Abstract: A digital printing apparatus including a sheet supply device, printing cylinder, inkjet nozzle portion, sheet delivery device, and conveyance devices. The sheet supply device supplies sheets one by one at a predetermined period. The printing cylinder includes at least one gripper device that grips and holds the sheet, and conveys the sheet while one edge of the sheet supplied from the sheet supply device is held by the plurality of gripper devices. The inkjet nozzle portion discharges ink droplets onto the sheet. The conveyance devices include a plurality of gripper devices including one reversing gripper device that grips and holds the other edge of the sheet, and conveys the sheet printed on one surface, which is received from the printing cylinder in a double-sided printing mode. The sheet is turned by reversing the obverse/reverse surface of the sheet by the reversing gripper device in the process of conveyance.

Abstract: After the end of a preceding print job, a printing press is stopped, and ink form rollers (6-1 to 6-4) of an ink roller group (6) are thrown off. After that, a printing plate (7) is exchanged with a printing plate (7?) of a next print job, and a blanket (91) mounted on a blanket cylinder (9) is cleaned. The opening amounts of ink fountain keys (4-1 to 4-n) corresponding to the image of the printing plate (7?) of the next print job are obtained. The obtained opening amounts of the ink fountain keys (4-1 to 4-n) are corrected by correction values of the opening amounts of the ink fountain keys (4-1 to 4-n) considering the influence of cleaning of the blanket (91) to obtain corrected opening amounts. In a state in which the opening amounts of the ink fountain keys (4-1 to 4-n) have been set to the corrected opening amounts, a corrected ink film thickness distribution corresponding to the image of the printing plate (7?) of the next print job is formed on the ink roller group (6).

Abstract: An Orlof printing section (2) is provided with an Orlof printing unit that has the following: partial plate cylinders (11), a collecting blanket cylinder (12), a collecting plate cylinder (13), a blanket cylinder (9), an impression cylinder (10), and a moving inker (25). An offset printing section (3) is provided with front-side and back-side offset printing units (3a-3d, 3e-3h) that each have an ink-supply device (18), a plate cylinder (19), a blanket cylinder (15), and an impression cylinder (16). The respective impression cylinders of the front-side offset printing unit and the back-side offset printing unit are placed up against each other such that said printing units receive and output sheets between said impression cylinders. The offset printing section (3) is also provided with a front-side inspection camera (23) and a back-side inspection camera (24). The Orlof printing section and the offset printing section are connected by transfer cylinders (14).

Abstract: After the end of a preceding print job, a printing press is stopped, and ink form rollers (6-1 to 6-4) of an ink roller group (6) are thrown off. After that, a printing plate (7) is exchanged with a printing plate (7?) of a next print job, and a blanket (91) mounted on a blanket cylinder (9) is cleaned. The opening amounts of ink fountain keys (4-1 to 4-n) corresponding to the image of the printing plate (7?) of the next print job are obtained. The obtained opening amounts of the ink fountain keys (4-1 to 4-n) are corrected by correction values of the opening amounts of the ink fountain keys (4-1 to 4-n) considering the influence of cleaning of the blanket (91) to obtain corrected opening amounts. In a state in which the opening amounts of the ink fountain keys (4-1 to 4-n) have been set to the corrected opening amounts, a corrected ink film thickness distribution corresponding to the image of the printing plate (7?) of the next print job is formed on the ink roller group (6).

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: A rotary screen printing press includes: a screen plate; a squeegee; squeegee supporting means for supporting the squeegee; and a worm and a worm wheel. The squeegee supporting means includes: a supporting plate swingably supported and supporting the worm and the worm wheel; an eccentric sleeve configured to adjust the position of the center of swinging movement of the supporting plate; and a contact surface and a screw configured to limit the direction of the movement of the supporting plate. The eccentric sleeve and the contact surface and screw cooperate with each other to move the tip of the squeegee along the tangent line of an impression cylinder at a position at which the screen plate and the squeegee contact each other.

