A method for manufacturing an optically variable security element, so that for a viewer of the security element, a first color impression is created through the combination of at least the color effects of a first embossing lacquer layer and the coating, and a second, different color impression is created through the combination of the color effects of at least the first embossing lacquer layer, a second embossing lacquer layer and a coating.

A method for manufacturing an optically variable security element, so that for a viewer of the security element, a first color impression is created through the combination of at least the color effects of a first embossing lacquer layer and the coating, and a second, different color impression is created through the combination of the color effects of at least the first embossing lacquer layer, a second embossing lacquer layer and a coating.

A display includes first and second portions and is deformable between a first state in which the portions are spaced apart from each other and a second state in which the portions overlap each other, wherein the first portion includes first and second regions each having a shape extending in a first direction and alternately and regularly arranged in a second direction, each of the first regions being a light-permeable region provided with a light-deflecting structure, and each of the second regions being a transparent region having flat front and back surfaces, and a latent image is recorded in the second portion, the latent image being identifiable or easy to identify when observed through the first portion in the second state.

A lens pigment suitable for manufacturing value documents by printing technology, includes a carrier substrate which forms a lens base and which is supplied on its front side with a first plastic having at least one elevation that produces a microlens and with a second plastic leveling the first plastic.

A lens pigment suitable for manufacturing value documents by printing technology, includes a carrier substrate which forms a lens base and which is supplied on its front side with a first plastic having at least one elevation that produces a microlens and with a second plastic leveling the first plastic.

A sheet, including a substrate having a surface, wherein the surface includes a first marking that defines a boundary of a hollow flake, and a second marking that defines a boundary of a solid flake; wherein the first marking and the second marking are each, independently, configured to protrude from a plane of the surface or depress down from the plane of the surface; and wherein the first marking surrounds the second marking is disclosed. A complementary set of flakes, and a method of making the complementary set of flakes are also disclosed.

The invention relates to a data carrier comprising a storage layer forming a plurality of first surface elements (6). The storage layer (2) has at least one optical characteristic, which is optically anisotropic and which varies spatially between the first surface elements (6). A cover layer (3) over the storage layer (2) forms a plurality of second surface elements (10), each acting as a polarisation filter for a predetermined polarisation direction. The predetermined polarisation direction varies between the second surface elements (10). The storage layer can contain in particular bacteriorhodop sin in the form of a purple membrane. The invention also relates to a method for the production and reading of a data carrier of this type.

The invention relates to a data carrier comprising a storage layer forming a plurality of first surface elements (6). The storage layer (2) has at least one optical characteristic, which is optically anisotropic and which varies spatially between the first surface elements (6). A cover layer (3) over the storage layer (2) forms a plurality of second surface elements (10), each acting as a polarisation filter for a predetermined polarisation direction. The predetermined polarisation direction varies between the second surface elements (10). The storage layer can contain in particular bacteriorhodop sin in the form of a purple membrane. The invention also relates to a method for the production and reading of a data carrier of this type.

The flat foil printing press comprises an evacuable back-pressure plate (9), with suction regions (15k) which run in the sheet running direction (X) and which are next to embossing regions (16k), in which foil webs (6k) run. The suction regions are subdivided into several suction segments (10i) which are successive in the sheet running direction, and are each connected to a vacuum source (14) by way of a vacuum feed line (12i) via a vacuum switching element (13i). With the running-out of an embossed sheet (5), firstly all suction segments (10i) covered by the sheet are evacuated, and subsequently the suction segments which are no longer covered by the sheet are successively disconnected from the vacuum source. This results in an error-free separation of foil webs and sheets, for a greater picture quality and machine output.

The flat foil printing press comprises an evacuable back-pressure plate (9), with suction regions (15k) which run in the sheet running direction (X) and which are next to embossing regions (16k), in which foil webs (6k) run. The suction regions are subdivided into several suction segments (10i) which are successive in the sheet running direction, and are each connected to a vacuum source (14) by way of a vacuum feed line (12i) via a vacuum switching element (13i). With the running-out of an embossed sheet (5), firstly all suction segments (10i) covered by the sheet are evacuated, and subsequently the suction segments which are no longer covered by the sheet are successively disconnected from the vacuum source. This results in an error-free separation of foil webs and sheets, for a greater picture quality and machine output.