Abstract: A device for printing hollow bodies includes a rubber blanket cylinder. A supply device, which guides the hollow bodies to the rubber blanket cylinder, is provided. The supply device comprises a mandrel which is rotated by a drive. One of the hollow bodies to be printed is arranged coaxially on the mandrel. An axial spacing between the mandrel and the rubber blanket cylinder can be changed as a result of an adjusting movement of the supply device. The adjusting movement of the supply device is a linear adjusting movement. The supply device is configured as a linear system which radially supplies the hollow bodies to the rubber blanket cylinder individually and one after the other. The supply device has multiple different positions, each of which places the respective hollow body to be printed, along the adjustment path of the supply device. The positions are arranged at different respective radial distances with respect to the rubber blanket cylinder.

Abstract: There is described an inking apparatus of a printing press, in particular an offset or letterpress printing press, comprising at least one ink duct (11, 12) with an ink supply roller (13, 14), an ink roller train (30) comprising at least one inking roller (31) which receives ink from the at least one ink duct (11, 12), and at least one vibrator roller (15, 16) interposed between the ink supply roller (13, 4) and the inking roller (31), which vibrator roller (15, 16) is swung back and forth between the ink supply roller (13, 14) and the inking roller (31) and intermittently transfers ink from the ink supply roller (13, 14) to the inking roller (31). A circumference of the vibrator roller (15, 16) exhibits an ink-transfer 10 structure (15a, 16a) which reflects a desired inking profile of a printing plate to be inked by the inking apparatus and is designed to modulate a quantity of ink transferred by the vibrator roller (15, 16).

Abstract: In some examples, an apparatus to apply a coating to a media includes a first roller to receive a continuous belt that is to receive a coating from a second roller and to transfer the coating to the media, the first roller having a variable dimension to provide an adjustable width of the continuous belt to the second roller.

Abstract: Inking units of a printing unit having at least one first inking unit roll and having a second inking unit roll which can be pivoted between the first inking unit roll and a third inking unit roll, at a distance from the first inking unit roll. A pivot drive for pivoting the second inking unit roll is provided with a drive assembly which is mechanically independent from the rotation of cylinders of the printing unit and also from inking unit rolls provided in the inking unit. A screwing down force for at least one of the first and third inking unit rolls can be set by one of predefining and changing a set point value relating to the drive force of the drive assembly remotely by the actuation of an adjusting assembly.

Abstract: A cylindrical can decorator inker assembly having a non-oscillating first transfer roll, a non-oscillating second transfer roll and a non-oscillating third transfer roll, and further having axially oscillating distributor and ghost chaser rolls to prevent ghosting on the decorated cans. The inker assembly preferably has an improved oscillator drive assembly, oscillating roll structure, transfer roll structure and inker assembly mount.

Abstract: A printing press includes an anilox printing unit having a screen roller and a feed blade as components, in which ink accumulates on an outer side of the feed blade during printing. A method for operating the anilox printing unit includes removing the accumulated ink from the feed blade by moving one of the two components relative to the other of the two components in a first direction in a first step, causing the accumulated ink to be flattened by the feed blade and to be spread onto the screen roller. The component that was moved in the first direction in the first step may be moved in an opposite, second direction in a second step, causing the accumulated ink to be scraped off the screen roller by the feed blade.

Abstract: A method for operating a printing unit of a printing press includes operating the printing unit in a first operating mode, for example printing operation, and in a second operating mode, for example maintenance operation. In the first operating mode, a printing unit cylinder and a distributor roller are driven rotationally by a first motor and the distributor roller is driven axially by a second motor. In the second operating mode, the distributor roller is driven rotationally by a third motor and the distributor roller is driven axially by the second motor. A printing press for carrying out the method is also provided.

Abstract: A cylindrical can decorator inker assembly having a non-oscillating first transfer roll, a non-oscillating second transfer roll and a non-oscillating third transfer roll, and further having axially oscillating distributor and ghost chaser rolls to prevent ghosting on the decorated cans. The inker assembly preferably has an improved oscillator drive assembly, oscillating roll structure, transfer roll structure and inker assembly mount.

Abstract: A color deck of a printing machine is usable to ink a printing cylinder. A roller nip is formed by at least one friction cylinder that is driven by a drive motor for rotary movement. A freewheel clutch is situated between the first friction cylinder and the drive motor for that first friction cylinder.

