The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2005
Filed:
Apr. 23, 2004
Isao Tsuruma, Kanagawa, JP;
Isao Tsuruma, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The present invention provides a method of producing a liquid ejection head having a solution guide member protruding on a head substrate. The solution guide member has a sharp-pointed portion protruding from a liquid surface of a flowing solution in which charged particles are dispersed. The solution guide member guides the solution to the sharp-pointed portion such that the solution is ejected from the sharp-pointed portion by an electrostatic force. The method comprises the steps of forming a photosensitive resin layer on the head substrate; molding a convex portion having the sharp-pointed portion on a surface of the formed photosensitive resin layer by pressing a mold member against the surface of the photosensitive resin layer; and exposing a region of the molded convex portion; and developing the exposed photosensitive resin layer to produce the solution guide member provided on the head substrate.