Abstract: The present invention provides a printer which can facilitate temperature control of a machine-plate cylinder section, can allow simple setup, and can facilitate maintenance of printing quality in continuous printing. In the printer, a machine plate is mounted on the outer circumference of a machine-plate cylinder section 12 fixedly provided on a machine-plate drive shaft 1. A fluid whose temperature is regulated is circulated in the machine-plate cylinder section 12.

Abstract: The present invention provides a printer-machine-plate manufacturing device which facilitates manufacture of a cylindrical printer machine plate. A machine-plate manufacturing device is adapted to manufacture a machine plate 2 which has a cylindrical machine-plate body 17 formed by superposing and joining together opposite end portions of a sheet 19 of a magnetic material, an engagement portion 21 formed on the inner side of a joint portion 20, and a forme area 18 provided on the outer circumferential surface of the machine-plate body 17. The machine-plate manufacturing device 30 includes a cylinder section 32 having an outer circumferential portion around which the sheet 19 is wound. A groove 40 into which the engagement portion 21 of the sheet 19 is removably inserted from its distal end is forted in the outer circumferential portion of the cylinder section 32.

Abstract: The present invention provides a machine-plate mounting device for a printer which can attach a cylindrical machine plate to the printer more easily and accurately. A machine-plate mounting device 3 is fixedly provided on a machine-plate drive shaft 1 of the printer for mounting a machine plate 2 having a forme area 5 provided on a portion of an outer circumferential surface of a machine plate body 4 formed from an elastic material into a cylindrical shape and an engagement portion 6 projecting radially inward from an inner circumference of the machine plate body 5 and extending in an axial direction. The machine-plate mounting device 3 includes a machine-plate cylinder section 12 fixedly provided on the machine-plate drive shaft 1 and having, on its outer circumference, a cylindrical machine-plate mounting surface 14 on which the machine plate 2 is mounted from a front-end side of the machine-plate drive shaft 1.

Abstract: The present invention provides a machine plate for a printer which can be readily and accurately attached to the printer. A machine plate 2 is characterized in that a rectangular sheet 19 of an elastic material is formed into a cylindrical shape with opposite end portions of the sheet 19 superposed on each other and joined together, thereby forming a cylindrical plate body 17; an end portion of the sheet 19 located on the inner side of a joint portion 20 is bent inward, thereby forming an engagement portion 21; and a forme area 18 is provided at a predetermined portion of the outer circumferential surface of the machine-plate body 17 excluding the joint portion 20.

Abstract: A printing machine in which automatic supply of ink from different types of ink container to the ink fountain is possible, and in which further automation of replacement procedure, simplification of replacement procedure, and reduction of time required for replacement procedure are achieved is provided. The printing machine comprises an ink fountain member 2 having fountain-forming faces forming an ink fountain 1; an ink fountain roller 3 for applying an ink to the outer peripheral surface through an ink channel between the ink fountain roller 3 and the ink fountain member 2; a plurality of rollers 4, 15 for supplying the ink applied to the outer peripheral surface of the ink fountain roller 3 to a printing portion; a plurality of ink containers 65, accommodating different types of ink, and being stored in a predetermined container storage unit 66; and an ink supply device 68 for holding the desired ink container 65 and supplying the ink therein to the ink fountain 1.

Abstract: A printing machine in which substantial automation of the replacement procedure is achieved, and thus significant simplification of replacement procedure, and reduction of time required for the procedure are achieved is provided. The printing machine comprises an ink fountain member 2, an ink fountain roller 3, a strip of sheet 39 of which middle part is placed over the ink fountain member 2, a sheet moving device 40, a pair of barrier plates 53 attracted to the ink fountain member 2 under the sheet 39 and attracted to the outer peripheral surface of the ink fountain roller 3 by a permanent magnet, a cleaning tank 56, a cleaning blade 57, a reciprocating device 58, a barrier plate replacing device 85, a plurality of ink containers 65 accommodating different types of ink and being stored in a container storage unit 66, and an ink supply device 86 for holding the desired ink container 65 and supplying the ink therein to the ink fountain 1.

Abstract: A unit of a plurality of divided vibrating rollers for detecting an abnormality in switching of the position of a vibrating roller, and preventing occurrence of an abnormality caused therefrom is provided. The unit of a plurality of divided vibrating rollers 5 includes a support member 6 fixed to a frame 7 of a printing machine; a plurality of movable members 8 of short circular cylinder shape attached to the support member 6 so as to individually reciprocate in the same direction; a vibrating roller 15 rotatably attached to the outer periphery of each movable member 8; and a change-over device 19, arranged on the support member 6, for individually switching the position of each movable member 8. A change-over detection sensor 102 for detecting the switching of the position of the movable member 6 is disposed at the portion of the support member 6 slidably contacting the movable member 8.

