Abstract:
PROBLEM TO BE SOLVED: To provide a method for detection of occurrence of printing errors on printed substrates during the process thereof on a printing press, an expert system and the printing press including the expert system.SOLUTION: The functional component of the printing press is provided with a plurality of sensors to monitor the behavior of the printing press during processing the printed substrate. To decide the occurrence of the characteristic behavior of the printing press which leads or is likely to lead to the occurrence of the printing error on the printed substrate, or of the characteristic behavior of the printing press which leads or is likely to lead to the excellent printing quality of the printed substrate, the method including the process for performing the in-line analysis of the behavior of the printing press is described. The performing of the fuzzy-pattern classification of the behavior of the printing press is preferably to be included by the in-line analysis of the behavior of the printing press. According to one embodiment of the proposed method, the in-line analysis of the behavior of the printing press is coupled with an in-line optical inspection of the printed substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for improving physical resistance of security paper and strengthening resistance of security paper to counterfeit.SOLUTION: There is described a process for producing security papers comprising a step of sealing a surface of the security papers by applying a protective pattern on the surface of the security paper. The step contains a step of printing the security papers by intaglio printing using an intaglio printing plate with engraved areas such that at least 80% of the whole surface of each security paper is covered with a combination of embossed intaglio patterns produced by engraved areas of the intaglio printing plate which are inked or flat intaglio patterns produced by unengraved areas of the intaglio printing plate which are inked after wiping of the intaglio printing plate. At least a part of the embossed intaglio patterns and flat intaglio patterns is printed with a transparent or semi-transparent intaglio ink.
Abstract:
PROBLEM TO BE SOLVED: To provide a sheet processing machine suitable to a plurality of expected proper use environments, and to provide modules therefor.SOLUTION: The sheet processing machine includes a plurality of modules through which the sheets to be processed pass one after another. The modules each have a sheet input interface and/or a sheet output interface. In at least one of the modules, the sheet input interface and/or the sheet output interface can optionally be coupled to sheet output interfaces and sheet input interfaces, respectively, of at least two other modules.
Abstract:
PROBLEM TO BE SOLVED: To improve a well known machine and process in an ink supply system for an intaglio printing machine for printing a bill, valuable security such as a check, a passport, an ID and other similar articles.SOLUTION: A system for an intaglio printing machine includes at least a duct 1 for supply ink to a surface of an engraved selective ink supply cylinder 5. The selective ink supply cylinder, then, inks a surface of a plate cylinder 16 of the intaglio printing machine via a chevron roller 17. The chevron roller 17 includes a relief 18 corresponding to an engraving 27 to be inked on the plate cylinder 16. An ink supply system further includes a wiping system 8 for wiping the surface of the selective ink supply cylinder and recovering the wiped ink in the duct 1.
Abstract:
PROBLEM TO BE SOLVED: To improve the security of human intervening for maintenance purposes.SOLUTION: A sheet supply or web supply printing machine includes: a main unit (1); at least one mobile carriage (2) adapted to be coupled to the main unit for cooperation therewith during printing operations and to be moved away from the main unit during maintenance operations; a control unit for controlling displacement of the mobile carriage toward and away from the main unit (1); and an access zone (9, 9') surrounding at least partly the mobile carriage for allowing an operator to get access to the main unit and the mobile carriage; wherein the access zone lies outside the displacement path (10) of the mobile carriage. The printing machine further includes a detection means (11) for monitoring the access zone and detecting the presence of the operator within the access zone. The displacement of the mobile carriage is interrupted or prevented in the case that the presence of the operator within the access zone is detected by the detection means and before the operator intrudes in the displacement path of the mobile carriage.
Abstract:
PROBLEM TO BE SOLVED: To improve an inspection machine for a printed matter such as securities.SOLUTION: The inspection machine includes a supplier for supplying printed sheets; first, second and third sheet inspection units, and first and second transfer cylinders. The first inspection unit includes: a first inspection cylinder, first illumination means and a first camera, and the second and third inspection units are configured in the same way, and the first transfer cylinder, each inspection cylinder and the second transfer cylinder are installed in a state that they are directly brought into contact with each other, and each inspection unit and each transfer cylinder are arranged such that the sheets are extracted from each inspection cylinder only when inspection is completed by each inspection unit, and the first transfer cylinder, each inspection cylinder and the second transfer cylinder are arranged in a zigzag form such that the conveyance length of the sheets can be made optimal as predetermined sheet length between the input/output positions of the sheets, and the conveyance length of the sheets on each inspection cylinder is a little longer than the length of the sheets to be inspected.
