Patent ID: 6435670
Filing Date: 2002-08-20
Classification: B41J

Abstract:
A liquid discharge head, having a plurality of discharge ports to discharge a liquid,a plurality of liquid flow paths, in which an end part permanently communicates with said respective discharge ports, having a bubble generating area to generate a bubble in the liquid, bubble generating means to generate energy to generate and grow the bubble, a plurality of liquid supply ports arranged in said plurality of liquid flow paths and communicating with a common liquid supply chamber, and a movable member, having a free end, supported with a very small gap by at least part of said liquid flow path side of said liquid supply port, the area surrounded by at least an edge of the free end of said movable member and both sides of said movable member being larger than an opening area prepared in the liquid flow path of said liquid supply port, wherein, in a status of said movable member at rest, the part of said discharge port side of said movable member contacts with a member for forming said liquid supply port and a very small gap is placed between the part of a fulcrum side of said movable member and said liquid supply port.