Abstract: A blanket-mounting mechanism includes a dragging shaft, a rotating device, a correction device, and a deflection suppression device. A dragging-shaft accommodation bore extends axially through a blanket cylinder. A blanket insertion groove extends axially on the outer circumferential surface of the blanket cylinder and extends radially to the dragging-shaft accommodation bore. The dragging shaft has a blanket-end reception groove formed on the outer circumferential surface and adapted to receive one end of a blanket. The dragging shaft is inserted into the dragging-shaft accommodation bore with an appropriate gap maintained therebetween and is supported rotatably. The rotating device is disposed at the side of one end face of the blanket cylinder and is connected to the dragging shaft. The correction device is disposed at the side of the other end face of the blanket cylinder and is able to grip/release the dragging shaft so as to adjust the angular position of the dragging shaft.

Abstract: A network-type synchronous control system for rotary printing presses in which a driving means of a printing section P and the driven part thereof are combined into a block, and control is exercised so that several sets are brought into synchronous rotation by each set, the improvement comprising master control sections 1 and 2 that can independently control each of sets formed from arbitrary combinations of blocks, slave control sections 3 for controlling each block in the set upon receipt of control information from the master control sections 1 and 2, and a network line 5 connecting the master control sections 1 and 2 to each of the slave control sections 3: the master control sections 1 and 2 having a processing section, an input operation section for entering information, a master value setting section for setting a master phase and a master speed and a master network connecting section; so as to have a high degree of flexibility to ensure flexible response to the circumstances.

Abstract: A blanket-mounting mechanism includes a dragging shaft, a rotating device, a correction device, and a deflection suppression device. A dragging-shaft accommodation bore extends axially through a blanket cylinder. A blanket insertion groove extends axially on the outer circumferential surface of the blanket cylinder and extends radially to the dragging-shaft accommodation bore. The dragging shaft has a blanket-end reception groove formed on the outer circumferential surface and adapted to receive one end of a blanket. The dragging shaft is inserted into the dragging-shaft accommodation bore with an appropriate gap maintained therebetween and is supported rotatably. The rotating device is disposed at the side of one end face of the blanket cylinder and is connected to the dragging shaft. The correction device is disposed at the side of the other end face of the blanket cylinder and is able to grip/release the dragging shaft so as to adjust the angular position of the dragging shaft.

Abstract: A groove for receiving opposite end edges of an object such as a printing plate is formed in a printing cylinder in the vicinity of the outer circumferential surface thereof such that the groove extends from an axially extending anchor-shaft hole toward the outer circumferential surface of the cylinder body, thereby opening at the outer circumferential surface. One wall surface of the groove intersects, at an acute angle, with a tangent plane passing through a line of intersection between the wall surface and the outer circumferential surface of the printing cylinder, thereby forming an edge together with the outer circumferential surface of the printing cylinder. The first end edge portion of the object is bent at an acute angle, and the second end edge portion of the object is bent at an obtuse angel which is substantially the supplementary angle of the acute angle.

Abstract: A nozzle for ink-jet printing includes a manifold, a vibration element, and an orifice member. The manifold has an outside surface extending in the longitudinal direction of the manifold as well as a hollow space. The hollow space has an opening opened in the outside surface such that the opening extends along the longitudinal direction while maintaining a substantially constant width. The vibrating element is attached to at least one outside surface other than the outside surface in which the hollow space is opened. The orifice member is brought into contact and attached to the outside surface in which the hollow space is opened. The orifice member is composed of a metallic member provided in contact with the manifold, and a synthetic resin member bonded to the metallic member through use of adhesive. The metallic member has at least one through-opening at a position facing the opening of the hollow space of the manifold such that the through-opening communicates with the opening of the hollow space.

Abstract: In a pin action timing adjustment device of a folding device wherein a change-over between straight run and collect run is performed in one operation for a folding blade action and a pin action, to make it very easy to adjust a timing with which pins fall relative to the projection of folding blades, to make a mechanism very simple, to largely reduce manufacturing costs, to effectively eliminate the occurrence of faults so that maintenance is easy, and to provide an adjusting mechanism which permits ample adjustment tolerance. A control means is connected to a pin action stop cam which causes the pin action stop cam to undergo an angular displacement around its center line, and a stop means which can be connected to the pin action stop cam which has undergone an angular displacement due to the control means and stops the pin action stop cam with a phase displaced by the control means.

