A paint composition includes a fluid and a coloring agent in the fluid. The fluid maintains the coloring agent in a first protonation state. The coloring agent exhibits a first color characteristic in the first protonation state. The paint composition includes microcapsules in the fluid. The paint composition also includes a chemical compound in the microcapsules. Rupture of at least a portion of the microcapsules is configured to release the chemical compound and expose the coloring agent to the chemical compound. Exposure of the coloring agent to the chemical compound changes the coloring agent from the first protonation state with the first color characteristic to a second protonation state with a second color characteristic. The second color characteristic is visually distinct from the first color characteristic.

A multilayer coating that provides a switchable color includes a substrate, an electrically conductive heating paint layer disposed over the substrate, a non-electrically conductive paint layer disposed over the electrically conductive heating paint layer, and a thermochromic paint layer disposed over the non-electrically conductive paint layer. The non-electrically conductive paint layer has a base color at 25 C. The thermochromic paint layer has a first preset color at 25 C. and a second preset color at a switching temperature that is higher than 25 C. Characteristically, the first preset color is matched to the base color. A controllable voltage source is in communication with the electrically conductive heating paint layer to switch between a first preset color and a second preset color.

A coating apparatus for manufacturing a color filter substrate, comprising a roller and a resin-pressing device, the roller is provided with a plurality of openings on its external surface, the openings have a shape identical to a shape of color pixel units of the substrate to be coated, the roller is further provided with a cavity communicating with the openings, the cavity is configured for housing resin; the resin-pressing device is configured for forcing the resin within the cavity out through the openings. Also disclosed is a process for manufacturing a color filter substrate, comprising: providing a substrate, on which a predetermined area forming patterns for color filter units is provided; and coating the predetermined area of the substrate with the coating apparatus to form the patterns for color filter units.

Thermochromic coatings are improved by mixing thermochromic capsules with polymer resins in a manner that imparts shelf stability to flowable precursors that may be cured quickly using dodecylbenzenesulfonic acid and/or other acid catalysts to form relatively hard coatings that are capable of withstanding machine operations, such as the operations needed to make beverage can lids, bottle caps, pull tabs and the like.

Disclosure relates to the field of graphical elements and is directed to a device for producing an optical effect layer (OEL). Disclosure provides an optical effect that is easy to detect as such and exhibits a viewing-angle dependent apparent motion of image features over an extended length if the viewing angle with respect to the OEL changes. OEL includes a binder material being at least partially transparent and a plurality of particles dispersed within the layer. Each particle has a non-isotropic reflectivity and may be magnetic or magnetizable. Orientation of the particles forms an orientation pattern extending over a length within an extended surface of the OEL, such that the local average of an angle between (i) a straight line along an observed longest dimension within the corresponding cross-section shape, and (ii) said first direction x varies according to a function () of a position (P) along said first direction.

An optically variable device may be manufactured by aligning magnetic flakes on a surface of an adhesive layer by applying the flakes onto the adhesive layer surface in presence of a magnetic field, and curing the adhesive layer having magnetic flakes adhered to the adhesive layer. When cured, the adhesive layer holds the magnetic flakes oriented, enabling subsequent encapsulation of the oriented magnetic flakes in a coating layer on the adhesive layer, without a substantial loss of orientation of the magnetic flakes.

A method for applying a layer of a second color according to a predetermined pattern, on at least one face of a metal substrate, which is entirely painted with a first color comprising applying a primer according to a predetermined pattern onto at least one face of a metal substrate, applying thereto a UV curable powder coating comprising a second color that is different from the first color, removing excess of UV curable powder coating such that the UV curable powder coating remains only at a location on the metal substrate determined by the primer, activating IR and UV energy in order to cure the UV curable powder coating, and forming a metal substrate decorated with at least two colors according to the predetermined pattern on at least one face of the metal substrate, and a system for performing the same.

A deposition device may deposit, on a substrate, a binder layer that includes a first set of magnetic flakes and a second set of magnetic flakes and may cause, when a temperature of the binder layer satisfies a temperature threshold (e.g., a Curie temperature of the first set of magnetic flakes), a magnetic field to be applied to the binder layer to cause the first set of magnetic flakes and the second set of magnetic flakes to be oriented according to the magnetic field. The deposition device may cause, when the temperature of the binder layer ceases to satisfy the temperature threshold, another magnetic field to be applied to the binder layer to cause only the second set of magnetic flakes to be oriented according to the other magnetic field.

The disclosure relates to the field of graphical elements and is directed to an optical effect layer (OEL), a device and a method for producing same. The disclosure provides an optical effect that is easy to detect as such and exhibits a viewing-angle dependent apparent motion of image features over an extended length if the viewing angle with respect to the OEL changes. An OEL includes a binder material being at least partially transparent and a plurality of particles dispersed within the layer. Each particle has a non-isotropic reflectivity and may be magnetic or magnetizable. The orientation of the particles forms an orientation pattern extending over a length within an extended surface of the OEL, such that the local average of an angle between (i) a straight line along an observed longest dimension within the corresponding cross-section shape, and (ii) said first direction x varies according to a function () of a position (P) along said first direction.

The present invention relates to the field of the protection of value documents and value commercial goods. In particular, the invention relates to printing devices and processes for producing optical effect layers (OEL) comprising magnetically oriented magnetic or magnetizable pigment particles. In particular, the present invention provides processes for producing said OELs as anti-counterfeit means on security documents or security articles or for decorative purposes. The printing devices comprise a) an orienting device comprising an orientation means, said orientation means being either a magnetic field generating belt or a non-magnetic belt comprising magnetic field generating elements, said belt being driven by at least two rollers, and b) a hardening unit.