Abstract: To stably transport an elongated web-like print paper so as not to move in the widthwise direction of the print paper, a first sensor is disposed at a first position in a paper conveying path and a second sensor at a second position downstream of the first position with respect to the paper conveying direction. Both the first and second sensors detect a position of a side edge or the print paper. A difference between the outputs from the first and second sensors is computed while taking a travel time of the edge detected by the first sensor to reach the second sensor into account. A main controller generates a drive signal based on the difference computed and controls a mechanism for moving the print paper in the widthwise direction in accordance with the drive signal.

Abstract: Systems and related methods are provided for modulating web tension loss at the edge of spool-hosting cavities in a cylinder by displacing the feed path and/or the exit path of the web material.

Abstract: The device for the control of blowing air is connected to a compressed-air source and it includes at least one outflow orifice. The device has a valve element which is moveable into a first position in which blowing air flows from the compressed-air source at least through a first duct to the outflow orifice and which is moveable into a second position in which blowing air flows from the compressed-air source at least through a second duct to the outflow orifice. A volume flow through the second duct is greater than a volume flow through the first duct. The device is formed as a basic body which is constructed in such a way that a plurality of such basic bodies can be assembled to form a blowing-air body, such as a turner bar in a printing machine.

Abstract: A method for determining the presence of slipping of a driven nip roller relative to the web in a web printing press includes systematically changing the speed of the nip driver while monitoring the corresponding change in web tension difference across the nip. The linearity and a slope of the relationship between the tension difference and the speed of the nip driver are determined. When the tension difference is non-linear relative to the speed of the driver or the slope of the relationship is substantially less than an expected slope, then slipping is determined to be present. An operator slip indication may be provided which includes the direction of the slip, positive or negative. The operator may then take corrective action to re-establish a non-slip condition, or automatic corrective actions may ensue.

Abstract: A tension is applied to a film-like printing body to be processed in each of steps such as a printing step, a parts mounting step and the like. Further the processed film-like printing body is automatically fed out by a predetermined stroke. A supply unit (1), a printing unit (2), parts mounting units (3, 4), a heating unit (5) and a take-up unit (6) are sequentially arranged. Tension apparatuses (7, 7) which apply a tension to the film-like printing body during a process and automatically feed out the processed film-like printing body are arranged between the respective units among the supply unit (1), the printing unit (2), the parts mounting units (3, 4) and the heating unit (5).

Abstract: In order to provide a rotary printing machine for direct printing, in which the printing-assembly cylinders are guided in a stable manner by means of a cost-effective device, the forme cylinder and the impression cylinder of a printing assembly are mounted, adjustably in terms of their mutual spacing, in side walls. At least one of the two cylinders is mounted on both sides in slides movable on straight guide elements which are arranged in each case on at least one of two opposite panels of an aperture in the side walls.

Abstract: Printing apparatus comprising a printer and a laminator device, in which media printed in the printer is then fed in an integrated operation to the laminator device to be at least partly laminated, the media between the printer and the laminator device forming a loose media buffer. The apparatus further comprises syncronization means between the advance of the media in the printer and in the laminator device, said syncronization means preferably comprising counting means associated to the printer and to the laminator device, or buffer shape sensor means, or control indicia on the media.

Abstract: A web infeed device for rotary printing presses includes a pointed nose piece having concave side portions. The flexible infeed element is received in a guide, and driving elements are provided for driving the infeed element along the guide.

Abstract: The present invention relates to a device for adjusting the width of a paper web at a rotary lithographic press and the object of the present invention is to prevent ink or specks of paper from becoming attached to contact parts of a pressing member so as to contaminate the surface of the paper web, and to enable straightforward fitting and removing of a rotatable pressing member.

Abstract: In a rotary press, a first press roller adapted to retreat during printing and advance during plate changing to contact a web is provided on a travel route of the web between a printing unit and a dryer. A second press roller having the same function as the first press roller is provided on the travel route of the web between air infeed unit and the printing unit. A web presser for pinching the web is provided on the travel route of the web between the infeed unit and the second press roller. With the web being pinched by the web presser, the first press roller and the second press roller can be moved by the web in a retreating direction. After plate changing is completed, the press rollers can smoothly ascend regardless of their pressure, and can promptly and smoothly return to the state before plate changing.

Abstract: A printing press has a conveying path for a paper web formed by rollers and has at least one high performance printing unit arranged at the conveying path, a plurality of ink jets or multi-color printing units being arranged along the conveying path at intervals in a row and a paper web intermediate store is located in the conveying path preceding each of the ink jet or multi-color printing units, as viewed in the paper conveying direction.

