Abstract: An intaglio printing machine provided with a plate cylinder (14), a wiping roller (19), an impression cylinder (13), and ink devices (17) for directly or indirectly supplying ink (I) from ink fountain devices (25) to the plate cylinder (14), and in which the ink devices (17) are provided with an ink fountain device (25) equipped with: an ink fountain roller (26); an ink-fountain-roller driving motor (42); an ink fountain (30) for storing ink (I); an ink fountain key (33), which is supported on the front end of the ink fountain (30) so as to move freely and is for adjusting the gap (G) between the ink fountain (30) and the ink fountain roller (26); and an ink-fountain-key adjusting motor (43) for adjusting amount of movement of the ink fountain key (33).

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: 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: An ink supply apparatus includes an ink fountain, ink fountain keys, and an ink guide portion. The ink fountain is formed from a pair of ink dams arranged to face each other, a bottom surface, and an outer peripheral surface of an ink fountain roller so as to store ink. The ink fountain keys that form gaps between the outer peripheral surface of the ink fountain roller and the ink fountain keys to extract the ink stored in the ink fountain. The ink guide portion projects from a distal end of each of the ink fountain keys toward the ink fountain roller so as to guide the ink extracted from the ink fountain to the ink fountain roller.

Abstract: A rotary screen printing press includes, a rotary screen cylinder which supports a screen printing form and is supported rotatably; an impression cylinder which is provided to oppose the rotary screen cylinder, and is supported rotatably; and a squeegee which is located within the rotary screen cylinder and, during printing, contacts an inner peripheral surface of the screen printing form, while being pressed against it, to transfer ink stored within the rotary screen cylinder to a material to be printed, which is held on the impression cylinder, via holes of the screen printing form. The printing press has a squeegee throw-on and throw-off control device which controls the pressing force of the squeegee acting on the inner peripheral surface of the screen printing form during printing in accordance with the type and thickness of the material to be printed.

Abstract: A rotary screen printing press, which includes a rotary screen cylinder for coating ink on a sheet transported by transport means, and a plate or form replacing work space whose upper side is closed, with respect to which a transport direction of the sheet is restrained by other device and a liquid coating unit including the rotary screen cylinder, which is open in at least one of directions orthogonal to the transport direction of the sheet, and where an operator performs work of replacing a screen printing form, comprises a plate or form rest provided below the rotary screen cylinder and supported to be movable to a first position within the liquid coating unit and a second position within the form replacing work space.

Abstract: An intaglio printing press includes, a rotary screen comprising a hollow cylinder, which has a small hole group for special ink supply formed in a circumferential surface of the hollow cylinder and which is supported rotatably, and a squeegee contacting an inner peripheral surface of the hollow cylinder, a rubber roller supported rotatably to oppose an outer peripheral surface of the hollow cylinder at a position where the squeegee contacts the inner peripheral surface of the hollow cylinder, and a sheet supplied with special ink, which has been stored within the hollow cylinder, by the squeegee via the small hole group of the hollow cylinder. The intaglio printing press further includes special ink guide means, such as guide grooves, for guiding a surplus of the special ink, which is not supplied to the sheet by the squeegee, to the small hole group of the hollow cylinder.

Abstract: A rotary screen printing press, which includes a rotary screen cylinder for coating ink on a sheet transported by transport means, and a plate or forme replacing work space whose upper side is closed, with respect to which a transport direction of the sheet is restrained by other device and a liquid coating unit including the rotary screen cylinder, which is open in at least one of directions orthogonal to the transport direction of the sheet, and where an operator performs work of replacing a screen printing forme, comprises a plate or forme rest provided below the rotary screen cylinder and supported to be movable to a first position within the liquid coating unit and a second position within the forme replacing work space.

Abstract: A rotary screen printing press includes a rotary screen cylinder which supports a screen printing forme and is supported rotatably; an impression cylinder which is provided to oppose the rotary screen cylinder, has a groove portion provided in an outer peripheral surface thereof, the groove portion accommodating a gripper device for holding a material to be printed, and is supported rotatably; and a squeegee which is located within the rotary screen cylinder and, during printing, contacts an inner peripheral surface of the screen printing forme, while being pressed against it, to transfer ink stored within the rotary screen cylinder to the material to be printed, which is held on the impression cylinder, via holes of the screen printing forme.

