Abstract: In a stencil printing machine including a plate discharge device for stripping a master from a plate cylinder and collecting the master after attaching the master subjected to plate making to the plate cylinder for printing on a sheet, the plate discharge device includes a storing section for storing the master, a lid for closing the storing section to be opened/closed freely, and a device for locking the lid in a closed state, the plate discharge device being provided such that it can be taken out to the housing of the stencil printing machine.

Abstract: A paper folding mechanism includes: first and second folding rollers (51, 52); first and second conveyance rollers (61, 62); a protrusion member (71); and a control part. Both the rollers (51, 52) are provided so that a paper is sandwiched therebetween with its fold line located in front, and is allowed to pass therethrough in a first direction. The first folding roller (51) and the first conveyance roller (61) are provided so that the paper is sandwiched therebetween and conveyed in a second direction orthogonal to the first direction. The second folding roller (52) and the second conveyance roller (62) are provided so that the paper is sandwiched therebetween and conveyed in any one of the second direction and the direction opposite thereto. The protrusion member (71) is provided so that the fold line of the paper conveyed by both the rollers (61, 62) is protruded in the first direction and fed between both the rollers (51, 52).

Abstract: When a sheet of paper is inverted and the direction is changed, members such as a roller do not come into contact with the printed surface of the sheet and it is possible to prevent smudges by eliminating an ink stain on a surface of the sheet.

Abstract: Curling of a printed sheet is corrected, friction is reduced on a paper transport surface, and the shape of the printed and ejected sheet is adjusted to a predetermined shape.

Abstract: A double-sided image forming device includes: a paper feeding section (3); a printing section (4); a first conveyance route (6) for conveying a fed paper sheet (2) to a paper discharge section (8) via the printing section (4); and a second conveyance route (7) for receiving, on its conveyance surface, the paper sheet (2), a first side (21) of which has been printed, from the first conveyance route (6), and for conveying the paper sheet (2) while reversing it, thereby conveying the paper sheet (2) to the upstream side of the printing section (4) in the conveyance direction of the first conveyance route (6), wherein the second conveyance route (7) has a reverse conveyance route (9) for receiving, on its conveyance surface, a second side (22) of the paper sheet (2), and for conveying the paper sheet (2) while reversing it, and wherein the reverse conveyance route (9) is formed by a combination of a plurality of reverse mechanisms each including: a first conveyance section (91) for linearly conveying the paper sh

Abstract: A paper ejecting device is provided which allows a sheet jumping from a paper ejecting device to a paper receiving tray to be ejected with a desired shape by changing the corrected shape of the sheet according to the kind (size, thickness) of paper.

Abstract: Curling of a printed sheet is corrected, friction is reduced on a paper transport surface, and the shape of the printed and ejected sheet is adjusted to a predetermined shape.

Abstract: The present invention provides an adjusting mechanism in which a paper feed timing adjustment member (95) is moved around the axis of a rotary shaft of a cam by an adjustment member drive means so as to adjust the position of an end of a second arm and then the position of a cam follower on a sliding surface of the cam, thereby adjusting a timing at which a paper feed drive means drives a timing roller, wherein there is provided an urging means (98) for constantly urging the paper feed timing adjustment member (95) in either one of directions around the axis of the rotary shaft of the cam.

Abstract: A sheet feeder is characterized by comprising a suction carrying means, an oblique carrying means, a handling member, a detecting means located downstream of the handling member and for detecting a sheet passing through the handling member, and a retracting mechanism for retracting the handling member from the sheet passing through while the detecting means is detecting the sheet passing through.

Abstract: There is provided a sheet inverting and conveying mechanism for conveying a sheet in a first direction, inverting obverse and reverse sides of the sheet, and then conveying the inverted sheet in a second direction. The mechanism includes: a first conveyance section for receiving, at its conveyance face, one side of the sheet, and for conveying the sheet in the first direction (the direction of an arrow S); a sheet inverting section for receiving, at its bent inner peripheral face, one side of the sheet, and for inverting the sheet while bending the sheet along the bent inner peripheral face; and a second conveyance section for receiving, at its conveyance face, one side of the inverted sheet, and for conveying the sheet in the second direction (the direction of an arrow T), wherein the first conveyance section and the second conveyance section are formed so that the sheet is conveyed while being attracted to the conveyance faces.

Abstract: In a bookbinding apparatus (1) comprising an adhesive tank (23) for retaining therein an adhesive melted by heat, a roller (24) ratatably supported with the adhesive tank so as to dip a lower portion thereof in the adhesive retained in the adhesive tank, for applying the adhesive to a sheet stack along a lateral edge thereof, and a holding unit (18) capable of holding the sheet stack, an adhesive tank carrier (76, 78), the movably constituted adhesive tank (23) and the roller (24) are disposed at a stand-by position located outside a longitudinal end face of the sheet stack held by the holding unit (18) in a stand-by stage so that the adhesive tank is contactlessly heated to melt the adhesive, and are moved together from the stand-by position in a longitudinal direction of the sheet stack substantially through an entire area under a back face thereof in a bookbinding stage.

