Abstract: A marking device (10) comprises a frame (1) (of frame plates (12,14)) to which are fixed first and second motors (16,18). A carriage frame (40) is pivoted in the frame about a screw axis (22). A marking head (30) is mounted on the carriage frame for movement in a direction parallel the screw axis. A drive screw (20) is rotationally mounted in the frame along the screw axis and is driven by the first motor (16). The carriage frame is journalled on said drive screw to permit said pivoting about the screw axis. The marking head is driven by rotation of the screw, the carriage frame being pivoted by the second motor. The carriage frame (20) comprises a bar (32) on which the marking head slides. The bar is disposed parallel the drive screw. The bar has at each end an arm (34,36) pivoted on bearings (35,37) on the drive screw. One arm (36) has an extension (66) fixed to a belt (58) disposed around two idler pulleys (62,64) and a motor pulley (60) driven by the second motor.

Abstract: A device for guiding sheet-like copies which are severed from a material web in a cutting nip of a cutting-cylinder pair, including a copy guide disposed in an outlet wedge of the cutting-cylinder pair for gripping leading ends of the sheet-like copies for guiding the copies, the copy guide including revolving transport elements, and actuating drives for displacing the revolving transport elements in a lateral direction so as to adapt the transport elements to different positions and widths of material webs.

Abstract: The clamping device is used to adjust at least one register element in a printing machine. The device has an upper clamping rail, to which the register element is fixed. The upper clamping rail can be moved in a guide and fixed in position in order to adjust the register element.

Abstract: A printing device includes a plurality of print heads, each of which has a printing zone. An extension of this printing zone in a direction of printing defines a line height and an extention of this printing zone perpendicular to the direction of printing defines a column width. The printing heads are arranged in several parallel rows which are located at a distance from one another. The print heads in different rows are offset in relation to each other direction perpendicular to the direction of printing. A separation distance between the print heads in each row corresponds to the column width multiplied by the number of rows. The distance between the rows corresponds to the line height multiplied by the number of rows plus one.

Abstract: A printer that uses a roll-shaped printing medium comprising a printing surface on which images are printed, a releasably adhered printing portion, and a release portion holding the adhered printing portion includes a conveying device conveying the printing medium while pulling out the printing medium by a predetermined amount every time an image is to be printed; a printing member printing an image with respect to the printing medium conveyed by the conveying device; a half-cutting unit cutting off the printing portion of the printing medium except for the release portion, along the conveying direction of the image printed by the printing member, at the interval corresponding to the dimension of the image in the width direction perpendicular to the conveying direction; and a cutting unit cutting the printing medium along the width direction, at the positions corresponding to the dimension of the aforementioned image in the conveying direction.

Abstract: As a rotational reference position of a rotating drum is detected by a rotational position detection sensor for each rotation of the rotating drum, a rotational position of the rotating drum at a time of detection can be known. Subsequent to a signal for instructing stop of the rotating drum being input, the rotational reference position is detected. Then, a stop position calculation processing section calculates a stop control pulse for stopping the rotating drum from the rotational position at a trailing edge chuck detaching position. Thus, the rotating drum is reliably stopped at the trailing edge chuck detaching position. A stop processing is performed by a rotating drum drive control section when the rotational reference position is detected after the calculation. As a result, the stop position is not shifted by the time required for calculation and generation of the stop control pulse.

Abstract: In an exposure device for exposing thermal printing plates having a plate drum holding the printing plates and a pressure roller pressing the pressure plates onto the plate drum during the clamping and unclamping of the printing plates, a device for eliminating combustion residues in an exposer for printing plates includes a pick-up roller in contact with the pressure roller and picking up the combustion residues adhering to the pressure roller. The pick-up roller preferably has an adhesive surface and the pressure roller has a non-adhesive surface.

