There is described an intaglio printing press comprising (i) a stationary machine frame (01) supporting an intaglio printing cylinder (07) and an impression cylinder (06) contacting the intaglio printing cylinder (07), (ii) an inking system (12, 13, 16) for inking the intaglio printing cylinder (07), which inking system (12, 13, 16) comprises an ink-collecting cylinder (12) designed to contact the intaglio printing cylinder (07) and at least one inking device (13, 16) for supplying ink to said ink-collecting cylinder (12), and (iii) at least a first mobile carriage (11) supporting the ink-collecting cylinder (12), which first mobile carriage (11) is adapted to be moved with respect to the stationary machine frame (01) between a working position where the ink-collecting cylinder (12) contacts the intaglio printing cylinder (07) and a retracted position where the ink-collecting cylinder (12) is retracted away from the intaglio printing cylinder (07). The axis of rotation of the ink-collecting cylinder (12) lies below a horizontal plane (P0) intersecting the axis of rotation of the intaglio printing cylinder (07) and a plane (P2) intersecting the axis of rotation of the ink-collecting cylinder (12) and the axis of rotation of the intaglio printing cylinder (07) forms, in the working position of the first mobile carriage (11), an acute angle () with respect to the horizontal plane (P0).

There is described an intaglio printing press comprising (i) a stationary machine frame (01) supporting an intaglio printing cylinder (07) and an impression cylinder (06) contacting the intaglio printing cylinder (07), (ii) an inking system (12, 13, 16) for inking the intaglio printing cylinder (07), which inking system (12, 13, 16) comprises an ink-collecting cylinder (12) designed to contact the intaglio printing cylinder (07) and at least one inking device (13, 16) for supplying ink to said ink-collecting cylinder (12), and (iii) at least a first mobile carriage (11) supporting the ink-collecting cylinder (12), which first mobile carriage (11) is adapted to be moved with respect to the stationary machine frame (01) between a working position where the ink-collecting cylinder (12) contacts the intaglio printing cylinder (07) and a retracted position where the ink-collecting cylinder (12) is retracted away from the intaglio printing cylinder (07). The axis of rotation of the ink-collecting cylinder (12) lies below a horizontal plane (P0) intersecting the axis of rotation of the intaglio printing cylinder (07) and a plane (P2) intersecting the axis of rotation of the ink-collecting cylinder (12) and the axis of rotation of the intaglio printing cylinder (07) forms, in the working position of the first mobile carriage (11), an acute angle () with respect to the horizontal plane (P0).

A method of producing a printed substrate includes rotating an anilox roll having first recesses supplied with a coating liquid, rotating a plate cylinder fitted with a printing plate having second recesses, transferring the coating liquid from the first recesses to the second recesses and holding the coating liquid in the second recesses, and rotating the plate cylinder while keeping the outer surface of the printing plate in contact with a printed substrate to transfer the coating liquid held in the second recesses to the printed substrate. A ratio of a maximum volume of the coating liquid held by the second recesses per unit area on the outer surface of the printing plate to a maximum volume of the coating liquid held by the first recesses per unit area on the outer surface of the anilox roll ranges from 0.50 to 2.00.

A rotogravure printing machine has a shaft that rotates and a rotogravure cylinder sleeve for rotation with the shaft. An annular end plate connects to the shaft, and the end plate has a contact surface for contact with a mating contact surface at an inner side of the cylinder sleeve.

A rotogravure printing machine has a shaft that rotates and a rotogravure cylinder sleeve for rotation with the shaft. An annular end plate connects to the shaft, and the end plate has a contact surface for contact with a mating contact surface at an inner side of the cylinder sleeve.

The invention relates to an ink circuit of an inking unit of a flexographic or gravure printing press. In order to reduce the changeover costs in relation to the ink circuit of an inking unit of a flexographic or gravure printing press, an ink circuit of an inking unit of a flexographic or gravure printing press is provided, wherein the inking unit has an ink inflow for providing ink which is ready for printing and an ink outflow for transporting away excess ink, wherein the ink inflow is operated by an inflow pump and the ink outflow is operated by an outflow pump, and wherein the outflow pump is a pump which is driven by an electric motor.

The invention relates to an ink circuit of an inking unit of a flexographic or gravure printing press. In order to reduce the changeover costs in relation to the ink circuit of an inking unit of a flexographic or gravure printing press, an ink circuit of an inking unit of a flexographic or gravure printing press is provided, wherein the inking unit has an ink inflow for providing ink which is ready for printing and an ink outflow for transporting away excess ink, wherein the ink inflow is operated by an inflow pump and the ink outflow is operated by an outflow pump, and wherein the outflow pump is a pump which is driven by an electric motor.

Provided is a gravure printing apparatus, a gravure printing method, and a printed matter manufacturing method in which the ink transfer characteristics in gravure printing are controlled to be improved. The gravure printing apparatus includes: a gravure plate cylinder; a doctor blade configured to scrape off a superfluous ink from a plate surface of the gravure plate cylinder; an impression cylinder configured to press a base material to be printed against the plate surface to transfer the ink remaining in a cell of the gravure plate cylinder; and a transfer characteristics control mechanism configured to control ink transfer characteristics by supplying a gas selected from the group consisting of air having predetermined humidity, dry air, and an inert gas to at least a part of an ink transfer characteristics control area between an ink scraping-off point of the doctor blade on the plate surface and a pressing point of the impression cylinder on the plate surface.

A gravure offset printing apparatus includes two clamps, a printing roller and a driving device. The two clamps are applicable to clamp individually two opposing ends of a blanket. The printing roller having an axial direction parallel to a first direction is disposed between the two clamps. The blanket wraps part of a radial periphery of the printing roller. The driving device is to drive the two clamps to undergo reverse motions so as to displace the blanket, and the blanket further rotates the printing roller. A gravure module, disposed on a platform of the gravure offset printing apparatus, has a groove for containing an offset ink. While the two clamps pull the blanket to undergo the reverse motions, a surface of the blanket contacts the gravure module so as to adhere the offset ink on the surface of the blanket.

There is described a combined printing press (10; 10*) for the production of security documents, in particular banknotes, comprising a screen printing group (2; 2*) and an intaglio printing group (3) adapted to process substrates in the form of individual sheets or successive portions of a continuous web. The screen printing group (2; 2*) is located upstream of the intaglio printing group (3) and comprises at least one screen printing unit (20; 20*) designed to print a pattern of optically-variable ink onto one side of the substrates, which optically-variable ink contains flakes that can be oriented by means of a magnetic field. The screen printing group (2; 2*) further comprises a magnetic unit (24; 24*) located downstream of the screen printing unit (20; 20*), which magnetic unit is designed to magnetically induce an optically-variable effect in the pattern of optically-variable ink applied by the screen printing unit (20; 20*). The screen printing group (2; 2*) further comprises at least one drying/curing unit (25, 28; 25*, 28*) designed to dry/cure the pattern of optically-variable ink in which the optically-variable effect has been induced by the magnetic unit (24), prior to transfer of the substrates to the intaglio printing group (3).