Abstract: A print head control device 4 in an ink jet printer IJP includes a print head drive board 42c3, a PCIe, and an image processing computer 42c. The print head drive board 42c3 is configured by a circuit between the PCIe and the print head drive board 42c3, the circuit having an interface function and a print head drive function integrated therein. This circuit includes an FPGA configured to perform a rearrangement processing such that assigned page data is matched to alignment of print heads 50. Further, a device driver 42c7 which is control software for the print head drive board 42c3 performs an internal transfer processing of the assigned page data to the print head drive board 42c3.

Abstract: A digital printing signature production system S comprises: a plurality of digital printing devices D1, D2, D3, and D4, each of the plurality of digital printing devices D1, D2, D3, and D4 including a paper feeding unit 1 configured to supply a continuous paper and digital printing units 3 and 4 configured to perform printing on the continuous paper supplied from the paper feeding unit 1; a continuous paper guide unit L configured to cause printing-completed continuous papers W1, W2, W3, and W4 fed from the plurality of digital printing devices D1, D2, D3, and D4 and each having different content printed thereon to be overlapped such that width direction edges of the printing-completed continuous papers W1, W2, W3, and W4 are aligned, thereby forming a single continuous paper group Wg; and a single folding unit F configured such that the single continuous paper group Wg is guided into the single folding unit F to produce a signature.

Abstract: A paper roll mounting device, configured to enable a paper roll to be supported by a paper roll supporting means provided to each arm of pairs of arms by rotary-driving a female screw member to individually move each arm in a direction parallel to a rotating shaft, is provided with: a female screw rotation amount signal output means provided to output a rotation amount signal corresponding to a rotation amount of the respective female screw member, individually on a female screw member basis, in response to rotation of the female screw member; and an arm stop position control unit configured to enable setting of a reference position for each of the arms, and, when changing a position of each of the arms in an axis direction of the rotating shaft, to enable input designation of a stop position of each of the arms, and to detect a current position of the arms with respect to the reference position by calculating a movement amount of the arms based on the rotation amount signal, and thereby move each of the arms

Abstract: Provided is a newspaper production apparatus which can make the processing mechanisms after digital printing small-scaled and which can quite easily obtain a favorably stacked state of sheets. The newspaper production apparatus includes: a paper feeding unit which feeds a continuous paper; ink jet printing units; and a folding unit which cuts and folds the continuous paper after being printed. The folding unit is configured as a rotary folding unit provided with a folding cylinder including: a retaining mechanism which retains a sheet on an outer circumferential surface of the folding cylinder; and a folding blade mechanism which projects the retained sheet radially outward. The rotary folding unit is capable of collect run by which sheets retained by the retaining mechanism are folded at each plural number of turns of the folding cylinder.

Abstract: An ink receiving device C for an ink jet printer includes: an ink receptacle which receives ink discharged from nozzles of ink jet heads; and a support member which supports the ink receptacle in a manner to enable the ink receptacle to move horizontally. The ink receptacle is enabled by the support member to move horizontally to three positions including: a standby position at which the ink receptacle does not disturb the ink jet heads from printing on a print medium; an ink receiving position which is below the ink discharging surfaces of the ink jet heads and at which the ink receptacle receives ink discharged for a purpose other than printing; and a maintenance position which is different from the ink receiving position and the standby position and at which a maintenance work of the ink receptacle is performed.

Abstract: A filling member for filling the concave portion of a blanket face which is generated along the opening portion of a groove of a blanket cylinder comprises a wedge-shaped limb portion and a head portion capable of filling the concave portion. The limb portion is inserted between the surface of the terminal and initial winding end side of the blanket which is approximately parallel with the surface in a condition in which one face of the limb portion is brought into contact with the terminal winding end side of the blanket and is pushed on both surfaces in which one face and another face forming a wedge shape for the one face oppose approximately parallel to at least a site adjacent to the head portion. The head portion can fill the concave portion when the limb portion is inserted between the initial winding end side and the terminal winding end side of the blanket.

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: It is sought to reduce the planar area on which a continuous paper web duplex inkjet printing unit is installed. To this end, a continuous paper web duplex inkjet printing unit for inkjet printing on both sides of a continuous paper web with an inkjet printing head in an inkjet printer is configured to comprise a plurality of inkjet printers 11a-11h disposed so that they lie vertically in steps and their inkjet printing heads face downwards, and a paper threading path 15 disposed below such an inkjet printer or printers in each steps for permitting the continuous paper web to be passed zigzag from an upper to a lower step successively.

Abstract: A filling member for filling the concave portion of a blanket face which is generated along the opening portion of a groove of a blanket cylinder comprises a wedge-shaped limb portion and a head portion capable of filling the concave portion. The limb portion is inserted between the surface of the terminal and initial winding end side of the blanket which is approximately parallel with the surface in a condition in which one face of the limb portion is brought into contact with the terminal winding end side of the blanket and is pushed on both surfaces in which one face and another face forming a wedge shape for the one face oppose approximately parallel to at least a site adjacent to the head portion. The head portion can fill the concave portion when the limb portion is inserted between the initial winding end side and the terminal winding end side of the blanket.

