Abstract: A printing unit for a rotary printing press utilizes form cylinders, blanket cylinders and ink cylinders and transfer rollers. Intermediate support rings are provided on these cylinders or rollers.

Abstract: A proof press for the mounting of flexographic printing plates, comprising a printing cylinder, which is covered by a blanket for the mounting of at least one printing plate with double adhesive tape interposed, the printing cylinder being movable at right angles to its own axis in order to be placed in contact, along a generatrix, with a respective impression roller for performing proof prints, an optical system for collimating points of the impression roller with respective points of the printing plate by direct viewing, and a compression device for producing the forced adhesion of the printing plate to the double-adhesive tape and to the blanket.

Abstract: A rotary printing machine comprising two supporting shoulders, a central drum or cylinder being rotatably mounted on the supporting shoulders, at least one printing unit being arranged around the drum and comprising a printing plate cylinder and an anilox roller, which are rotatably mounted on a respective pair of supporting elements and whose rotation axis is parallel to the axis of the drum, wherein at least the central drum is actuated by a source of motion which directly engages an axial shank of the drum.

Abstract: A method and apparatus for more simply and efficiently coupling and decoupling a cylinder in a printing machine. The coupling and decoupling apparatus includes a bearing bushing (11) in a fixed bushing (28). The bearing bushing (11) carries an axial force loaded spindle (10) that is axially displaceable within the bushing (11) between a coupling position in a centering portion (9) of the cylinder and a decoupling position in which a braking system (24, 25) is engaged.

Abstract: There are disclosed; an active energy beam curing type conductive paste, containing a conductive substance, and an active energy beam polymerizable compound, wherein a cured matter, obtained when a composition of the paste excluding the conductive substance is cured with an electron beam having an acceleration voltage of 150 kV and an irradiated dose of 40 kGy, has an internal stress of 5 to 50 Mpa; a production method and a device for a conductor circuit substrate using the active energy beam curing type conductive paste; and a non-contact ID using the active energy beam curing type conductive paste and a production method for the ID.

Abstract: A printing process combining conventional and Braille printing using an offset-type printing machine. The process involves the following operations: putting on a page the text and/or images that are to be printed in a conventional manner and putting on a page the text and/or images that are to be Braille printed; printing one photolyte for every page that is to be printed in a conventional manner and one for every page that is to be Braille printed, preparing a printing plate by photolyte, the plate having a support side and a printing side containing the motif corresponding to the one on the photolyte, fixing the Braille printing plate by its support side to the counter-pressure cylinder in one of the printing stations, fixing the conventional printing plates by its support face to the plate cylinder in the other printing stations and printing the sheets to be printed that have gone one by one through the rubber cylinders and the counter-pressure cylinders.

Abstract: A crease plow folder for folding a sheet or continuous web of sheets comprises a non-twisting, holding and transporting mechanism for holding and transporting the sheet or continuous web of sheets in a non-twisting fashion during folding of the sheet. The crease plow folder first creates, at a score line in the sheet or sheets, a rolling fold by directing the sheet or sheets between a centerline-twisted bar and a pressure bar. The rolling fold is then converted into a creased fold by moving the sheet or sheets between a crease roller and an idler roller, thereby generating a change in direction that results in the crease. A controller and associated sensors are included for monitoring the progress of the sheet through the plow folder and for detecting any skewing of an entering sheet.

Abstract: A printing cylinder with a cylinder core (10), on which a carbon fiber-containing casing (20) is disposed, wherein the casing (20) is self-supporting and held at a distance from the peripheral surface (18) of the cylinder core (10) by disks (22) disposed at the two ends.

Abstract: A printing press has a support arm that can move between lower and upper positions, first and second link plates swingably supported by a main frame and the support arm, respectively. A connection pin having a protruding end portion is provided to connect the link plates. A support lever, swingably supported by the main frame, has an engagement groove which disengageably engages with the protruding end portion of the connection pin. When the support arm moves from the lower position to the upper position, the protruding end portion of the connection pin comes into contact with the edge surface of a lower portion of the support lever, and swings the support lever. When the protruding end portion of the connection pin reaches the engagement groove of the support lever, the protruding end portion engages with the engagement groove, so that the support arm is held at the upper position.