Abstract: A roller of a printing machine includes a device for use in the generation of an axial oscillating movement of the rotating roller. The device includes a drive that is comprised of a pump which pressurizes a working fluid. The pump is arranged inside of the roller.

Abstract: A method for operating a printing machine in a print operating mode and another operating mode, for example a maintenance mode. In the print operating mode, bringing a vibrating roller periodically into contact with a first roller of an inking unit, driving the first roller rotationally by a first motor, driving a second roller of the inking unit rotationally by a second motor, transmitting no torque from the first motor to the second roller through a clutch therebetween, and activating the first motor by a control device causing the first roller to rotate at a rotational speed in a constant ratio to a rotational speed of the second roller. In the other operating mode, driving the first and second rollers rotationally by the first motor and transmitting torque from the first motor to the second roller through the clutch. A printing machine for carrying out the method Is also provided.

Abstract: A press contains an oscillating doctor and a motor for driving the oscillating doctor axially. The press further has at least one oscillating roller (ink distributor roller and/or damping solution distributor roller) and an oscillating mechanism, via which the oscillating roller is connected to the motor such that the oscillating roller and the oscillating doctor can be driven axially together by the motor.

Abstract: The inking system of an offset lithography press incorporates certain rollers running at different speeds. The hard rollers do not oscillate and the form rollers and the soft transfer rollers of the inking system oscillate endways.

Abstract: The inking system of an offset lithography press incorporates certain rollers running at different speeds. The hard rollers do not oscillate and the form rollers and the soft transfer rollers of the inking system oscillate endways.

Abstract: In a printing press, an adjustment system for positioning a rolling element such as a form roller or an impression cylinder relative to a first cylinder having a first diameter and relative to at least a second cylinder adapted to replace the first cylinder and having a second diameter different than the first diameter, the system comprising an actuating member operable to displace the rolling element relative to the first cylinder and having a pivotable fixed first end and a second end mechanically linked to the rolling element, the actuating member providing sufficient displacement to bring the rolling element into contact with the first cylinder such that a predetermined contact pressure therebetween is reached, the actuating member also being operable to bring the rolling element into contact with the second cylinder such that the predetermined contact pressure therebetween is reached. A method for displacing a rolling element is also presented.

Abstract: In an oscillating roller swing device including an oscillating roller, a rotating shaft having an inclined shaft portion, a cylindrical sleeve rotatably supported on the inclined shaft portion of the rotating shaft, a disk rotatably supported on the sleeve, and an oscillation drive motor for rotating the rotating shaft, an oscillation amount adjusting device for an oscillating roller comprises: a fitting groove provided in the sleeve; a parallel shaft portion having an axis parallel to the axis of the oscillating roller; a rotating member rotatably supported on the parallel shaft portion and provided with a fitting protrusion engaging the fitting groove of the sleeve; and an oscillation amount adjusting motor for rotating the rotating member relative to the rotating shaft.

Abstract: An oscillating mechanism for a distributor roll of a press has a spatial crank mechanism.

Abstract: In a printing press, ink fountain keys are disposed to be movable toward and away from an ink fountain roller of an ink fountain to allow them to have a predetermined gap therebetween and hence the amount of ink to be fed to a downstream roller to be determined. The ink fountain roller is rotated while ink is prevented from being fed to the downstream roller. At least one of the ink fountain keys is moved so as to allow the at least one of the fountain keys to change a position thereof relative to the ink fountain roller of the ink fountain with time. With this arrangement, it is possible to improve an ink kneading effect produced by the rotation of the ink fountain roller without the necessity to manually knead ink in the ink fountain by the operator and the necessity to provide any ink kneading device or unit independently of the printing press.

Abstract: A method of controlling an ink transfer roller is provided. This method achieves stabilized printing quality by evenly distributing ink transfer actions of the ink transfer roller for the number of rotation of a plate cylinder. The ink transfer action of an ink transfer roller is controlled based on the fact whether a value obtained by setting the value of C after calculation as a hysteresis value and adding the number ratio thereto exceeds a predetermined basic value or not, thereby allowing the ink transfer roller to perform ink transfer actions evenly at the number ratio set by an operator. With this method, unevenness in printing quality can be prevented.

