摘要:
The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device. Downstream, printing means print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device. A transfer device transports the sheets to a stock of three stacks one of which collects the defective sheets. A marking device affix a mark on the sheets considered unsuitable during the quality control.
摘要:
The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device (1–3). Downstream, printing means (12–16) print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device (17). A transfer device (18) transports the sheets to a stock of three stacks (21, 22, 23) one of which collects the defective sheets. A marking device (19) affix a mark on the sheets considered unsuitable during the quality control.
摘要:
The invention concerns an installation comprising means controlling printing quality supplied by a printed sheet feeding device (1-3). Downstream, printing means (12-16) print serial numbers and/or affix other elements. The quality of the number printing is controlled by a control device (17). A transfer device (18) transports the sheets to a stock of three stacks (21, 22, 23) one of which collects the defective sheets. A marking device (19) affix a mark on the sheets considered unsuitable during the quality control.
摘要:
The web fed or sheet fed printing machine for security papers, in particular banknotes, possesses a principal printing group. It further has an additional, independent printing group (20) placed upstream of the principal printing group in the feed direction of the paper and allowing a pattern in at least one predetermined color to be printed over the entire width of the paper before the paper passes into the principal printing group.
摘要:
The invention relates to a device for controlling material comprising a sensor device and a lighting device, whereby the material which is to be controlled is guided on a transparent drum.
摘要:
The machine comprises at least a printing cylinder (4), an inking cylinder (5) and a chain gripper transporting system (2,3) with grippers (17). The printing cylinder (4) comprises at least one transversal pit (7) for receiving said chain gripper system (3) such that the inking cylinder (5) inks the planar object (1) while said object (1) is held by said chain gripper system (3).
摘要:
The blanket cylinder for an intaglio printing machine comprising a plate cylinder carrying printing plates with engravings corresponding to a specific intaglio structure to be printed on a substrate, and cooperating with an impression cylinder, the blanket cylinder having at least one blanket on which the ink in the different colours is deposited by selector cylinders, each selector cylinder having reliefs with contours corresponding to the area of the intaglio structure to be inked with said colour, the at least one blanket (9) being made of several successive layers (30,31,32) each with different properties.
摘要:
The machine has at least a cutting tool (12), a transfer system (7,8) holding said substrate (1) and driving said substrate (1) along a determined direction. The cutting tool (12) comprises a laser beam (13) that can be moved in two perpendicular directions and evacuation means (11,15) to evacuate a cut part of said substrate (1).
摘要:
The numbering box for typographic numbering in sheet or web fed printing machines, said box numbering with p digits k*n items on said sheets or web for allowing a sequential collecting of said items in the finishing and collating process of layers of q sheets or of web cut into layers of q sheets, wherein said box carries out a purely sequential actuation for digits 1 to s, where 10S is smaller or equal to q, a purely individually settable actuation for digits s+1 to r, where the maximum number printable by digits 1 to s and s+1 to r is smaller or equal to k*n*q, and a sequential actuation for digits r+1 to p.
摘要:
The invention relates to an impression cylinder (1) intended for a sheet-fed machine and having at least one cylinder gap (3) in which sheet grippers (4) are arranged in such a manner that, when closed, they do not project over the envelope of the peripheral area of the impression cylinder (1). The cylinder gap (3) is provided with a cover (7) which can be adjusted by a controlling unit (9, 10, 11, 12) and is subsequently always in its closed position in which it completely covers the cylinder gap (3), when said gap (3) passes through the nip. Consequently, the impression cylinder rolls with a continuous, closed peripheral area on the cylinder printing the image. In the zones where the sheet is transferred to and from the impression cylinder (1), the cover (7) (preferably controlled by a fixed cam (11) while the cylinder is rotating) is opened to such an extent that the sheet grippers (4) can move into the open position thereof to pick up or release a sheet.