摘要:
A method for carrying out a printing correction and a device for this. A method for carrying out a printing correction is provided, a product being printed on during a processing procedure by a plurality of processing devices, positions of two printing marks A,B,C,D being recorded. The positions of the printing marks A,B,C,D are evaluated and an automated correction of the print is carried out in the light of the positions of the printing marks A,B,C,D, the correcting including a correcting of a printing length. Furthermore, an apparatus is provided for carrying out the method.
摘要:
A method for registering patterns on a web to provide independent scale control in both the lateral and longitudinal directions is provided. The method comprises routing the web over a first roller; routing the web over a second roller and stabilizing the web; applying a pattern to the web using process hardware; measuring registration of the pattern and providing an error signal; controlling lateral position error using the error signal; controlling longitudinal position error using the error signal; controlling lateral scale error using the error signal; and controlling longitudinal scale error using the error signal. The method provides independent scale control in both the lateral and longitudinal directions. Independent scale control avoids non-linear distortions otherwise imposed by attempting to accomplish both corrections by stretching the web in both directions.
摘要:
A web fed printing machine includes a web path provided between two sequentially disposed printing units and a misregistration detector for detecting misregistration in superimposition printing performed by the printing units. During superimposition printing, cylinder fine-move mechanisms finely move corresponding plate cylinders based on detected misregistration in order to adjust the registration. A web path length modification mechanism is provided in the web path. A control unit is connected to the web path length modification mechanism, the misregistration detector, and a paster. When a pasting signal is generated, the plate cylinder fine-move mechanisms stop making registration adjustment. At predetermined timing, the misregistration detector detects misregistration in printing performed by the printing units. The web path length modification mechanism performs a misregistration elimination action based on detected misregistration. Subsequently, the plate cylinder fine-move mechanisms resume making registration adjustment, and the web path length modification mechanism performs a return action.
摘要:
In order to improve a method for register correction in machines (1) for processing webs of material (2), in particular rotary printing presses, paper processing machines and sheet-fed printing presses, having at least one transport shaft (3, 4) and at least one processing shaft (5, 6, 7, 8) cooperating with it, each of which is driven, synchronized with one another, by its own individual drive mechanism (9) and of which at least one shaft (6, 7) obeys a chronological guide shaft function (12), which corresponds to an instantaneous position (13) of a guide shaft (L), and a plurality of register-tracking shafts (3, 4) are corrected in accordance with a scanning of register marks (14) of the web of material (2) relative to the guide shaft function (12), in such a way thatnullparticularly when there is a large number of shafts to be regulatednullit assures a greater degree of synchronicity of the shafts to be corrected and at the same time makes simple startup possible with comparatively little effort and expense for apparatus, it is proposed that for one group (15) of register-tracking shafts (3, 4), which correspond to one another in terms of the register correction, only one common scanning is effected, from which a common correction function (16) is derived that all the shafts (3, 4) of the group (15) obey.
摘要:
A device for adjusting a frame of a printing press carrying a conveyor belt relevant to printing modules in the three-dimensional axial directions. At least a First guide is provided on the frame for guiding a plate arranged on the frame in a horizontal direction x lengthwise to the frame by a first guiding component for adjusting the frame in the appropriate direction. Second guides are provided in a vertical direction y to the frame, on which two movable guiding components are positioned, and between the two guiding components, a third guiding component is arranged, which can be moved to the third guides on the second guiding components in the direction z transverse to a substantially horizontal plane of the frame.
摘要:
A device for adjusting a frame of a printing press carrying a conveyor belt relevant to printing modules in the three-dimensional axial directions. At least a first guide is provided on the frame for guiding a plate arranged on the frame in a horizontal direction x lengthwise to the frame by a first guiding component for adjusting the frame in the appropriate direction, whereby two walls perpendicular to the plate are arranged parallel to each other. Second guides are provided in a vertical direction y to the frame, on which two movable guiding components are positioned, and between the two guiding components, a third guiding component is arranged, which can be moved to the third guides on the second guiding components in the direction z to the flat surface of the frame.
摘要:
The present invention pertains to the coordination in good register of cylinders of a web-fed rotary printing press which print on a web, wherein a first cylinder printing on one side of the web is driven by a first motor and a second cylinder printing on the same side of the web is driven by a second motor and the angular position of the second cylinder is coordinated with the first cylinder in good register by a controller. At least one disturbance variable (v) is sent to a command variable (u2.soll) for the motor controller of at least the second cylinder to compensate a register deviation (Y2) of the second cylinder from the first cylinder, which register deviation is typical of the said disturbance variable (v).
摘要:
A method of printing using a press having first and second printing units and responsive to electronic data includes the steps of running the press to cause first and second printing units to produce first and second printed components, respectively, on a substrate, stopping the press and inspecting the first and second printed components to determine a degree of misregistration of the first printed component relative to the second printed component caused by substrate growth. Original electronic data representing an image to be printed by the press are modified in dependence upon the degree of misregistration. The press is subsequently operated in accordance with the modified electronic data to print the image with a reduced degree of misregistration.
摘要:
A method and apparatus for determining color registration in a multi-color printing press having a plurality of printing stations. A process black registration mark is formed in an identified area by positioning a plurality of color registration marks on top of each other. The process black registration mark is position in a portion of the image that is intended to be printed black, and preferably adjacent to a black ink image. The identified area is examined to determine whether the process black registration mark is properly positioned.
摘要:
An integrated and computer controlled printing press, inspection rewinder and die cutter system for manufacturing printed products from a web of material is provided, which generally comprises at least one rotary die cutter, a plurality of cameras, a plurality of networked computers electrically connected to the cameras for inspecting the print registers and the print to cut register of each product, and at least one monitor connected to the networked computers. The system uses an identification code for each product to precisely detect, track and record in a permanent format the defective and non-defective printed products at every stage of the manufacturing process and can also automatically adjust the die cutters to correct the cut to print registration in real time.