Patent ID: 6097411
Filing Date: 2000-08-01
Classification: B41J

Abstract:
An ink jet head comprising:an ejection outlet member having a plurality of ejection outlets;a plurality of energy generating elements for generating energy to be used for ejecting ink through said ejection outlets;a plurality of ink pathways each communicated with each of said ejection outlets;a liquid chamber communicated with said plurality of ink pathways;a support member provided with said energy generating elements;a grooved top plate having a plurality of grooves which define respective said ink pathways, each of said grooves having an axis of ink flow and a recess which defines said liquid chamber and the ejection outlet member provided with said ejection outlets; anda pressing means for press-contacting said support member and said grooved top plate, wherein said grooved top plate has a surface having said grooves on a side where the grooved top plate is contacted with said support member, said ejection outlet member has a jaw portion contacting a face of said support member on which said energy generating elements are provided while said jaw portion having a protruded portion which is protruded above said surface of said grooved top plate, said protruded portion being extended in a direction of crossing said axis of ink flow, and being contacted with said support member.