Patent ID: 6113223
Filing Date: 2000-09-05
Classification: B41J

Abstract:
An ink jet recording head for recording on a recording medium using an ink, comprising:a plurality of liquid passages terminating in respective ejection outlets, at respective longitudinal ends of said liquid passages, for ejection of the ink and each having an ejection energy generating means for generating ejection energy provided on a substrate, said liquid passages being approximately parallel to one another and being disposed in a plane;a liquid chamber in fluid communication with said plurality of liquid passages, said liquid chamber containing the ink to be supplied to said liquid passages;an inlet for supplying the ink to said liquid chamber, wherein said ejection outlets, said liquid passage and said liquid chamber are arranged in this order from one end of said ink jet recording head, and said liquid chamber having a first slanted inner surface extending from said inlet to said liquid passages, a second slanted inner surface and a third slanted inner surface extending from said inlet laterally with respect to a direction in which said passages extend and continuously from said first slanted surface, said first, said second and said third slanted surfaces being inclined relative to a plane of said substrate, and having a region, disposed between said liquid passages and said first slanted portion, for suppressing movement of the bubble towardsaid liquid passages.