Abstract: A printing group includes at least one printing group cylinder and one inking system with at least one roller. The printing group cylinder and the inking system are driven for rotation by different drive motors via respective mechanically independent transmissions. Every rotational transmission is configured as a transmission that is closed off from the exterior of the printing group.

Abstract: An inking system is comprised of rollers. At least one roller has a barrel with at least two separate sections. One of these casing sections is arranged in a manner which permits it to be changed independently of the other casing section.

Abstract: A short inking unit for a rotary printing machine is provided. The short inking unit includes a changeable machine glazing cylinder.

Abstract: A method for conditioning a printing ink in a printing press includes providing an ink duct roller and a metering device, operating the ink duct roller in conjunction with the metering device for liquefying the printing ink before a start of printing, and providing a further roller for removing the printing ink from the ink duct roller. Removal of the printing ink from the ink duct roller by the further roller is held in a suppressed state, while simultaneously rotating the ink duct roller at a conditioning rotational speed, and simultaneously controlling the metering device pursuant to a conditioning profile, for only partially opening the metering device at least intermittently. A printing press for performing the method is also provided.

Abstract: A printing press comprises an oscillating roller capable of rotating circumferentially and moving axially in a reciprocating manner, and does rainbow printing on a sheet, supplied from a feeder, in a printing unit. The printing press includes an oscillation width control device and an oscillation frequency control device for exercising control such that the oscillating roller moves axially in a reciprocating manner when printing is started in a state in which the axially moving motion of the oscillating roller is at a standstill. The printing press can automatically start the oscillating motion of the ink oscillating roller when printing is started from the state of the oscillating motion of the oscillating roller being stopped at the time of ink conditioning in rainbow printing, thereby decreasing the number of defective sheets and improving the ease of operation.

Abstract: A form roller apparatus for a printing press includes an ink form roller, compression coil spring, bolt, and U-groove. The ink form roller is in contact with an oscillating roller, and slides in an axial direction to follow motion of the oscillating roller in an axial direction. The ink form roller has a roller shaft which is supported rotatably and a roller main body which is supported to be movable in the axial direction of the roller shaft. The compression coil spring biases the roller main body in the axial direction. The bolt moves forward/backward in a radial direction at an end of the roller shaft. The U-groove is provided to the roller main body and is engaged by the bolt to regulate slide motion of the ink form roller in the axial direction.

Abstract: A form roller for use in an offset lithographic printing press comprises a stationary shaft and an eccentric roller supported on the shaft for rotation around the shaft and for oscillation along the length of the shaft. One or more cams are mounted on the shaft for controlling the operation of the rollers therealong. The exterior surface of the roller comprises an impregnated elastomeric material.

Abstract: An inking unit for a printing machine, which is assigned to a printing form, includes a first distributor roller and a second distributor roller, the first distributor roller being in rolling contact simultaneously with two ink applicator rollers, and being axially oscillatable more slowly and disposed more closely to the printing form than is the second distributor roller; and a printing machine including the inking unit.

Abstract: A form roller apparatus for a printing press includes an ink form roller, compression coil spring, bolt, and U-groove. The ink form roller is in contact with an oscillating roller, and slides in an axial direction to follow motion of the oscillating roller in an axial direction. The ink form roller has a roller shaft which is supported rotatably and a roller main body which is supported to be movable in the axial direction of the roller shaft. The compression coil spring biases the roller main body in the axial direction. The bolt moves forward/backward in a radial direction at an end of the roller shaft. The U-groove is provided to the roller main body and is engaged by the bolt to regulate slide motion of the ink form roller in the axial direction.

Abstract: A combination of a distributor roller of a printing machine and a traversing mechanism for the distributor roller, includes worm gearing with an externally toothed worm and a worm wheel meshing therewith. The worm gearing is disposed in the distributor roller. The invention also includes an inking unit of a printing machine, which has the combination as well as a printing press having the combination.

Abstract: A printing press with a doctor blade device (24), which has a doctor blade (26), which can be placed against a cylinder (10), wherein the doctor blade (26) is caused to oscillate with a frequency of at least 1 Hz by an oscillator (38).

Abstract: A method for producing an effect upon an emulsion formed of a printing ink and a dampening solution on a roller in a printing machine includes introducing oscillations produced by an oscillation exciting device of the printing machine, which oscillates at a frequency corresponding to that of ultrasound, into the emulsion on the roller; and a device suitable for performing the method.

