摘要:
A cleaning roller to be brought into contact with a medium includes a rotary shaft having a first end portion and a second end portion, and a sticky roller attached to the rotary shaft. A cleaning roller holder includes a first bearing portion configured to restrict a movement range of the first end portion and a second bearing portion configured to restrict a movement range of the second end portion. In a state where the first end portion is disposed at the first bearing portion and the second end portion is disposed at the second bearing portion, the cleaning roller holder positions the cleaning roller in a detachable manner. The center of gravity of the cleaning roller is shifted from the center of the cleaning roller in the longitudinal direction toward the first end portion, and is in a range where the sticky roller exists in the longitudinal direction.
摘要:
Aspects of the present disclosure are directed to a cleaning apparatus for cleaning printing plates. In some embodiments, the cleaning apparatus may comprise a laser arrangement including a pulsed laser for generating laser pulses with pulse duration in the picosecond range. The cleaning apparatus may further comprise laser guidance means for guiding the laser pulses onto a path on a printing plate. Other aspects of the present disclosure are directed to a method including the steps of generating laser pulses with pulse duration in the picosecond range and guiding the laser pulses onto a path on the printing plate.
摘要:
A system and method is disclosed for cleaning an anilox roll and/or ink chamber of a converter. The system includes: a water supply adapted to supply water through an automatically controllable water supply valve to wash anilox roll and/or ink chamber; a cleaning solution supply adapted to supply a cleaning solution through an automatically controllable cleaning solution supply valve to clean the anilox roll and/or ink chamber; and a programmable controller programmed to operate the automatically controllable valves so as to deliver a timed sequence of water and cleaning solution to the cleaning part upon the occurrence of a cleaning cycle initiation condition.
摘要:
A coating unit is located after a sheet-fed digital printer on a manufacturing line. As a response to a workpiece entering the coating unit from the printer, coating substance is dosed onto a plate cylinder, and said plate cylinder is rotated to transfer said coating substance onto the workpiece, which is then transferred further on the manufacturing line. As a response to a first time limit expiring after transferring the workpiece further without a subsequent workpiece entering the coating unit, the rotation of the plate cylinder is stopped.
摘要:
A system and method are provided for providing an improved inker unit surface cleaning and conditioning system, including in a single anilox chamber blade system, for improving image quality, including eliminating ghosting, in a proposed variable data digital lithographic image forming architecture. Techniques are provided to remove acquired oil from an inking member. A particularly-configured containment encloses a cleaner (disturber) roller to emulsify the acquired oil on the inking roller. The cleaner roller is preferably configured with a pliable surface including a silicon roller surface over a porous base. The silicon roller (1) absorbs dampening solution oil; and (2) agitates ink that may be still held in certain cells/cavities of the inking member or roller. In embodiments, a vacuum pressure is applied to the inside of the hollow cleaner roller to better remove the residual ink and dampening solution from the inking roller.
摘要:
An ink film thickness distribution correction method in an ink supply apparatus including an ink fountain storing an ink, a plurality of ink fountain keys, an ink fountain roller to which the ink is supplied from the ink fountain, an ink ductor roller to which the ink is transferred from the ink fountain roller, and an ink roller group including at least one ink form roller to which the ink transferred to the ink ductor roller is supplied. A throw-off operation of the ink form roller positioned at the end of the ink roller group is performed during test printing or final printing. An ink film thickness distribution correction apparatus is also disclosed.
摘要:
It is an object is to improve the cleaning effect, to reduce the cleaning time, and to reduce the consumption of cleaning water during cleaning of an inside of an ink chamber of a flexographic printing machine. For cleaning an ink chamber 20, purge air “a” is supplied from pipes 46a-b to the ink chamber 20, and an ink “f” is collected from an ink supply pipe 26 and an ink recovery pipe 36 to an ink can 30. Subsequently, cleaning water “w” is supplied from the pipes 46a-b to the ink chamber 20, as well as defining a cleaning water circulatory passage 44 constructed from a three-way valve 24, an ink supply port 22, the ink chamber 20, excessive ink recovery ports 32, the ink recovery pipe 36, and a connecting pipe 40 for circulating cleaning water “w” through the circulatory passage 44 to clean inside the ink chamber 20. At the same time, compressed air “a” is supplied from a compressed air supply pipe 424 of an air gun 42 to generate bubbles in the cleaning water “w”, thereby improving the cleaning effect on the ink chamber 20 by the agitating action and the turbulent flow generating action of the bubbles.
摘要:
A method, at least partially implemented by means of processor-executable instructions, for exchanging colors within a color station of a printing press is disclosed. In one implementation of the method, a cleaning tank is operated within the color station, thereby cleaning the color station. Additionally, a new color of ink is built within the cleaned color station.
摘要:
Provided is an offset printer configured to increase or maximize productivity and yield. The offset printer includes a printing roller, a coating unit configured to apply a printing substance to the printing roller, a patterning unit configured to pattern the printing substance applied to the printing roller from the coating unit, a printing unit configured to transfer the patterned printing substance to a printing medium, and a cleaning unit configured to clean the printing substance remaining on the printing roller by a dry cleaning method.
摘要:
The present invention comprises a method and apparatus for cleaning various printing press components. The invention comprises hard and semi-hard scrapers, and allows the use of soft scrapers, to remove printing residues by lamination in conjunction with one or more cleaning agents. The cleaning agents can include gelled and or milky compositions. The gelled cleaning compositions of the present invention reduce or eliminate the emission of volatile organic compounds. The present invention can be used in conjunction with, or instead of, conventional de-inking apparatuses.