Abstract: A method for controlling register settings of a printing press, includes rotating imaging cylinders of a first print unit and a second print unit, located downstream of the first print unit in a movement direction of a print medium, at a rotational speed to print an image on the print medium. The method includes of changing a length of the print image to a pre-determined length. The method further includes changing a register setting of the imaging cylinder of the second print unit based on the predetermined change in length of the print image to avoid misalignment of the print image printed by the first and the second print units on the print medium. Changing the register setting is dependent on a length of a section of the print medium between the first and the second print units. A device for controlling register settings of a printing press is also disclosed.

Abstract: A method for controlling register settings of a printing press, includes rotating imaging cylinders of a first print unit and a second print unit, located downstream of the first print unit in a movement direction of a print medium, at a rotational speed to print an image on the print medium. The method includes of changing a length of the print image to a pre-determined length. The method further includes changing a register setting of the imaging cylinder of the second print unit based on the predetermined change in length of the print image to avoid misalignment of the print image printed by the first and the second print units on the print medium. Changing the register setting is dependent on a length of a section of the print medium between the first and the second print units. A device for controlling register settings of a printing press is also disclosed.

Abstract: A web printing press is provided printing a web having a first side and a second side including a first plate cylinder having a first diameter for printing a first image on the first side of the web and a second plate cylinder having a second diameter different from the first diameter for printing a second image on the second side of the web. A method of printing a web is also provided.

Abstract: A web-fed rotary printing unit having a plurality of printing mechanisms is provided. Each printing mechanism includes a form cylinder (1, 5, 16-18, 27-30), a transfer cylinder (2, 6, 3, 7, 12-15, 22-25) and an impression cylinder (3, 7, 11, 26). The component costs associated with the drive motors can be reduced by providing a drive motor (4, 8, 9, 21, 41, 42, 55) that has a drive connection to the other cylinders via the impression cylinder.

Abstract: A web-fed rotary printing press, which is used for printing a web has at least four printing points or locations that are allocated to the web in an imprinting mode of the press. At least one of each two printing points or locations can be alternatively engaged with the web. These two printing points apply the same ink to the same side of the web. These two printing points or locations are situated in two different printing units. In each of the operating modes of the press, at least one of the printing points or locations in each of the units is in a print-on position.

Abstract: Printing device for printing machines of various kind, which is made in such a way that to permit to print paper pages and sheets of any size, with a number of copies larger than those attainable with the current printing machines and with high printing accuracies. Printing device comprising a plurality of cylinders having at least a double height, including cauotchouc-covered printing cylinders (10, 11), which are magnetically attracted with each other during the printing process, thereby preventing any undesired mechanical vibration of the same cylinders, which could be prejudicial for the printing quality, and cylinder-plates (16, 17) which are attracted by the opposite printing cylinders during the printing process, and which are covered with a number of printing plates identical to the number of copies of paper pages and sheets to be printed. The invention also discloses other particular component parts of this printing device.

Abstract: A device for changing an operating state of a gripper-control device in a sheet-reversing device of a sheet-processing machine including a cylinder having an actuating shaft accommodated therein, includes an activating element cooperatively engaging with the actuating shaft for changing the operating state of the gripper control device. An actuating element is coupled mechanically with the actuating shaft. An adjusting element is movable relative to the cylinder. The adjusting element is disposed externally to the cylinder and cooperatively engages with the actuating element for moving the actuating element at least approximately synchronously with the cylinder during operation of the sheet-processing machine while the actuating shaft remains in a prescribed position with respect to the cylinder. The actuating element is changeable in position relative to the cylinder by the adjusting element, whenever the operating state is changed.

Abstract: The invention relates to a printing unit, comprising at least two pairs of two cylinders each, namely a transfer cylinder and an associated forming cylinder, whereby the transfer and forming cylinders are each embodied with a width sufficient for printing six newspaper pages, arranged axially next to each other and the transfer cylinder co-operates with a printing cylinder embodied as a satellite cylinder to form a printing head in a print-in-place arrangement.

