An apparatus is disclosed for printing images on generally cylindrical objects. The apparatus comprises an impression station that includes a movable imaging surface for bearing an ink image; and a transport mechanism for advancing the objects through the impression station, comprising a drive member rotatably connected to a plurality of rotatable mandrels, each for mounting a respective one of the objects, the transport mechanism being configured to cause each object to rotate during passage through the impression station such that, within a nip region of the impression station, the surface of the object makes rolling contact with the imaging surface, thereby causing the ink image to be impressed on the object. An impression platen is provided opposite the imaging surface within the nip region, the impression platen being configured to apply a force, directly or indirectly, to the objects to ensure rolling contact between the objects and the imaging surface.

An oscillating roller system for a beverage can decorator is driven back and forth by a cam follower. A cam body having a cam is mounted to a frame of the inker system. Three oscillating cam roller assemblies are positioned about the cam body. Rotation of the cam oscillates the cam followers for each one of the oscillating rollers. Bearings of the oscillating roller assemblies includes an inlet gallery and outlet gallery for a closed loop lubrication system. The rollers are water cooled.

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).

An apparatus is disclosed for printing images on generally cylindrical objects. The apparatus comprises an impression station that includes a movable imaging surface for bearing an ink image; and a transport mechanism for advancing the objects through the impression station, comprising a drive member rotatably connected to a plurality of rotatable mandrels, each for mounting a respective one of the objects, the transport mechanism being configured to cause each object to rotate during passage through the impression station such that, within a nip region of the impression station, the surface of the object makes rolling contact with the imaging surface, thereby causing the ink image to be impressed on the object. An impression platen is provided opposite the imaging surface within the nip region, the impression platen being configured to apply a force, directly or indirectly, to the objects to ensure rolling contact between the objects and the imaging surface.

A print quality examination device is provided in a printing machine (1) provided with a printing unit (3) that performs printing on a mirror-reflection member (5a) of a sheet (5) to which the mirror-reflection member (5a) is added. The print quality examination device of the printing machine is provided with an examination camera (18a) that images a picture printed on the sheet (5), a light source (18h) that irradiates the sheet (5) with light, and a print quality examination unit (18g) that examines the quality of the picture printed by the printing unit (3) based on image data imaged by the examination camera (18a). The examination camera (18a) or the light source (18h) is configured to be movably supported on an arc about a detection point (P) imaged by the examination camera (18a) for the sheet (5).

Plate cylinder driving devices of a printing machine are provided with a drive shaft driving the plate cylinder, a drive helical gear fixed to the drive shaft, and an anti-backlash helical gear rotatably connected to the drive shaft and is biased by at least a spring towards a direction for preventing backlash. Both the drive helical gear and the anti-backlash helical gear are engaged with the main gear, and a plate provided with plural holes accommodating rollers is provided between the drive helical gear and the anti-backlash helical gear. Friction between the anti-backlash gear and the drive gear is reduced by a simple mechanism in the plate cylinder driving devices in a printing machine.

The invention relates to an apparatus (10, 80) and method (160) for cutting, printing or embossing a continuous sheet (26) of material. The apparatus (10, 80) comprising a tool element (12), at least two anvils 14, 16 which are co-operable with the tool element (12), and a phase adjustment device (24). The tool element (12) is configured to have a constant surface speed during operation of the apparatus (10, 80). The apparatus (10, 80) is adapted to receive the continuous sheet (26) at a constant speed into the apparatus (10, 80), and being adapted to output the continuous sheet (26) at a constant speed from the apparatus (10, 80). The phase adjustment device (24) is operable to adjust a speed of the continuous sheet (26) within the apparatus (10, 80) in order to adjust a phase of alternate parts of the continuous sheet (26) to be cut, printed or embossed by each anvil (14, 16) as it co-operates with the tool element (12).

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.

The present application discloses a screen printing device, comprising: a transport mechanism, which is used to carry and transport a plate to be printed disposed on the transport mechanism; a rotating frame located above the transport mechanism, which is used for winding a screen and driving the screen rotation; and a glue container located in the rotating frame and disposed to be independent of the rotating frame, wherein a lower portion of the glue container is provided with a glue outlet and a scraper, and the scraper is located beside the glue outlet. Since the screen printing device adopts a rolling printing mode, the tension generated by each position of the screen at the scraper is the same, thereby avoiding the poor printing uniformity due to the tension difference during the printing process.

A numbering unit (1, 101, 102), comprising an upper part (2, 211, 212) and a lower part (3), comprises a universal lower part (3) which is configured to receive both an upper part (212) of a vertical numbering unit (102) and an upper part (211) of a horizontal numbering unit (101). Further objects of the invention are a universal lower part (3) for a numbering unit (1, 101, 102), an upper part (212) for a vertical numbering unit (102), an upper part (211) for a horizontal numbering unit (101), a set comprising a universal lower part (3), at least one vertical upper part (212), and at least one horizontal upper part (211), and a numbering machine comprising a numbering unit (1, 101, 102) according to the invention, or comprising a set according to the invention.