摘要:
Systems and methods for aligning preprinted images on a roll of substrate to the moving components of a web press are disclosed. A method in accordance with one embodiment includes determining the speed of the moving components of the press, determining the speed of the web of preprinted images and adjusting the speed of the web of preprinted image to match the speed of the web. In particular embodiments, a press which produces rolls of preprinted material can be modified to change the equivalent cutoff length of the press. In further embodiments, a method of pasting new rolls of material to expiring rolls of material is accomplished by modulating the drive speed of the new roll of material to match the expiring roll of material while at the same time aligning the images on the new roll with the expiring roll.
摘要:
The invention relates to an arrangement for processing a paper web having a low surface area density not exceeding 70 g/m2, in particular a cigarette paper web, comprising: an input side, over which the paper web is fed into the arrangement; an output side, over which the paper web leaves the arrangement, wherein the paper web passes the arrangement from input side to output side in a direction of conveyance; a device (5) downstream of the input side, in particular a printing unit, preferably a gravure printing unit, for applying a liquid printing medium to the paper web; a first drying station (7) following the applying station in direction of conveyance, in particular hot-air drying, for drying the printing medium applied to the paper web; a device (9) following the first drying in direction of conveyance for moistening the paper web and a second drying station (11) following the moistening device in direction of conveyance, by which the moistened paper web is dried.
摘要翻译:本发明涉及一种用于处理具有低于70g / m 2的低表面积密度的纸幅,特别是卷烟纸幅的布置,包括:输入侧,纸幅通过该输入侧被馈送到该布置中; 输出侧,纸幅离开布置,其中纸幅沿输送方向从输入侧传送到输出侧; 输入侧下游的装置(5),特别是用于将液体印刷介质施加到纸幅的印刷单元,优选凹版印刷单元; 第一干燥站(7),其沿着运送方向,特别是热空气干燥方式在施加工位之后,用于干燥施加到纸幅上的打印介质; 在沿着输送方向进行第一次干燥以湿润纸幅之后的装置(9)和沿着输送方向的湿润装置之后的第二干燥站(11),通过该装置干燥湿纸巾。
摘要:
The letterpress printing machine includes an impression cylinder (8), at least one inking device (11, 12, 13) with an inking train comprising inking rollers (25, 26, 28) and at least one letterpress form cylinder (14, 15, 16) inked by said at least one inking device (11, 12, 13). The at least one letterpress form cylinder (14, 15, 16) is driven by first drive means (30), whereas the at least one inking device (11, 12, 13) is driven by second drive means (31, 32, 33), the second drive means (31, 32, 33) being mechanically independent from the first drive means (30). A control unit is coupled to the second drive means (31, 32, 33) to adjust a circumferential speed of the inking rollers (25, 26, 28) with respect to a circumferential speed of the letterpress form cylinder (14, 15, 16) so as to adjust deposition of ink by the inking device (11, 12, 13) on the letterpress form cylinder (14, 15, 16). At least one of letterpress form (14, 15, 16) cylinder is preferably a numbering cylinder for numbering printed sheets or webs.
摘要:
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 (β) with respect to the horizontal plane (P0).
摘要:
A variable cutoff printing unit is provided including a first upper plate cylinder carrying a first upper image, a first upper blanket cylinder including a first upper blanket print area for transferring the first upper image to a web and a first upper blanket non print area, a second upper plate cylinder carrying a second upper image, a second upper blanket cylinder including a second upper blanket print area for transferring the second upper image to the web and a second upper blanket non print area, a first lower plate cylinder carrying a first lower image, a first lower blanket cylinder including a first lower blanket print area for transferring the first lower image to the web and a first lower blanket non print area, a second lower plate cylinder carrying a second lower image and a second lower blanket cylinder including a second lower blanket print area for transferring the second lower image to the web and a second lower blanket non print area.
摘要:
A method and apparatus herein supply one or more media characteristics of a continuous media material (such as printing media) being supplied to rollers of an apparatus (such as a printing apparatus). The method and apparatus adjust the position of at least one of the rollers/shafts, relative to other rollers/shafts, based on the media characteristics to cause the media material to exhibit a target resonance frequency when being processed through the rollers. The method and apparatus can also identify excitation frequencies of vibrations produced by the apparatus as the apparatus feeds the continuous media material along the rollers and set the target resonance frequency at a value that is different from the excitation frequencies to prevent the apparatus from exciting the continuous media material at or near a resonant frequency of the processing system transporting the continuous media material.
摘要:
A rotary press including a plurality of printing groups each with a plate cylinder and a blanket cylinder arranged in the machine frame such that respectively two blanket cylinders are configured to be leaned against each other and, in this way, a paper web that is guidable between the blanket cylinders is printable on both sides. Furthermore, the press includes inking units for inking the printing groups and damping units for applying a damping medium. The inking units are configured such that, with at least some of the inking units, two plate cylinders and thus two blanket cylinders at a time are able to be inked up. In this way, a compact, space-saving and economical design of the press is achieved.
摘要:
A web offset printing press that prints and processes at least one material web and has printing units and/or printing unit assemblies, at least one folder, and transport elements operates by transporting the at least one material web by the transport elements through a web of the printing press into the at least one folder, electrically driving the at least one folder, the printing units and/or printing unit assemblies and the transport elements at least partially mechanically independently of each other, and synchronizing during printing operation via specified setpoints values of at least one master axis with an electronically generated synchronization clock, and starting from a initial state of the at least one folder in which the master axis and/or condition of motion of the folder are independent of each other, adapting by the at least one folder its initial state to or synchronizing by the at least one folder its initial state with setpoint value assignments of the master axis, by performing compensating motions.
摘要:
A web offset printing press that prints and processes at least one material web and has printing units and/or printing unit assemblies, at least one folder, and transport elements operates by transporting the at least one material web by the transport elements through a web of the printing press into the at least one folder, electrically driving the at least one folder, the printing units and/or printing unit assemblies and the transport elements at least partially mechanically independently of each other, and synchronizing during printing operation via specified setpoints values of at least one master axis with an electronically generated synchronization clock, and starting from a initial state of the at least one folder in which the master axis and/or condition of motion of the folder are independent of each other, adapting by the at least one folder its initial state to or synchronizing by the at least one folder its initial state with setpoint value assignments of the master axis, by performing compensating motions.
摘要:
A printing for printing a web of paper is provided. The printing unit includes a frame and at least an upper printing group and a lower printing group. The printing unit has at least a throw-on configuration, an idle throw-off configuration and a blanket-changing throw-off configuration. In the blanket-changing throw-off configuration, the blanket cylinder of the upper printing group has been moved upwards relative to the position which it occupies in the throw-on configuration and in which the blanket cylinder of the lower printing group has been moved downwards relative to the position which it occupies in the throw-on configuration, so that an adequate space is provided between the blanket cylinders to allow a web of paper printed by another printing unit to pass between them.