Abstract: A gear transmission for driving a printing press, with a plurality of gear pairs formed of mutually meshing gearwheels disposed operationally in a power-flow, at least one of the gear pairs being more heavily loaded than the rest thereof during operation, includes a case wherein the gearwheels forming the at least one, more heavily loaded gear pair are enclosed, the rest of the gear pairs being disposed outside the case.

Abstract: A printing press includes an L-shaped support arm swingably supported by a main frame such that a distal end thereof can move between lower and upper positions, a support frame swingably supported at the distal end of the support arm such that the other end thereof can move between upper and lower positions, swing arms swingably supported by the main frame such that the distal ends thereof can move between lower and upper positions, gas springs for applying force to the corresponding swing arms to move the distal end portions of the swing arms upward, an engagement pin attached to the support frame, and an engagement member attached to the swing arms and into which the engagement pin is inserted and has an engagement groove formed therein to open upward when the distal ends of the swing arms are situated at the upper position.

Abstract: A roller assembly positioned downstream of a printing station in a web-fed rotary printing press for pneumatically guiding a web of paper after it has been printed upon, without the risk of smearing the printings. The assembly includes a roller in the form of a hollow cylinder defining a plenum chamber therein and having formed in its surface a multiplicity of air outlet openings in communication with the plenum chamber. Air supplied under pressure to the chamber is therefore expelled from the air outlet openings in order to avoid contact with the roller the web traveling over the rollera baffle encloses at least part of the circumferential part of the roller surface for confining the air being expelled from said at least part of the other circumferential part of the roller surface and for redirecting the confined air into a pair of spaces, spaced, between the web and the roller.

Abstract: The present invention is directed to various apparatuses and methods for prevention of anilox roller scoring and compensation for anilox scoring ink marks, focusing on the anilox roller. According to some embodiments of the present invention, the uneven ink distribution pattern may be treated by an addition of an ink distribution mechanism. According to other embodiments of the present invention, image data modification methods are used for compensation for the scoring marks.

Abstract: An apparatus is provided for guiding a print carrier upon feeding the print carrier to and guiding the print carrier away from a form cylinder of a rotary printing machine. Guide elements for the print carrier are disposed axially parallel to the form cylinder. The guide elements are disposed in two groups. One group serves to pull the print carrier into the printing unit, while the other group assists in the removal of the print carrier from the printing unit of the rotary printing machine. The guide elements assisting the feeding-in and exchanging of the print carrier are protected against contact with the print carrier by throw-on elements during exchange of a print carrier. A printing unit in a rotary printing machine having the apparatus is also provided.

Abstract: A bearing assembly for rotatably supporting the cylinder on a printing press is disclosed. The printing press comprises a frame, a support shaft, a cylinder, and the bearing assembly. The support shaft includes an inner fixed end attached to the frame, a free end disposed outwardly away from the frame, and an interconnecting central portion. The bearing assembly rotatably supports the cylinder on the support shaft The bearing assembly includes an inboard bearing set secured to the support shaft adjacent the central portion, and further includes an outboard bearing set secured to the support shaft adjacent the free end. A portion of the bearing assembly is adapted to permit angular adjustment of the cylinder about an axis perpendicular to the support shaft longitudinal axis.

Abstract: A composite nip roll or nip ring that is durable and requires minimal adjustment, and which accurately provides a constant gain. In accordance with an exemplary embodiment, the nip roll or ring has a rigid shaft, a resilient polymer inner material mounted on the rigid shaft, and a metal outer covering over the resilient polymer inner material. The metal covering can be rigid or flexible. The nip roll can also include limiting rings that limit deflection of the outer covering to a maximum amount.

Abstract: A container for a printing blanket comprises a cassette of dimensions sufficient at least to contain a printing blanket in wound form. The cassette comprising a casing of generally cylindrical shape having a longitudinal opening for sheet-form egression of a printing blanket from within the cassette. In one preferred embodiment, the cassette has a pressure slide attached to or integral therewith adjacent to the longitudinal opening, for pressing a printing blanket on a press cylinder when the blanket is fed onto the cylinder. The cassette is employed in the manipulation of large adhesive-backed printing blankets for web-feed offset printing presses.

