Abstract: Herein includes an offset printing apparatus for transferring and optionally fixing a phase change ink onto a print medium including a) a phase change ink application component for applying a phase change ink in a phase change ink image to an imaging member; b) an imaging member for accepting, transferring and optionally fixing the phase change ink image to the print medium, the imaging member having i) an imaging substrate, and thereover ii) an outer coating with a urethane and a conductive salt; and c) a release agent management system for supplying a release agent to the imaging member, wherein an amount of release agent needed for transfer and optionally fixing the phase change ink image is reduced.

Abstract: In a printing press having a transfer cylinder for transferring a freshly printed substrate, an anti-marking device is provided. The anti-marking device comprises a flexible jacket comprised of fluoropolymer to engage the freshly printed substrate as it is transferred over the transfer cylinder, the anti-marking device removably attached with free play to the transfer cylinder. In an embodiment, a base cover is installed on the transfer cylinder between the anti-marking device and the transfer cylinder.

Abstract: To transfer a coating in image form from a transfer foil to a print sheet, adhesive is applied in the form of the image to said sheet. In a foil transfer module (2), the carrier foil with the coating in image form is then brought into contact with the print sheet using contact pressure, so that the coating adheres to the adhesive pints and an image is produced. To improve the function, simplify the device and increase the flexibility of the method, a transfer cylinder (3) is provided with a covering that has a variable cover thickness (25), in order to adapt the surface speed of the transfer cylinder (3).

Abstract: The present invention relates to a printing method by an offset printing press and an offset printing press and has an object to carry out a substrate process for low-whiteness printing paper such as paper for newspaper with substrate treatment agent and to enhance the print quality while preventing appearance of muddiness in printing ink by the substrate treatment agent. The present invention is configured such that substrate treatment agent such as low-whiteness enhancement agent is supplied to a printing face of printing paper, and thereafter the substrate treatment agent supplied to the printing face is dried and then offset printing is carried out for the printing paper by a printing apparatus.

Abstract: An offset printing group is part of a printing machine which is used for printing newspapers. The offset printing group includes a printing cylinder and a transfer cylinder. The length of the transfer cylinder corresponds to at least six widths of newspaper pages. Two blankets are arranged adjacent each other on the peripheral surface of the transfer cylinder. A width of each of these blankets in the axial direction of the transfer cylinder corresponds to three widths of newspaper pages.

Abstract: An offset printing unit has a first plate cylinder, a first blanket cylinder, at least one first inker roller, and a motor that drives the plate cylinder. The first plate cylinder supports a first printing plate and drive the first blanket cylinder. The first blanket cylinder supports a first printing blanket, rollingly engages the first plate cylinder, and rollingly engages a substrate. The at least one first inker roller supplies ink to the first plate and blanket cylinders and rollingly engages the first plate cylinder.

Abstract: A variable cutoff web printing press is provided including a first plate cylinder for printing a first color of first and second images and a second plate cylinder for printing a second color of the first and the second images. The printing press also includes a common blanket cylinder. The first and second plate cylinders contact the common blanket cylinder and transfer the first and second images to the common blanket cylinder. The printing press also includes a first transfer body for receiving the first image from the common blanket cylinder and transferring the first image to a web and a second transfer body for receiving the second image from the common blanket cylinder and transferring the second image to the web. A method of variable cutoff web printing is also provided.

Abstract: A printing unit of a printing press, such as a web press constructed as a periodical printing press, having at least one printing couple, wherein the printing couple or each printing couple comprises a form cylinder, a transfer cylinder, an inking unit, and preferably a dampening unit. A drive motor is associated with at least one printing couple, and drives the form cylinder or the transfer cylinder of a respective printing couple. In accordance with the invention, a flywheel mass is associated with at least one drive motor which drives the form cylinder or the transfer cylinder of the respective printing couple, where the flywheel mass is connected to the rotor of the respective drive motor in a torsionally rigid manner.

Abstract: The invention relates to a printing form (19) to be used in a printing unit of a printing press. Said printing form (19) is embodied as a panoramic printing form (19) and supports side by side printed images of a specific number n (n>1) of printed pages having a specific format (F1, F2). The printing form (19) has a width that substantially corresponds to a number of n=3 vertical printed pages in newspaper format (F1, F2) and supports side by side printed images of n=3 pages in newspaper format (F1, F2).