Abstract: An inspection device (40) is configured to be provided with; white LED illuminators (41a1, 41a2, 41b1, 41b2); IR-LED illuminators (43a, 43b); visible range color cameras (42A, 42B); an IR monochrome camera (44) which is provided at a position outside the fields of view of the cameras (42A, 42B); support frames (49a, 49b) which support the illuminators (41a1, 41a2, 41b1, 41b2, 43a, 43b); an IR filter (45) which causes only infrared rays to be incident on the camera (44); and a control unit (46) which, according to visible light incident on the cameras (42A, 42B), determines whether a pattern portion printed on paper (W) by ordinary ink is appropriate or not, and according to the infrared rays incident on the camera (44), determines whether a portion in which a “security thread” is processed and a portion in which an “OVD” is processed of the paper (W) are appropriate or not.

Abstract: An inking device of a numbering and imprinting machine includes: a numbering unit provided on an outer peripheral portion of a numbering cylinder and configured to print a code onto a transported sheet; a partition member configured to partition the inside of the ink fountain such that inks are stored divided by their colors inside the ink fountain; an ink fountain roller configured to draw out the inks stored in the divided manner inside the ink fountain, such that the inks appear side by side in the roller axial direction; select rollers onto which the inks fed from the ink fountain roller are transferred, respectively; oscillating rollers onto which the inks fed from the select rollers are transferred, respectively; and form rollers configured to rotate such that convex portions thereof, onto which the inks fed from the oscillating rollers are transferred, come into contact with the numbering unit.

Abstract: A digital printing apparatus including a sheet supply device, printing cylinder, inkjet nozzle portion, sheet delivery device, and conveyance devices. The sheet supply device supplies sheets one by one at a predetermined period. The printing cylinder includes at least one gripper device that grips and holds the sheet, and conveys the sheet while one edge of the sheet supplied from the sheet supply device is held by the plurality of gripper devices. The inkjet nozzle portion discharges ink droplets onto the sheet. The conveyance devices include a plurality of gripper devices including one reversing gripper device that grips and holds the other edge of the sheet, and conveys the sheet printed on one surface, which is received from the printing cylinder in a double-sided printing mode. The sheet is turned by reversing the obverse/reverse surface of the sheet by the reversing gripper device in the process of conveyance.

Abstract: A perfector includes: a printing unit that performs printing simultaneously on both surfaces of a paper sheet; detecting means for detecting printing conditions on both surfaces of the paper sheet; and transporting means for transporting the paper sheet to a delivery unit. The printing unit includes: a blanket impression cylinder that holds and transports the paper sheet; and a blanket cylinder in contact with the blanket impression cylinder. The transporting means includes: a transfer cylinder in contact with the blanket impression cylinder and receives the paper sheet from the blanket impression cylinder; and a delivery cylinder in contact with the transfer cylinder and receives the paper sheet from the transfer cylinder. The detecting means includes: a first checking camera that detects the printing condition on one surface of the paper sheet; and a second checking camera that detects the printing condition on the other surface of the paper sheet.

Abstract: A printing press includes an impression cylinder, a blanket cylinder, a collecting plate cylinder, a collecting blanket cylinder, a plurality of partial plate cylinders, a plurality of inking devices, and a dampening unit. The impression cylinder holds and transports a sheet. The blanket cylinder is in contact with the impression cylinder. The collecting plate cylinder is in contact with the blanket cylinder, and a lithographic printing plate is mounted on the collecting plate cylinder. The collecting blanket cylinder is in contact with the collecting plate cylinder. The plurality of partial plate cylinders are in contact with the collecting blanket cylinder. The plurality of inking devices supply ink to the plurality of partial plate cylinders, respectively. The dampening unit supplies dampening water to the collecting plate cylinder.

