Patent ID: 6042223
Filing Date: 2000-03-28
Classification: B41J

Abstract:
An ink jet type recording head comprising:a plurality of pressure generating units, each of the pressure generating units comprising:a pressure generating means; anda plurality of pressure generating chambers for pressurizing ink through actuation of the pressure generating means; anda passage unit on which the pressure generating units are arranged, the passage unit having reservoirs formed therein, at least one reservoir extending so as to cross over a plurality of pressure generating units; wherein:the pressure generating chambers of each pressure generating unit are arranged in lines extending along an arrangement direction;the pressure generating chambers are inclined at an angle .theta. with respect to the arrangement direction;side walls of the pressure generating units in the arrangement direction are inclined at an angle .theta. with respect to the arrangement direction, thereby providing an inclination for each of the pressure generating units;the pressure generating units are arranged on the passage unit such that each of the pressure generating units is shifted in a recording head moving direction along the inclination of an adjacent one of the pressure generating units away from a position aligned with the adjacent pressure generating unit; andan amount of shift between each pressure generating unit and an adjacent pressure generating unit is set such that a pitch between first opposing ones of the pressure generating chambers that oppose each other across the side walls of the pressure generating unit and the adjacent pressure generating unit is equal to a pitch between second opposing ones of the pressure generating chambers that oppose each other on the pressure generating unit.