Abstract: A driving device for printing machines, having a rod for oscillatingly moving a distributor roller in axial direction, includes a joint via which the rod is connected to the distributor roller, the joint permitting relative movement between the rod and the distributor roller so as to compensate for a displacement of the distributor roller perpendicularly to the axial direction of the distributor roller; and a printing machine having the driving device.

Abstract: A method of tempering a printing press with a circulating tempering medium includes regulating a temperature of the tempering medium. The temperature at a first measurement location is measured for purposes of control during production printing by the printing press. The temperature at a second measurement location is measured during a tempering phase of the printing press preceding production printing.

Abstract: A form roller for use in an offset lithographic printing press comprises a stationary shaft and an eccentric roller supported on the shaft for rotation around the shaft and for oscillation along the length of the shaft. One or more cams are mounted on the shaft for controlling the operation of the rollers therealong. The exterior surface of the roller comprises an impregnated elastomeric material.

Abstract: A method for identifying a lateral position of a vibrator roll geared to a plate cylinder in a printing press includes the steps of sensing a reference lateral position of a vibrator roll, setting a counter to a setting corresponding to the reference lateral position of the vibrator roll and rotating a plate cylinder. The lateral position of the vibrator roll changes as a result of the rotating of the plate cylinder and the counter changes as a function of the rotating of the plate cylinder.

Abstract: A form roller for use in an offset lithographic printing press comprises a stationary shaft and an eccentric roller supported on the shaft for rotation around the shaft and for oscillation along the length of the shaft. One or more cams are mounted on the shaft for controlling the operation of the rollers therealong. The exterior surface of the roller comprises an impregnated elastomeric material.

Abstract: A device for internal mass balancing in self-reciprocating rolls, in which a balancing weight is arranged so as to permit a force (Fa) in the direction opposite to a reciprocating movement (A,B).

Abstract: A device for varying the stroke amplitude of at least one axially oscillating distributor roller in an application unit of a rotary printing press, includes a distributor roller drivable by a distributor stroke drive via a distributor stroke transmission including a coulisse having a groove and being adjustable from a first position to a second position, and a sliding block movable in the groove. The device having a first transmission member carrying the coulisse, and a second transmission member carrying the sliding block. The distributor stroke transmission is formed of the first and second transmission members. The coulisse is disposed adjustably relative to the first transmission member. Both first and second transmission members are drivable by the distributor stroke drive. The device also has an actuator for adjusting the coulisse. The actuator is carried by at least one of the first and second transmission members.

Abstract: A printing press comprises an oscillating roller capable of rotating circumferentially and moving axially in a reciprocating manner, and does rainbow printing on a sheet, supplied from a feeder, in a printing unit. The printing press includes an oscillation width control device and an oscillation frequency control device for exercising control such that the oscillating roller moves axially in a reciprocating manner when printing is started in a state in which the axially moving motion of the oscillating roller is at a standstill. The printing press can automatically start the oscillating motion of the ink oscillating roller when printing is started from the state of the oscillating motion of the oscillating roller being stopped at the time of ink conditioning in rainbow printing, thereby decreasing the number of defective sheets and improving the ease of operation.

Abstract: A combination of a distributor roller of a printing machine and a traversing mechanism for the distributor roller, includes worm gearing with an externally toothed worm and a worm wheel meshing therewith. The worm gearing is disposed in the distributor roller. The invention also includes an inking unit of a printing machine, which has the combination as well as a printing press having the combination.

Abstract: A drive for a distributor roller in a printing machine includes a drive cam for driving the distributor roller, the drive cam being formed with a cam track and having a rotational axis axially offset eccentrically with respect to a rotational axis of the distributor roller. The drive cam is drivably connected to a motor for rotating the drive cam about the rotational axis of the cam, and an adjusting device is assigned to the drive cam for adjusting an oblique position of the cam track with respect to the rotational axis of the cam.

Abstract: Differently colored inks are applied in close proximity to each other during inking of an etched or engraved surface of a die or plate in a printing press. The spacing between the inks is controlled by the pressure of a transfer roller against the die or plate surface. The spacing can be reduced to effectively zero so that the inks effectively touch each other on the die or plate. Cross contamination of the inks when the transfer roller picks up the inks from a fountain roller is prevented.

