A micro-optical inspection arrangement comprises micro-focusing elements which are composite bodies consisting of a main part and an additional part and which have a reference focal length. The main parts are provided as micro-focusing element preforms, and the additional parts are formed from one or more functional coatings. The invention also relates to a method for producing such a micro-optical inspection arrangement and to a micro-optical displaying arrangement comprising the micro-optical inspection arrangement according to the invention and a microstructure arrangement, in particular a moir magnification arrangement and a modulo magnification arrangement. The invention also relates to security elements and data carriers that have the micro-optical inspection arrangement according to the invention.

Building panels, especially floor panels, and a method of forming embossed in register surfaces with a digital ink head that applies a curable ink on the panel surface or on an upper side of a foil as a coating and forms an ink matrix that is used to create a cavity in the surface by applying a pressure on the ink matrix.

Building panels, especially floor panels, and a method of forming embossed in register surfaces with a digital ink head that applies a curable ink on the panel surface or on an upper side of a foil as a coating and forms an ink matrix that is used to create a cavity in the surface by applying a pressure on the ink matrix.

A method of forming a digital embossing (17) on a surface (2) by bonding hard press particles (67) to a carrier (68). A liquid binder pattern (P) is applied on the carrier by a digital drop application head. Hard press particles (67) are applied on the carrier (68) and the binder pattern such that some hard press particles are bonded to the carrier (68) by the liquid pattern and non-bonded press particles (67) are removed. The carrier (68) with the bonded hard press particles (67) is pressed to the surface (2) and an embossing is formed when the carrier (68) with the hard press particles (67) is removed.

A moir magnification device for authenticating security articles, the moir magnification device comprising: an array of micro focusing elements; and an array of micro images; wherein the array of micro focusing elements and the array of micro images are correspondingly aperiodic such that the micro focusing elements generate moir magnifications of the micro image when viewing the device at predetermined viewing angles. A device such as this raises the complexity and difficulty of the task facing would-be counterfeiters. The use of an aperiodic micro focusing element array and micro image array is not immediately apparent, as the moir magnifications observed by the viewer appear the same as that of a regular device with periodic arrays. In this way, the aperiodic aspect of the design remains covert until the moir device is more closely and deliberately analysed.

A moir magnification device for authenticating security articles, the moir magnification device comprising: an array of micro focusing elements; and an array of micro images; wherein the array of micro focusing elements and the array of micro images are correspondingly aperiodic such that the micro focusing elements generate moir magnifications of the micro image when viewing the device at predetermined viewing angles. A device such as this raises the complexity and difficulty of the task facing would-be counterfeiters. The use of an aperiodic micro focusing element array and micro image array is not immediately apparent, as the moir magnifications observed by the viewer appear the same as that of a regular device with periodic arrays. In this way, the aperiodic aspect of the design remains covert until the moir device is more closely and deliberately analysed.

A method of self-adaption adjustment for post-printing treatment including steps of S1: printing a plurality of identifiers on a paper sheet for positioning actual locations of treatment on the paper sheet; S2: detecting the identifiers on the paper sheet, and locating the actual locations to be treated according to the locations of the identifiers and/or relative locations among the identifiers; and S3: adjusting locations of treatment from a post-printing treatment mechanism to the paper sheet according to the actual locations output in step S2. A system of self-adaption adjustment for post-printing treatment including a printing module, a detection module, a treatment module, a driving module and a post-printing treatment mechanism. The method and system realize the self-adaption adjustment, which effectively solves the problems that an actual value after skewing or stretching or shrinking the actual printing content is inconsistent with a theoretical value of typesetting, thus effectively improving the production efficiency and production quality, which has favorable economic and social benefits. The method and system can be widely applied in various post-printing treatment systems.

A method for providing a roller assembly for producing a decorative pattern on a wood material surface, wherein the roller assembly comprises at least one decorative paint roller and at least one structured lacquer application or embossing roller, and the structured lacquer application or embossing roller and the decorative paint roller are matched to create a structured decorative pattern, includes the steps of applying first the decorative paint roller and then the structured lacquer application roller on the wood material surface. The method uses at least two different decorative paint rollers for creating two different decorative patterns are matched with a structured lacquer application or embossing roller.

The present invention relates to a method for forming a surface relief microstructure, especially an optically variable image (an optically variable device) on a transparent or translucent substrate and a product obtainable using the method. A further aspect of the invention is the use for the prevention of counterfeit or reproduction of a document of value and a method of forming a coating showing an angle dependent color change.

Apparatus for manufacturing a two-sided product with an integrated device on a web of material, including: a first rotary micro scale structure formation unit for having a first structure for forming a first microscale structure on one side of a portion of web; a second rotary microscale structure formation unit having a second structure for forming a second micro scale structure on second side of the portion of the web; the first and second micro scale structures and the portion of the web between the first and second microscale structures together forming the integrated device; and a web feed system for feeding the web of material between the first and second rotary microscale structure formation units.