Abstract: A printing unit of a printing press includes at least two frame parts whose distance from each other can be varied. Each of these frame parts include two laterally spaced frame plates. The two frame plates in each of the frame parts accommodate at least one cylinder or roller which extends between them. The two lateral frame plates in each frame part are spaced from each other in an axial direction of the supported cylinder or roller. Adjacent ones of the frame parts are connectable to each other by abutting of their respective lateral frame plates. At least three locking and/or centering devices are used to align and to lock together the lateral frame plates of adjacent ones of the frame parts.

Abstract: A variable cutoff printing press is provided. The printing press includes a first plate cylinder rotating at a constant angular velocity and printing on a web during each revolution about a first plate cylinder axis and a first blanket cylinder rotating at varying angular velocities during each revolution about a first blanket cylinder axis. The first blanket cylinder comes in and out of contact with the first plate cylinder during operation. A method of variable cutoff printing is also provided.

Abstract: A sheet-fed offset printing press for printing on both sides of sheets has a compact construction and permits a number of color separations to be printed over one another in recto printing or recto and verso printing in a flexible manner and with high print quality. A plurality of printing units, which are disposed behind one another, each include at least one form cylinder, a transfer cylinder, a first impression cylinder and an inking unit having at least one ink applicator roll associated with the form cylinder. A second impression cylinder, which interacts with the transfer cylinder and the first impression cylinder, is provided in at least one printing unit.

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

Abstract: A method and apparatus for separating at least two bridges, especially gripper bars, of a segmented transport system for printing materials, e.g. sheets of paper in a printing press, include a transport system having a segmented electric linear drive with first and second primary parts constructed as segmented. The drive has a plurality of secondary parts constructed as carriages. Each secondary part assigned to the first primary part and each secondary part assigned to the second primary part are coupled by a crossmember to form a movable bridge. Two bridges in the same segment are moved jointly. A first bridge, reaching into a further segment due to jointly controlled movement, is moved individually under closed-loop control and separated from a second bridge, for locating the two bridges in different segments during further movement. Electrical and mechanical collisions of the bridges or of the carriages can therefore be eliminated.

Abstract: In a printing press including; a blanket cylinder gear driven by a drive motor of the printing press; a blanket cylinder including a notch, the blanket cylinder being rotationally driven by the blanket cylinder gear; a plate cylinder gear rotationally driven by the drive motor of the printing press through the blanket cylinder gear; and a plate cylinder including a notch at a position corresponding to the notch of the blanket cylinder, the plate cylinder being rotationally driven by the plate cylinder gear, a load motor is provided to the plate cylinder or the plate cylinder gear, and a braking force of the load motor is controlled according to load applied to the drive motor of the printing press.

Abstract: Herein includes an offset printing apparatus for transferring and optionally fixing a phase change ink onto a print medium including a) a phase change ink application component for applying a phase change ink in a phase change ink image to an imaging member; b) an imaging member for accepting, transferring and optionally fixing the phase change ink image to the print medium, the imaging member having i) an imaging substrate, and thereover ii) an outer coating with a urethane and a conductive salt; and c) a release agent management system for supplying a release agent to the imaging member, wherein an amount of release agent needed for transfer and optionally fixing the phase change ink image is reduced.

Abstract: A blanket fastening assembly for securing an image transfer blanket to an intermediate transfer member drum of an electrostatic printer comprising a resilient biasing arrangement adapted to be connected to an end of the blanket to act in use so as to resiliently tension the blanket, with at least one end portion of the blanket being held in use by a resilient biasing clamping member which is adapted to move during the operational life of the drum so as to accommodate stretching of the blanket whilst maintaining tension in the blanket.

Abstract: The purpose is to improve the usability of the film coating in a coating module for the transfer of image-forming layers from a transfer film to a printing material. A film transfer module is, for that purpose, arranged in a printing machine for the single-color or multicolor printing of printed sheets. Moreover, one or more coating installations, in the form of varnishing modules, are arranged before and/or after the printing machine. By the application of layers, a subject consisting of a film image and a printed image is coated over part of the surface or over the entire surface. The additional coats serve the function of providing protection, drying, or generating optical effects.

