Printing machine
AssigneeKba-Notasys SA
InventorMatthias Gygi
Life of this patent
Estimating the term…
Abstract
The printing machine comprises at least one transfer system (5) for conveying a substrate (1) onto an impression cylinder (6) and at least one screen (7, 8) of cylindrical or flat shape, with a doctor blade, said screen collaborating with the impression cylinder (6) and intended to print the substrate with an ink containing pigments that can be orientated by a magnetic field and an unloading system (9) for carrying the substrate (1) away. The impression cylinder comprises at least one magnetic element on its impression surface, said magnetic element being positioned at a point corresponding to said impression performed by said screen (7, 8) on said substrate.
Claims26
A printing machine for printing a substrate in the form of a sheet or continuous web, said substrate being intended to receive at least one impression, comprising at least one transfer system for conveying the substrate onto an impression cylinder, at least one screen of cylindrical or flat shape equipped with a doctor blade, the screen collaborating with the impression cylinder and intended to print the substrate by screen-printing with an ink containing pigments that can be orientated by a magnetic field and an unloading system for carrying the substrate away after the printing operation, wherein said impression cylinder comprises at least one magnetic element on its printing surface, said magnetic element being placed at a location corresponding to said impression on said substrate performed by said screen.
A printing machine for printing a substrate in the form of a sheet or continuous web, said substrate being intended to receive at least one impression, comprising at least one transfer system for conveying the substrate onto an impression cylinder, at least one screen of cylindrical or flat shape equipped with a doctor blade, the screen collaborating with the impression cylinder and intended to print the substrate by screen-printing with an ink containing pigments that can be orientated by a magnetic field and an unloading system for carrying the substrate away after the printing operation, wherein the unloading system comprises a cylinder having at least one magnetic element on its surface, said magnetic element being placed at a location corresponding to said impression on said substrate performed by said screen.
A cylinder for printing or transferring a substrate in the form of a sheet or continuous web, said substrate being intended to receive at least one screen-printed impression with an ink containing pigments that can be orientated by a magnetic field, which cylinder comprises at least one magnetic element on its surface to orientate the pigments of said ink, and wherein said at least one magnetic element is covered by a sheet of non-magnetic material.
(canceled)
A method of screen-printing a substrate in the form of a sheet or web, in which an impression is formed using an ink containing magnetic pigments, said impression being formed by passing said substrate in contact with an impression cylinder with which there collaborates at least one screen of cylindrical or flat shape equipped with a doctor blade for screen-printing said ink, wherein said impression is subjected to a magnetic field before it dries so as to orientate said pigments.
(canceled)
Dependencies are inferred from the claim text.