Abstract: A rotary screen printing press includes, a rotary screen cylinder which supports a screen printing forme and is supported rotatably; an impression cylinder which is provided to oppose the rotary screen cylinder, and is supported rotatably; and a squeegee which is located within the rotary screen cylinder and, during printing, contacts an inner peripheral surface of the screen printing forme, while being pressed against it, to transfer ink stored within the rotary screen cylinder to a material to be printed, which is held on the impression cylinder, via holes of the screen printing forme. The printing press has a squeegee throw-on and throw-off control device which controls the pressing force of the squeegee acting on the inner peripheral surface of the screen printing forme during printing in accordance with the type and thickness of the material to be printed.

Abstract: A rotary screen printing press includes, a rotary screen cylinder which supports a screen printing forme and is supported rotatably; an impression cylinder which is provided to oppose the rotary screen cylinder, and is supported rotatably; and a squeegee which is located within the rotary screen cylinder and, during printing, contacts an inner peripheral surface of the screen printing forme, while being pressed against it, to transfer ink stored within the rotary screen cylinder to a material to be printed, which is held on the impression cylinder, via holes of the screen printing forme. The printing press has a setting instrument for setting the length in the transport direction of the material to be printed, and a squeegee throw-on and throw-off control device for controlling the squeegee to be moved to a retreat position in accordance with the length in the transport direction of the material to be printed which has been set by the setting instrument.

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

Abstract: An intaglio printing press includes, a rotary screen comprising a hollow cylinder, which has a small hole group for special ink supply formed in a circumferential surface of the hollow cylinder and which is supported rotatably, and a squeegee contacting an inner peripheral surface of the hollow cylinder, a rubber roller supported rotatably to oppose an outer peripheral surface of the hollow cylinder at a position where the squeegee contacts the inner peripheral surface of the hollow cylinder, and a sheet supplied with special ink, which has been stored within the hollow cylinder, by the squeegee via the small hole group of the hollow cylinder. The intaglio printing press further includes special ink guide means, such as guide grooves, for guiding a surplus of the special ink, which is not supplied to the sheet by the squeegee, to the small hole group of the hollow cylinder.

Abstract: In a rotary screen device in which ink is transferred through holes of a screen, with a rotary screen cylinder provided with the screen being rotated, to carry out printing, the rotary screen cylinder is stopped, in accordance with a stop signal, at a position at which a pattern-free portion (a hole-free portion) of the screen comes to a lowermost position. Since the rotation of a stencil printing press is stopped in a rotation phase in which the pattern-free portion of the screen comes to the lowermost position, ink is prevented from dripping through the holes of the screen.

Abstract: A roller holding apparatus of a printing press comprises roller arms swingably supported by a metal roller, holders swingably supported by the roller arms for holding a rubber roller so as to be detachably mounted on the roller arms, and pressing members provided in the holders for pressing the rubber roller against the metal roller. The roller holding apparatus can perform roller replacement easily and quickly with a simple structure, and can always retain a set nip pressure.

Abstract: A roller holding apparatus of a printing press comprises roller arms swingably supported by a metal roller, holders swingably supported by the roller arms for holding a rubber roller so as to be detachably mounted on the roller arms, and pressing members provided in the holders for pressing the rubber roller against the metal roller. The roller holding apparatus can perform roller replacement easily and quickly with a simple structure, and can always retain a set nip pressure.

Abstract: A paper guide apparatus of a perfecting press is disclosed. The perfecting press comprises a blanketed impression cylinder which has a holding device for holding paper and prints one side of the paper, and a blanket cylinder which is in contact with the blanketed impression cylinder and prints the other side of the paper. The blanketed impression cylinder and the blanket cylinder are arranged nearly horizontally. In the paper guide apparatus, suction chambers for sucking and guiding the paper transported by the blanketed impression cylinder are provided between a transfer cylinder located directly ahead of the blanketed impression cylinder and the blanket cylinder, and an air nozzle is provided for blowing air between the paper transferred from the transfer cylinder to the blanketed impression cylinder and the circumferential surface of the blanketed impression cylinder.