Abstract: A printing machine in which the automation of the replacement of the barrier plate is easily performed, and in which further automation of replacement procedure, simplification of replacement procedure, and reduction of time required for replacement procedure are achieved is provided. The printing machine comprises an ink fountain member 2, an ink fountain roller 3, a pair of barrier plates 53 attracted to the fountain-forming face 37a of the ink fountain member 2 and the outer peripheral surface of the ink fountain roller 3 by a permanent magnet, and a barrier plate replacing device 85.

Abstract: An object of the invention is to prevent ink becoming mixed with paper particles from adhering to and accumulating on edge portions of an inking roller for use in printing presses. The inking roller 5 is coated with a nonadhesive agent, which prevents ink or the like becoming mixed with paper particles from adhering, over an edge portion 5a between an outer peripheral surface of the roller and each of end faces thereof, an end portion of the outer peripheral surface continuous with the edge portion 5a and at least a portion of the end face toward the outer peripheral surface, and is thereby formed with a nonadhesive layer 27.

Abstract: An inking arrangement for printing presses which comprises a plurality of vibrating rollers switchable between two positions between a fountain roller and a distributing roller. A support member, has fitted therearound a plurality of movable members each formed with a rectangular bore having the support member inserted therethrough with a clearance provided in the bore in the forward or rearward widthwise direction of the support member. The vibrating rollers are rotatably mounted on the respective movable members. Change-over devices are provided between the support member and the movable members for moving the movable members by controlling a supply of air with switching valves.

Abstract: An inking arrangement for printing presses comprises an ink fountain member having at least one fountain-forming face for forming an ink fountain, an ink fountain roller defining an ink channel together with the fountain member and having an outer peripheral surface to be inked through the channel, a plurality of rollers for supplying the ink applied to the peripheral surface of the fountain roller to a printing portion, and a cleaning tank disposed below the fountain member. The cleaning tank is provided with a cleaning blade at least alternatively shiftable to a cleaning position in which the blade is pressed against the peripheral surface of the fountain roller, or to a stand-by position in which the blade is away from the fountain roller. The ink applied to the peripheral surface of the fountain roller through the channel is scraped off by the blade in the cleaning position and collected in the tank.

Abstract: An inking arrangement for printing presses comprises an ink fountain member having at least one fountain-forming face for forming an ink fountain, an ink fountain roller defining an ink channel together with the fountain member and having an outer peripheral surface to be inked through the channel, a plurality of rollers for supplying the ink applied to the peripheral surface of the fountain roller to a printing portion, and a cleaning tank disposed below the fountain member. The cleaning tank is provided with a cleaning blade at least alternatively shiftable to a cleaning position in which the blade is pressed against the peripheral surface of the fountain roller, or to a stand-by position in which the blade is away from the fountain roller. The ink applied to the peripheral surface of the fountain roller through the channel is scraped off by the blade in the cleaning position and collected in the tank.

Abstract: A roller comprises a straight support member, a plurality of hollow cylindrical roller members arranged axially thereof and having the support member inserted therethrough, and a position change-over device provided for each of the roller members. Each roller member is provided around the support member so as to be rotatable relative to the support member and movable relative thereto in a plane orthogonal to the axial direction, and the change-over devices are adapted to shift the roller members respectively each in the plane orthogonal to the axial direction of the roller member. A connecting member is interposed between opposed end faces of each two adjacent roller members for preventing the two adjacent roller members from moving circumferentially thereof relative to each other while permitting relative movement of the two adjacent roller members in the plane orthogonal to the axial direction.

Abstract: An apparatus for supplying ink to a printing machine comprising an ink fountain roller and an ink distributing roller supported by a frame so as to be parallel to each other, and a plurality of vibrating rollers divided axially of the rollers and disposed therebetween as arranged at a spacing axially thereof, each of the vibrating rollers being individually positionable alternatively at one of two positions between the rollers so as to be changeable in the state of contact with thereof with the ink fountain roller and the ink distributing roller. A fixed shaft fixed to the frame extends through the interiors of the plurality of tubular vibrating rollers with a predetermined clearance therebetween in the radial direction. A permanent magnet is provided at an inner peripheral portion of each vibrating roller. A magnetic device including an electromagnet is provided on an outer peripheral portion of the fixed shaft inside the vibrating roller.

Abstract: A rotary business form printing press wherein a differential gear for controlling the velocity of the roller is provided between a feed roller in a sheet feed mechanism and the drive mechanism, an adjustment device for the impression cylinder for adjusting the wheel base between an impression cylinder and a blanket cylinder is provided in the impression cylinder, motors for adjusting the positions are provided on wheels in a punching unit and in processing heads in a slitter and a vertical perforation unit, rotational angle detecting devices are provided on respective revolving shafts of a plate cylinder, wheels in the punching unit, a perforation cylinder and crank discs in a zig-zag folding unit, and differential gears for adjusting the vertical register are provided between these revolving shafts and the drive mechanism.