Abstract: Provided is a jacket to be installed on a surface of one of impression cylinders and transport cylinders. The jacket is produced by the following process. Super hard particles, such as ceramic particles, are scattered on a surface of a sheet-shaped base member. A plating layer is then formed on the surface of the base member in a way that a convex and concave profile formed of the super hard particles is left. In the plating layer, fine particles of low surface energy resin are uniformly dispersed.

Abstract: An inspection apparatus for a sheet of paper subjected to a process to impart a translucent property including a “watermark” or a “security window” includes: an inspection cylinder in which a surface facing the sheet of paper is provided with a blackened portion; IR-LED illuminators which irradiate the sheet of paper with light containing infrared rays; an IR monochrome camera which images the sheet; an IR filter which eliminates visible light in the light emitted from the IR-LED illuminators and reflected off the sheet as well as the inspection cylinder and makes only the infrared rays incident on the IR monochrome camera; and a control device which determines appropriateness of a processed portion on the sheet having the translucent property on the basis of the infrared rays emitted from the IR-LED illuminators, reflected off the sheet as well as the inspection cylinder, and made incident on the IR monochrome camera.

Abstract: The purpose of the present invention is to provide a sheet ejection device enabled to operate continuously by automatically disabling an intrusion detector while effectively ensuring safety and also provide a sheet ejection method. The sheet ejection device comprises: a paper ejection chain (22b) for conveying paper (W); a first pile (26) or a second pile (26b) having loading plates (27a or 27b) arranged in a multistage manner and used for loading the paper ejected from the paper ejection chain; a first beam sensor (62a or 62b), a second beam sensor (63a or 63b), and a third beam sensor (64a or 64b) for detecting an intrusion into the first pile or the second pile.

Abstract: This invention discloses a printing quality inspection apparatus including a light irradiation device, an image capture device, a diffusely reflecting plate, and a determination device. When a member to be printed is a first sheet member, light emitted by the light irradiation device is diffusely reflected by the first sheet member and enters the image capture device. When the member to be printed is a second sheet member, the light emitted by the light irradiation device is diffusely reflected by the diffusely reflecting plate, is specularly reflected by the second sheet member, and enters the image capture device.

Abstract: In a coating apparatus including: an anilox roller which is rotatably supported and in which multiple recessed cells are formed on an outer peripheral surface; and a chamber device which is in contact with the outer peripheral surface of the anilox roller and in which varnish to be coated on a sheet is delivered from a delivery path of a chamber head into a chamber, the chamber device configured to supply the delivered varnish from the chamber to the cells of the anilox roller and discharge the varnish in the chamber from a discharge hole of a chamber body to the outside, the chamber device has pressure fluctuation reducing means, in an attachment hole of the chamber body, for reducing a pressure fluctuation in the chamber of the chamber head in such a way that the pressure in the chamber is maintained constant.

Abstract: An intaglio printing press includes: a first intaglio printing unit; a second intaglio printing unit; a dryer for drying a printed surface of a sheet subjected to printing by the first intaglio printing unit; a convertible unit which holds and conveys the sheet received from the first intaglio printing unit and passes the sheet to the second intaglio printing unit in such a way that a surface of the sheet to be subjected to intaglio printing by the second intaglio printing unit is switchable between one surface and another surface of the sheet; and a second skewing adjustment cylinder and a second circumferential adjustment cylinder which are disposed between the convertible unit and the second intaglio printing unit and which adjust a position of a pattern to be intaglio-printed on the sheet by the second intaglio printing unit.

Abstract: In a cylinder throw-on/off apparatus for a printing press, a cylinder throw-on/off motor is driven while the notch of a blanket cylinder opposes the notch of a plate cylinder to throw on/off the blanket cylinder with respect to the plate cylinder, and driven while the notch of the blanket cylinder opposes the notch of an impression cylinder to throw on/off the blanket cylinder with respect to the impression cylinder. A throw-on operation control unit drives the cylinder throw-on/off motor, to control throw-on operation of the blanket cylinder for the plate cylinder and the impression cylinder. A motor drive amount calculation unit obtains a drive amount of the cylinder throw-on/off motor, while controlling the throw-on operation of the blanket cylinder, in accordance with the rotation phase of the printing press.

