Abstract: An object of this invention is to provide a newspaper production system, having the structure of a system that is provided with a supply unit for a continuous web provided at an upstream side of a printing unit for printing on one surface and the other surface of a continuous web, and a processing unit for carrying out cutting and folding processing of a continuous web after printing at a downstream side, by making the area of an installation flat region for the printing unit for printing on one surface and the other surface of a continuous web, having an ink jet printing device group for printing one side of the continuous web and an ink jet printing device group for printing the other side of the paper sheet, small, and with which it is easy for a single person to carry out a newspaper production operation of monitoring the entire system.

Abstract: It is intended to prevent ink from leaking through the ink outlet of the ink rail while the printing press is at halt. To achieve this object, a motor control section 40 shown in FIG. 4 controls the rotation of a stepping motor 15 driving a plunger 13 and, every time the stepping motor 15 is stopped, the outer circumference 13c of the plunger 13 except a cut portion 13a blocks at least a discharge port 18, thereby enabling the pressure ink invading from an intake port 17 into the main hole 11 of a cylinder 12 to press the plunger 13 against the discharge port 18 opening into the inner circumferential face of the main hole 11.

Abstract: A chopper folder for a rotary press folds signatures which are periodically conveyed, one signature at a time, from a folding machine. The chopper folder includes a pair of folding rollers for folding a signature parallel to the conveyance direction, a prime mover, a crank arm fixed to an output shaft of the prime mover to be rotated together with the output shaft, a blade holder connected to the crank arm via a link, a chopper blade held in the blade holder and adapted to push the signature from an upper surface thereof in order to insert the signature into a space between the pair of folding rollers, and guide units for restricting motion of the blade holder such that the blade holder reciprocates only in a direction perpendicular to a conveyance plane along which the signature is conveyed.

Abstract: A sheet delivery apparatus includes a cutter cylinder, a cutter reception cylinder, and a conveyor provided downstream of the cylinders. The cutter cylinder and the cutter reception cylinder cooperatively cut a paper web so as to yield sheets of predetermined size. The sheets are delivered by the conveyor. A dampening unit is provided upstream of a region where the cutter cylinder and the cutter reception cylinder closely face each other and in the vicinity of the paper web so as to dampen the paper web such that the surface of the paper web which will face the cutter cylinder is dampened to a greater extent than is the other surface.

Abstract: In a signature-stacking apparatus, a conveyor chain holding a row of signatures travels along a conveyance path. A first signature release section and a second signature release section are provided in the conveyance path. During travel from the first signature release section to the second signature release section, the conveyor chain is twisted by 180 degrees about the direction of travel and makes a 180-degree turn about an axis parallel to a connection pin of the conveyor chain. Signatures released from the first and second signature release sections are conveyed to first and second signature delivery sections disposed on opposite sides of a stacking section by first and second conveyor mechanisms while their speed of conveyance is being adjusted. A predetermined number of signatures are delivered, while being led by their creases, into the stacking section from the first and second signature delivery sections alternately.

Abstract: A web fed printing machine includes a web path provided between two sequentially disposed printing units and a misregistration detector for detecting misregistration in superimposition printing performed by the printing units. During superimposition printing, cylinder fine-move mechanisms finely move corresponding plate cylinders based on detected misregistration in order to adjust the registration. A web path length modification mechanism is provided in the web path. A control unit is connected to the web path length modification mechanism, the misregistration detector, and a paster. When a pasting signal is generated, the plate cylinder fine-move mechanisms stop making registration adjustment. At predetermined timing, the misregistration detector detects misregistration in printing performed by the printing units. The web path length modification mechanism performs a misregistration elimination action based on detected misregistration.

Abstract: In a signature-stacking apparatus, a conveyor chain holding a row of signatures travels along a conveyance path. A first signature release section and a second signature release section are provided in the conveyance path. During travel from the first signature release section to the second signature release section, the conveyor chain is twisted by 180 degrees about the direction of travel and makes a 180-degree turn about an axis parallel to a connection pin of the conveyor chain. Signatures released from the first and second signature release sections are conveyed to first and second signature delivery sections disposed on opposite sides of a stacking section by first and second conveyor mechanisms while their speed of conveyance is being adjusted. A predetermined number of signatures are delivered, while being led by their creases, into the stacking section from the first and second signature delivery sections alternately.

