Abstract: A paper discharging apparatus, which is provided in a printing machine, for transferring sheets of paper having different thickness. The paper discharging apparatus has a first gripper unit fixed in a groove, which extends along the cylindrical surface of a printing cylinder, and a second gripper unit, which moves along a discharging rail. The second gripper unit has a gripper and a base to hold the sheet. The position of the base is adjusted in accordance with the thickness of the sheet. A relatively thin sheet of paper is held by the first gripper unit and a relatively thick sheet of paper is held by the second gripper unit.

Abstract: A paper discharging apparatus, which is provided in a printing machine, for transferring sheets of paper having different thickness. The paper discharging apparatus has a first gripper unit fixed in a groove, which extends along the cylindrical surface of a printing cylinder, and a second gripper unit, which moves along a discharging rail. The second gripper unit has a gripper and a base to hold the sheet. The position of the base is adjusted in accordance with the thickness of the sheet. A relatively thin sheet of paper is held by the first gripper unit and a relatively thick sheet of paper is held by the second gripper unit.

Abstract: A screen printing apparatus in which alignment marks are provided on the screen and the printing material. The marks are detected accurately and clearly by an alignment mark detector located between the printing material and the screen.

Abstract: Disclosed is a screen printing machine which has a first driving mechanism for moving a squeegee movably arranged above a screen along its surface. The printing machine has a second driving mechanism for lifting the screen from a printing material by an upward rotation of its first edge around its second edge. A controller controls the first and second driving mechanisms to operate in association with each other.

Abstract: There is disclosed a screen printing apparatus comprising a squeegee arranged above a screen in a manner opposed to the screen, the squeegee being supported such that the squeegee is movable in a vertical direction and at the same time movable in a direction of printing of a printing material, a plurality of urging devices arranged on a supporting frame supporting the squeegee in a manner suspended therefrom, for urging the squeegee toward the screen, an urging force-detecting device for detecting urging forces of the urging devices during movement of the squeegee for printing, and a first control device for controlling the urging devices based on results of detection by the urging force-detecting device to adjust urging forces applied by the urging devices to the squeegee.

Abstract: A plate loading device for a printing press is disclosed. In the printing press, a plate cylinder is rotatably supported in a housing. The device is arranged to replace a used plate wound on a peripheral surface of the cylinder with a new plate supplied through an entrance formed in the housing. The device further includes a cover for selectively closing and opening the entrance in accordance with the loading and unloading of the plate. The device also has holding members for holding the new plate at a predetermined position outside the cover when the cover is closed, and rollers for clamping, holding and guiding the new plate. The new plate is inserted through the entrance to be placed at a predetermined position on the plate cylinder so that the new plate may be wound on the plate cylinder in one direction.

Abstract: A sheet transferring apparatus transfers a sheet between a plurality of printing units. Multiple color press on a single surface of the sheet and a single color press on both surfaces of the sheet are selectively performed. A feed cylinder is rotatably provided between the adjacent units. A power source actuates the feed cylinder. A first rotating member is mechanically connected to the power source. A second rotating member is mechanically connected to the feed cylinder. The second member is arranged to be driven by said first member. A phase adjusting mechanism automatically adjusts a phase between the first and second members in accordance with the multiple color press and the single color press.

Abstract: A groove extends in the axial direction of a plate cylinder to which a printing plate is mounted. First and second plate clamps are opposite to each other in the groove to clamp the ends of the plate. The second clamp has a pair of clamping modules. The first and the second clamps are movable in the peripheral direction of the plate cylinder for opening motion. The holding portion of the clamp are moved in the radial direction of the plate cylinder for opening and closing motions. The first clamp is rotatably supported by the plate cylinder. The second clamp is shifted from a waiting position near the first clamp to a working position. A pair of the clamping modules is connected with each other via a connecting rod. The clamping modules are moved towards or away from each other to make the bottom end of the printing plate wider or narrower and remove the fanout of printing sheets.

Abstract: An ink washing device for use in a printing machine, including a spraying pipe. The pipe comprises a plurality of nozzles for spraying the washing fluid onto an ink roller. The washing fluid is supplied to the nozzle, via a washing fluid supply conduit, and compressed air is supplied to the nozzles, via an air supply conduit. The washing fluid supply conduit and the air supply passage communicate with a swirl chamber. The washing fluid and the compressed air are intermixed within the swirl chamber prior to being dispensed through the nozzles.

Abstract: A printing machine system includes a printing machine which discharges a printed material after the printing operation is completed. The printing machine system also includes a drier which dries the printed material discharged from the printing machine. A stacker is disposed intermediate the printing machine and the drier. The stacker includes a frame, and a storage for storing the printed materials discharged from the drier. A transfer apparatus is disposed in the proximity of the upper portion of the stacker, for conveying the printed materials discharged from the printing machine to the drier one by one.

Abstract: An ink washing device is disclosed, for use in a printing machine having a deposit roller with a variable luminance outer surface. The washing device includes a blade disposed adjacent to the deposit roller, for removing excess deposit of ink on the outer surface of the deposit roller, thus causing its luminance to vary. A luminance sensor detects changes in the luminance of the outer surface. The washing operation is interrupted or continued based on the detected luminance changes.