Method and arrangement for inking up an applicator element...

G - Physics – 03 – G

Patent

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G03G 15/09 (2006.01)

Patent

CA 2566360

The invention relates to a method and arrangement for inking up an applicator element (14) of an electrophotographic printer or copier. A two-component mixture, which is comprised of electrically charged toner particles and of ferromagnetic particles and which adheres to the outer surface of a roller (16), is moved past a surface of an applicator element (14) to be inked up. When the two-component mixture is moved past, at least a portion of the toner particles contained in the two-component mixture is transferred to the surface of the applicator element (14) to be inked up. An electrical field is generated that acts at least upon the portion of the two-component mixture located between the surface of the roller (16) and the surface of the applicator element (14) to be inked up. The strength of the electrical field can be controlled with the aid of a control unit so that the transferred toner particles produce a preset layer thickness on the surface to be inked up.

L'invention concerne un procédé et un dispositif permettant d'encrer un élément applicateur (14) d'imprimante ou de photocopieuse électrophotographique. Un mélange à deux composants, qui adhère à la surface extérieure d'un cylindre (16) et comprend des particules de toner à charge électrique et des particules ferromagnétiques, est passé devant la surface à encrer d'un élément applicateur (14). Lors du passage du mélange à deux composants, au moins une partie des particules de toner contenues dans le mélange à deux composants est transférée sur la surface à encrer de l'élément applicateur (14). Il est produit un champ électrique qui agit sur au moins une partie du mélange à deux composants, qui se trouve entre la surface du cylindre (16) et la surface à encrer de l'élément applicateur (14). L'intensité du champ électrique peut être régulée à l'aide d'une unité de commande, de sorte que les particules de toner transférées donnent lieu à une épaisseur de couche préajustée sur la surface à encrer.

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