Abstract: The invention relates to a method and a device for the temperature control of inking groups (6) and dampening solutions of an offset printing press (2), wherein, in order to achieve the temperature control of the inking groups (6), a heat transfer medium that has previously been circulated by the inking groups (6) in a temperature control circuit of said inking group (34) is optionally cooled, and wherein, in order to achieve the temperature control of the dampening solution, the dampening solution that has previously been circulated by the inking groups (6) in a temperature control circuit of said inking group (34) is optionally cooled.

Abstract: A method of printing an electronic circuit or components thereof uses a printing machine to print a conductive structure on the front printing side (back side of the sheet) of a printing substrate. The sheet is then reversed and a decorative printing motif is printed on the back side in one work step. Alternatively, the circuit or components of a circuit may be printed by having a printing machine for color printing preceded by a printing machine for printing on the back side of the printing substrate. A chip is applied to the printing substrate where the back side of the printing sheet with the printing motif is cooled to prevent any negative effect on the printing motif and/or the printing substrate.

Abstract: At least one of a transverse elongation and a longitudinal elongation of a printing material are compensated for. The printing material passes through serially arranged printing couples in a printing press. A component of the transverse elongation is compensated for after passage of the printing material through a first printing couple and before its entry into a second printing couple. This can be accomplished by the use of a framing controller. Alternatively, this transverse elongation can be compensated for by the displacement of at least one printing form which is situated on a subsequent printing couple. The printing form can be displaced transverse to a production direction of the printing material, relative to a reference mark on the printing material. An elongation of the printing material, which is known at the time of image generation on a printing form of a subsequent printing couple can be compensated for by proper configuration or positioning of the printed image on the printing form.

Abstract: A variable cutoff printing press is provided that includes a plate cylinder, a first blanket cylinder including a first circumferential section movable with respect to a second circumferential section, and a second blanket cylinder including a third circumferential section movable with respect to a fourth circumferential section. The first, second, third and fourth circumferential sections contact the plate cylinder during a printing mode and print continuous images having a cutoff length on a web. A method of printing is also provided.

Abstract: A printing press is provided including a plate cylinder having an outer perimeter of a first length. A removable flexible continuous tubular plate having an inner perimeter of a second length is disposed about the plate cylinder. The second length is greater than the first length so that the inner perimeter of the removable flexible continuous tubular plate and the outer perimeter of the plate cylinder define a first gap during a printing mode. A method for varying cutoff in a printing press is also provided.

Abstract: A printing unit of compact construction includes an impression cylinder and a printing form cylinder to be pivoted around the impression cylinder about a pivot axis running parallel to an axis of rotation of the impression cylinder. A spacing between the axes of rotation of the printing form cylinder and of the impression cylinder can be varied and the printing form cylinder and the impression cylinder can be set against each other, to form a press nip in which a substrate can be printed. A first drive for producing a rotational movement of the printing form cylinder is connected to the printing form cylinder through a drive train. At least one component of the drive train has a torque axis running through the impression cylinder. A printing press having at least one printing unit and a process for producing labels or self-adhesive labels in a printing press, are also provided.

Abstract: A printing press is comprised of at least one dry offset printing unit. At least two different webs can be fed through the dry offset printing unit. In a first production mode “C” of the printing press, a first web is fed through the dry offset printing unit without a subsequent drying process. In a second production mode “H” of the printing press, a second web is fed through the dry offset printing unit and through an active dryer. In both the first and second production modes “C”, “H”, an inking unit of the printing unit is filled with the same ink.

Abstract: A blanket is located on an outer surface of a roller, such as a printing unit roller. The blanket has an elastic and/or a compressive layer with a surface pressure that depends on the degree of the impression. The layer is selected so that a depending of the surface pressure on the impression has, at least in some areas, a slope of less than 700 (N/cm2)/mm.

Abstract: A printing unit is comprised of at least two pairs of two cylinders each. The two cylinders in each pair are a transfer cylinder and a forme cylinder. The transfer cylinder and the forme cylinder are each embodied with a width sufficient for printing six newspaper pages arranged axially next to each other. The transfer cylinder of each pair cooperates with a counter-pressure cylinder, that is embodied as a satellite cylinder to form a printing head in a so-called print-in-place arrangement.