Abstract: A satellite printing machine for printing sheets includes a single central common counter-pressure cylinder and at least four satellite printing groups arranged in a peripherally distributed manner about the counter-pressure cylinder in a rotational direction thereof from a feed cylinder to an output cylinder. The counter-pressure cylinder is provided in the form of a rubber blanket cylinder. At least one additional satellite printing group cooperates with the counter-pressure cylinder for at least single-color back side printing, and is disposed in the rotational direction of the counter-pressure cylinder before the feed system and after the output cylinder.

Abstract: A printer, that includes multiple printing groups, is mounted in the frame of an offset printing machine. Each printing group includes at least one printing cylinder, at least one transfer cylinder and at least one inking system. Two of these printing groups are arranged opposite to each other. At least one counter-pressure cylinder is arranged between these opposite printing groups. The frame has at least three separable frame modules. At least one printing group is located in a left module. At least one printing group is located in a right module. At least one counter-pressure cylinder is located in a module frame module situated between the left and right frame modules.

Abstract: The present invention provides a cylindrical printing blanket comprising a seamless sleeve and a sheet-like blanket having a fabric layer, a compressive layer and a surface printing layer, said sheet-like blanket being bonded onto the outer surface of said seamless sleeve. The blanket is made by cutting a long sheet-like blanket that has the fabric layer, the compressive layer and the surface printing layer and is bonded to the outer surface of the seamless sleeve, thus the operation can be done with good workability.

Abstract: A printing machine includes two printing units, each comprising a web feed section, a web printing section connected to the web feed section and a web treating section connected to the web printing section, in which a single-side surface of a continuous web is printed at each of the web printing sections. The printing machine also includes a turn/transfer section at which two the printing units are operatively connected and the continuous web printed by one of the two web printing sections is transferred to the other one thereof through turning and transferring treatment of the continuous web. The printing machine is capable of carrying out double-side printing and single side printing and improving printing efficiency with a relatively small location space or site.

Abstract: The web-fed rotary offset printing machine utilizes a blanket belt onto which two or more colors are offset and which prints the two or more colors at once onto a material web. The blanket belt travels about guide rollers which have a lesser mass and/or a lesser diameter than the form cylinders which offset the colors onto the blanket belt. If several impression nips—blanket to web nips—are formed along the travel path of the material web, they are located so close to one another that fan out register errors cannot occur.

Abstract: In a print position setting method, a sequence of the following operations of printing a toner mark 4 by the obverse side printer, of detecting the toner mark 4 by a mark sensor 9, and feeding a printing sheet a distance ranging from a toner mark detecting position 12 to a page leading edge position 6 when the printing operation starts, is automated.

Abstract: A multi-color, web-fed rotary printing press provides a shortened construction. A web passes vertically downwardly through a plurality of bridge printing units which are arranged one above the other. A lowermost one of these bridge printing units has a transfer cylinder that changes the path of web travel from a generally vertical direction to a generally horizontal direction in route to a downstream located device, such as a drying device.

Abstract: An apparatus for processing a web of material by applying a liquid material to the web, heating the web, cooling the web and moistening the web is provided with an applicator that applies the liquid material to the web, a drying apparatus that heats the web to an initial temperature of greater than about 250° F. and causes the web to have a moisture content of no greater than about 1.5%, a first cooling apparatus that causes the initial temperature of the web to be reduced to a second temperature no greater than about 210° F. and no less than about 100° F., a moistening apparatus that causes the moisture content of the web to be increased to at least about 2.5%, and a second cooling apparatus that causes the web to be cooled to a temperature not greater than about 100° F.

Abstract: A first printing unit of an offset printing press has five cylinders, which include two forme cylinders, two transfer cylinders and a counter-pressure cylinder. These five cylinders are arranged in a manner forming a shape of a “W”.

Abstract: A rotary printing machine has blanket cylinders and plate cylinders, which are integrated in pairs into cylinder groups by a mechanical coupling for their joint drive. Such a cylinder group is driven by a separate drive motor.

