Patent ID: 6260272
Filing Date: 2001-07-17
Classification: B41J,Y10T

Abstract:
A method of manufacturing a nozzle plate to be used in an inkjet printer head and having a nozzle passage therethrough, a straight conduit portion being formed at one end portion of the nozzle passage located near an ink ejection surface of the nozzle plate and extending straight to an opening of the nozzle passage located on the ink ejection surface in order to eject an ink straight,the method comprising the processes of:forming a member having the ink ejection surface and the nozzle passage including the straight conduit portion;forming a recess on the ink ejection surface of the member such that an area of an opening of the recess is greater than an area of the opening of the nozzle passage and such that a depth of the recess is greater than a predetermined thickness;grinding the ink ejection surface by the predetermined thickness on the basis of the depth of the recess remaining on the ink ejection surface after grinding; andforming a second recess on the ink ejection surface of the member such that an area of an opening of the second recess is greater than an area of the opening of the nozzle passage and such that a depth of the recess is less than the predetermined thickness, wherein grinding the ink ejection surface causes the second recess to disappear thereby establishing the straight conduit portion within a range of tolerance.