| 摘要 |
An ink jet head including: a plate member having left and right sides opposite each other, a front end and a rear end opposite each other, and a length from its front end to its rear end; two substrates each having a front end and a rear end opposite each other and a length from its front end to its rear end shorter than the length of the plate member, each substrate being attached to one of the left and right sides of the plate member so that the substrates sandwich the plate member therebetween and the rear end of the plate member protrudes beyond the rear ends of the substrates, each substrate being formed with a channel group including a plurality of ink-ejection channels extending from its front end to its rear end; and a manifold portion attached to the rear ends of the substrates and to left and right sides of the protruding rear end of the plate member and formed with two ink-supply channels each in fluid connection with the ink-ejection channels of a corresponding one of the channel groups.
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