Abstract: A screen printing unit equipped with a rotary screen apparatus comprises a cylindrical screen rotatably supported so as to be brought into contact with a rotatable impression cylinder. Multiple small holes are formed in the circumferential surface of the screen, and are filled up with a coating material. Some of the holes corresponding to a pattern not being filled with the coating material, and a special ink stored inside the screen can be supplied to a sheet held on the outer circumferential surface of the impression cylinder so as to form a shape corresponding to the pattern. The small holes are formed only in an area of the screen in the circumferential direction thereof extending from a position corresponding to the downstream-side end of the sheet in the sheet-conveying direction to a position corresponding to the upstream-side end of the sheet in the sheet-conveying direction.

Abstract: An ink supply apparatus of a printing press includes at least one inking device. In the inking device, an ink fountain roller is rotatably supported. An ink fountain main body forms a space to store an ink together with an outer surface of the ink fountain roller. A guide member slidably supports the ink fountain main body and guides the ink fountain main body between a first position where the space is formed and a second position spaced apart from the ink fountain roller than the first position. A doctor including a blade is attached to a doctor holding member between the ink fountain main body and the ink fountain roller when the ink fountain main body is located at the second position. The blade abuts against the ink fountain roller and cleans the ink fountain roller.

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: Disclosed is a contact-pressure adjusting method and a contact-pressure adjusting system, each of which automatically adjusts the contact pressure between two rotors, for a liquid application machine including: a first rotor to which liquid is supplied; a second rotor to which the liquid is supplied from the first rotor; and a contact-pressure adjusting unit for adjusting the contact pressure between the first rotor and the second rotor. By using a temperature measuring unit, measured is: the temperature of at least one of the surfaces of the first and second rotors; the temperature of at least one of the liquid on the surface of the first rotor and the liquid on the surface of the second rotor; or the temperature of at least one of the vicinity of the first rotor and the vicinity of the second rotor. The contact-pressure adjusting unit is adjusted in accordance with the measured temperature.

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: An intaglio printing press includes: an intaglio cylinder; an ink collecting cylinder which has a blanket attached to a circumferential surface of the collecting cylinder, is in contact with the intaglio cylinder, and transfers ink onto the intaglio cylinder; multiple chablon rollers which are in contact with the ink collecting cylinder and transfer ink onto the ink collecting cylinder; and an inking device which feeds ink to the chablon rollers. In the intaglio printing press, a work space is formed between the chablon roller located at the highest position and the chablon roller immediately below the highest chablon roller. The work space allows an access to the ink collecting cylinder without detachment of the chablon rollers.

Abstract: A sheet guide device has: a delivery chain for holding and transporting a sheet; first and second piles for piling the sheets transported by the delivery chain; a sheet release mechanism for switching between a first state, where the sheet held by the delivery chain is delivered to the first pile, and a second state, where the sheet held by the delivery chain is passed above the first pile and transported downstream in a sheet transport direction; and a guide rail which, in the second state, stretches out to above the first pile by an air cylinder to guide the sheet being passed. A wire moving between a guide position, where the wire guides the sheet between the first and second piles, and a retreat position, where the wire has receded from the guide position, is included. In the second state, the wire has moved to the guide position.

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 screen printing unit equipped with a rotary screen apparatus comprises a cylindrical screen rotatably supported so as to be brought into contact with a rotatable impression cylinder. Multiple small holes are formed in the circumferential surface of the screen, and are filled up with a coating material. Some of the holes corresponding to a pattern not being filled with the coating material, and a special ink stored inside the screen can be supplied to a sheet held on the outer circumferential surface of the impression cylinder so as to form a shape corresponding to the pattern. The small holes are formed only in an area of the screen in the circumferential direction thereof extending from a position corresponding to the downstream-side end of the sheet in the sheet-conveying direction to a position corresponding to the upstream-side end of the sheet in the sheet-conveying direction.

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 printing quality control method and apparatus are disclosed for an intaglio printing press including an intaglio cylinder which is supplied with ink, an impression cylinder opposing the intaglio cylinder, and holding a sheet which is supplied with the ink from the intaglio cylinder, and a motor for adjusting a printing pressure between the intaglio cylinder and the impression cylinder. The emboss amount of a printing product of printing by the intaglio printing press is measured by a face side distance measuring instrument and a reverse side distance measuring instrument, and the motor for adjusting the printing pressure between the intaglio cylinder and the impression cylinder is drivingly controlled based on the emboss amount measured.

Abstract: Provided are an ink supply amount adjustment method and system for a relief printing press which enable a reduction in a burden of the operator by enabling automatic adjustment of an ink fountain key opening degree and an ink fountain roller rotation speed on the basis of the width or the area of a line portion measured in advance, and a reduction in costs by reducing the amount of waste paper to be produced, the relief printing press including: an ink fountain for storing ink; and ink fountain keys and an ink fountain roller for adjusting the amount of ink supplied from the ink fountain. The width of a line portion printed on paper by the relief printing press is measured by a width measuring camera, and the ink fountain key opening degrees and the ink fountain roller rotation speed are controlled on the basis of the obtained line-portion width.

Abstract: Provided are an ink supply amount adjustment method and system for a relief printing press including: a first rotor, such as an ink form roller, to which ink is supplied; a second rotor, such as a plate cylinder, to which the ink is supplied from the first rotor; and adjustment means, such as a motor, for adjusting, for example, the nip pressure between the first rotor and the second rotor. The width of a line portion printed on paper W by the relief printing press is measured by a line-width measuring camera, and the adjustment means such as the motor is controlled on the basis of the line portion width obtained by the line-width measuring camera.

Abstract: A printing quality control method and apparatus are disclosed for a printing press including an ink fountain for storing ink, and a motor for driving an ink fountain roller which adjusts the amount of ink supplied from the ink fountain. According to the method and apparatus, a face side distance measuring instrument measures the ink film thickness of a printing product of printing by the printing press, and control means controls the motor for driving the ink fountain roller based on the ink film thickness measured.

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 printing press equipped with a UV lamp for drying UV ink printed on a sheet transported by a transfer cylinder and a delivery cylinder, the UV lamp is accommodated within each of the transfer cylinder and the delivery cylinder, and is supported to be non-pivotable with respect to frames and immovable in the axial direction of the cylinder when the printing press is in operation.

Abstract: Disclosed is a contact-pressure adjusting method and a contact-pressure adjusting system, each of which automatically adjusts the contact pressure between two rotors, for a liquid application machine including: a first rotor to which liquid is supplied; a second rotor to which the liquid is supplied from the first rotor; and a contact-pressure adjusting unit for adjusting the contact pressure between the first rotor and the second rotor. By using a temperature measuring unit, measured is: the temperature of at least one of the surfaces of the first and second rotors; the temperature of at least one of the liquid on the surface of the first rotor and the liquid on the surface of the second rotor; or the temperature of at least one of the vicinity of the first rotor and the vicinity of the second rotor. The contact-pressure adjusting unit is adjusted in accordance with the measured temperature.