Abstract: A printing unit is comprised of at least two pairs of two cylinders each. The two cylinders in each pair are a transfer cylinder and a forme cylinder. The transfer cylinder and the forme cylinder are each embodied with a width sufficient for printing six newspaper pages arranged axially next to each other. The transfer cylinder of each pair cooperates with a counter-pressure cylinder, that is embodied as a satellite cylinder to form a printing head in a so-called print-in-place arrangement.

Abstract: A printing group of a printing press is comprised of a transfer cylinder, a forme cylinder and a first roller of an inking unit. That first inking unit roller cooperates, as an ink application roller, with the forme cylinder. The inking unit is provided with two axially traversing friction cylinders which are serially disposed in the ink path to the forme cylinder. The first inking unit roller has substantially the same diameter as the forme cylinder.

Abstract: A transport device for sleeve-shaped covers for cylinders in printing units of a printing press includes a translation element and a number of carrier elements for sleeve-shaped covers. The carrier elements are received on the translation element. A movement of the translation element causes at least a group of carrier elements to be positioned in the vicinity of cylinders of the printing press such that sleeve-shaped covers received on the carrier elements of the group are transferable directly from the carrier elements to the cylinders or that sleeve-shaped covers received on the cylinders are transferable directly to the carrier elements of the group. In the method of changing sleeve-shaped covers, groups of carrier elements are positioned in front of the cylinders so that the sleeve-shaped covers are taken off the cylinders and transferred directly to carrier elements or are transferred and mounted from carrier elements directly to cylinders and are mounted thereon.

Abstract: A printing blanket or dressing includes a dimensionally stable carrier plate which has ends that can be secured to a transfer cylinder. A coating is applied to the carrier plate and forms the lateral surface of the transfer cylinder. A recess is located in the printing blanket or dressing intermediate the ends of the blanket or dressing.

Abstract: A printing apparatus is disclosed which comprises a rotatable member, for example a cylinder (10) ratable about its longitudinal axis (12), drive means (16) for rotating the cylinder, means (22) for feeding liquid to the circumferential (20) surface of the cylinder to form droplets (18) of the liquid thereon, and means (32) for causing droplets to be released selectively from the cylinder (10) as it rotates. The droplets released are projected towards a substrate spaced from the cylinder, and control means are provided to monitor the rotation of the cylinder (10) and for controlling the droplet release means (32) to form a predetermined pattern of droplets on the substrate (44). The apparatus may provide a rapid supply of droplets, making it suitable for high throughout panting applications.

Abstract: An offset lithographic printing press combined with a gapped or seamed cylindrical offset printing blanket having pre-made blanket material mounted on a cylindrical sleeve is disclosed, wherein conventional, manufactured blanket material in flat form is adhered to a cylindrical sleeve to economically produce a cylindrical sleeved blanket. The leading and trailing ends of the flat blanket material are joined in close proximity such that a small gap is formed. A seam may be made with a filler material that fills the remaining gap resulting in a seamed sleeved blanket. In use, the blanket's printing surface, which excludes the gap or seam, is aligned with the printing plate's image-bearing surface. Consequently, no loss of print length results from the gap or seam.

Abstract: An offset lithography printing press and method wherein dampening structure applies a thin moisture layer directly to a blanket cylinder to facilitate separation between the blanket cylinder and paper or other printable sheet material when passing through a nip between the blanket cylinder and an impression cylinder.

Abstract: A printing group of a rotary printing press includes at least one forme cylinder and at least one transfer cylinder. The forme cylinder has at least two printing forme end channels. These two channels are spaced circumferentially. At least one of these forme cylinder end receiving channels rolls off against a channel in the transfer cylinder. One of the forme cylinder end receiving channels is at least partially covered by a printing forme carried by the forme cylinder.

