21results about "Relief printing" patented technology

A security device is disclosed, comprising: a substrate having opposing first and second surfaces; on the first surface of the substrate, a surface relief structure formed of one or more cured, at least semi-transparent material(s); and on the second surface of the substrate, a print layer. In at least a first region of the security device in at least part of which the substrate is transparent or translucent, the surface relief structure and the print layer are each defined in accordance with a common image and are in alignment with one another, the surface relief structure exhibiting a first set of feature(s) of the common image and the print layer exhibiting a second set of feature(s) of the common image. The common image is exhibited by the surface relief structure and the print layer in combination with one another and the surface relief structure provides tactility to the common image.

A safety system (12) for an exit module (10) of a converting machine (4), the converting machine for processing of sheet material, the exit module for outlet of a stack (8) of processed sheet material and comprising a conveyor system (16) for transmission of said stack of processed sheet material, the safety system comprising: a presence detection system (22) for detection of an intruding object into an adaptive safety zone (24).

Primer layers for adhesion of a pressure sensitive adhesive material to a substrate are provided. The primer layer comprises a crosslinked polymer. In some embodiments, the primer layer has an atomic nitrogen content of greater than 6 wt%, and in some a ratio of atomic weight percent of oxygen to nitrogen of less than 3.0. In some embodiments the crosslinked polymer is the reaction product of an amine-functional base polymer such as a polyethylenimine (PEI) and a crosslinker, which may be a polyaziridine crosslinker. Also provided are two-layer constructions comprising the primer layer and a substrate layer; and tapes, such as flexographic plate mounting tapes, comprising the two-layer construction and a pressure sensitive adhesive layer.

A method according to the invention for operating a flexographic printing press, comprising a printing cylinder (16) carrying a sleeve (3) with at least one flexographic printing form (5) or a flexographic printing cylinder and an impression cylinder (17), wherein the printing register of the flexographic printing form or the flexographic printing cylinder is adjusted to a further flexographic printing form or to a further flexographic printing cylinder and / or the ink density is adjusted and / or a color inspection is carried out, wherein a sensor (402) is used, is characterized in that, prior to printing, an image (410) of the surface of the sleeve with the at least one flexographic printing form is captured by a camera (400) and the image is subjected to image processing, wherein at least one register mark (310) and / or at least one color measurement field (312) is xy-localized orThe invention enables cost-effective and high-quality printing in industrial flexographic printing. Furthermore, the method according to the invention advantageously enables further automation of the printing process.

A processing machine (01) for processing a substrate (02), wherein at least one alignment section (750) is arranged in front of at least one processing unit (600; 900) of the processing machine (01), wherein the at least one alignment section (750) has at least one first alignment area for aligning a tilt of a substrate (02) and at least one second alignment area for aligning an axial offset of the substrate (02), wherein at least one first sensor (704) for substrate alignment in the transport direction (T) is arranged in front of at least 75% of the transport sections (706) of the at least one alignment section (750), wherein at least one second sensor (704) for substrate alignment along the alignment section (750) is arranged within the at least one second alignment area, characterized in thatthat the alignment areas of the alignment section (750) each have at least two successive transport sections (706) in the transport direction (T), that the at least one sensor (704) for substrate alignment is designed as a sensor capable of detecting at least one imaging element of a substrate (02), that the at least one alignment section (750) has at least one main drive (M) for driving in the circumferential direction at least one transport subsection (707; 708) of the at least two transport sections (706) of the first alignment area, and that the at least one first sensor (704) for substrate alignment is connected to the at least one main drive (M) by means of at least one control unit.

A security device is provided, comprising one or more surface relief structure(s), each formed of one or more cured material(s), the surface relief structure(s) being disposed on a substantially flat substrate and defining a plurality of raised elements spaced from one another, the raised elements corresponding to elements of an image, whereby the plurality of raised elements varies across the surface relief structure(s) so as to exhibit a multi-tonal version of the image. Methods of manufacturing such devices are also disclosed.

This photosensitive resin composition comprises a thermoplastic elastomer (A), a liquid farnesene rubber (B), an ethylenic unsaturated compound (C), and a photoinitiator (D).

A method operates a flexographic printing press. The flexographic printing press includes a printing cylinder carrying a sleeve with at least one flexographic printing forme or a flexographic printing cylinder and an impression cylinder. At least one parameter of the flexographic printing press is set. The sleeve is marked with an ID, the ID is detected in a flexographic printing unit of the flexographic printing press or in the flexographic printing press. Data saved in association with the ID are transmitted to the flexographic printing unit or to the flexographic printing press, and the data are used when the parameter is set. In this manner, a cost-efficient way of producing high-quality prints in an industrial flexographic printing process is obtained. In addition, the method provides further automation of the printing process.

Primer layers for adhesion of a pressure sensitive adhesive material to a substrate are provided. The primer layer comprises a crosslinked polymer. In some embodiments, the primer layer has an atomic nitrogen content of greater than 6 wt %, and in some a ratio of atomic weight percent of oxygen to nitrogen of less than 3.0. In some embodiments the crosslinked polymer is the reaction product of an amine-functional base polymer such as a polyethylenimine (PEI) and a crosslinker, which may be a polyaziridine crosslinker. Also provided are two-layer constructions comprising the primer layer and a substrate layer; and tapes, such as flexographic plate mounting tapes, comprising the two-layer construction and a pressure sensitive adhesive layer.

The present invention concerns an inking system for a flexographic or a rotogravure press. The inking system uses a very small amount of ink (10) coupled with an ink source (6) made of two tanks (62) with two different inks. Thanks to feedback given by measuring the output directly on the printed support, the system mixes the ink in the optimal proportions to ensure an optimal printing quality at any time. It can compensate any effect due to environmental changes like the humidity or the temperature. This system, coupled with a seven colours press allows for the replacement of spot colours in most cases therby saving time and costs.

