Patent ID: 8721050
Filing Date: 2014-05-13
Classification: B41J

Abstract:
1. A liquid discharge head, comprising: an energy generating element which generates thermal energy and contains a heat generation resistant layer containing a material which generates heat by energization and a pair of electrodes which are used for energizing the heat generation resistant layer and whose end surfaces are separated from each other; an insulating layer covering the pair of electrodes and the heat generation resistant layer and containing an insulating material; a protective layer provided above the insulating layer at least at a position corresponding to the energy generating element and containing a metal material containing iridium (Ir) or ruthenium (Ru); and a covering layer covering at least portions of the protective layer corresponding to the end surfaces of the pair of electrodes, being provided at a position where the covering layer overlaps a part of the energy generating element in a direction in which the layers are stacked and containing a metal material containing tantalum (Ta) or niobium (Nb).