In a screen printing apparatus including: an impression cylinder that receives a sheet from a transfer cylinder located upstream in the sheet transport direction through a sheet gripping device and transports the sheet held in the sheet gripping device; and a rotary screen cylinder that is in contact with the impression cylinder and performs screen printing for the sheet held by the impression cylinder, the transfer cylinder is located above the impression cylinder, and the rotary screen cylinder is located to the side of the impression cylinder so that ink, varnish, or the like accumulates in a squeegee portion including a squeegee shaft, a squeegee, and the like in the rotary screen cylinder.

A rotary screen printing press includes: a screen plate; a squeegee; squeegee supporting means for supporting the squeegee; and a worm and a worm wheel. The squeegee supporting means includes: a supporting plate swingably supported and supporting the worm and the worm wheel; an eccentric sleeve configured to adjust the position of the center of swinging movement of the supporting plate; and a contact surface and a screw configured to limit the direction of the movement of the supporting plate. The eccentric sleeve and the contact surface and screw cooperate with each other to move the tip of the squeegee along the tangent line of an impression cylinder at a position at which the screen plate and the squeegee contact each other.

Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate. In the region of the outer circumference of the cylinder, magnetic elements are arranged in n rows extending axially and in m columns extending circumferentially. At least two magnetic elements are provided one behind the other in the same column, mounted as a group at a shared carrier element and can be varied with respect to their axial position at the cylinder, collectively and independently of the magnetic elements of an adjoining column. The at least two magnetic elements of the same column are arranged at respective magnetic element carriers that can be positioned at the shared carrier element independently of one another in the circumferential direction and/or can be detached from the carrier element and/or are adjustable in the axial direction within an adjustment range.

Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate in a region of an outer circumference of the cylinder in a matrix-like manner. A number of nm magnetic elements (where n, m are integers>1) that provide magnetic fields are arranged in n rows extending in an axially parallel manner and in m columns extending in a circumferential direction. At least two magnetic elements are provided one behind the other in the same column, disposed at magnetic element carriers that differ from one another, and can be positioned on the cylinder in the circumferential direction independently of one another. The at least two magnetic elements are mounted so as to be adjustable relative to the magnetic element carrier carrying the magnetic element in the circumferential direction within an adjustment range.

Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate. In the region of the outer circumference of the cylinder, in a matrix-like manner, a number of magnetic elements that provide magnetic fields are arranged in n rows extending in an axially parallel manner and in m columns extending in the circumferential direction. Additionally, suction elements with suction openings pointing outwards are also arranged in the circumferential region. A plurality or all of the magnetic elements are arranged one behind the other and are each combined with at least one assigned suction element in respective modular units as action units in a plurality or all of the columns of magnetic elements. The action units can be positioned in each case independently of the other action units in the circumferential direction and/or can be detached from the cylinder.

A multi-optical-color optically-variable printing device having: a conveying unit; a screen printing unit, configured to printing an ink or a varnish containing a magnetic substance on a printing stock; and a plurality of optical-color optically-variable pattern forming units. Each optical-color optically-variable pattern forming unit comprises: magnetizing rollers, magnetic orientation components being arranged on each magnetizing roller and configured to performing magnetic orientation on the printing stock; and pre-drying and curing devices, configured to pre-drying and curing the printing stock, each pre-drying and curing device comprising optical mask curing devices, the optical mask curing device being fixedly arranged and configured to projecting dynamically refreshable variable optical field image-text, and the variable optical field image-text and the printing stock synchronously moving a predetermined distance.

The present invention relates to a radiation curable screen printing composition for cast-curing comprising one or more compounds comprising radiation curable groups, one or more photoinitiators and one or more rheology modifying agents, which composition has a specific shear rate dependent viscosity; an article comprising a substrate and a coating comprising the radiation curable composition in cured form, wherein the coating is in form of a surface relief structure, a method for producing the article comprising the steps: (i) Providing a casting tool having a relief structure defined in a surface thereof, the relief structure corresponding to the surface relief structure; (ii) Applying to the substrate and/or the relief structure of the casting tool the radiation curable composition; (iii) Cast curing the radiation curable composition by bringing the substrate into contact with a casting tool comprising a relief structure and forming the surface relief structure in the coating composition; and (iv) Radiation curing the coating composition such that the surface relief structure formed of the radiation curable composition is retained on the substrate; a security article comprising at least one inventive substrate; the use of the inventive radiation curable composition for the preparation of a surface relief structure on a substrate; the use of the radiation curable composition for screen printing, preferably rotary screen printing, and preferably subsequent cast curing; and a printing press comprising the radiation curable composition, wherein the printing press is adapted to carry out printing on a web-like or sheet-like substrate, in particular for the production of security articles such as banknotes, comprising a printing unit, preferably a screen-printing unit, the printing press further comprises an in-line casting device comprising a casting tool, wherein the printing unit is designed to apply the radiation curable composition to the substrate and/or the casting tool and the inline-casting device is adapted to replicate and form a surface relief structure in the radiation curable composition.