Patent ID: 7934814
Filing Date: 2011-05-03
Classification: B41J,Y10T

Abstract:
1. A droplet ejection head comprising a layered body made up of a plurality of metal plates in which at least a part of a liquid passage is formed, and an ejection face in which an ejection port provided at one end of the liquid passage and ejecting a droplet is formed, wherein: the plurality of metal plates in the layered body include n metal plates (n represents an arbitrary natural number equal to or greater than 2) whose lengthwise directions form the same angle with a rolling direction thereof; and the n metal plates include a first stress plate which is a metal plate having internal stress which forces the metal plate to bend along its lengthwise direction so as to make the metal plate protrude toward a direction in which a droplet is ejected from the ejection port, and a second stress plate which is a metal plate having internal stress which forces the metal plate to bend along its lengthwise direction so as to make the metal plate protrude toward a direction opposite to the direction in which a droplet is ejected from the ejection port.