Abstract:
A gravure printing machine having a device (14, 16) for applying ink onto a printing cylinder (10), including an ink supply system (16); wherein a stripping device (14) adapted to strip-off a layer of air that has been entrained by the printing cylinder (10) is arranged at the periphery of the printing cylinder (10) in relation to the ink supply system (16) in such a manner that the printing cylinder (10) will not come into substantial contact with air in a range between the stripping device (14) and the ink supply system.
Abstract:
A device for handling sleeves (20) for cylinders of printing presses, wherein a carrying tube (26) is provided, on which a mounting device (28), engaging these sleeve (20), is disposed for mounting the sleeve in a position, which is aligned coaxially with the carrying tube.
Abstract:
A device for supporting a shaft, e.g., for the pressure roller of a printing machine, which is subjected to radial impact forces and which is slightly adjustable between a working position and a rest position. The shaft bearings are carried in bearing jewels guided in the bore of a fixedly arranged bearing block with the aid of a guide bolt. Two support surfaces for the bearing jewels are inclined relative to a plane which is perpendicular to the direction of adjustment of the shaft, and are pressed against corresponding support surfaces on the bearing block when the shaft is in working position.
Abstract:
A method for shifting a doctor blade in its longitudinal direction, the doctor blade being set against a cylinder of a printing machine, wherein the shift movement of the doctor blade is such that, for most of the time of the print operation, the shift velocity of the doctor blade is in a range from 0 to 0.1 m/s, and a printing machine having a doctor blade assembly, including a doctor blade arranged to be set against a cylinder, and a shift mechanism for shifting the doctor blade in its longitudinal direction, such that the shift mechanism is adapted to execute the method.
Abstract:
A method of printing with a rotary printing press having a plurality of printing cylinders that are adapted to be adjusted on and off from a running web, with a length of a printed image being larger than a peripheral length of the largest one of the printing cylinders, the method including the steps of subdividing the printed image into elements, printing these elements with different printing cylinders, and periodically shifting at least one of the printing cylinders off from the web, each time for at least a duration of one turn of the printing cylinder.
Abstract:
A cleaning device for cleaning blocks clamped on a rotationally driven printing cylinder of a printing machine, the cleaning device including a rotatable cleaning roller, cleaning organs disposed on a periphery of the cleaning roller and which can be placed in contact with a peripheral surface of a printing cylinder, with angular positions of the cleaning organs varying in an axial direction of the cleaning roller, and the cleaning organs, in each angular position, are disposed on the periphery of the cleaning roller in only a single axial section of the cleaning roller, and control equipment for locking the cleaning organs in different angular positions.
Abstract:
Apparatus for detecting collisions in a printing machine having at least one rotationally driveable rotary body (18; 20) and an actuator (28; 30) for adjusting the rotary body in a direction normal to the axis of rotation, the apparatus including a torque sensor (T) and/or an angle increment sensor (&OHgr;) for detecting the driving torque and/or the rotary speed of the rotary body (18; 20), and a control unit (38) adapted to detect a collision of the rotary body with another component member on the basis of the signal of the torque or angle increment sensor and to stop the actuator (28; 30) thereupon.
Abstract:
A bag includes two parallel walls, each with two side edges each; a bottom connected with lower ends of the two walls and which can be folded in a plane of the walls; and two carrying handles, which in each case have two parallel legs and one cross member connecting the two parallel legs and are fastened with fastening sections, formed at their legs, in each case to one of the walls of the bag and are folded back on themselves at fold lines, so that they do not protrude beyond the walls and are detachably fixed to the bag, the cross members of the two carrying handles being offset from each other in the folded-back position by an amount, which corresponds at least to the width of the cross members and the fold lines of the two carrying handles being mutually offset by about half this amount, and the carrying handles being mutually offset in a direction perpendicular to the side edges to such an extent, that the parallel legs of the two handles do not overlap one another.
Abstract:
A method for shifting a doctor blade in its longitudinal direction, the doctor blade being set against a cylinder of a printing machine, wherein the shift movement of the doctor blade is such that, for most of the time of the print operation, the shift velocity of the doctor blade is in a range from 0 to 0.1 m/s, and a printing machine having a doctor blade assembly, including a doctor blade arranged to be set against a cylinder, and a shift mechanism for shifting the doctor blade in its longitudinal direction, such that the shift mechanism is adapted to execute the method.
Abstract:
A method of manufacturing an anilox roller, in particular for a flexographic printing press, the anilox roller comprising a cylindrical core and a sleeve detachably held on the core and having at its surface an anilox layer with a grid pattern of pits, including the steps of mounting the sleeve on the core, and then forming the anilox layer on the sleeve.