Abstract: Each of two split webs W1 and W2 (W1? and W2?) bisected at a slitter 61 from a web W (W?) is allowed to travel into a former S1, S2 after it is adjusted widthwise in position.

Abstract: A filling member for filling the concave portion of a blanket face which is generated along the opening portion of a groove of a blanket cylinder comprises a wedge-shaped limb portion and a head portion capable of filling the concave portion. The limb portion is inserted between the surface of the terminal and initial winding end side of the blanket which is approximately parallel with the surface in a condition in which one face of the limb portion is brought in contact with the terminal winding end side of the blanket and is pushed on both surfaces in which one face and another face forming a wedge shape for the one face oppose approximately parallel to at least a site adjacent to the head portion. The head portion can fill the concave portion when the limb portion is inserted between the initial winding end side and the terminal winding end side of the blanket.

Abstract: A folding apparatus of a rotary press which can select collect run or straight run comprises: a fixed pin cam 2 which performs operations of straight run and collect run; a correction pin cam 3 which stops in case of straight run, and protrudes/retracts a pin end portion with respect to an outer periphery of a folding cylinder once per two rotations of a folding cylinder 12 in case of collect run; a blade cam 4 which thrusts a blade of each blade device 16 into a jaw device 17 once per rotation of the folding cylinder in case of straight run, and thrusts the same into the jaw device 17 once per two rotations of the folding cylinder in case of collect run; switching means 62 for switching between a drive side connection and a stop side connection of the correction pin cam and the blade cam; and detecting means 61 for detecting a start-up timing of the switching means.

Abstract: An apparatus for modifying a traveling position of a paper web in a paper web processing machine is provided. The apparatus is capable of easily attaching a detection means; requiring no operation of the paper web processing machine to determine an accurately adjusted position for attachment; and extremely easily setting a desired size of a tolerable deviation range of a practical position of a side edge to an originally expected position of the side edge when the sheet travels. The apparatus includes a traveling position modification means for modifying a position of a side edge of a paper web traveling toward a processing section in a paper web processing machine; a detection means for detecting the position of the side edge of the paper web; and a control means connected to the modification means and the detection means for controlling the modification means based on a value detected at the detection means.

Abstract: The conveyor system is disclosed as appended to a web-fed printing press, for transporting the completed signatures from a delivery fan to a stacking station. Included is a first conveyor having a pair of endless chains each having a series of first grippers in transverse alignment with their counterparts on the other endless chain. Each transversely aligned pair of first grippers conjointly grips, in a loading position immediately downstream of the delivery fan, a signature at two spaced points on one edge thereof and releases the same in a transfer position intermediate the delivery and stacking station. A second conveyor has but one endless chain with a series of second grippers mounted thereto. Each second gripper grips, in the transfer position, the signature at a point on the edge thereof intermediate the two spaced points where the signature has been gripped by one pair of first grippers on the first conveyor, and releases the signature at the stacking station.

Abstract: A rotary printing press has a folding station where the printed web is perforated both transversely and longitudinally in order to expedite subsequent folding thereof into signatures. In order to incorporate a longitudinal perforator into the folding station without adding to its size, a longitudinally perforating blade similar to a circular saw is mounted to a blade carrier shaft which is rotatably supported opposite a feed roller by which the web is frictionally fed into and through the folding station. An annular, longitudinally grooved anvil is formed circumferentially on the feed roller for engaging the longitudinally perforating blade via the web being thereby perforated. The longitudinally perforating blade is movable with the blade carrier shaft into and out of perforating engagement with the anvil on the feed roller.

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: A dampening water spraying device includes: a nozzle for spraying dampening water; a nozzle holder including, an end surface connectable to the nozzle, and an outer peripheral portion provided with at least one groove; and a nozzle fixing member including, an opening portion adapted to expose at least a spout of the nozzle, and an inner peripheral portion provided with a nozzle attachment/detachment moving portion opposed to and engageable with the groove, the nozzle fixing member being adapted to be fastened to the nozzle holder while clamping the nozzle between the nozzle fixing member and the nozzle holder; wherein the nozzle fixing member includes an outer peripheral portion provided with a handhold portion for making it possible to to manually rotate the nozzle fixing member, thereby allowing to rapidly and readily conduct replacement of the nozzle.

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 synchronization control device and a synchronization control method are provided in which it includes controllers Am and As1 of a master section and a slave section for accurately synchronizing rotational frequency and rotation phases of driving electric motors Mm and Ms1. The controller As1 includes rotational frequency detectors Ss1, Fs1, a master phase counter Cm1, and a slave phase counter Cs1, and detects at all times both of a rotational frequency and a rotation phase of the electric motors Mm of the master based upon an output of the rotary encoder Pm, and further detects at all times both of a rotational frequency and a rotation phase of the electric motor Ms1 of the slave.