Abstract: A signature transfer device includes a rotating arm rotating about a first axis and a first gripper rotatably mounted on the rotating arm about a second axis, the first and second axes being parallel, the first gripper having a first gripper finger and a second gripper finger. An actuator is connected to the first gripper for opening and closing the first gripper as a function of the angle of the rotating arm about the first axis, and a compression spring connects the first gripper finger and the second gripper finger, the compression spring being compressed when the first gripper and the second gripper finger are apart.

Abstract: A method and apparatus for imaging material. A section of a medium is photographed with a first camera having a first field of view. The medium is advanced along a feed direction and the section is photographed with a second camera having a second field of view. At least one of the first field of view and the second field of view is shifted from a nominal location by one or more reflective surfaces. An actual advance of the medium is compared with an intended advance of the medium and it is determined whether at least one of a media advance error and a dimensional change in the media exists in response to the comparing step.

Abstract: An imaging system includes a guide which transports a recording medium and a roller which holds the recording medium in place to pull the recording medium through an imaging plane defined by a surface of the roller. A device forms an image onto the recording medium at the imaging plane. The roller is a vacuum roller that uses a vacuum produced at the imaging plane to hold the recording medium in place during transport and imaging.

Abstract: A roll for a web printing press includes a cylindrical member configured for supporting a web, the cylindrical member being rotatable about an axis of rotation. A motor device is disposed at the axis of rotation for rotating the cylindrical member so as to advance the web over the cylindrical member during a webbing-up operation.

Abstract: A device for infeeding a material web into a rotary printing machine includes an infeed element for receiving a material web start, the infeed element being introducible onto an introduction path extending at least approximately parallel to a path of the material web in the rotary printing machine. Also included are suspension stations at which the material web is connectable to the infeed element, the suspension stations being assigned to respective components of the rotary printing machine along the path of the material web through the rotary printing machine; and a web-processing rotary printing machine having a guide path for the infeed element.

Abstract: A “spider” device (1) is disclosed for collecting and conveying signatures produced on rotary printing machines; such device (1) is movable, namely it is adapted to be moved outside the production line (5) without stopping it; for such purpose, the device is equipped with hinging means (6′, 6″) that connect it to a vertical riser (9) of the line (5) for rotating it around at least one vertical axis with respect to the ground, and it is further equipped with hooking/unhooking means (14) to the production line (5).

Abstract: A printing apparatus comprises a conveyance mechanism for conveying a web to a transfer unit, and a tension generating mechanism for applying a tension to the web fed to the conveyance mechanism, wherein the tension generating mechanism comprises a tension generating roller for changing the tension to be applied to the web in accordance with the rotational position, a tension guide that is rotated in accordance with the magnitude of tension generated by the roller, a first sensor for sensing the rotational position of the tension guide, a second sensor for sensing the rotational position of the tension generating roller, and a driver for controlling the rotation of the motor in accordance with the outputs of the first and second sensors.

Abstract: Disclosed is a paper guide device suitable for a label printer. The paper guide device comprises left and right guide members defined, on one side surfaces thereof facing each other, with guide grooves which receive and guide both widthwise edges of paper, and formed, on respective rear and front surfaces thereof, with flat geared portions; left and right gear bands formed, on respective front and rear surfaces thereof, with rack gears which are respectively meshed with the flat geared portions of the left and right guide members; a pinion gear positioned between the left and right-gear bands and meshed with the rack gears of them; and an adjustment knob slidably installed on a printer body and connected to one end of the right gear band.

Abstract: A device for detecting register marks includes at least one receiver for scanning register marks along a track disposed in a direction of movement of the register marks, and a device for positioning the receiver transversely with respect to the track, in order to determine an offset of the receiver with respect to the track, at least one positioning mark being disposed upline of the register marks in the direction of movement thereof, the positioning mark having at least one edge extending at an angle to the track, having an extent transverse to the track, which is a multiple of the extent of the register marks, and having a predetermined positional relationship to the track which is transverse to the track.

Abstract: A rotary printing machine, in particular in a reel-fed newspaper offset rotary press is provided with a device for correcting the web width. A rotatively mounted rotational body configuration is arranged in the path of the web between two print printing nips (2, 3) on one side of the web. The rotational body configuration (5; 6) has a wave-like profile that is transverse to the running direction of the web.

Abstract: A material web to be printed is drawn into a rotary printing press by securing a reinforcement element to a leading end of the material web. The reinforcement element can be enwrapped in the material web or held to the web by suitable catches. An openable and closable loop is formed in the reinforcement element and is used to connect the element to the web draw-in device of the printing press.

