Patent ID: 6225032
Filing Date: 2001-05-01
Classification: B41J,Y10S

Abstract:
A method for manufacturing a liquid jet recording head provided with a discharge port to discharge liquid and a discharge port plate having said discharge port by performing an ablation operation, the ablation operation being performed by projecting an image through a mask onto said discharge port plate, using a coherent laser beam as a light source, to form said discharge port, the method comprising the steps of:forming a water-repellent layer on a first surface of said discharge port plate on a liquid discharge side; andperforming said ablation operation by irradiating said laser beam towards a second, opposite surface of said discharge port plate while said first surface of said discharge port plate is exposed to an atmosphere containing at least one fluorine atom, to cause said discharge port to be formed and to cause a substance containing the at least one fluorine atom excited by said laser beam to adhere to the first surface having said water-repellent layer formed thereon.