System and method for setting up a printing press
First Claim
1. A system for setting up a printing station, the printing station comprising at least one adjacent pair of printing rollers, said at least one adjacent pair of printing rollers including at least one ink transferring roller and an impression roller, the system comprising:
- a camera for detecting the partial presence or absence of a representative impression printed on a print material, said representative impression being printed on said print material by transferring a print liquid from an ink tank to said print material, through said printing rollers;
an actuator interface, coupled with at least one actuator, for directing said at least one actuator to move at least one printing roller of said printing station, to change the distance between rotation axes of said at least one adjacent pair of said printing rollers; and
a processor coupled with said camera and with said actuator interface, for at least one of said adjacent pair of said printing rollers, said processor receiving an output from said camera, said processor determining a no-print threshold distance according to said output from said camera said no-print threshold distance being a minimal distance between said rotation axes of said at least one adjacent pair of said printing rollers, at which no print liquid is transferred to said print material, which is a minimum distance increment which the actuator can controllably adjust from a maximum distance between said rotation axes of said adjacent pair of printing rollers at which a partial presence of said representative impression is generated, said processor directing said actuator via said actuator interface to set the distance between said at least one adjacent pair of said printing rollers to a respective working distance, the respective working distance being at a predetermined displacement from said no-print threshold.
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Accused Products
Abstract
A system for setting up a printing station (136), the printing station (136) includes printing rollers (110, 114, 116), the printing rollers (110, 114, 116) including at least one ink transferring roller (110, 114) and an impression roller (116). The system includes a camera (104), an actuator interface (106) and a processor (102), the actuator interface (106) being coupled with at least one actuator (108, 112), the processor (102) being coupled with the camera (104) and with the actuator interface (106), the actuator interface (106) directing the at least one actuator (108, 112) to move at least one printing roller (110, 114, 116) of the printing press (1OO). The processor (102) receives an output from the camera (104), the processor (102) determining at least one no print threshold respective of each adjacent pair of the printing rollers, according to the output respective of the absence or presence of the representative impression (132). In a setup pattern printing zone (134) of the print material (118), the at least one no print threshold is defined as the minimal distance between the rotation axes (122, 128, 130) of each adjacent pair of the printing rollers, at which no print liquid is transferred to the print material (118).
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Citations
26 Claims
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1. A system for setting up a printing station, the printing station comprising at least one adjacent pair of printing rollers, said at least one adjacent pair of printing rollers including at least one ink transferring roller and an impression roller, the system comprising:
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a camera for detecting the partial presence or absence of a representative impression printed on a print material, said representative impression being printed on said print material by transferring a print liquid from an ink tank to said print material, through said printing rollers; an actuator interface, coupled with at least one actuator, for directing said at least one actuator to move at least one printing roller of said printing station, to change the distance between rotation axes of said at least one adjacent pair of said printing rollers; and a processor coupled with said camera and with said actuator interface, for at least one of said adjacent pair of said printing rollers, said processor receiving an output from said camera, said processor determining a no-print threshold distance according to said output from said camera said no-print threshold distance being a minimal distance between said rotation axes of said at least one adjacent pair of said printing rollers, at which no print liquid is transferred to said print material, which is a minimum distance increment which the actuator can controllably adjust from a maximum distance between said rotation axes of said adjacent pair of printing rollers at which a partial presence of said representative impression is generated, said processor directing said actuator via said actuator interface to set the distance between said at least one adjacent pair of said printing rollers to a respective working distance, the respective working distance being at a predetermined displacement from said no-print threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for setting up a printing press, the printing press including at least one printing station, the at least one printing station comprising at least one adjacent pair of printing rollers, said at least one adjacent pair of printing rollers including at least one ink transferring roller and an impression roller, the system comprising:
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at least one camera for detecting the presence or absence of at least one representative impression on said print material, said at least one representative impression being respective of a respective one of said at least one printing station, said at least one respective representative impression being printed on said print material by transferring a print liquid from at least one ink tank to said print material, through said printing rollers; an actuator interface, coupled with at least one actuator, for directing said at least one actuator to move at least one printing roller of said printing station, to change the distance between rotation axes of said at least one adjacent pair of said printing rollers; and a processor coupled with said at least one camera and with said actuator interface, for at least one of said adjacent pair of said printing rollers, said processor receiving an output from said at least one camera, said processor determining a no-print threshold distance respective of said at least one printing station according to said output from said camera, said respective no-print threshold being a minimal distance between said rotation axes of said at least one adjacent pair of said printing rollers at which no print liquid is transferred to said print material, which is a minimum distance increment which the actuator can controllably adjust from a maximum distance between said adjacent pair of printing rollers at which a partial presence of said representative impression is generated, said processor directing said actuator via said actuator interface to set the distance between said at least one adjacent pair of said printing rollers to a working distance, the working distance being at a predetermined displacement from said no-print threshold. - View Dependent Claims (14, 15, 16)
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17. Method for setting up a printing press, the printing press including at least one printing station, the printing station comprising at least one adjacent pair of printing rollers, said at least one adjacent pair of printing rollers including at least one ink transferring roller and an impression roller;
- the method comprising the procedures of;
predetermining a respective working distance displacement from a respective no-print threshold distance for at least one adjacent pair of said printing rollers; attempting to print a setup pattern in a setup pattern printing zone of a print material of said printing press, said setup pattern printing zone including at least one representative impression, each of said at least one representative impression being associated with a respective one of said at least one printing station; for each of said at least one printing station, determining a no-print threshold distance respective of said at least one pair of adjacent printing rollers, by varying the distance between the rotation axes of said at least one pair of adjacent printing rollers, and by detecting total absence and partial presence of said representative impression, said no-print threshold distance being a minimal distance between said rotation axes, at which no print liquid is transferred to said print material, which is a minimum distance increment which can be controllably adjusted from a maximum distance between said rotation axes of said adjacent pair of printing rollers at which a partial presence of said representative impression is generated; and setting the distance between said at least one adjacent pair of said printing rollers to said respective working distance. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
- the method comprising the procedures of;
Specification