Abstract: A method for reducing vibrations in a printing press, the printing press having a first plate cylinder independently registrable from a second print cylinder. The method includes the steps of determining a lateral position of the first vibrator, roll with respect to the second vibrator roll and rotating the first plate cylinder with respect to the second plate cylinder so as to change the lateral position of the first vibrator roll with respect to the second vibrator roll. A printing press has a controller receiving an input from at least one sensor, the controller rotating the first plate cylinder with respect to the second plate cylinder so as to alter a phase between the first vibrator roll and the second vibrator roll as a function of the input.

Abstract: A system for controlling a temperature of a rotary machine having a hollow roller chain with ink vibratory rollers and a plate cylinders such as used in a printing head, the system comprising a heat transfer fluid, a device for cooling the heat transfer fluid, a closed loop conduit, a device for passing the heat transfer fluid through the ink vibratory rollers, a solenoid valve mounted on the conduit, the solenoid valve being either fully opened or fully closed, temperature sensors to sense the temperature of the ink vibratory rollers, and a reservoir for the heat transfer fluid. The solenoid valves being either fully opened or fully closed allows for quick and precise temperature adjustments in real-time within a very narrow range.

Abstract: An oscillation apparatus includes an oscillation mechanism for reciprocating an oscillating roller which can be rotated in the circumferential direction and can be reciprocated along the axial direction; an oscillation-width adjustment mechanism for adjusting the oscillation width of the oscillating roller; an oscillation-mechanism drive motor for operating the oscillation mechanism; an oscillation-width adjustment motor for operating the oscillation-width adjustment mechanism; oscillation-width controller for controlling operation of the oscillation-width adjustment motor such that the oscillation width of the oscillating roller attains a designated value; and oscillation-number controller for controlling operation of the oscillation-mechanism drive motor, on the basis of the number of revolutions of the plate cylinder, such that the number of oscillations of the oscillating roller per unit number of revolutions of the plate cylinder attains a designated value.

Abstract: A method for controlling the ink quantity in an inking unit of a printing machine by a predetermined nominal value, using a vibrator roller oscillating between a fountain roller and the inking unit, and picking up an ink portion and surrendering it to the inking unit with which the vibrator roller is in contact, includes varying the width of an ink stripe on the vibrator roller, depending upon the nominal value, by adjusting the size of the transferred ink portion, for a modification in the nominal value, from a size (FI) corresponding to the nominal value prior to modification, to at least one intermediate size (Fz) lying beyond a size (Fx) corresponding to the modified nominal value and, subsequent to the expiration of a transition time interval ([t1,t2]), adjusting the intermediate size (Fz) of the ink portion back to the size (Fx) thereof corresponding to the modified nominal value.

Abstract: Differently colored inks are applied in close proximity to each other during inking of an etched or engraved surface of a die or plate in a printing press. The spacing between the inks is controlled by the pressure of a transfer roller against the die or plate surface. The spacing can be reduced to effectively zero so that the inks effectively touch each other on the die or plate. Cross contamination of the inks when the transfer roller picks up the inks from a fountain roller is prevented.

Abstract: An inking unit in a printing press includes an ink-metering device having at least one metering element operatively engaging with a roller, the roller being one of an ink form roller and a roller operatively engaging with an ink form roller, and an oscillation device assigned to the metering element for mounting the metering element so that it is oscillatable between a feeding position and a spaced-away position of the metering element.

Abstract: An inking unit for a printing machine, which is assigned to a printing form, includes a first distributor roller and a second distributor roller, the first distributor roller being in rolling contact simultaneously with two ink applicator rollers, and being axially oscillatable more slowly and disposed more closely to the printing form than is the second distributor roller; and a printing machine including the inking unit.

Abstract: An inking arrangement for printing presses which comprises a plurality of vibrating rollers switchable between two positions between a fountain roller and a distributing roller. A support member, has fitted therearound a plurality of movable members each formed with a rectangular bore having the support member inserted therethrough with a clearance provided in the bore in the forward or rearward widthwise direction of the support member. The vibrating rollers are rotatably mounted on the respective movable members. Change-over devices are provided between the support member and the movable members for moving the movable members by controlling a supply of air with switching valves.