Abstract: A sheet-fed printing press comprises: a screen printing unit for printing one surface of a sheet being transported; a drying unit, provided downstream of the screen printing unit in a transport direction, for drying the screen-printed one surface of the sheet; a gravure printing unit, provided downstream of the drying unit in the transport direction, for performing printing on the dried sheet; and a reversing unit, provided between the drying unit and the gravure printing unit, for switching between double-sided printing in which the other surface on the side opposite to the screen-printed one surface of the sheet is gravure-printed, and single-sided printing in which the screen-printed sheet is reversed, and the one surface of the reversed sheet is gravure-printed.

Abstract: A plate for a magnet cylinder includes a main body, a nonmagnetic portion, and a magnetic piece. The main body is formed of a flexible thin plate-like magnetic material to be magnetically mounted on the outer surface of a magnet cylinder. The nonmagnetic portion is projected from one end of the main body. The magnetic piece magnetically sandwiches the nonmagnetic portion against the outer surface of the magnet cylinder.

Abstract: In a rotary stencil printing press including a rotary screen cylinder which supports a screen printing form and is supported rotatably, and a squeegee which is located within the rotary screen cylinder and, when printing is done, contacts an inner peripheral surface of the screen printing form to transfer ink stored within the rotary screen cylinder to a web via holes of the screen printing form and, when printing is stopped, leaves the inner peripheral surface of the screen printing form, throw-on and throw-off of the squeegee with respect to the inner peripheral surface of the screen printing form, and adjustment of the position of the throw-on are performed by motors.

Abstract: In a printing press of a lenticular lens sheet, a cocking adjustment unit adjusts the relative angle between a plate on which a pattern formed from a plurality of pattern portions is formed such that boundary lines between the adjacent pattern portions become parallel and a transparent lenticular lens sheet on which a plurality of lenses are formed such that groove lines between the adjacent lenses become parallel. An adjustment amount calculation unit calculates an adjustment amount for the cocking adjustment unit based on the relationship between the boundary lines and the groove lines in a state in which the lenticular lens sheet is overlaid on the plate. A printing method of a lenticular lens sheet is also disclosed.

Abstract: An inspection apparatus for a sheet of paper subjected to a process to impart a translucent property such as a “watermark” or a “security window” includes: an inspection cylinder in which a surface facing the sheet of paper is provided with a blackened portion; IR-LED illuminators which irradiate the sheet of paper with light containing infrared rays; an IR monochrome camera which images the sheet of paper; an IR filter which eliminates visible light in the light emitted from the IR-LED illuminators and reflected off the sheet of paper as well as the inspection cylinder and makes only the infrared rays incident on the IR monochrome camera; and a control device which determines appropriateness of a processed portion on the sheet of paper having the translucent property on the basis of the infrared rays emitted from the IR-LED illuminators, reflected off the sheet of paper as well as the inspection cylinder, and made incident on the IR monochrome camera.

Abstract: An inspection apparatus for a sheet of paper subjected to a process to impart a translucent property such as a “watermark” or a “security window” includes: an inspection cylinder in which a surface facing the sheet of paper is provided with a luminescence-producing portion; UV-LED illuminators which irradiate the sheet of paper with light containing the ultraviolet rays; a color camera which images the sheer of paper; an ultraviolet cut filter which eliminates the ultraviolet rays in the light emitted from the UV-LED illuminators and reflected off the sheet of paper as well as the luminescence-producing portion and makes only the light having wavelengths longer than wavelengths of the ultraviolet rays incident on the color camera; and a control device which determines appropriateness of a processed portion on the sheet of paper having the translucent property on the basis of luminescence in a visible light range produced by the luminescence-producing portion and made incident on the color camera.

Abstract: In a screen printing apparatus including: an impression cylinder that receives a sheet from a transfer cylinder located upstream in the sheet transport direction through a sheet gripping device and transports the sheet held in the sheet gripping device; and a rotary screen cylinder that is in contact with the impression cylinder and performs screen printing for the sheet held by the impression cylinder, the transfer cylinder is located above the impression cylinder, and the rotary screen cylinder is located to the side of the impression cylinder so that ink, varnish, or the like accumulates in a squeegee portion including a squeegee shaft, a squeegee, and the like in the rotary screen cylinder.