Abstract: An automatic paper-threading device for use in an angle bar section of a rotary press which includes a paper web supply unit, a press unit, an angle bar section, and a folding unit and which has a paper-threading path for paper web formed between the paper web supply unit and the folding unit. The angle bar section is disposed in the paper-threading path and includes a first bar and a second bar disposed in parallel and separated by an appropriate distance. The automatic paper-threading device includes a paper leader guide and a tensioner. The paper leader guide includes a drive unit for moving along the paper-threading path a paper leader affixed to a leading end portion of paper web. The tensioner is provided in the angle bar section and includes a paper guide which is disposed between the first bar and the second bar to extend the widthwise direction of the paper web.

Abstract: In a paper web feed unit of a rotary press, a paper web taken out of a paper roll is longitudinally cut into first and second cut paper webs, which are fed out toward the downstream side by a driven roller of a feed-out mechanism, and only the first cut paper web is passed through an angle bar section for transferring the traveling path of the first cut paper web.

Abstract: A turning bar apparatus includes a stationary turning bar assuming the form of a hollow cylinder and adapted to change the running direction of a web looped therearound and a compressed-air supply unit for supplying compressed air into the hollow interior of the turning bar. A plurality of air outlet openings are formed through the wall of the turning bar and are arranged in rows and along the longitudinal direction of the turning bar. At least a single row of air outlet openings is arranged in an upstream portion of a web-looping region extending between an upstream end of the web-looping region and a circumferential center of the web-looping region. At least a single row of air outlet openings is arranged in a downstream portion of the web-looping region extending between the circumferential center of the web-looping region and a downstream end of the web-looping region.

Abstract: An automatic deceleration and stoppage controller for a rotary press includes an input unit, a detection unit, a copy-number management unit, a printing-speed detection unit, and a processing unit. The input unit inputs a scheduled copy number indicating the number of signatures to be printed by and discharged from the rotary press. The detection unit detects the signatures discharged from the rotary press and outputs detection signals corresponding to the signatures. The copy-number management stores the scheduled copy number, subtracts from the scheduled copy number the total number of the detection signals successively output from the detection unit to thereby calculate a remaining copy number, and outputs a remaining-copy-number signal representing the remaining copy number. The printing-speed detection unit detects the operation speed of the rotary press and outputs an operation-speed signal representing the operation speed during printing.

Abstract: A printing-plate mounting-position instruction system instructs a worker where to mount a plurality of printing plates in a rotary printing press. The system includes a controller, a reader, a judging device, and a display device. The controller creates assignment information for assigning printing plates to mounting positions on each of plate cylinders used in each of printing units on the basis of production instruction information. The reader reads a mark on a printing plate for printing-surface information. The judging device is connected to the controller and the reader and collates the assignment information received from the controller and the printing-surface information received from the reader, thereby judging the location where the printing plate is to be mounted. The display device displays the result of the judgment.

Abstract: A signature-delivery-pitch regulating apparatus includes a grip mechanism adapted to grip a signature received in a rotating delivery fan, push the signature out of the delivery fan, and then release the signature on the transport conveyer operating at a speed slower than the moving speed of the grip mechanism. The grip mechanism includes at least one endless chain in meshing engagement with at least a first sprocket and a second sprocket. The first sprocket rotates at a position within a rotation locus of bottoms of signature receiving spaces of the delivery fan and in the vicinity of a region where the delivery fan comes close to the transport conveyer. The second sprocket has an outer circumference located outside the rotation region of the delivery fan. The endless chain can travel along the transport direction of the transport conveyer from a position inside the rotation region of the delivery fan to a position outside the rotation region of the delivery fan.

Abstract: A cylinder throwing-off/throwing-on controller for a multicolor lithographic rotary press in which paper splicing is performed.

Abstract: A printing unit drive apparatus for a rotary press which includes a single or plural printing units and a single or plural folding units. The drive apparatus includes a motor capable of driving a driven portion of each unit, a connection mechanism for drivingly connecting the motor with the driven portion, and a brake mechanism and a reduction gear mechanism disposed in the connection mechanism. All or some of the motors are selectively combined and operated in a synchronized manner. When supply of electricity to the motors is stopped, the motors stop simultaneously without continuing their independent inertial rotation.