Abstract: The apparatus for controlling, in a power failure, a rotary press that separately drives a printing section and a folding section with independent drive sources, pulls a printing material that is being braked in a paper feeding section at least by the folding section, brings a blanket cylinder of the printing section into contact with the printing material to produce printing impressions by changing over the braking of the printing material to a braking mode with a constant braking force upon interruption of power feeding due to a main power failure, detecting a voltage drop caused by the power failure to output a power failure signal, changing over to a battery power supply, separating a blanket cylinder that is at press from the printing material, and decelerating and bringing to a halt a printing material pulling mechanism at the folding section within a predetermined time.

Abstract: Disclosed is a paper guide device suitable for a label printer. The paper guide device comprises left and right guide members defined, on one side surfaces thereof facing each other, with guide grooves which receive and guide both widthwise edges of paper, and formed, on respective rear and front surfaces thereof, with flat geared portions; left and right gear bands formed, on respective front and rear surfaces thereof, with rack gears which are respectively meshed with the flat geared portions of the left and right guide members; a pinion gear positioned between the left and right gear bands and meshed with the rack gears of them; and an adjustment knob slidably installed on a printer body and connected to one end of the right gear band.

Abstract: A printing web distortion device for imposing a measured amount of distortion into a moving web of substrate, such as paper, to compensate for lateral stretching of the substrate during a printing operation includes a post, which can be vertically adjusted, having a gas nozzle disposed at, or adjacent to, the tip of the post for generating a cushion of a gas. A support enclosure for the post has a source for pressurized gas. The post is able to slide longitudinally within the support enclosure, so that the tip of the post is either raised in an operating mode, so that the post imposes a stretch compensating distortion or, in an idle mode, the post is withdrawn from the substrate, so that no elevating force is provided on the substrate. In the operating mode, the stretch compensating distortion results from an elevating force provided by the post between the tip of the post and the moving substrate resulting from the cushion of gas, which is preferably a cushion of air.

Abstract: Determining presetting data for the cut register and/or color register (circumferential register) for printing mechanisms with no lineshaft. Using sensor, the web lengths needed for the respective print job are determined and are used to calculate presetting values for the cylinders involved in the printing.

Abstract: A device for correcting the lateral position of a printing material web (8) in a rotary press includes a correction roller (10), which is able to swivel over guide surfaces (26, 28) arranged at an angle to the web's direction of travel and roller elements (22, 24) cooperating with these, and including a web guide roller (16) arranged downstream when viewed in the web's direction of travel, over which the printing material web (8) is guided. The device (6) is characterized in that the guide surfaces (26, 28) are arranged with respect to the web's direction of travel such that the correction roller (10) moves on a substantially circular path having a radius that is large in comparison to the length of the correction roller (10) and having a center point, viewed in the web's direction of travel, which is situated in a web section (12) upstream from the correction roller (10).

Abstract: A method for controlling tension in a web of a printing press, the printing press including an infeed, printing units and a folder, the method comprising the steps of increasing an infeed tension in the web between the infeed and the printing units when the printing units change to a printing mode from a white web mode; and decreasing the infeed tension in the web when the printing units change from the printing mode to the white web mode.

Abstract: In a folder, a folding cylinder having folding components accommodated on the periphery thereof and being phase-dependently operatable, and cylinder segments for carrying the folding components, the cylinder segments being adjustable in relation to one another and being mounted coaxially in side walls, includes separate drives, respectively, for driving each of the folding components, a rotary leadthrough via which energy is supplied to the separate drives, and a speed controller for speed-dependently controlling the separate drives; a method of operating the folding cylinder; a folder including the folding cylinder; and a rotary printing machine in combination with the folder including the folding cylinder.

Abstract: A material web to be printed is drawn into a rotary printing press by securing a reinforcement element to a leading end of the material web. The reinforcement element can be enwrapped in the material web or held to the web by suitable catches. An openable and closable loop is formed in the reinforcement element and is used to connect the element to the web draw-in device of the printing press.

Abstract: A tension is applied to a film-like printing body to be processed in each of steps such as a printing step, a parts mounting step and the like. Further the processed film-like printing body is automatically fed out by a predetermined stroke. A supply unit (1), a printing unit (2), parts mounting units (3, 4), a heating unit (5) and a take-up unit (6) are sequentially arranged. Tension apparatuses (7, 7) which apply a tension to the film-like printing body during a process and automatically feed out the processed film-like printing body are arranged between the respective units among the supply unit (1), the printing unit (2), the parts mounting units (3, 4) and the heating unit (5).