Abstract: A fanout compensator for a printing press, which comprises a rotary body formation, which has foot sections and head sections alternatingly next to each other along a longitudinal axis. The foot sections and head sections form a wave-shaped surface in order to deform a web to be printed on. The web wraps around the rotary body formation, in a wave-shaped pattern at right angles to the direction of conveying of the web. Fluid channels, which open on the surface of the rotary body formation, are formed in the rotary body formation. The rotary body formation has a fluid connection connected to the fluid channels in order to guide a pressurized fluid to the fluid channels and through the fluid channels to the surface of the rotary body formation.

Abstract: A sheet guide apparatus for use in a rotary printing press which is adapted for the smear and mark free transfer of sheets between two sheet holding and transfer systems, such as a pair of sheet-carrying cylinders or a sheet-carrying cylinder and circulating sheet conveyor. The sheet guide apparatus includes a sheet guide having a guide surface disposed beneath the transfer area, and a pneumatic system for blowing a positive pressure air stream in the direction of a transfer area or tangent point between the sheet holding and transfer systems. A further pneumatic system optionally may be provided for drawing or blowing air through apertures in the guide surface.

Abstract: A hybrid printing apparatus and related control method have a first print section 1a composed of a plurality of printing machines located in parallel to one another, and a second print section 1b composed of one printing machine and connected to the first print section, via a print medium transfer section 1c having a transfer passage 31 composed of discrete passage components which include change-over rollers 32 to change over start/stop operations in transfer of print media and medium detection sensors 33 to detect leading edges of the print media discharged from the respective printing machines of the first print section 1a, respectively. A control section 1d controls timings at which the change-over rollers 32 are changed over, so as to sequentially transfer the printing media from the first section 1a to the second print section 1b in response to detection signals from the medium detection sensors 33.

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

Abstract: A very low percentage dot screen is formed on a flexographic plate which prevents the severe compression normally found adjacent to zero percent areas of the flexographic plate. The dot screen reduces dot gain by distributing the compressive force of the flexographic printing plate on the printing surface. The total area of the dot screen is kept to a very low percentage of the total surface area being printed so that it will not alter perceived color.

Abstract: The present invention relates to a method of printing polymer films and corresponding articles. The invention is useful for providing dimensional stability during printing and/or improving the print quality, particularly for contact or thermal printing methods such as thermal mass transfer printing.

Abstract: An apparatus for authenticating an object on the basis of incorporating onto the object at least one security feature known as a microdot which includes plural unique microscopic patterned markers each of which include indicia and the method of making such microdots.

Abstract: In a sheet-processing rotary printing machine operatable in recto printing and recto/verso printing modes, there is provided a device for reversing sheets, which includes a transfer drum bounded by two sheet-guiding cylinders, a reversing/storage drum and an additional transport element assigned to the transfer drum, the transfer drum being drivable in opposite directions of rotation in the recto printing and the recto/verso printing modes, and gripper systems actable in both directions of rotation of the transfer drum, the gripper systems being accommodated on an imaginary jacket surface of the transfer drum; a printing unit including the components of the device; and the printing machine being a multicolor printing machine.

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

Abstract: There is provided a lock system for securing a printer door to prevent theft of an ink cartridge. The lock system comprises a lock housing that is attachable adjacent the printer door and which has a lateral aperture extending generally parallel thereto. The lock system further comprises a locking member disposed within the lateral aperture and which is slidable therealong between unlock and lock positions. Its locking portion becomes substantially retracted within the lateral aperture when in the unlock position. The locking portion becomes extended over the printer door when in the lock position to secure the same and prevent theft of the ink cartridge thereby.

Abstract: A process is provided for detecting the position of a paper web, especially in wet offset printing, wherein a strip free from ink or moistening agent is detected. A device is provided for detecting the position of a cut web, especially in wet offset printing. The device has a sensor for detecting the water content in the paper web.

Abstract: A method for printing an image onto an object including applying printing ink to a carrier element constructed of a flexible layer-shaped material and in communication with a pressing device having an internal region which can be pressurized with a fluid, positioning the carrier element and the object in contact with one another without substantially increasing the internal pressure of the pressing device and then causing a substantial increase of pressure in the internal region of the pressing device whereby a portion of the carrier element is urged to further extend around the object. The carrier element is stretched at least during the step of applying the printing ink.