Abstract: There is provided a method of winding up a transfer film and a device for performing transfer printing on printed sheets of paper, capable of eliminating the need to frequently replace the transfer film, thereby allowing the transfer film to be used over a prolonged time. According to the method of winding up a transfer film, the transfer film fed from a feed roll through a feed path is pressed onto a fed printed sheet to transfer patterns of the transfer film, and then the transfer film is wound up onto a windup roll through a windup path. During the rewind of the transfer film from the windup roll to the feed roll, a lateral position of the transfer film running along the feed path is detected, and the feed roll is moved in its axial direction to follow a lateral positional change of the transfer film.

Abstract: A printing apparatus for a liquid crystal display (LCD) device and a patterning method using the same is disclosed. The printing apparatus includes a printing plate; a printing roller to roll on the printing plate and to print a pattern material onto a substrate; a coating roller to transfer the pattern material to the printing roller; and a printing nozzle to coat the pattern material onto the coating roller.

Abstract: A variable cut-off offset press system and method of operation which utilizes a continuous image transfer belt is provided. The offset printing system comprises at least two plate cylinders adapted to have thereon respective printing sleeves. Each of the printing sleeves is adapted to receive colored ink from a respective ink source. An optional coating source may be provided to fully or partially coat the image transfer belt before inking. The system further comprises at least a impression cylinder, wherein the image transfer belt is positioned to contact each of the printing sleeves at respective nips formed between respective ones of the plate cylinders and the at least one impression cylinder. An image belt cleaning station adapted to remove residual ink or coating from the surface of the image transfer belt after image transfer of a multicolored image from the image transfer belt to a substrate is also provided.

Abstract: There is described a printing unit and a method for printing with flexographic inks. The printing unit includes a screen roller engaging a doctor blade system (3), and which is in continuous operation, either by engaging a motor (10) or by operation by the transmission (2) of the printing machine. The screen roller (1) of the printing unit interacts with a rubber sheet (16) which is disposed on a rubber sheet cylinder (4) at a position between a printing plate cylinder (5) and a back-pressure cylinder (6). A slot (7) is provided in the rubber sheet, used when the screen roller (1) is to be engaged with the rubber sheet (17).

Abstract: A printing press system includes a first machine line of a printing press, which is embodied as a newspaper printing press, and is provided with at least one first printing unit having printing group cylinders of a first maximum effective printing width. A second printing press, which is equipped with at least one second printing unit with printing group cylinders that have a second maximum effective printing width, is part of the first machine line. A dryer is located in alignment with the second printing unit. A former structure, having an effective width that is defined by the width of one, or of several formers disposed next to each other, and perpendicular to the feeding direction of the web to be folded, is also provided in the printing press system. At least one turning device is usable to transfer a web or a printed web, which has been printed in the first printing unit, to the former station.

Abstract: A printing press is configured such that the printing sheet is supplied from the paper feeding unit through the intermediate cylinder 14 while the ink is supplied from the ink apparatus to the blanket cylinder 11 through the printing cylinder 12 and, when the printing sheet passes between the blanket cylinder 11 and the impression cylinder 13, the ink is transferred from the blanket cylinder 11 and, thereby, printing is executed. In the printing press, the rotary encoder 31 detects the rotation angle of the blanket cylinder 11 and the control unit 32 receives the instructions of the head portion finding switches 33b, 33c and drives and controls the driving unit 16 and, thereby, the blanket cylinder 11 can be rotated and stopped to/at the blanket replacement angle for replacing the blanket 28 wound around the blanket cylinder 11.

Abstract: A method for processing lenticular foil in sheet-fed printing presses is provided, the lenticular foil having lens strips adjacently disposed and extending transversely to the running direction of the sheets. The method ensures that the lens strips proceed parallel to the sheet's front edge For determining the actual position of a sheet aligned according to a front edge, the position of a contact line between two adjacent lens strips is determined, and compared with a nominal position. If the actual position deviates from the nominal position, an adjusting value is generated for realizing a leading or trailing movement of plate cylinders making possible the nominal position, of a gripper sheet-holding system of a sheet-accelerating device mounted in a drum.

Abstract: A printing unit is comprised of at least two pairs of two cylinders each. The two cylinders in each pair are a transfer cylinder and a forme cylinder. The transfer cylinder and the forme cylinder are each embodied with a width sufficient for printing six newspaper pages arranged axially next to each other. The transfer cylinder of each pair cooperates with a counter-pressure cylinder, that is embodied as a satellite cylinder to form a printing head in a so-called print-in-place arrangement.