Abstract: Combined newsprint core brake system and newsprint supply reel in a continuous running roll press, for full and fractional running web supply, web tension sensor control braking coupled to core chucking spindles in the running newsprint roll core position, characterized by selectively activated Zero stroke multi caliper disc brakes carried by multi-armed spiders with core chucking spindles axially positioned and circumferentially spaced for indexing a chucking spindle axis from pre-drive to running newsprint roll core position; eliminating the prior art “transition period” replaced herein by “Constant Tension”, eliminating the prior art drag-belt deterioration of the newsprint surface texture; and with assurance of effective roll to roll splicing.

Abstract: A printing composition that is adapted for printing on computer printers and the like. The printing composition includes a backing sheet and a printing sheet. The printing sheet includes an electret which is reversibly bound to the backing sheet. In one embodiment of the invention, the printing sheet is coated with an ink absorbing coating. The electret can be constructed from materials such as polypropylene or polyethylene that have been subjected to electrostatic fields.

Abstract: A maintenance and diagnostic system for a printing machine, preferably a sheet-fed offset printing machine, includes a control system having at least one computer and is connected to signal transmitters that are sensors and/or limit switches. The main drive and other drives of the printing machine are activated via the sensors and/or limit switches. The control system is operatively connected to a control-desk computer containing data on print jobs that are carried out. The control system is arranged to provide a diagnostic and inspection system for printing machines to be used for planning necessary maintenance work in advance to the greatest possible extent such that the downtimes of the printing machine required for maintenance work are minimized. The control system includes a maintenance and inspection computer which is operatively connected to the control system and to the control-desk computer. Signals can be recorded by the control system onto the maintenance and inspection computer.

Abstract: A driving mechanism for a cylinder of a rotary printing machine utilizes a drive pinion that engages a drive gear of a cylinder which is supported in an eccentric bushing. The cylinder can be moved between print and non-print positions. The rotational axis of the drive pinion lies on a straight line defined by the axis of rotation of the cylinder and the axis of rotation of the eccentric bushing.

Abstract: In order to expose a cylinder mounted at both sides in side walls on its side opposite its drive, a structural unit can be moved away from the cylinder at a separation point thereof. The cylinder is driven and a jamming device is attached to a screwed element which screws the structural unit to the cylinder.

Abstract: An adhesive tape dispenser comprises a base, a tape roll mounting portion disposed at one end of the base, a tape cutting tool disposed at other end of the base, a printing cylinder pivoted to the base, an ink supplying device located on the base and under the printing cylinder, and a cover fastened pivotally with the base. As the adhesive tape is dispensed, the underside of the dispensed tape comes in contact with the printing cylinder. When the printing cylinder is actuated to turn by the dispensed tape, the dispensed tape is printed by the printing plate of the printing cylinder. The printing plate is continuously provided with ink by an ink cylinder of the ink supplying device.

Abstract: A rotary printing machine is disclosed which eliminates an impression roller and creates a fluid force which urges the material to be imprinted against the printing plate.

Abstract: A printing sheet that is adapted for printing in an inkjet printer or the like. The sheet has a plurality of pits in the top surface. The pits accept the ink and hold the ink in place. The bottom surface of the sheet has a permanent electrostatic charge. The sheet may be constructed by etching an electreet compatible plastic sheet and then polling the sheet. Alternatively, the sheet may be constructed by bonding a porous sheet to an electreet sheet.

Abstract: A universal cylinder mount for mounting at least one a plurality of cylinders between a headstock and a tailstock of an engraver. Each of the cylinders has a mounting aperture at each end adapted to receive a universal cylinder mount associated with each of the headstock and tailstock. The universal cylinder mount is adapted to accommodate a plurality of mounting apertures formed with different sized and having various sloped walls for facilitating alignment and frictional gripping engagement of the cylinders. The universal cylinder mount comprises at least one helically-shaped spiral or engaging edge to facilitate reducing or completely eliminating the seizing action between the cylinder aperture and the universal cylinder mount of the cylinder when the mounts are rotated in a non-engraving direction or are moved away from the mounting surfaces.