Abstract: An automatic paper-web splicing system rotates a new paper roll being spliced, causes the peripheral speed thereof to agree with the traveling speed of a traveling web, and splices the start end of the new paper roll to the traveling web. The automatic paper-web splicing system directly detects via a detection mark provided on the outer peripheral surface of a new paper roll being spliced to a traveling web that the outer peripheral surface of the new paper roll is moved by a predetermined length by the rotation of the new paper roll, causes the time required for the new paper roll to move to agree with the time required for the traveling web to travel over the predetermined length, thereby causing the peripheral speed of the new paper roll to agree with the traveling speed of the traveling web, and carries out automatic splicing in this state.

Abstract: A rotary press has a paper web supply apparatus, a printing apparatus, and a post-printing processing apparatus. The rotary press further includes at least one heating roller provided in a path along which a paper web carrying printed images runs from the printing apparatus to the post-printing processing apparatus, as well as at least one cooling roller provided downstream from the heating roller. The heating roller and the cooling roller are disposed such that the running paper web contacts each of the rollers over at least one-fourth of the circumference thereof. The heating roller is rotated at a circumferential speed different from a running speed of the paper web. The heating roller is a cylindrical body equipped with a built-in coil to which alternating current is supplied. The heating roller has cavities which are formed in a mutually communicating manner in the wall thereof and are filled with a thermal medium, and the outer surface of the heating roller is roughened.

Abstract: A device for adjusting an ink supply gap is employed in an ink fountain apparatus in which the bottom portion of the ink fountain apparatus forms a space for storing ink in cooperation with a peripheral surface of an ink fountain roller while a forward edge of the bottom portion faces the peripheral surface of the ink fountain roller in order to form a gap serving as an ink supply port. The device for adjusting an ink supply gap includes a plurality of blade segments and a plurality of ultrasonic linear motors corresponding to the blade segments. The blade segments are disposed on a base in a row extending in the axial direction of the ink fountain roller and are adapted to individually advance toward or retract from the ink fountain roller so as to adjust the opening of the ink supply port. The ultrasonic linear motors are adapted to individually advance or retract the corresponding blade segments.

Abstract: A paper guide unit is disposed in a signature delivery section of a rotary press in which signatures are inserted between vanes of a delivery fan and dropped onto a conveyor located under the delivery fan through rotation of the delivery fan. A guide member located in the vicinity of a rotation area of the delivery fan has a signature guide surface which comes into contact the signatures inserted between vanes of the delivery fan in order to guide them toward the conveyor. A movable unit is provided to support the guide member. The movable unit is reciprocatively movable in a substantially horizontal direction to move the guide member toward or away from the delivery fan. An adjusting unit is linked to the movable unit for moving the guide member toward or away from the delivery fan via the movable unit to thereby adjust the gap between the guide member and the delivery fan.

Abstract: A doctor blade apparatus is attached to a doctor whose doctor blade is pressed against a metering roller provided in an inking train of a printing apparatus and scrapes off an excess portion of ink transferred onto the circumferential surface of the metering roller. The doctor blade apparatus comprises a blade holder attached to a base which moves toward and away from the metering roller, a doctor blade held by the blade holder and extending along substantially the entire axial length of the metering roller, and an elasticity-modifying member which abuts, along the longitudinal direction of the doctor blade, a deflection-side surface of the doctor blade whose edge is pressed against the circumferential surface of the metering roller and deflects accordingly. The elasticity-modifying member is movable toward and away from the edge of the doctor blade. A reciprocal movement mechanism reciprocally moves the elasticity-modifying member toward and away from the edge of the doctor blade.

Abstract: There is disclosed a simple and compact additional printing apparatus for a rotary press and a printing unit. The additional printing apparatus includes an ink jet printing device comprising an ink jetting nozzle section and unnecessary ink droplet deflection unit. The ink jetting nozzle section includes a plurality of orifices arranged in a row and ink droplet formation unit. The unnecessary ink droplet deflection unit corresponds to each of the orifices. The ink jet printing device is disposed at a predetermined position in proximity to a paper web pass at which position an additional image can be printed on paper web in alignment with an image printed by the printing cylinder.