Abstract: A printing press includes a pair of in-line central impression cylinders which rotate about parallel axes. A web which is printed on the central impression cylinders is advanced from one of the cylinders to the other along a path which is perpendicular to the axes. The web is advanced from an unwind to the first central impression cylinder along a path which is parallel to the axes, and the web is advanced from the second central impression cylinder to a rewind along a path which is parallel to the axis. The web path between the central impression cylinders is relatively short, and the printed side of the web does not contact any rolls except possibly a laydown roll before the second impression cylinder. The central impression cylinders and the plate rolls are driven by different servo motors, and a controller controls the servo motors for adjusting the repeat of the printed images.

Abstract: In a rotary rotogravure printing press for accomplishing the multicolor printing of first and second sides of a material to be printed, first side printing units and second side printing units are arranged in an alternating form. Dryers are located between the alternating first and second material side printing units, which may be configured as tower printing units.

Abstract: A multi-color single blanket printing press for printing single or dual webs includes a pair of blanket cylinders that are movable between a contacting position and a remote position. A plurality of plate cylinders associated with each blanket cylinder apply a multi-color image to each blanket cylinder. When the blanket cylinders are in the contacting position, a web passing through the nip will receive multi-color image on both sides. When the blanket cylinders are in the remote position, a pair of webs may be passed between secondary nips formed by the blanket cylinders and a pair of secondary impression cylinders. Each of the webs may therefore receive a multi-color image on one side.

Abstract: The present invention relates to a printing unit for blanket-to-blanket printing. The printing unit includes two printing couples positioned one on top of the other. Each printing couple includes a form cylinder and a transfer cylinder. The transfer cylinders each carry a gap-free blanket. A horizontal web passes between the transfer cylinders of the two printing couples. In order to achieve good print quality with an advantageous web path, a plane connecting the centers of the transfer cylinders is inclined from a plane extending perpendicular to the web and passing through the center of one of the transfer cylinders by an angle (.alpha.) in the range from 0.degree. to 10.degree. and optimally by an angle of 5.degree..

Abstract: A color printing apparatus printing for both sides of printing paper comprises a plurality of printing sections which are arranged at a regular interval in a piled configuration. Each one of the printing section includes a pair of blanket cylinders facing each other which can be moved between their contacting positions and their isolating positions. Every blanket cylinder is connected to a plate cylinder which is connected to an inking unit, or an inking unit and a dampening unit. Each of the plate cylinders is further provided with a fine adjusting means for shifting the plate cylinder along its axis with respect to the blanket cylinder. The shifting operation of the fine adjusting means can easily minimize the printing shears caused by moisture without stopping the printing apparatus.

Abstract: This invention relates to a printing press including an impression cylinder and a plurality of printing units which include drive gears and plate cylinders which are movable into and out of engagement with the impression cylinder. The press also includes a driven central gear which is coaxial to the impression cylinder and in mesh with all plate cylinder drive gears. The plate cylinders are permitted to have a plate length which is not exactly equal to an integral multiple of the tooth pitch of the plate cylinder gears so that the peripheral length of the plate cylinder is not an integral multiple of the tooth pitch of the central gear. The central gear is operatively connected by a gear train to drive a gear that is secured to the stub shaft of the impression cylinder. The gear train includes a differential gear train which has an input member that is adapted to be driven by an infinitely controllable transmission or by a stepping motor or the like.

Abstract: A color printing apparatus printing for both sides of a web of printing paper comprises a plurality of printing sections which are arranged at a regular interval in a piled configuration. Each one of the printing section includes a pair of blanket cylinders facing each other which can be moved between their contacting positions and their isolating position. Every blanket cylinder is connected to a plate cylinder which is connected to an inking unit, or an inking unit and a dampening unit. Each of the plate cylinders is further provided with a fine adjusting means for shifting the plate cylinder along its axis with respect to the blanket cylinder. The shifting operation of the fine adjusting means can easily minimize the printing shears caused by moisture without stopping the printing apparatus.