Abstract: A printing media roll mounting mechanism including a frame defining a roll compartment for accommodating a printing media roll. First and second roll holders are mounted in the compartment in axial alignment substantially perpendicular to the web path for concurrent oppositely directed linear movement. The first and second roll holders are spring urged toward one another but can be moved apart to receive different width media rolls therebetween. When the first roll holder is moved outwardly, e.g., to the right, against the spring urging, the second roll holder will also move outwardly to the left. The two roll holders are spring urged toward each other to respectively engage opposite ends of a media roll core placed therebetween.

Abstract: A rotary printing machine with an understructure that can be simply assembled from girders and then simply disassembled. The girders are connected to one another by removable attachment elements. For example, metal plates are used to connect the girders to one another. The understructure can be disassembled at one location and then reassembled at a different location.

Abstract: The apparatus is a spray shield to prevent ink and cleaning fluids from being spun off of the ends of printing cylinders. A cylindrical shield around the end of the printing cylinder is attached to a hub resting on the printing cylinder axle, and the hub and shield have sections held together by a hinge and a latch so they can be unlatched and removed for cleaning. An axial spring assembly is attached to the hub on the side opposite from the cylindrical shield so that the springs compress and friction is minimized if the hub is contacted by the printing cylinder.

Abstract: An inking and coloring device for a printer has a pair of ink supply rollers, a pair of ink transfer rollers, a printing drum, a cam arm and a drive device. Each of the ink transfer rollers are movable between a first position in which the ink transfer rollers contact a respective ink supply roller and a second position for transferring ink to the printing drum. Each of the ink transfer rollers are connected to a respective cam roller operable by the cam arm. The drive device causes the cam arm to move in a reciprocal manner, thereby causing each cam roller to move a respective ink transfer roller between its first and second positions. The arrangement is such that when one ink transfer roller is in the first position, the other is in the second position and, vice versa. The printing drum is reciprocally movable between the ink transfer rollers simultaneously with the movement of the said cam arm.

Abstract: A side wall of a printing unit of a sheet-fed rotary printing press is composed of a plurality of in-line printing units in accordance with unit construction principles. The side wall has a torsionally rigid side-wall body formed with a boxlike cross-sectional profile open on one side thereof and has a frame extending somewhat transversely to a plane wherein the side wall is disposed. The frame is formed with at least one recess through which gear wheels of a gear-wheel drive train are at least engageable or possess a kinking and back-springing course, respectively, between an upper structural region and a lower structural region of the side wall, including a removable lid ribbed on an inner side thereof and being disposed on the frame in the lower structural region wherein bearings for printing cylinders are received and at an open side of the boxlike cross-sectional profile for stiffening the frame. The frame is formed with recesses in the lower structural region thereof.

Abstract: A printing machine including multiple interactively arranged printing cylinders, at least some of which are directly-driven by induction motors. The induction motors have rotors that are connected to the cylinder mantle of the printing cylinder, and stators directly or indirectly connected to the side walls of a printing unit along substantially rigid axes, so that the respective rotors and stators associated with each printing unit are radially displaced from each other relative to the axes to define a gap between adjacent printing cylinders. The relative radial position of the printing cylinders is determined not by any mechanical mounting but, rather, by way of magnetic lateral forces of the induction motors.

Abstract: A guard provided on a printing machine, the guard safeguarding perpendicularly a printing unit/coating unit, on both sides thereof, between the side frames and covering horizontally an upper area. Parts of the guard being mounted, on both sides thereof, on swivel arms and are liftable in an opened position, with a spring element supporting this motion such that the side parts may be lifted from a closed position independently of each other, with the upper part of the guard being lifted as well.

Abstract: A positioning device for a rubber-blanket cylinder which is supported in double-excentric bearing rings allows a positional adjustment of the rubber-blanket cylinder relative to a plate cylinder and a printing substrate supported on an impression cylinder. The plate cylinder and the impression cylinder have stationary axes of rotation relative to the frame of the printing unit. A printing gap is adjusted by the positioning device to varying printing substrate thickness, and in one terminal position, the rubber-blanket cylinder is fully disengaged from the other cylinders. The rubber-blanket cylinder is shifted along a positioning path with one segment following an arc of a circle which is concentric with the plate cylinder. The parameters of the bearing and the adjusting devices are defined such that the positioning path is traversed while the respective inner and outer bearing rings rotate continuously.