Abstract: A delivery apparatus for folding machines having a folding apparatus FA and a delivery apparatus DA, comprising a delivery fly 3 for receiving signatures S1, S2 and S3 folded by the folding apparatus FA, a conveyor C for operating the delivery fly 3 at a predetermined speed ratio and receiving the signatures S1, S2 and S3 from the delivery fly 3, a gear drive 1 having a plurality of gear ratios provided between the folding apparatus FA and the delivery fly 3 for transmitting power to the delivery fly 3, and changeover means 2 capable of selectively changing over the gear ratio of the gear drive 1, so that the operating speed of the delivery fly 3 can be set to a plurality of speed steps with respect to the operating speed of the folding apparatus FA.

Abstract: A web fed printing machine includes a web path provided between two sequentially disposed printing units and a misregistration detector for detecting misregistration in superimposition printing performed by the printing units. During superimposition printing, cylinder fine-move mechanisms finely move corresponding plate cylinders based on detected misregistration in order to adjust the registration. A web path length modification mechanism is provided in the web path. A control unit is connected to the web path length modification mechanism, the misregistration detector, and a paster. When a pasting signal is generated, the plate cylinder fine-move mechanisms stop making registration adjustment. At predetermined timing, the misregistration detector detects misregistration in printing performed by the printing units. The web path length modification mechanism performs a misregistration elimination action based on detected misregistration.

Abstract: A rotary printing press includes a plurality of printing units, including at least one multiple-printing unit having a plurality of printing devices arranged vertically in layers. A plurality of first web feed units each having a web roll support device are provided for the printing units in one-to-one correspondence. At least one second web feed unit having a web roll support device is provided as a counterpart to the first web feed unit corresponding to the multiple-printing unit. The printing press includes a web roll transport apparatus, which includes a web roll transport path provided in between the first web feed units and the second web feed unit and along the row of printing units, and a web roll transport device traveling along the web roll transport path.

Abstract: A controller for controlling the running tension of paper web for rotary press includes a paper feed unit (1) and a printing unit (2) provided with a printing cylinder (21) rotating according to an operation speed command. An in-feed roller (4) is provided in a running path of paper web (W) from a paper roll (11) of the paper feed unit (1) to the printing cylinder (21). A dancer roller device (5) detects a displacement amount of a dancer roller (51) relative to a reference position of the dancer roller (51) and absorbs variations of the running tension of the paper web (W) by the displacement. A tension control processing unit (S1) performs signal generation processing to optimize the peripheral speed of the in-feed roller (4) with respect to the peripheral speed of the printing cylinder (21) based on the displacement amount of the dancer roller (51) and the operation speed command.

Abstract: A printing-cylinder bearing device for rotatably supporting a printing cylinder 12 via a frame 6 in such a manner that the printing cylinder can be moved between a printing position and a non-printing position, comprising a radial-load supporting means 3 having between the frame 6 and a shaft 2 of the printing cylinder 12 at least an eccentric part that is rotatable around the centerline of a hole 13 provided on the frame 6, a housing 5 interlocked with the eccentric part and provided in such a manner as to inhibit the axial movement of the printing cylinder 12 with respect to the frame 6, a thrust loading supporting means 4 interposed between the housing 5 and the shaft 2 of the printing cylinder 12, and an eccentric part rotating means 8 for rotating the eccentric part around the centerline of the hole 13 on the frame 6 and holding the rotated position of the eccentric part.

Abstract: A rotary printing press includes a plurality of printing units, including at lease one multiple-printing unit having a plurality of printing devices arranged vertically in layers. A plurality of first web feed units each having a web roll support device are provided for the printing units in one-to-one correspondence. At least one second web feed unit having a web roll support device is provided as a counterpart to the first web feed unit corresponding to the multiple-printing unit. The printing press includes a web roll transport apparatus, which includes a web roll transport path provided in between the first web feed units and the second web feed unit and along the row of printing units, and a web roll transport device traveling along the web roll transport path.