Abstract: The web-fed printing machine preferably intended for the printing of banknotes has two closely adjacent impression cylinders (2, 3), each of which interacts with several blanket cylinders (4, 6). Each blanket cylinder (4, 6) is inked by a plate cylinder (5, 7) which receives its ink from its own inking unit (9, 9'; 11, 11'). The paper web (P) runs between the respective impression cylinder (2, 3) and blanket cylinders (4, 6), partially looping first round one impression cylinder (2) and then in the opposite direction round the other impression cylinder (3), so that the two sides of the paper are successively printed directly with the individual colors. All the blanket and plate cylinders interacting with an impression cylinder (2, 3) are arranged on a respective common exchangeable machine stand (15, 16).

Abstract: The printing machine is composed of two essentially identically constructed halves which each have an impression cylinder (4, 14), an image transfer cylinder (6, 16) resting against this, a blanket cylinder (7, 17) and a collect-printing plate cylinder (5, 15). In the offset-printing position, the blanket cylinder (7, 17) rests against the impression cylinder (4, 14) and is inked by offset plate cylinders, while the collect-printing plate cylinder (5, 15) is inoperative. In the collect-printing position, the blanket cylinder (7, 17) is moved away from the impression cylinder (4, 14), is inked by color selector cylinders (8, 18) and itself inks the collect-printing plate cylinder (5, 15) which rests against the image transfer cylinder (6, 16). Moreover, in both printing positions, the image transfer cylinder (6, 16) is inked by the plate cylinder (10, 20) of an additional single-color printing unit.

Abstract: The printing machine has two interacting blanket cylinders (4, 14), between which the paper to be printed runs through, thereby being printed on both sides, two plate cylinders (5, 15), each of which carries a collect-printing plate and is in contact with one of the blanket cylinders, and two color-collecting cylinders (6, 16) which are arranged at a distance from one another and each of which is in contact with a plate cylinder (5, 15) and with several color selector cylinders (8, 18), each inked by an inking unit (9, 19). Moreover, the two blanket cylinders (4, 14) are each in contact with the plate cylinder (10, 20) of an additional printing unit which is a wet offset-printing unit working with a dampened intaglio printing plate.

Abstract: The printing machine has two multi-color printing units (I, II) of essentially identical construction, each composed of a first blanket cylinder (4, 14), of a second blanket cylinder (7, 17), of a plate cylinder (5, 15) and of an image transfer cylinder (6, 16). In the offset-printing position, the second blanket cylinder (7, 17) inked by offset plate cylinders (8) rests against the first blanket cylinder (4, 14), while in the collect-printing position it is moved away from this and inked by color selector cylinders. In the collect-printing position, the plate cylinder (5, 15) carries a collect-printing plate, of which the image inked by the first cylinder (7, 17) is transferred to the first blanket cylinder (4, 14) via the image transfer cylinder (6, 16). In the offset-printing position, the plate cylinder is inoperative.

Abstract: A printing machine comprising an indirect printing device, a drying device, a sheet transfer and turning device actuated according to requirements, and an intaglio printing machine. It permits printing in a single pass through the device a simultaneous recto-verso printing, namely on one side according to the color collecting printing method, an image with juxtaposed colors, and on the other side according to the offset printing method an image with superposed colors and designs, notably for creating safety background on bank notes, and after drying and, if necessary, turning the sheets, an image printed by intaglio printing on one of the sides, notably for creating a main design on the bank note. The multicolor printing on the side receiving the image with juxtaposed colors may be completed in the device by a monochrome wet offset printing. Moreover, a register control device is incorporated between the sheet transfer and turning device and the intaglio printing machine.

Abstract: A method and apparatus for conversion of a web fed letterpress unit (10) into a web fed offset printing press unit (42) having a main frame (12) an auxiliary frame (44) inside the main frame for receiving cylinders, a pair of offset plate cylinders (46 and 46a) for mounting printing plates thereon, an inking arrangement (16, 18 and 20) for applying films of ink to the plates, and a pair of blanket cylinders (48 and 48a) in close proximity of a position for respective rolling contact with the plates on the plate cylinder and the other blanket cylinder. An offset press gear train (114) is installed outside the frames if the shafts for the cylinders can be extended through the bores (56, 56a, 58, 58a, 76 and 112) in the main frame left from the removed letterpress unit cylinders. Otherwise the gear train (54) is placed inside the main frame. Pilots (60, 60a, 62 and 62a) for insertion into bores in the main frame guide the installation of the auxiliary frame.