Abstract: Device for wrapping a flexible print image carrier around a printing form cylinder installed in a printing press, having a rewinding mechanism including a first winding spool for unwinding a print image carrier which is windable onto an outer cylindrical surface of the printing form cylinder, and a second winding spool for winding up the print image carrier from the outer cylindrical surface of the printing form cylinder, both of the winding spools being jointly disposed in a cavity formed in the interior of the printing form cylinder, the cavity having a single opening thereto formed in the outer cylindrical surface of the printing form cylinder, the print image carrier being windable from the first winding spool through the single opening onto the outer cylindrical surface of the printing form cylinder and being windable from the outer cylindrical surface of the printing form cylinder through the single opening onto the second winding spool, includes a bearing member supporting the rewinding mechanism for t

Abstract: A device for placing a cylindrical screen provided with end rings in, and removing it from, a rotary screen printing machine comprises a screen support and lifting means connected to the screen support, for moving the screen support up and down. The screen support is designed to support the cylindrical screen while it is moving up and down. The screen support is provided with guide means, for example guide bars, along which the cylindrical screen can be moved in its lengthwise direction. With the aid of the device, cylindrical screens can be placed in, and removed from, the screen printing machine in a simple way, with the minimum chance of damage to the screens.

Abstract: Device for damping mechanical vibrations of a printing press having rotating parts includes at least one actuating member assigned to the rotating parts of the printing press for applying adjusting forces thereto, and at least one vibration pick-up operatively connected to the actuating member for controlling the actuating member so that the adjusting forces applied by the actuating member damp the mechanical vibrations; and method of damping mechanical vibrations of a printing press.

Abstract: A method and apparatus for damping bending vibration in a group of cylinders in a printing press is provided. In accordance with the method, the frequencies of the fundamental vibration modes are initially determined and then dynamic dampers are disposed so as to damp the vibrations. In accordance with the apparatus, at least one dynamic damper is disposed inside the envelope of a cylinder in the group of cylinders. It may be formed as a mass held elastically inside the envelope and having a vibration frequency that corresponds to the frequency of a fundamental vibration mode of the group of cylinders.

Abstract: A temperature control device for rotating bodies in printing mechanisms. It contains a blowing device having an internal air recirculation circuit for the recirculation of cold air which has been deflected from the rotating body which is to be cooled. A cold air generator is arranged outside the blowing device and is connected for flow to it via a cold air feed line. In this way, energy for the production of cold air is saved and the cold air feed line can have a smaller cross section since only a reduced amount of cold air need be fed.

Abstract: A printing device of the type for printing a strip-like printing article having a printing impression roller which is movable forwards while rotating in one direction and backwards while rotating in the opposite direction, along a line perpendicular to the direction of feeding a strip-like printing article is provided with a slide base which is slidable along rails which extend in a direction perpendicular to the direction of feeding of the printing article. Ink tanks and a roller train are mounted on the slide base. The roller train includes an ink fountain roller, a duct roller whose peripheral surface is in contact with the ink fountain roller, a stationary metallic roller whose peripheral surface is in contact with the duct roller, a first ink distribution roller whose peripheral surface is in contact with the metallic roller, and a second ink distribution roller whose peripheral surface is in contact with the first ink distribution roller.

Abstract: A novel apparatus and method for printing on polymer film while electrically polarizing the film or, in the case where the film has been polarized prior to printing, maintaining the film's electrostatic charge. The apparatus is incorporated into a printer and includes an ink applicator which applies the ink according to selected designs and colors and a heater for drying the ink. The improvement in the apparatus comprises a charging station which forms an electrostatic charge on the printed polymer film, immediately after the polymer film passes through the ink curing station. The method of printing on polymer film comprises applying a selected pattern of ink to the polymer film, heating the polymer film to a sufficient temperature to dry the ink of said pattern and to render the film electrically polarizable, and generating a net surface charge on the film.

Abstract: A ladder for contraction and storage on an upper working floor of a printing press having a plurality of vertically arranged working floors for access to said printing press at said working floors, such ladder having a plurality of substantially equal length sections coupled to each other at overlapping ends of said sections at side rack of said ladder for expanding and contracting such ladder, the upper end of the upper-most ladder section, when such ladder is expanded, having coupling means engageable with rails on such upper working floors for guiding such ladder, when contracted, into a horizontal position at such upper working floor for storage and for guiding such contracted ladder to a position at the end of such upper working floor for movement from a horizontal storage position to a substantially vertical expanded position for extension between such upper working floor and a working floor therebelow and means for locking such plurality of coupled sections into such contracted position for storage.