Abstract: A method for detecting registering errors for multi-color rotary presses in which register marks are printed on a paper web by each printing section, a light source is caused to flash based on a reference signal generated by signal output means operating in synchronism with the rotation of a predetermined plate cylinder for outputting signals, the register marks printed by all printing sections are read as two-dimensional image data via reading means operating in synchronism with the flashing of the light source, the two-dimensional image data are developed into matrix data, a first center of gravity is found as an approximate center of gravity of each register mark from the matrix data, a second center of gravity is found as a high-precision center of gravity of each register mark from the matrix data based on the first center of gravity, the second center of gravity of a predetermined register mark is used as a reference to find the relative positions of other register marks, a deviation of the resulting re

Abstract: A paper-web holding apparatus is provided in a rotary printing press having rollers which form a path for a paper web fed from a paper web feeding unit to travel along to a folding unit via a press unit and around which the paper web is wrapped. The paper-web holding apparatus includes a rotation restraint mechanism provided for at least one selected roller, and a propeller roller mechanism provided for the selected roller. The rotation restraint mechanism restrain rotation of the roller when the rotary printing press is halted, and allows rotation of the roller when the rotary printing press is operated. The propeller roller mechanism has a pressing member which is advanced toward the roller in order to apply pressing force to the roller at least when the rotary printing press is in a halt state.

Abstract: A honeycomb structure with a plurality of flexible material strips which are arranged next to one another and are connected to one another is presented. The material strips have a corrugated shape with U-shaped cross section of essentially straight, vertical partial areas (3) and curved, horizontal partial areas (2). The material strips are connected to one another at contact points (4) of the straight, vertical partial areas. In addition, a device for manufacturing a honeycomb has welding sections (6). The flexible material strips (9) are guided by the welding sections (6), where the material strips are welded to one another by means of a comb-like finger system (10). The finger system or the welding sections are laterally displaced by two sections and by a pressing operation taking place between the finger and the welding section. This presses two material strips onto a heated welding wire (7), which leads to the thermal connection of the material strips.

Abstract: An axial-position adjustment apparatus is used to adjust the axial position of an arm shaft equipped with paper roll support arms. The arm shaft is supported rotatably and axially movably on a frame in a paper web feed unit and rotated by means of a shaft-rotating apparatus located at one end portion of the arm shaft. The axial-position adjustment apparatus has a moving member including a male screw and connected to the arm shaft in such a manner as to be rotatable and axially immovable in relation to the arm shaft; a guide member having a threaded hole formed therein, the male screw of the moving member being screwed in the threaded hole, and the guide member being provided in such a manner as to be nonrotatable and axially immovable in relation to the frame; and a drive unit for rotating the moving member. The moving member and the guide member are located adjacent to the shaft-rotating apparatus. The drive unit is provided on a support member axially immovably connected to the arm shaft.

Abstract: To provide a synchronous controller of a rotary press for selecting a control subject based on print image information, wherein the rotary press of a multicolor printing unit has a printing division for printing a print image on the plate cylinder onto continuous paper passing between two blanket cylinders via the blanket cylinders and is constituted by combining at least two such printing divisions, and the controller has a print image allocation setting division for allocating print images to be printed to each printing couple, a driving unit for individually driving the printing couples, a slave control division for controlling rotation of the driving unit, and a master control division provided by connecting the slave control division and print image allocation setting division.

Abstract: A sheet delivery apparatus includes a cutter cylinder, a cutter reception cylinder, and a conveyor provided downstream of the cylinders. The cutter cylinder and the cutter reception cylinder cooperatively cut a paper web so as to yield sheets of predetermined size. The sheets are delivered by the conveyor. A dampening unit is provided upstream of a region where the cutter cylinder and the cutter reception cylinder closely face each other and in the vicinity of the paper web so as to dampen the paper web such that the surface of the paper web which will face the cutter cylinder is dampened to a greater extent than is the other surface. Grooves are formed circumferentially on the outer circumferential surface of the cutter reception cylinder.

Abstract: A pump for a printing press includes a plunger within a cylinder to be rotatable and reciprocatable and having a cutaway portion at its distal end, and a constant-speed motor for rotating and reciprocating the plunger. The plunger and the output shaft of the motor are radially offset relative to each other and inclined with respect to each other. The output shaft of the motor is coupled to the plunger via a transmission mechanism which includes an arm and a connection member. The arm is connected to, for example, the plunger, and the connection member is connected to, for example, the output shaft of the motor. The arm and the connection member are connected with each other at an eccentric position in such a manner that the arm and the connection member can displace relative to each other in the radial direction and can change the intersecting angle therebetween.