Abstract: According to the machine and method, one of the paper sides is printed with a collect print image with juxtaposed colors by means of a typographic plate cylinder inked by a collecting cylinder inked in turn by selective color inking cylinders of which the number corresponds to the number of colors, and on the other side an image with superposed colors and designs by means of offset plate cylinders contacting an offset blanket cylinder and of which the number corresponds to the number of colors and designs of the image. For this purpose the machine comprises another blanket cylinder contacting the typographic plate cylinder and pressed against the offset blanket cylinder, the paper passes between this cylinder and the other blanket cylinder. The multicolor collect print side may be completed by at least one monochrome wet offset print. In additional embodiments, the geometrical arrangement of the blanket cylinders is changed to enable additional printing units to contact the other blanket cylinder.

Abstract: The printing machine has two interacting blanket cylinders (1,2) which are each inked by several offset plate cylinders (5,12) and between which the paper (P) to be printed on both sides runs through. One of the blanket cylinders (2) is also in contact with a plate cylinder (8) carrying a collect printing plate which is inked in a multicolor manner by a further blanket cylinder (9). This blanket cylinder (9) receives the inks from several appropriately inked selective color inking cylinders (10). Also arranged between the two blanket cylinders (2,9), which are in contact with the plate cylinder (8) carrying the collect printing plate, is an adjustable and convertible plate cylinder (16) which, in a first working position, carries an offset plate and rests against the blanket cylinder (2) inked by the offset plate cylinders (12), whilst in a second working position it carries a selective color inking plate and rests against the blanket cylinder (9) inked by the selective color inking cylinders (10).

Abstract: The machine can print on both sides of the paper either an image with juxtaposed color by means of a typographic plate inked respectively by a collecting cylinder inked in turn by selective color inking cylinders of which the number corresponds to the number of colors, or an image with superposed colors and designs by means of the plate cylinders substituted for the selective color inking cylinders and provided with printing plates inking a corresponding offset cylinder and of which the number corresponds to the number of colors and designs, or an image of each above-mentioned type.

Abstract: The machine can print on both sides of the paper either an image with juxtaposed colors by means of a typographic plate inked respectively by an ink collecting cylinder inked in turn by selective color inking cylinders of which the number corresponds to the number of colors, or an image with superposed colors and designs by means of plate cylinders substituted for the selective color inking cylinders and provided with printing plates inking a respective offset cylinder and of which the number corresponds to the number of colors and designs, or an image of each type aforesaid. For this purpose the machine comprises two blanket cylinders operating either as collecting cylinders spaced from each other, each in contact with a cylinder carrying said typographic plate of which the image is transferred via another blanket cylinder to the paper surface, or as offset cylinders pressed against, and printing, the paper, or one as a collecting cylinder and the other as an offset cylinder, both separated.

Abstract: A method and apparatus for conversion of a web fed letterpress unit (10) into a web fed offset printing press unit (42) having a main frame (12) an internal support such as an internal auxiliary frame (44) inside the main frame for receiving cylinders, a pair of offset plate cylinders (46 and 46a) for mounting printing plates thereon, an inking arrangement (16, 18 and 20) for applying films of ink to the plates, and a pair of blanket cylinders (48 and 48a) in close proximity to a position for respective rolling contact with the plates on the plate cylinder and the other blanket cylinder. An offset press gear train (54) is installed outside the frames with the shafts for the cylinders extended through bores (60b, 61b, 62b and 112) provided in the main frame. The offset unit also includes external support such as external auxiliary frame (45) affixed to the outside of the main frame between the main frame and the gear train.

