A method for manufacturing an orifice plate for use of a...

B - Operations – Transporting – 41 – J

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B41J 2/14 (2006.01) B41J 2/16 (2006.01) C25D 7/00 (2006.01)

Patent

CA 2242819

A method for manufacturing an orifice plate used for a liquid discharge provided with discharge port for discharging liquid comprises the steps of preparing a non-conductive plate having recessed portion formed on the circumference of the flat portion corresponding to the discharge port, forming a first conductive material peelable from the non-conductive plate only in the recessed portion of the non-conductive plate, forming a plate member by plating the first conductive material with a second conductive material by electroforming method after the formation of the first conductive material, and obtaining the orifice plate having the discharge port by peeling off the plate member from the non-conductive plate. With the method thus arranged, it is possible to materialize the same precision as in the glass mask used for photolithography, and make the variation of orifice areas smaller for the formation of highly densified orifices.

Cette invention concerne une méthode de fabrication d'une plaque à orifices pour tête d'imprimante comportant une lumière de décharge. Elle comprend les étapes suivantes : préparation d'une plaque non conductrice comportant une partie en creux sur le pourtour de la partie plate correspondant à la lumière de décharge, formation d'une première couche de matériau conducteur pelable de la plaque non conductrice uniquement dans la partie en creux de celle-ci, formation d'une plaque conductrice par électrodéposition d'un second matériau conducteur sur le premier matériau conducteur et réalisation de la plaque à orifices par pelage de la plaque conductrice de la plaque non conductrice. Selon la méthode préconisée, on peut réaliser la même précision d'usinage qu'avec le masque de verre utilisé en photolithographie et réduire les variations de section d'ouverture pour l'obtention d'une tête d'imprimante à haute densité d'orifices.

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