect an activation condition temperature that is the condition temperature causing activation of a remoistenable adhesive that is coated by water, an integrated storage unit 2 configured to store an attachment maintenance time table that is the attachment maintenance time selection condition for determining the attachment maintenance time T for the remoistenable adhesive depending on the activation condition temperature detected by the temperature detection unit 28, and an integrated control unit 3 configured to drive and control the discharge unit 26 of the enclosing and sealing apparatus 20 to thereby satisfy the attachment maintenance time T determined in response to the activation condition temperature detected by the temperature detection unit 28.

Abstract: A sheet folding device includes: a sheet receiving unit with a pair of guide plates to restrict opposite sides of one or a plurality of stacked sheets and a striking portion to be struck by leading ends of the introduced sheets; a roller group to introduce the sheets into the sheet receiving unit, strike the introduced sheets on the striking portion to form a bent portion on the sheets, and nip and fold the formed bent portion and discharge the sheets from the sheet receiving unit; and a curve forming unit to form a curved portion on the sheets, at a position closer to the leading ends of the sheets than a position where the bent portion to be folded by the roller group is formed, the curved portion being curved in a width direction perpendicular to a direction of transfer of the sheets.

Abstract: There is provided a temperature detection unit 28 configured to detect an activation condition temperature that is the condition temperature causing activation of a remoistenable adhesive that is coated by water, an integrated storage unit 2 configured to store an attachment maintenance time table that is the attachment maintenance time selection condition for determining the attachment maintenance time T for the remoistenable adhesive depending on the activation condition temperature detected by the temperature detection unit 28, and an integrated control unit 3 configured to drive and control the discharge unit 26 of the enclosing and sealing apparatus 20 to thereby satisfy the attachment maintenance time T determined in response to the activation condition temperature detected by the temperature detection unit 28.

Abstract: A sealed letter preparing apparatus 1 includes a printing unit 2 that performs printing on an envelope and an enclosure alternately, and an enclosing-sealing unit 3. The enclosing-sealing unit is configured to carry the printed envelope by the first carrier passage 10, carry the printed sheet as the enclosure by the second carrier passage 20, enclose the enclosure in the envelope by the envelope opening-enclosing means 60 at an intersection position of the both passages, and seal the envelope by a sealing means 70 so as to discharge the envelope into a discharge stocker 44. The sealed letter preparing apparatus has a simple and compact structure with less incidence of enclosing error, which is suitable for preparation of one-to-one direct mail.

Abstract: It is an object to manufacture a printing plate for an anastatic printing method that performs printing by transferring ink applied to convexities of a printing image to a printing medium. Holes on a surface of a porous sheet having plural three-dimensionally communicated holes are blocked by a coating layer. A printing image composed of concavities and convexities are formed on the sheet by driving a TPH while interposing and carrying the sheet between a TPH3 and a platen roller. Since the concavities are easily formed by fusing and contracting the sheet having open-cell foams by heating, plate-making is simple. Since surfaces of the convexities are covered by the coating layer, ink does not permeate inside even when the ink is applied for printing and it is possible to accurately adjust an amount of ink, thereby achieving a high-quality print matter.

Abstract: There are disclosed a stencil printing ink having an ink thread-forming length when a 15 mm diameter chrome steel ball is pulled out of the ink at 150 mm/s of 30 mm or longer at 23° C.; and a stencil printing ink comprising a water-based ink comprising an unsaturated straight-chain carboxylic acid-based water-soluble polymer.

Abstract: A stencil clamping portion which clamps a tip end of a stencil sheet on an outer peripheral wall of a drum is provided, and the stencil sheet clamped by the stencil clamping portion is wound and attached around the outer peripheral wall. The stencil clamping portion includes an insertion slit which is provided along an axial direction of the drum and open to a surface of the outer peripheral wall, and an elastic sheet which pinches the stencil sheet inserted into the insertion slit. The tip end of the stencil sheet is inserted into the insertion slit by an insertion blade, and pinched by the elastic sheet.

Abstract: A stencil printing machine includes a drum on which a stencil sheet is mounted, and a pressure roller which presses a print sheet fed between the drum and the pressure roller and rotates together with the drum. The print sheet is fed from an upstream side of the pressure roller in a conveying direction, an image is transferred from the stencil sheet onto the fed print sheet in a process where the print sheet passes between the drum and the pressure roller, and the print sheet on which the image is transferred is discharged to a downstream side of the pressure roller in the conveying direction.

Abstract: A stencil printing machine includes a rotatable drum having an outer circumferential wall formed by an ink impermeable member, a stencil clamping part for clamping a leading end of a stencil sheet, an ink supply unit having an ink supply opening for supplying a surface of the outer circumferential wall with ink, a press roll for pressing a printing paper against the outer circumferential wall of the drum, an ink recovery unit having an ink recovery opening formed on a downstream side of a maximum printing area in a printing direction to collect ink flowing into the ink recovery opening by suction, the maximum printing area being defined on the outer circumferential wall, and a press unit for pressing the stencil sheet onto the outer circumferential wall of the drum and a control unit for controlling respective operations of the main motor, the ink recovery unit and the press unit.