Abstract: The machine comprises an indirect printing device, a drying device, a sheet transfer and turning device actuated according to requirements, and an intaglio printing machine. It permits of printing--in a single pass--through device a simultaneous recto-verso printing, namely on one side according to the color collecting printing method, an image with juxtaposed colors, and on the other side according to the offset printing method an image with superposed colors and designs, notably for creating safety background on bank notes, and after drying and, if necessary, turning the sheets, an image printed by intaglio printing on one of the sides, notably for creating a main design on the bank note. The multicolor printing on the side receiving the image with juxtaposed colors may be completed in device by a monochrome wet offset printing. Moreover, a register control device may be incorporated between the sheet transfer and turning device and the intaglio printing machine.

Abstract: The machine can print on one of the paper sides an image with juxtaposed colors by means of a typographic plate cylinder inked by a collecting cylinder inked in turn by selective color inking cylinders of which the number corresponds to the number of colors, and on the other side an image with superposed colors and designs by means of offset plate cylinders contacting an offset blanket cylinder and of which the number corresponds to the number of colors and designs of this image. For this purpose the machine comprises another blanket cylinder contacting the typographic plate cylinder and pressed against the offset blanket cylinder, the paper passes between this cylinder and the other blanket cylinder. The multicolor printing on the side receiving the image with juxtaposed colors may be completed by a monochrome wet offset print.

Abstract: A reversible color deck apparatus for rotary printing presses for permitting a printer to selectively print a plurality of colors on one side or the other of a paper web. The apparatus includes a plurality of image delivery rolls or cylinders disposed in spaced relation. A pair of blanket rolls or cylinders are disposed within the space separating the image delivery rolls and are supported at their ends by eccentric sleeve elements. These sleeve elements are operatively interconnected by control linkage which, in turn, is connected to an actuating member for effecting simultaneous movement of the axes of rotation of the blanket rolls in the same directions. Via a neutral or throw off position, the axes of rotation of the blanket rolls can be moved to two different positions which permit the printing of a plurality of colors on that side of the web corresponding to the particular position to which the blanket rolls were selected to be moved.

Abstract: To permit, selectively, lithographic printing, flexo printing, or direct lithographic printing on a printing machine with the same direction of rotation of the respective cylinders, a liquid application system (11) including a liquid application roller (15) is selectively positionable for engagement either with a plate cylinder (4, 5) of a lithographic system, the rubber blanket cylinder (2, 3) for direct lithographic printing, the plate cylinder then acting as a form ink transfer cylinder which is being continuously inked; or for engagement with the blanket cylinder, with a flexo printing plate applied to the blanket cylinder, and the plate cylinder being placed out of engagement with the blanket cylinder, the damping liquid for lithographic printing being replaced by flexo-printing ink, and the position (FIG.

Abstract: The invention relates to a drive arrangement for a changeable satellite printing mechanism of a rotary printing machine in which at least two main subject matter printing cylinders, that is, cylinders directly carrying subject matter to be printed, or transfer cylinders, can be selectively engaged with a common counter cylinder or with each other, in which arrangement the main subject matter printing cylinders can be selectively coupled with the counter cylinder or with each other while maintaining registry by selective teeth engagement of one or two sets of cylinder gears secured to the drive shafts of the printing cylinders, and at least one of the two subject matter cylinders is rotatable about a predetermined angle upon shifting of their drive shafts.

Abstract: A method and apparatus for conversion of a web fed letterpress unit (10) into a web fed offset printing press unit (42) having a main frame (12) an auxiliary frame (44) inside the main frame for receiving cylinders, a pair of offset plate cylinders (46 and 46a) for mounting printing plates thereon, an inking arrangement (16, 18 and 20) for applying films of ink to the plates, and a pair of blanket cylinders 48 and 48a) in close proximity of a position for respective rolling contact with the plates on the plate cylinder and the other blanket cylinder. An offset press gear train (114) is installed outside the frames if the shafts for the cylinders can be extended through the bores (56, 56a, 58, 58a, 76 and 112) in the main frame left from the removed letterpress unit cylinders. Otherwise the gear train (54) is placed inside the main frame. Pilots (60, 60a, 62 and 62a) for insertion into bores in the main frame guide the installation of the auxiliary frame.