Abstract: A device for guiding material webs (A through D; E through H) via an angle-bar deck (2), including a folding section that is arranged on a plurality of planes (3.1, 3.2, 3.3), from where the material webs (A through D), (E through H) enter folding apparatuses (4), (5). Accommodated on longitudinal folding devices (8), (9) are infeed elements (7), which have guide sections (13), (14) that are-able to be operated independently of one another.

Abstract: A device and a method for attaching a printing web to a webbing sail include two thin, flexible sheets to be sandwiched about the printing web. Each of the sheets is at least partly attached to a trailing edge of the webbing sail. Protrusions are disposed obliquely on the sheets for gripping the printing web. A device and a method for webbing-up a printing machine are also provided.

Abstract: A material web to be printed is drawn into a rotary printing press by securing a reinforcement element to a leading end of the material web. The reinforcement element can be enwrapped in the material web or held to the web by suitable catches. An openable and closable loop is formed in the reinforcement element and is used to connect the element to the web draw-in device of the printing press.

Abstract: The invention relates to a method for adjustment of a belt tension in a rotary press machine, whereby the belt (B) runs through at least one printing group (06, 07, 08, 09) and a change in the stretch of the belt during the production run is determined by means of a change in the difference between a first speed (u 09) and a second speed (u 11). The change in the stretch is compensated by a change n the tension of the belt before the first printing group (06).

Abstract: For the purpose of providing markings, in particular printing, on a material web (11) for producing blanks (10), the material web (11) is stopped temporarily, with the result that a printing unit (34) can provide the marking or printing. In order to ensure that the marking is positioned precisely in each case, the relative positioning between the material web (11) and printing unit (34) is controlled by a printed-mark reader (37), which is assigned to the printing unit (34). In the case of incorrect positioning, the material web (11) is moved, for correction purposes, in the conveying direction or counter to this until the correct relative positioning is achieved.

Abstract: A device for correcting the lateral position of a printing material web (8) in a rotary press includes a correction roller (10), which is able to swivel over guide surfaces (26, 28) arranged at an angle to the web's direction of travel and roller elements (22, 24) cooperating with these, and including a web guide roller (16) arranged downstream when viewed in the web's direction of travel, over which the printing material web (8) is guided. The device (6) is characterized in that the guide surfaces (26, 28) are arranged with respect to the web's direction of travel such that the correction roller (10) moves on a substantially circular path having a radius that is large in comparison to the length of the correction roller (10) and having a center point, viewed in the web's direction of travel, which is situated in a web section (12) upstream from the correction roller (10).

Abstract: Device and method for the automatic register setting of printings printed by plate cylinders in a rotary machine using inks of a plurality of colors. The printing machine particularly comprises a succession of printing units, at least one pulse generator, two pull rollers located downstream of the printing units, a combination of plate cylinders and compensating rollers to correct some register errors, scanning heads each located near and downstream to the respective printing units. Each printing unit particularly includes one of the plate cylinders as well as one of the pressing cylinders. Each pressing cylinder is controlled by a control unit.

Abstract: A device for guiding a travelling web comprises a first movable angle bar and a second movable angle bar located in respective positions in a first operative mode to guide the travelling web from an entering direction to an exiting direction and to define a first print-to-cut registration setting. In a second operative mode the exiting direction of the travelling web is changed and the print-to-cut register is maintained, whereas in a third operative mode the print-to-cut register is changed and the exiting direction is maintained.

Abstract: A device for infeeding a material web along an infeed path into a rotary printing machine includes drive stations arranged along the infeed path, and an infeed element partially enclosed by a guide formed with a lateral opening at which a material web is fastenable on an extension piece. The infeed device further includes a profiling provided on the infeed element for stiffening the infeed element in an advancement direction along the infeed path. A rotary printing press is provided with the infeed device; and a newspaper rotary printing press is similarly provided.

Abstract: A color thermal printer has a feed roller set, a thermal head, and a tension roller set that are serially arranged along a transporting path. The feed roller set and the tension roller set are rotated by respectively a stepping motor and a DC motor. The stepping motor rotates forwards. Simultaneously, the DC motor rotates the tension roller set forwards, to apply a first transporting force to the continuous recording sheet at a level higher than a predetermined transporting force of the feed roller set. Also, the stepping motor rotates backwards. Simultaneously, the DC motor rotates the tension roller set backwards, to apply a second transporting force to the continuous recording sheet at a level lower than the predetermined transporting force.