The invention relates to a method for operating a printing press for flexographic printing, in which a web (2) made of a substrate is unwound, conveyed and guided through at least two double printing units (10) of the printing press (1), each of the double printing units (10) comprising at least one counter pressure cylinder (20) and two impression cylinders (30) for flexographic printing. The back pressure rollers (20) are respectively driven by independent motors (50) to rotate; the impression cylinders (30) are respectively driven to rotate by independent motors (50); a computer (60) of the printing press (1) calculates at least two virtual drive shafts (61); a computer controls each of the motors (50) using one of the virtual drive shafts (61). The invention advantageously enables a flexographic printing machine to be operated in a high-productivity and flexible manner. The invention can be used, for example, for flexographic printing machines for processing webs for packaging printing in the industry.

A method for operating a printing machine for flexographic printing, wherein a web of printing stock is unwound, transported and thereby guided through at least two double printing units of the printing machine. Each of the double printing units has at least one impression cylinder and in each case two printing cylinders for flexographic printing. The impression cylinders are each driven in rotation by a separate motor and the printing cylinders are each driven in rotation by a separate motor. A computer of the printing machine calculates at least two virtual drive axes and the computer controls the motors in each case using one of the virtual drive axes. The method is particularly suitable for high-production and flexible processing in industrially operated, web-processing flexographic printing machines for packaging printing.

Sheet processing machine (01) with at least one sheet transport device (700), wherein the at least one sheet transport device (700) has a plurality of transport bodies (724) for sheet transport, wherein the plurality of transport bodies (724) are connected via a wheel train (732), wherein at least one transport drive (M700) is arranged to drive the plurality of transport bodies (724) via the wheel train (732), wherein at least one active compensation actuator (770) is arranged in a torque-transmitting manner in operative connection with the wheel train (732), characterized in that the at least one active compensation actuator (770) and the at least one transport drive (M700) are arranged to be coupled via at least one control unit (772) for control purposes.that the at least one sheet processing machine (01) has at least one sensor (780) for detecting the arrival of a sheet (02) and that the at least one sensor (780) is arranged to be coupled to the control unit (772) for control purposes.

This invention discloses an electrode tab bending resistance printing device, aiming to solve the problem of weak bending resistance of thin electrode tabs. The invention includes an unwinding roller wound with electrode tab material, a guide roller, and an impression roller assembly. The electrode tab material, drawn from the unwinding roller, passes through the guide roller and enters the impression roller assembly. The impression roller assembly includes an impression roller and an abutment roller. The impression roller is equipped with a printing punch, and the abutment roller is equipped with a printing groove corresponding to the printing mark. The electrode tab material passes between the impression roller and the abutment roller, and the impression roller assembly imprints at least two support ribs onto the electrode tab material. Through this arrangement, the bending resistance of the electrode tab material is enhanced while maintaining its thickness, thereby reducing the defect rate and the rate of sheet rejection.

A machine for checking flexographic printing plates, or offset plates, or plate assemblies, or printed surfaces, including a base, a support plane, associated with the base, for at least one printing plate, or offset plate, or plate assembly, or printed surface, the surface or physical characteristics of which are to be checked and controlled, a control unit, and a surface scanning unit of the at least one printing plate, or offset plate, or plate assembly, or printed surface to be checked. The scanning unit is operatively connected to the control unit, and is configured to acquire a real image of the at least one printing plate, or offset plate, or plate assembly, or printed surface to be checked.

The invention relates to a method for operating a flexographic printing machine having an impression cylinder (16, 105) or a flexographic impression cylinder and a counter-pressure cylinder (17, 106), which support a sleeve (3, 105a) having at least one flexographic stamp (5, 108), and the pressing pressure between the impression cylinder or the flexographic impression cylinder and the counter-pressing cylinder is adjusted through a motor. The setting is carried out automatically as a function of a dot density (303, 304) of the flexographic printing die, i.e. A location-dependent density of the printing protrusions of the flexographic printing die, or data derived therefrom by means of a computational technique. The invention advantageously allows cost-effective and high-quality printing in industrial flexographic printing. In addition, the method according to the invention allows further automated printing in an advantageous manner.

A security device is provided, including: a surface relief structure formed of one or more cured materials on a substantially flat substrate, the surface relief structure defining a primary set of relief elements at a first scale and a secondary set of relief elements at a second scale which is smaller than the first, the primary set of relief elements including a plurality of raised protrusions spaced by recesses and the secondary set of relief elements being disposed on the tops of at least one of the raised protrusions and / or in at least one of the recesses. A security device including a structure formed of cured material(s) and an embossed structure is also provided. Methods of manufacture are also disclosed.

SOLUTION: There is provided a method for operating a printing machine for flexographic printing, wherein a web 2 of a printed material is unwound, transported and thereby guided through at least two double printing units 10 of the printing machine 1. Each of the double printing units 10 has at least one impression cylinder 20 and in each case two printing cylinders 30 for flexographic printing. The impression cylinders 20 are each driven in rotation by a separate motor 50 and the printing cylinders 30 are each driven in rotation by a separate motor 50. A computer 60 of the printing machine 1 calculates at least two virtual drive axes 61 and the computer controls the motors in each case using one of the virtual drive axes 61.EFFECT: The invention makes it possible to operate a flexographic printing machine in a highly productive and flexible manner. The invention is particularly suitable, for example, in industrially operated, web-processing flexographic printing machines for packaging printing.SELECTED DRAWING: Figure 1