Abstract: A system and method for the printing of substrates for use in food packaging and, more particularly, a flexographic printing system and method for applying and curing radiation cured inks to a flexible, heat shrinking web employing a combination of UV radiation and EB radiation.

Abstract: Device for safeguarding a hazardous location of a printing unit in a rotary printing press, wherein the hazardous location is at a cylinder region of the printing unit containing clamping elements, cylinder bearers and pressure-adjusting rods, includes multi-partite protective coverings having an areal or sheetlike form, respective swivel shafts vertically and horizontally disposed in the printing unit and carrying the protective coverings, respectively, the respective protective coverings being swivellable about the vertical and horizontal swivel shafts between an inwardly swung or closed position protective of the hazardous location, and an outwardly swung or open position affording access to the hazardous location for performing adjustment and maintenance operations thereat, a finger guard carried by the respective protective covering swivellable about the horizontal swivel shaft, and means for remotely controlling the swivelling of at least one of the protective coverings about the respective swivel shaft

Abstract: Safety device for control or regulation systems of drive units of a printing machine having at least individual sub-aggregates thereof mechanically disconnected from one another, a plurality of motors connected via respective gear transmissions to the sub-aggregates for driving them in synchronous rotation, at least one measuring device for ensuring synchronous running of the sub-aggregates, and a device for controlling the rotary speed or the torque of the motors connected to the measuring device, further includes a clutch disposed between the gear transmissions of two of the at least individual sub-aggregates located adjacent one another, the clutch having clutch halves respectively connected to a synchronously running gearwheel of the respective gear transmissions, the clutch halves being connected to one another for transmitting torque when a preset rotational-angle difference between the clutch halves is exceeded.

Abstract: A control system (14) for a printing press (12) having a printing cylinder (36a-36d) having an outer surface, a device (90) for determining a reference printing image for the outer surface of the cylinder (36a-36d), and a device (90) for modifying the reference printing image to a subsequent printing image, and a device (90, 45, 46, 48, and 50) for forming the subsequent printing image on the outer surface of the cylinder (36a-36d).

Abstract: In cooperating cylinders, in particular cylinders of a printing mechanism which are in a drive connection via gear wheels and form a feed gap, at least one of the gear wheels is formed by a toothed rim and a wheel body which are connected with one another in a positive engagement via an overload coupling.

Abstract: A printing press comprising press units inclusive of a press unit that does not correspond to a standard floor, the press units being stacked in stages. The standard floor is provided with an operation floor that faces a press unit and with an operation floor hoist means for moving the operation floor up and down. When a press unit is situated at an intermediate stage which renders the operator difficult to work on the operation floor at the height of the standard floor, the operator go on board the operation floor, actuates the operation floor hoist means to raise the operation floor to a predetermined position or a suitable position and stops it, and then carries out the operation for the press unit of the intermediate stage maintaining stable attitude.

Abstract: Printing machine with at least one printing unit having rotating cylinders, comprising an energy converter disposed at least partially in one of the cylinders for converting at least some rotational energy of the cylinder into electrical energy and an energy storage device also disposed in the cylinder for storing the electrical energy.

Abstract: To permit easy change-over between double-prime, double-verso (2/2) printing on a substrate web (5) and double-prime, single-verso (2/1) printing, the cylinders are arranged in printing couples so that first and second blanket cylinders (1, 2) are in printing engagement with each other, with the web (5) therebetween and printing couples including blanket cylinders (3, 4) independently of the blanket cylinders (1, 2) are in engagement with each other, with the web therebetween. One (3) of the blanket cylinders of the printing couples is eccentrically shiftable from engagement with the associated blanket cylinder into engagement with another blanket cylinder (2) so that said other blanket cylinder will function as an impression cylinder for one prime image, and as a printing cylinder for the verso image, while, at the same time, another prime image is being applied thereagainst by the shifted blanket cylinder (3).