摘要:
A method for adjusting contact between two rollers of a printing mechanism of a rotary printing press, which rollers are adjustable relative to one another. The method includes separating the rollers so that a gap exists therebetween, inserting a piezofilm of known thickness into the gap between the rollers at one end of the rollers and moving the rollers toward one another on the one end until the piezofilm transmits an output signal when the two rollers first make contact. Then, the rollers are separated and the piezofilm is removed from the roller gap. The piezofilm is next inserted into the gap between the rollers at the other end of the rollers after which the rollers are moved toward one another at the other end until the piezofilm transmits an output signal when the rollers first make contact. The rollers are once again separated and the piezofilm removed from the roller gap. Finally, the rollers are adjusted toward one another at both ends by an amount corresponding to the piezofilm thickness.
摘要:
The invention relates to a method for printing printed material which is individualized with logistical printed image elements, wherein at least one printed image, particularly a static printed image, which is printed in a printing machine, is individualized by technically adding at least one dynamic logistical printed image element. According to the invention, data of the/each dynamic logistical printed image element is combined in such a way that the/each printed image and the/each logistical printed image element are automatically updated by comparing data between a data bank provided by a print job user and a data bank provided by a logistics provider prior to printing the printed material individualized with the/each logistical printed image element.
摘要:
The invention relates to a method for producing an RFID label using a printing method. The aim of the invention is to apply the required parts to the label in a simple manner, and preferably also to protect the antenna from mechanical damage. To this end, at least part of the antenna required for the operation of the label and part of the oscillating circuit is applied to the stock by means of sheet-fed offset printing or directly or indirectly by means of a relief-printing plate. In order to protect the oscillating circuit from damage, the application surface thereof is lowered, or the oscillating circuit and the antenna are lowered into the stock after the application process.
摘要:
A method for erasing the surface of a rewritable printing form within a printing press in which the form cylinder carrying the printing form rotates during the erasing process, wherein the erasure is performed over the course of two main erasing steps. That is, a first main erasing step is performed during the run-down of the form cylinder upon completion of a printing order, whereupon the second main erasing step performed, for which purpose the form cylinder is again driven after it has run down.
摘要:
A press unit of a press, in particular a web-fed rotary press, having at least one printing unit, the printing unit having at least one cylinder module comprising a form cylinder and a transfer cylinder and an inking module comprising an inking unit and, preferably, a damping unit. The inking module of the printing unit is arranged laterally beside the cylinder module of the printing unit, it being possible for the inking module of the printing unit to be moved translationally relative to the cylinder module of the printing unit in the axial direction of the cylinders of the cylinder module, in order to move the inking module of the printing unit between a printing position and a maintenance position.
摘要:
A method for operating a printing press for carrying out a forme change and a format change on a sleeve-based printing unit of the printing press, in which a rewritable or erasable printing sleeve is used as printing forme includes setting images on a printing sleeve outside the printing unit of the printing press, wherein the printing sleeve which has images set on it outside the printing unit is positioned on a forme cylinder of the printing unit together with a spacer sleeve which is adapted to the format to be printed, for carrying out the forme change and format change.
摘要:
A method for producing a printing plate, especially inside a printing press, wherein a printing plate with a rewritable surface is provided, and wherein to produce a permanent as well as an erasable image on the surface of the printing plate, the erasing of the surface and/or the imaging of the surface are carried out with the use of an atmospheric plasma.
摘要:
A printing unit having at least one press unit, the, or each, press unit having at least one form cylinder, a transfer cylinder, an inking unit and preferably a damping unit, and having at least one imaging device for imaging and/or de-imaging a rewritable and erasable printing form positioned on the form cylinder. The, or each, imaging device having at least one laser device for producing at least one laser beam and an optical device for focusing the, or each, laser beam on the printing form. At least the laser device of the, or each, imaging device is arranged at a distance from the respective form cylinder, it being possible for the, or each, laser beam produced by the laser device to be conducted via at least one optical fiber in the direction of the optical device of the imaging device positioned in the region of the respective form cylinder.
摘要:
Variable-format web-fed offset printing machine having printing-unit cylinders comprising core cylinders to which compressed air can be applied and onto which intermediate sleeves can be pushed axially and shrunk on radially. Each intermediate sleeve includes a carrier layer whose inner face rests on the core cylinder, a compressible intermediate layer, a transition layer, and a variable-thickness bridging layer, which ends with a covering layer to which a further surface like a printing plate or a rubber blanket can be fitted.
摘要:
A method of operating a printing machine and a printing machine apparatus in which basic knowledge about the interaction between operating media in the printing machine is obtained through printing trials or during production. This knowledge is stored in an expert system and made available for the printing operation or else for the production of the printing plate. The expert system is preferably a self-teaching system. For color reproduction, basic calibrations are carried out in a first quality step, in a second step, the imaging operation is adapted to the areas and half tones to be imaged, and ink-density regulation is carried out in a third step.