Ink jet printhead and nozzle plate for use therewith

B - Operations – Transporting – 41 – J

Patent

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Details

B41J 2/045 (2006.01)

Patent

CA 2203783

An ink jet printhead of the present invention includes a plurality of printhead elements (1) each having a plurality of ink injecting holes (10), a flat flexible cord (2) electrically connected to the respective printhead elements (1), and ink distributing member (5) to supply the respective printhead elements (1) with ink. Each printhead element (1) has a head element body (11) made of a resin material, and the head element body (11) has a front wall portion (1a) in which the plurality of ink injecting holes (11) are formed. The head element body has side surfaces (11a) formed with a plurality of dented groove-shaped ink passageways communicating with the respective ink injecting holes (10), and each side surface supports a diaphragm (12) carrying a plurality of piezoelectric elements (13) corresponding to the respective ink passageways. The flexible cord (2) is inserted between neighboring printhead elements (1) and provided with a conductive wiring pattern (22) having output terminals (25) electrically connected to the piezoelectric elements (13) of the respective printhead elements (1).

Une tête d'impression d'une imprimante à jet d'encre comprend une pluralité d'éléments (1) de tête d'impression, dont chacun comporte une pluralité d'orifices (10) de sortie d'encre, un câble souple et plat (2) électriquement connecté aux éléments respectifs (1), et un distributeur d'encre (5) permettant d'alimenter en encre les éléments (1) respectifs de la tête. Chacun desdits éléments (1) comprend un corps (11) en résine pourvu, au niveau de sa partie paroi avant (1a), de ladite pluralité d'orifices (10) de sortie d'encre. En outre, les deux surfaces latérales (11a) des corps d'éléments (11) respectifs sont pourvues d'une pluralité de passage d'écoulement d'encre communiquant avec les orifices (10) de sortie respectifs, et auxquels sont réunies des membranes (12) qui comprennent une pluralité de dispositifs piézo-électriques (13) correspondant aux passages d'écoulement. Le câble souple (2) est intercalé entre les éléments (1) de tête d'impression adjacents et est pourvu d'un motif de câblage conducteur (22) qui comporte des bornes de sortie (25) en contact conducteur avec les dispositifs piézo-électriques (13) des éléments (1) respectifs de la tête.

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