Patent ID: 8167419
Filing Date: 2012-05-01
Classification: B41J

Abstract:
1. An ink jet recording head comprising: a plurality of ink jet head substrates, each including ejection outlets for ejecting ink and energy generating elements for generating energy for ejecting the ink; a supporting substrate for supporting said plurality of ink jet head substrates; an ink accommodating portion, provided at a surface opposite from a surface of the supporting substrate which supports said plurality of ink jet head substrates, for accommodating the ink; a plurality of filters provided in said ink accommodating portion so as to be inclined with respect to a gravitational direction when said ink jet recording head is used; and a plurality of suction openings through which the ink in regions between each of said filters and said supporting substrate is capable of being sucked via said filters, said suction openings being provided at the most elevated position of a surface of each of said filters; and a bubble removing pipe, provided in said ink accommodating portion, for communicating with each of said plurality of suction openings.