摘要:
A printing machine with at least one inking unit which has at least two cylinders which are set against each other during the printing operation and can be rotated by at least one drive. The printing machine is provided with sensors for recording parameters of the rotary motion of the cylinders such as the torque and speed. A setting mechanism is provided for setting the at least two cylinders against each other in radial direction. The control unit is configured to trigger the setting mechanism to set the at least two cylinders against each other. The at least two cylinders are brought to different circumferential velocities and set against each other. The relative position of the two cylinders is recorded or maintained when at least one parameter of the rotary motion of the at least two cylinders exceeds a threshold value.
摘要:
A printing machine with at least one inking unit which has at least two cylinders which are set against each other during the printing operation and can be rotated by at least one drive. The printing machine is provided with sensors for recording parameters of the rotary motion of the cylinders such as the torque and speed. A setting mechanism is provided for setting the at least two cylinders against each other in radial direction. The control unit is configured to trigger the setting mechanism to set the at least two cylinders against each other. The at least two cylinders are brought to different circumferential velocities and set against each other. The relative position of the two cylinders is recorded or maintained when at least one parameter of the rotary motion of the at least two cylinders exceeds a threshold value.
摘要:
A method for registering a rotary press for a printing process, in which “n” inking systems (Fn) each produce monochrome printed images and print one on top of the other thereby producing n-colored printed images, includes producing the images of a printed material with at least one sensor station, recording information on rotary movements of printing plate cylinders (Dn), and using the images and the information to produce correction signals which actuate the cylinders until a deviation of the images of the respective inking systems from a desired position on the material lies within a defined range of tolerance values. During the registering method, one printing plate cylinder at a time is in the printing position, the sensor station produces the printed images, and the correction signals are obtained based on the image produced by the respective cylinder and the information on the rotary movements of at least one cylinder.
摘要:
A multi-color rotary printing machine has one printing plate support assigned to the colors that are transferred onto the print substrate. This printing plate support supports a printing plate and is attached to a mandrel or a cylinder of a rotary printing machine in order to transfer the print image onto the print substrate. The rotary printing machine has register devices that determine the position of the printing plates with respect to one another and that have sensors to determine the positions of the printing plate support in the printing machine.
摘要:
A process for adjusting the print image of a rotating machine is described. The rotation printing machine is equipped with in transfer rollers (F, K) and actuators assigned to them, with which it is possible to change the position (x) of the rollers (F, K). The new and inventive element of this process is that during the printing operation, at least one camera records the intensity of the light reflected from the printed material. The camera also feeds the recorded measured values to a control and regulation unit that compares the recorded measured values with set values and generates corrective signals for the actuator of at least one part of the rollers involved in the printing process. Based on the corrective signals, the actuator of the relative position of the roller assigned to it is changed till the measured values once again lie within a tolerance range.
摘要:
A process for adjusting the print image of a rotating machine equipped with transfer rollers and actuators assigned to them includes changing the position of the rollers. During the printing operation, at least one camera records the intensity of light reflected from the printed material. The camera also feeds the recorded measured values to a control and regulation unit that compares the recorded measured values with set values, and generates corrective signals for the actuator of at least one part of the rollers involved in the printing process. Based on the corrective signals, the actuator of the relative position of the roller assigned to it is actuated until the measured values once again lie within a tolerance range.
摘要:
Introduced are a device and a process for setting the printed image of a rotary press by adjusting the relative position of the rollers (3, 7, 8) involved in the ink transfer. In this respect at least one part of these rollers (7, 8) can be moved toward each other both together and also independently of each other by means of their own actuating drives (M1 to M4), so that the rollers (3, 7, 8) involved in the printing process can be set into motion in relation to each other, In addition, there is at least one camera (K) that scans the printed image (10) on the printed material web (17) and that feeds the images shot in succession to an electronic control and regulating unit (13). This control and regulating unit (13) generates signals for the actuating drives of at least one part of the rollers (3, 7, 8) involved in the printing and inking process until or as the printed image is reproduced without area loss.