Abstract: A disklike rotary switch is installed at a junction of four web-threading guideways in a rotary printing press, for use in switching a web, being threaded through the press preparatory to printing, from one to another of the guideways. The web-threading guideways are of radial arrangement, constantly spaced 45 degrees from one another, about the axis of rotation of the switch. The switch has defined therein two orthogonally intersecting, rectilinear switching guideways, each for intercommunicating one pair of web-threading guideways opposed to each other across the switch, and two arcuate switching guideways each for intercommunicating two of the web-threading guideways that are adjacent each other circumferentially of the switch. A single fluid-actuated cylinder is used for driving the switch between two preassigned angular positions. A tandem connection of two such cylinders is used in an alternative embodiment for driving the switch between three positions.

Abstract: The device for the control of blowing air is connected to a compressed-air source and it includes at least one outflow orifice. The device has a valve element which is moveable into a first position in which blowing air flows from the compressed-air source at least through a first duct to the outflow orifice and which is moveable into a second position in which blowing air flows from the compressed-air source at least through a second duct to the outflow orifice. A volume flow through the second duct is greater than a volume flow through the first duct. The device is formed as a basic body which is constructed in such a way that a plurality of such basic bodies can be assembled to form a blowing-air body, such as a turner bar in a printing machine.

Abstract: An infeed device for drawing a material web into a web-fed rotary printing machine in an infeed direction includes an infeed channel, an infeed element guidable in the infeed channel, and an infeed triangle releasably connectable to the infeed element, the infeed triangle having fastened thereto a leading end of the material web to be drawn into the rotary printing machine, and the infeed triangle having, on a side thereof facing towards the infeed channel, a deformation extending at least approximately perpendicularly to the infeed direction.

Abstract: A flying reel changer includes first drive means for rotating the new paper reel at a minimum splice speed and second drive means for accelerating the old paper reel from either standstill or crawl speed to a speed which substantially corresponds to the minimum splice speed. The flying reel changer includes actuating means that, while the old paper reel is being accelerated from the first state, moves the dancer roll such that a substantially uniform tension is maintained in the paper web. The flying reel changer also includes joining means that joins the old paper web and the new paper web together while the old paper web and the new paper web are moving at the minimum splice speed.

Abstract: A paper roll braking device for rotary presses, in which a web is paid off from a paper roll supported between frames, caused to travel, and printed in a printing unit, comprising rotors provided on supporting members for supporting the paper roll, braking sections provided at a plurality of locations along the rotors and having friction discs that can engage with, or disengage from, the rotors at their respective locations, engage/disengage changeover sections for controlling the engage/disengage operation of the friction discs with respect to the rotors, and a tension sensing mechanism for sensing changes in the running tension of the web; a contact pressure adjusting section for adjusting the contact pressure of the friction discs to the rotors via the engage/disengage changeover section in accordance with the changes in running tension detected by the tension sensing mechanism, an outside diameter detecting section for detecting the outside diameter of the paper roll, and an operation control section for

Abstract: The invention relates to the drive of a printing machine. Cylinders and functional groups are to be driven with low technical expenditure. To this end, all form cylinders (1.1, 1.2) in a printing unit, for example, are driven respectively by separate electric motors (7) and are not in mechanical drive connection.

Abstract: A folding jaw arrangement (11) at a lateral surface (9) of a product-carrying cylinder (10) in folding apparatuses. The folding jaw arrangement (11) includes a stationary folding jaw part (13) and a movable folding jaw part (14). Formed therebetween is a gap (12) into which a folding means (5) of further cylinder (4) co-operating with the product-carrying cylinder (10) plunges during the cross-folding of products. In the process, the product to be cross-folded passes from the further cylinder (4) to the lateral surface (9) of the product-carrying cylinder (10) and is held thereon by the folding jaws (11). The movable folding jaw part (14; 29, 40) is provided with resilient regions (20, 27) via which the product is brought into and held in contact (15) with the stationary folding jaw part (13) of the folding jaw arrangement (11).

Abstract: A snake apparatus for threading a web through a printing press includes a body portion and a ridge integrally formed on a surface of the body portion. The ridge is configured to engage and guide the snake along a track through the printing press. Intermittent gaps are located in the ridge to allow the snake to flex. The snake is attached to an end of a web roll, and inserted into the track to guide the web through the press in the path desired.

Abstract: A device for guiding copies severed from a material web in a folder by a cutting-cylinder pair includes revolving transport tapes for picking up the copies after they have passed through a copy guide arranged in an outlet wedge of the cutting-cylinder pair, the copy guide extending at least partly over the width of the material web, and being formed of copy guide sections which are automatically adjustable, both with respect to the width of the copies to be guided and with respect to a passage cross section for the copies to be guided; a folder including the copy-guiding device; and a web-processing rotary printing machine including at least one folder with at least one device according to the invention.