Abstract: A sheet conveyance device including first to third conveyance units, independent driving unit, device driving unit, and control unit. The first conveyance unit includes a first holder that holds one edge of a sheet, and conveys the sheet. The second conveyance unit includes a second holder that holds one edge of the sheet, and conveys the sheet. The third conveyance unit is supported to be swingable between a reception position at which it receives the sheet from the first conveyance unit, and a transfer position at which it transfers the sheet to the second conveyance unit. The third conveyance unit includes a third holder that holds the other edge of the sheet conveyed by the first conveyance unit, and conveys the sheet held by the third holder. The independent driving unit drives the first conveyance unit. The control unit adjusts the speed at which the sheet is conveyed.

Abstract: A numbering and imprinting machine includes: a numbering printing unit for one surface including an impression cylinder and a numbering cylinder; a first numbering printing unit for the other surface including an impression cylinder and a numbering cylinder; a drying unit for numbering printing for one surface including a drying cylinder and a drying device; a second numbering printing unit for the other surface including an impression cylinder and a numbering cylinder; and a drying unit for numbering printing for the other surface including a transfer cylinder, a drying cylinder, and a drying device.

Abstract: Provided is an intaglio printing press including: a gravure printing device, which performs gravure printing on one surface of a sheet of paper; dryers, which dry the one surface of the sheet of paper, on which gravure printing is performed by the gravure printing device; an intaglio printing device, which performs intaglio printing on the sheet of paper having been dried by the dryers; and a printing surface switching device, which transfers the sheet of paper from the gravure printing device to the intaglio printing device in a manner that a surface of the sheet of paper on which the intaglio printing device performs intaglio printing is switched between any one of the one surface and the other surface of the sheet of paper.

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: A printing/coating method includes the steps of transferring highly reactive ink/varnish which cures with a low light energy onto a transfer object, and irradiating the transfer object, onto which the highly reactive ink/varnish is transferred, with light in the wavelength range, in which no ozone is generated, to cure the highly reactive ink/varnish on the transfer object. A printing/coating apparatus is also disclosed.

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: A rotary screen printing press includes: a sub-frame supporting a screen plate with brackets interposed therebetween, the screen plate being formed in a cylindrical shape; a screen-plate engagement-disengagement cylinder configured to move the sub-frame between a print position and a retreat position; and supporting plates supporting a squeegee in such a way that the squeegee is engageable with and disengageable from the inner periphery of the cylindrical screen plate. The supporting plates are supported on the sub-frame.

Abstract: In a proof printing press, a length of an outer circumference of a plate cylinder at a downstream side of a facing position P1 in a rotation direction is longer than a length in a circumferential direction of a mounting surface of the plate cylinder, where the length of the outer circumference of the plate cylinder extends between the facing position P1 where the plate cylinder faces a collecting cylinder and a facing position P2 where the plate cylinder faces a wiping roller, and a length of the outer circumference of the plate cylinder at a downstream side of the facing position P2 is longer than the length in the circumferential direction of the mounting surface of the plate cylinder, where the length of the outer circumference of the plate cylinder extends between the facing position P2 and a facing position P3 where the plate cylinder faces an impression cylinder.

Abstract: An Orlof printing section (2) is provided with an Orlof printing unit that has the following: partial plate cylinders (11), a collecting blanket cylinder (12), a collecting plate cylinder (13), a blanket cylinder (9), an impression cylinder (10), and a moving inker (25). An offset printing section (3) is provided with front-side and back-side offset printing units (3a-3d, 3e-3h) that each have an ink-supply device (18), a plate cylinder (19), a blanket cylinder (15), and an impression cylinder (16). The respective impression cylinders of the front-side offset printing unit and the back-side offset printing unit are placed up against each other such that said printing units receive and output sheets between said impression cylinders. The offset printing section (3) is also provided with a front-side inspection camera (23) and a back-side inspection camera (24). The Orlof printing section and the offset printing section are connected by transfer cylinders (14).