Patent ID: 7883186
Filing Date: 2011-02-08
Classification: B41J,Y10T

Abstract:
1. A liquid ejection head, comprising: a plurality of head units each of which includes a plurality of nozzles, a plurality of pressure chambers connected respectively to the plurality of nozzles, liquid supply ports for supplying liquid respectively to the plurality of pressure chambers, and a plurality of actuators causing the liquid to be ejected respectively from the plurality of nozzles; a single common liquid chamber plate formed with a common liquid chamber which supplies the liquid to the plurality of pressure chambers of the plurality of head units; a porous substrate which has permeable properties and is disposed below the single common liquid chamber plate so as to constitute a lower surface plate of the common liquid chamber; and a photosensitive film which is made of a material having photosensitivity and non-permeable properties, has through holes which correspond to an arrangement pattern of the liquid supply ports of the head units, and is attached to a lower surface of the porous substrate, wherein: the plurality of head units are arranged in a planar configuration; the plurality of head units are covered with the single common liquid chamber plate; the common liquid chamber is provided in common to the plurality of head units; and the plurality of head units are bonded to the porous substrate via the photosensitive film.