Abstract: Described is a sheet-fed offset printing press including: a printing unit 20 printing on paper sheets 1; and laminate unit 40 for applying lamination to the paper sheets 1 printed by the printing unit 20, the lamination unit 40 being provided downstream of the printing unit 20 in a transport direction of the paper sheets 1.

Abstract: A sheet guiding device includes: gripper bars provided to delivery chains and each having a holding portion configured to hold an end portion of a paper sheet, the gripper bars configured to transport the paper sheet along a paper sheet transporting route spaced away from a travelling route of the delivery chains; a delivery cylinder having a guide surface and configured to guide the transported paper sheet, the guide surface extending along an arc-shaped transporting route portion in the paper sheet transporting route which is located outside an arc-shaped travelling route portion in the travelling route of the delivery chains and which is formed by the holding portion travelling along the arc-shaped travelling route portion; a linear travelling route portion formed downstream of the arc-shaped travelling route portion in a travelling direction of the delivery chains; and a suction guide for guiding the paper sheet to an inner side than the linear travelling route portion, the paper sheet located in a region

Abstract: A rotary screen apparatus includes: a hollow cylinder having multiple holes formed therein and configured to come into contact, at its outer peripheral surface, with the surface of a sheet held on an impression cylinder; a rotary screen including a squeegee configured to extrude ink delivered to the inner peripheral surface of the hollow cylinder through the holes by coming into contact with the inner peripheral surface of the hollow cylinder; and a restricting plate, disposed on the downstream side of the squeegee in the moving direction thereof in relative movement of the hollow cylinder and the squeegee performed when the ink is extruded through the holes in the hollow cylinder, for restricting movement of the ink such that the ink is kept within a space present on a downstream side of the portion of the squeegee in contact with the hollow cylinder in the moving direction.

Abstract: The present invention comprises: one-surface impression cylinders (121a-161a) for holding and transporting a sheet; one-surface rubber cylinders (122a-162a) for printing on a sheet in one direction, the rubber cylinders being in contact with the impression cylinders (121a-161a); one-surface plate cylinders (123a-163a) in contact with the rubber cylinders (122a-162a); one-surface ink devices (124a-164a) for supplying ink to the plate cylinders (123a-163a); other-surface impression cylinders (121b-161b) for receiving, holding, and conveying the sheet from the impression cylinders (121a-161a) in contact with the impression cylinders (121a-161a); other-surface rubber cylinders (122b-162b) for printing on the sheet in the other direction, the other-surface rubber cylinders being in contact with the impression cylinders (121b-161b); other-surface plate cylinders (123b-163b) in contact with the rubber cylinders (122b-162b); and other-surface ink devices (124b-164b) for supplying ink to the plate cylinders (123b-163b

Abstract: A printer is provided with: offset printing units (120 to 150) comprising impression cylinders (121a to 151a, 121b to 151b) for holding and transferring a sheet (101), blanket cylinders (122a to 152a, 122b to 152b) facing the impression cylinders (121a to 151a, 121b to 151b), plate cylinders (123a to 153a, 123b to 153b) facing the blanket cylinders (122a to 152a, 122b to 152b), and ink devices (124a to 154a, 124b to 154b) for supplying ink to the plate cylinders (123a to 153a, 123b to 153b); and an intaglio printing unit (180) comprising an impression cylinder (181) which receives the sheet (101) subjected to offset printing in the offset printing unit (150) and holds and transfers the sheet (101), an intaglio plate cylinder (182) facing the impression cylinder (181), ink supply means (183 to 185) for supplying ink to the intaglio plate cylinder (182), and the like.

Abstract: An ink supply method in an ink supply apparatus including an ink fountain, a plurality of ink fountain keys, an ink fountain roller, an ink ductor roller, and an ink roller group. An ink film thickness distribution corresponding to an image on a printing plate is formed in the ink roller group. The ink roller group is divided into a plurality of roller subgroups. After or before division, a throw-on operation is performed for at least one of the plurality of roller subgroups, and a plate cylinder on which the printing plate to be used for printing of the next job is mounted. Ink in at least one of the plurality of roller subgroups is supplied to the printing plate mounted on the plate cylinder by rotating the plate cylinder and at least one of the plurality of roller subgroups. An ink supply apparatus is also disclosed.