Abstract: A stencil printing method employs a stencil printing machine comprising: a drum which is rotatable and has a outer peripheral wall formed by an ink impermeable member and in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supply device which has an ink supply unit provided on the outer peripheral wall of the drum and supplies ink on the surface of the outer peripheral wall from the ink supply unit; and a pressure roller which presses a fed print medium onto the outer peripheral wall; the method comprising: a step of mounting a stencil sheet on the drum; a step of plate-making the stencil sheet; and a step of transferring a water-based ink to a print medium by making the water-based ink pass through perforations of the stencil sheet.

Abstract: A stencil printing machine has a rotatable printing drum including an outer peripheral wall of ink impermeable material. A stencil paper is mounted on the surface of the outer peripheral wall. An ink supplying mechanism includes an ink supplying unit in the outer peripheral wall of the printing drum. The ink supplying mechanism supplies ink from the ink supplying unit to the surface of the outer peripheral wall. A pressure roller presses a fed print sheet against the outer peripheral wall. An ink recovering mechanism recovers ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum. A pressing mechanism presses the stencil paper against the outer peripheral wall of the printing drum.

Abstract: A stencil printing machine includes a rotatable drum having an outer circumferential wall formed by an ink impermeable member, a stencil clamping part for clamping a leading end of a stencil sheet, an ink supply unit having an ink supply opening for supplying a surface of the outer circumferential wall with ink, a press roll for pressing a printing paper against the outer circumferential wall of the drum, an ink recovery unit having an ink recovery opening formed on a downstream side of a maximum printing area in a printing direction to collect ink flowing into the ink recovery opening by suction, the maximum printing area being defined on the outer circumferential wall, and a press unit for pressing the stencil sheet onto the outer circumferential wall of the drum and a control unit for controlling respective operations of the main motor, the ink recovery unit and the press unit.

Abstract: There is provided a thermal recording apparatus that transports a thermal recording medium in a sub-scanning direction in close contact with a thermal print head including plural heating elements juxtaposed in a main scanning direction, and performs thermal recording on the thermal recording medium by arbitrarily driving the heating elements, including: a sucking unit that is provided in the vicinity of the heating elements, and sucks and transportably holds the thermal recording medium, and a transporting unit that is provided in the downstream side of the heating elements with respect to a transportation direction of the thermal recording medium, and transports the thermal recording medium, wherein the thermal recording apparatus transports the thermal recording medium in close contact with the heating elements by transporting the thermal recording medium by the transporting unit while sucking it by the sucking unit, and performs thermal recording on the thermal recording medium by arbitrarily driving the h

Abstract: A stencil printing machine includes a rotatable printing drum including an outer peripheral wall of ink impermeable material. A stencil paper is mounted around the surface of the outer peripheral wall. An ink supplying mechanism includes an ink supplying unit in the maximum printing area of the outer peripheral wall of the printing drum and causes ink to be supplied from the ink supplying unit to the surface of the outer peripheral wall. A pressure roller presses a fed print sheet against the outer peripheral wall.

Abstract: A stencil printing machine has a rotatable printing drum including an outer peripheral wall of ink impermeable material. A stencil paper is mounted on the surface of the outer peripheral wall. An ink supplying mechanism includes an ink supplying unit in the outer peripheral wall of the printing drum and supplies ink to the surface of the outer peripheral wall. A pressure roller presses a fed print sheet against the outer peripheral wall. When an initial printing operation is performed after a stencil paper is mounted on the printing drum, the ink supplying mechanism is caused to supply the surface of the outer peripheral wall, in advance, with an amount of ink which is larger than an amount of ink which is supplied for second and proceeding printing operations.

Abstract: A stencil printing machine, which includes: a drum which is freely rotatable and has an outer peripheral wall formed of an ink impermeable member, in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supplying device for supplying, to the surface of the outer peripheral wall, an ink guided from an ink tank; an ink recovery device for recovering, from an ink recovery portion, an extra ink on the surface of the outer peripheral wall; and a pressure roller which presses a print medium to the outer peripheral wall. The ink tank includes a main tank portion where unused ink is stored, and a sub-tank portion where the ink recovered by the ink recovery device is stored. The ink supplying device preferentially supplies the ink in the sub-tank portion.

Abstract: A stencil printing machine includes: a drum which is freely rotatable and has an outer peripheral wall formed of an ink impermeable member, in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supply device which has an ink supply port on the outer peripheral wall of the drum, and supplies ink to the surface of the outer peripheral wall from the ink supply port; a pressure roller which presses a print medium fed thereto to the outer peripheral wall; and a first cap device capable of closing the ink supply port. Moreover, the stencil printing machine further includes: an ink return device which has an ink return port on the outer peripheral wall, and returns the ink which flows into the ink return port; and a second cap device capable of closing the ink return port.

Abstract: A stencil printing machine, which includes: a drum which is freely rotatable and has an outer peripheral wall formed of an ink impermeable member, in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supplying device for supplying, to the surface of the outer peripheral wall, an ink guided from an ink tank; an ink recovery device for recovering, from an ink recovery portion, an extra ink on the surface of the outer peripheral wall; and a pressure roller which presses a print medium to the outer peripheral wall. The ink tank includes a main tank portion where unused ink is stored, and a sub-tank portion where the ink recovered by the ink recovery device is stored. The ink supplying device preferentially supplies the ink in the sub-tank portion.