Patent ID: 7841085
Filing Date: 2010-11-30
Classification: B41J,Y10T

Abstract:
1. A method for manufacturing a liquid jet head including a flow channel board having at least pressure-generating chambers therein communicating with nozzle holes and a pressure generator above one surface thereof that applies pressure for jetting liquid to the pressure-generating chambers, and a silicon single-crystal reservoir board having at least a reservoir section that communicates with the pressure-generating chambers and that is defined by a through hole passing through and a step with a riser formed so as to open up the through hole at one surface thereof, the method comprising: forming a mask pattern having an opening on a reservoir-forming board intended for the reservoir board, the opening having a correction pattern on a wall thereof and a dummy mask pattern therein, the correction pattern serving to expose a predetermined crystal plane of the reservoir-forming board to define the riser of the step, the dummy mask pattern having a plurality of separate mask portions and serving to substantially match the etching rate of the reservoir-forming board in the region opposing the correction pattern with the etching rate of the reservoir-forming board in the region opposing the opening of the mask pattern; and anisotropically etching the reservoir-forming board through the mask pattern having the correction pattern and the dummy mask pattern, thereby forming the reservoir section having the step.