Abstract: A roller closing device is provided with an inner element and with an outer element. These two elements are arranged at least partially in a coaxial manner. The inner element can be deflected radially with respect to the outer element by the use of at least one elastic body which is arranged between the two elements. This elastic body is configured as a rolling diaphragm. A seal is configured between the inner element and the outer element. The seal closes off a gap between the two elements to prevent impurities from entering the roller closing device when any radial deflection of the inner element takes place.

Abstract: To provide a gear unit apparatus for a printer in which the assembling characteristics and maintenance workability of driving sections for transferring a printing paper to be printed can be improved, and particularly assembling, replacement and maintenance work can be easily performed on a platen roller and a transfer roller. The present invention focuses on unitizing a group of belts and a group of gears independently of a printer main body, and is configured such that a unit bracket that is detachable to a printer bracket is provided independently of the printer bracket, a drive motor, the belt group and the gear group are assembled to the unit bracket, and, when the unit bracket is attached to the printer bracket, a platen roller gear of a platen roller and a transfer roller gear of a transfer roller can be engaged with each other.

Abstract: A printing method realizes good reproducibility of an ink pattern and facilitates both the alignment operation between a printing plate and a blanket and the alignment operation between the blanket and a substrate, enabling the printing with positional accuracy as high as the TFT substrate can be fabricated. The flat portion of the printing plate and the flat portion of the endless belt-shaped blanket are contacted in the state where the said flat portions are opposed. Then, the said flat portions are detached, forming an ink pattern on the flat portion of the blanket. Thereafter, the flat portion of the blanket and the flat portion of the substrate are contacted in the state where the said flat portions are opposed. Subsequently, the said flat portions are detached, transferring the ink pattern to the flat portion of the substrate from the blanket.

Abstract: A liquid transfer apparatus includes a supply cylinder and viscosity reducing agent supply unit. The supply cylinder comes into contact with a transfer target body and performs transfer by transferring a transfer liquid to the transfer target body. The viscosity reducing agent supply unit supplies a viscosity reducing agent which reduces a viscosity of the transfer liquid to the supply cylinder during transfer.

Abstract: A liquid transfer method includes the steps of conveying a sheet by holding the sheet by a transport cylinder, and transferring a liquid to one surface of the sheet by a transfer cylinder opposing the transport cylinder and transferring the liquid to the other surface of the sheet by the transport cylinder. The step of transferring includes the step of positioning an edge of a region on one surface of the sheet, downstream in a sheet convey direction, where the liquid is to be transferred, upstream in the sheet convey direction of an edge of a region on the other surface of the sheet, downstream in the sheet convey direction, where the liquid is to be transferred. A liquid transfer apparatus is also disclosed.

Abstract: The invention relates to a roller cassette for semi-rotary machines, which can be inserted into offset printing units. The invention comprises at least three rollers, namely: at least one printing plate roller in the form of a first roller, one transfer roller in the form of a second roller and a printing cylinder or counter-cylinder in the form of a third roller. The invention is characterised in that the printing rollers (3) in the cassette are disposed in a semi-rotary configuration, with the second and third rollers being disposed in the same vertical plane or with a slight inclination in relation to said plane and the first roller being disposed in a tangential plane or inclined in relation to the plane of the second and third rollers. In this way, when the cassette is inserted into a printing unit (2) that is designed to receive roller cassettes, said unit can print with the specific printing characteristics of the semi-rotary rollers (3).

Abstract: A printing unit of a web-fed printing press is disclosed. The printing unit includes four printing couples where each printing couple includes a plate cylinder, a transfer cylinder, an inking system as well as, if applicable, a dampening system. The transfer cylinders of every two printing couples arranged horizontally next to one another which form a printing couple group, form a nip, through which a to-be-printed printing substrate can be conveyed. The center points of the transfer cylinders (rolling off one another) of every printing couple group each lie on a horizontally running line. Two printing couple groups offset from one another in the vertical direction are also offset from one another in the horizontal direction such that the print positions as well as the center points of the transfer cylinders and the plate cylinders of the printing couple groups are offset from one another in the horizontal direction.