Abstract: An apparatus and method for forming a pattern is provided, to improve a yield by decreasing the tack time for cleaning a printing plate. The apparatus includes a stage; a substrate loaded on the stage; a printing plate positioned on the stage; a printing unit that prints a printing material patterned by a predetermined pattern of the printing plate on the substrate; and a removing unit having a film so as to remove the unused printing material of the printing plate.

Abstract: In order to create preconditions, in a web-fed rotary press, for good format variability of the printed products and economic utilization of the printing material, at least two printed pages of different heights are arranged in the circumferential direction on a form cylinder.

Abstract: A printing device (1) is disclosed for rotogravure printing machines comprising: a printing cylinder (3) with notches (50) for printing liquid, a rubber roller (4) for pushing paper web supports (2) against the cylinder (3) in order to print, and a scraper member (7) for cleaning the surface of the printing cylinder (3) of printing liquid not contained in notches (5); the scraper member (7) is equipped with thrusting members (9, 10) central therewith that thrust a central portion of the scraper member (7) towards the cylinder (3) in order to bend the scraper member (7) such that the bend in the scraper member (7) follows a bending to which the cylinder (3) is subjected upon the rubber roller (4) being pushed against the cylinder (3).

Abstract: In a rotary printing machine the printing cylinder (1) is supported on a flexible band (6) under tension, printing ink being introduced into the gap (8) between the band (6) and the printing cylinder. This facilitates the hydraulic mounting of the printing cylinder (1) while reducing the load on the cylinder shaft journal mounting (2) and prevents deformation of the cylinder, and also ensures even ink coverage of the printing cylinder surface.

Abstract: A doctor arrangement for a rotary intaglio printing machine comprises a doctor to remove excess ink from the plate cylinder. The doctor is in the form of a band which extends parallel to the axis of rotation of the plate cylinder against which it is pressed by a doctor bar. The doctor band is so flexible that it can be wound on and unwound about axes which extend transversely to its longitudinal direction and the doctor band is so mounted and guided at the doctor bar that it is displaceable relative thereto in the longitudinal direction, the length of the doctor band being substantially greater than the axial length of the plate cylinder. A respective winding device for winding on and unwinding the doctor band is arranged in the region of each of the axial ends of the plate cylinder. A drive means displaces the doctor band along the doctor bar during the printing operation when the doctor band is unwound from the one winding device and wound on to the other winding device.

Abstract: In a combination of a cleaning device of a cylinder of an offset sheet-fed press and a cylinder to be cleaned, the cleaning device is provided with a blade member as a cleaning cloth pressing member against the cylinder to be cleaned, the blade member having a relatively sharp edge pressing the cleaning cloth against the cylinder. The cylinder is an impression cylinder provided with sheet holding grippers projecting over the outer peripheral surface of the impression cylinder. The grippers are protected so as not to directly contact the cleaning cloth under the pressed condition by locating cam members to cover the grippers or by locating a cleaning device moving mechanism in a manner such that when the grippers approach the blade member during the rotation of the impression cylinder, the cleaning device is moved away therefrom.

Abstract: A wiping apparatus for an intaglio printing machine has a first wiping roller which is in rolling contact with a plate cylinder and which is driven in the same rotational direction as that of the plate cylinder; a second wiping roller which is in rolling contact with the first wiping roller and which is frictionally driven in the same direction as that of the first wiping roller; an ink scraper member brought into tight contact with the outer surface of the second wiping roller; an ink tray disposed under the first and second wiping rollers; and wiping paper having substantially the same width as each of the first and second wiping rollers, brought into contact therewith, and driven at a low speed in a direction opposite to that of movement of the wiping paper contacting surfaces of the first and second wiping rollers.

Abstract: An ink wiping device for an intaglio rotary printing machine comprises a tank for containing a cleaning liquid therein, an ink wiping roller rotatably supported in the tank and having a circumferential surface positioned for rolling contact with a printing plate of the intaglio rotary printing machine, the ink wiping roller having a portion immersible in the cleaning liquid, and a cleaning assembly disposed in the tank and immersible in the cleaning liquid for cleaning the circumferential surface of the ink wiping roller. The cleaning assembly includes at least one brush unit adjustably supported in the tank and having a plurality of rows of bristles having distal ends located in the vicinity of the circumferential surface of the ink wiping roller, and a cleaning sheet of synthetic fibered nonwoven cloth supported on the brush unit and interposed between the circumferential surface of the ink wiping roller and the distal ends of the bristles.

Abstract: This printing press includes improved mechanism for removing excess ink from the printing plate. The press includes a main frame which supports a plate cylinder, a pressure cylinder vertically above the plate cylinder and a scraper blade which engages one side of the plate cylinder and removes most of the excess ink therefrom. A first auxiliary carriage at said one side of the main frame supports an ink supply mechanism and receptacles for receiving surplus ink removed by the scraper blade. A second auxiliary carriage, at the opposite side of the main frame, supports two wiping webs, their supply and take-up reels, and the driving and control mechanism for the webs and their reels. The wiping webs remove any residue of excess ink on the plate. Each auxiliary carriage is lockable in an operating position abutting the main frame, and is movable to a retracted position spaced from the main frame without disturbing the setting of any adjustable element.

Abstract: Apparatus for removing buildup of high viscosity printing inks from the edge of a doctor blade in an inking fountain used in a rotary printing press is disclosed. A moving cleaning web or sheet is supported in spaced relation to the edge of the doctor blade by a conducting blade whose position is adjustable both horizontally and vertically. Buildup of high viscosity ink at the edge of the doctor blade is eliminated as the built up particles of ink are picked up and carried away by the moving cleaning web or ink wiper which may be either an endless web or a disposable roll of material.

Abstract: An improved mechanism for cleaning the driven roller in a printing press is described. In the mechanism, a wash cloth may be fed from a magazine roller over a pressure roller to a take-up roller. The pressure roller may be brought to bear against the surface of the cylinder with the wash cloth therebetween. The wash cloth is wet by spraying cleaning fluid thereon immediately prior to its encountering the pressure roller. The wet wash cloth is thus brought into contact with the surface of the cylinder which is then rotated against the cloth to cleanse the surface. After the surface is clean, dry cloth may be brought into contact with the cylinder by merely not activating the fluid spray. Means are provided for driving the pressure roller through a constant angle at each change of the cloth and, via a slip clutch, for maintaining a consistent tension on the cloth regardless of the length of cloth collected on the take-up roller.

Abstract: A device for cleaning ink from rollers of a printing apparatus. A container of ink solvent is removably mounted to the printing apparatus. A continuous web extends from the container and against the inked roller(s) of the printing apparatus. The web extends into the container and is directed downwardly by additional rollers into the ink solvent. As the printing apparatus roller is rotated, ink is transferred from the roller onto the continuous web. The web is then engaged by two wiper assemblies and a brush assembly thereby cleansing the ink from the web and allowing the ink to be transferred from the web into the ink solvent.