Abstract:
PROBLEM TO BE SOLVED: To provide an intaglio printing press system that facilitates recto-verso intaglio printing of sheets.SOLUTION: First and second intaglio printing presses 1a, and 1b are operatively-coupled to one another by a sheet processing and transporting system 9. In the intaglio printing press system, the sheet processing and transporting system 9 includes an automated guided vehicle system for automatically transporting sheets from a sheet delivery station 8.1 of the first intaglio printing press 1a where recto printing is performed to a sheet feeding station 1.2 of the second intaglio printing press 1b where verso printing is performed.
Abstract:
PROBLEM TO BE SOLVED: To improve a well-known machine and a well known process in an ink supply system for an intaglio printing machine for printing a bill, securities such as checks, a passport, an ID, and other similar articles.SOLUTION: The system for the intaglio printing machine includes at least a duct 1 supplying ink on a surface of an engraved selective ink supply cylinder 5, and subsequently the selective ink supply cylinder supplies the ink on the surface of the plate cylinder 16 of the intaglio printing machine via a chevron roller 17. The chevron roller 17 has the relief 18 corresponding to the engraved part 27 to which the ink is supplied on the plate cylinder 16. Further the ink supply system includes a wiping-off system 8 wiping off the surface of the selective ink supply cylinder and collecting the wiped-off ink into the duct 1.
Abstract:
There is described a multicolour letterpress printing press, in particular a numbering press, comprising a printing group (50) with at least a first letterpress (e.g. numbering) cylinder (51) and a second letterpress cylinder (52) which are inked by an associated inking system (60, 71, 72, 81, 81 a, 81 b, 82, 82a, 82b). The inking system (60, 71, 72, 81, 81 a, 81 b, 82, 82a, 82b) comprises (i) a first inking device (81) supplying ink to a first chablon cylinder (71), (ii) at least a second inking device (82) supplying ink to a second chablon cylinder (72), and (iii) an ink-collecting cylinder (60) contacting the first and second chablon cylinders (71, 72) and the first and second letterpress cylinders (51, 52). The ink-collecting cylinder (60) collects a first ink pattern (A, D) from the first chablon cylinder (71) and a second ink pattern (B, C) from the second chablon cylinder (72). As a result, a first multicolour pattern of inks (A-D) is formed on the ink-collecting cylinder (60), which first multicolour pattern of inks (A-D) is transferred onto the first letterpress cylinder (51). The ink- collecting cylinder (60) further collects a third ink pattern (A, D ) from the first chablon cylinder (71) and a fourth ink pattern (B, C ) from the second chablon cylinder (72), thereby forming a second multicolour pattern of inks (A "D ) on the ink-collecting cylinder (60), which second multicolour pattern of inks (A "D ) is transferred onto the second letterpress cylinder (52).
Abstract:
There is described an intaglio printing press (1; 1 *) comprising a plate cylinder (8) carrying one or more intaglio printing plates, the plate cylinder (8) receiving ink from an inking system (9, 20, 23; 20*, 23*) having a plurality of chablon cylinders (23; 23*) transferring ink directly or indirectly onto the plate cylinder (8), the intaglio printing press (1; 1 *) comprising an adjustment system acting on the chablon cylinders (23; 23*) in order to compensate elongation of the one or more intaglio printing plates. The adjustment system comprises, for each chablon cylinder (23; 23*), an adjustable drive unit, which adjustable drive unit (25) is interposed between the chablon cylinder (23; 23*) acting as a rotating output body of the adjustable drive unit (25) and a driving gear (100) acting as a rotating input body of the adjustable drive unit (25). The adjustable drive unit (25) is designed to allow selected adjustment of a rotational speed of the chablon cylinder (23; 23*) with respect to a rotational speed of the driving gear (100). In an adjusting state of the adjustable drive unit (25), driving into rotation of the chablon cylinder (23; 23*) is adjusted over each revolution of the chablon cylinder (23; 23*) by means of an adjustment motor (300) of the adjustable drive unit (25). In a non-adjusting state of the adjustable drive unit (25), the adjustment motor (300) is inoperative and driving into rotation of the chablon cylinder (23; 23*) is performed exclusively mechanically via the adjustable drive unit (25), the chablon cylinder (23; 23*) rotating at a same rotational speed as the driving gear (100).