Abstract: A plate-making apparatus for stencil printing includes a plate feed section which feeds the heat-sensitive stencil plate that is an extended thermoplastic resin film with a predetermined thickness, and a heater to form ink-permeable openings in the film by heating the film, in which an opposite side surface to the minute recess side of the film is heated by the heater, the heater is a thermal head, a tensile stress at the time of extension internally remains in said thermoplastic resin film, an energy output of the thermal head for heating sufficiently satisfies to fuse-penetrate a thin closing portion of the minute recess, but it is restricted to the range which does not fuse-perforate a thick portion except the recess portion of the film, so that the openings are formed by the heated fused portion communicating the minute recess.

Abstract: A paper sheet processing device (1) for processing paper sheets while carrying the paper sheets, comprising a device body (10), a carrier means (2) for carrying the paper sheets one by one, a carrier driving means for driving said carrier means, processing device parts (4A, 4B, 4C) which are installed in a carrying route (20) formed of the carrier means and which process the paper sheets, and processing driving means for driving the processing device parts. The device is characterized in that the processing device parts are installed detachably from the device body.

Abstract: A paper sheet processing device (1) for processing paper sheets while carrying the paper sheets, comprising a device body (10), a carrier means (2) for carrying the paper sheets one by one, a carrier driving means for driving said carrier means, processing device parts (4A, 4B, 4C) which are installed in a carrying route (20) formed of the carrier means and which process the paper sheets, and processing driving means for driving the processing device parts. The device is characterized in that the processing device parts are installed detachably from the device body.

Abstract: A plate-making apparatus for stencil printing includes a plate feed section which feeds the heat-sensitive stencil plate that is an extended thermoplastic resin film with a predetermined thickness, and a heater to form ink-permeable openings in the film by heating the film, in which an opposite side surface to the minute recess side of the film is heated by the heater, the heater is a thermal head, a tensile stress at the time of extension internally remains in said thermoplastic resin film, an energy output of the thermal head for heating sufficiently satisfies to fuse-penetrate a thin closing portion of the minute recess, but it is restricted to the range which does not fuse-perforate a thick portion except the recess portion of the film, so that the openings are formed by the heated fused portion communicating the minute recess.

Abstract: A plate-making method for stencil printing in which heat-sensitive stencil plate material for stencil printing consisting of a thermoplastic resin film is melted by heating of a thermal head to perforate an ink permeable openings includes forming recesses on one side of the film. An opposite side to the one side of the film is heated so that the heated portion is melted for communication with the recesses to form ink permeable openings.

Abstract: A sheet feeder is characterized by comprising a suction carrying means, an oblique carrying means, a handling member, a detecting means located downstream of the handling member and for detecting a sheet passing through the handling member, and a retracting mechanism for retracting the handling member from the sheet passing through while the detecting means is detecting the sheet passing through.

Abstract: The present invention relates to an adhesive coating device for sheet-binding provided with a roller 14, part of which is immersed in adhesive 10 stored in an adhesive reservoir 12, for applying hot-melted adhesive 10 in the above-mentioned adhesive reservoir 12 along the arranged one-side edge of a bundle of sheets 54 while rotating. The device includes an electromagnetic induction heating coil 20 disposed in the vicinity of the above-mentioned roller 14, and a current supply device 5 for supplying a high-frequency current to the above-mentioned electromagnetic induction heating coil 20.

Abstract: In a bookbinding apparatus (1) comprising an adhesive tank (23) for retaining therein an adhesive melted by heat, a roller (24) ratatably supported with the adhesive tank so as to dip a lower portion thereof in the adhesive retained in the adhesive tank, for applying the adhesive to a sheet stack along a lateral edge thereof, and a holding unit (18) capable of holding the sheet stack, an adhesive tank carrier (76, 78), the movably constituted adhesive tank (23) and the roller (24) are disposed at a stand-by position located outside a longitudinal end face of the sheet stack held by the holding unit (18) in a stand-by stage so that the adhesive tank is contactlessly heated to melt the adhesive, and are moved together from the stand-by position in a longitudinal direction of the sheet stack substantially through an entire area under a back face thereof in a bookbinding stage.

Abstract: A winding apparatus for removing a used stencil in a printing machine having a stencil lift-off mechanism for lifting the leading end of the used stencil from a printing drum assembly and transporting mechanism for transporting the used stencil onto the winding apparatus, the winding apparatus comprises a generally cylindrical floating core for taking up the used stencil therearound, a support mechanism for rotatably supporting the core in contact directly therewith or through the used stencil when the core is at least partially wound with the used stencil, and a drive mechanism for rotating the core about the longitudinal axis thereof at a speed synchronized with the speed of transport of the used stencil.