Patent ID: 6652079
Filing Date: 2003-11-25
Classification: B41J

Abstract:
An ink jet recording head, comprising:a plurality of ink discharge ports for discharging ink; a plurality of electrothermal converting elements that are provided to be associated with each of said ink discharge ports, respectively, for bubbling and discharging the ink; a plurality of pressure chambers for containing said electrothermal converting elements and providing spaces for heating and bubbling said ink; a common liquid chamber for supplying ink to said plurality of pressure chambers; and a plurality of ink flow paths for respectively communicating said pressure chambers with said common liquid chamber, wherein said ink flow paths are arranged such that central lines of said ink flow paths in a direction of ink supply to said pressure chambers at boundary portions between said ink flow paths and said pressure chambers are positioned offset from central lines of said electrothermal converting elements extending in the same direction, and wherein the centers of said ink discharge ports are arranged to be positioned offset from the centers of said electrothermal converting elements.