Patent ID: 8613503
Filing Date: 2013-12-24
Classification: B41J

Abstract:
1. An ink tank for storing ink, comprising: a case member and a cover member which form a chamber for storing ink; an absorber for holding ink, the absorber being provided inside the chamber; a projecting portion provided on an inner surface of the cover member and projecting toward the absorber; an air communication hole formed in the projecting portion so as to pass air through the projecting portion; a plurality of ribs contacting the absorber, the plurality of ribs being provided on the inner surface of the cover member; a first groove formed on the inner surface of the cover member so as to surround the projecting portion, the first groove being spaced apart from the projecting portion; and a second groove formed on the inner surface of the cover member and formed around an outside of an area surrounded by the first groove; wherein the second groove is formed along a peripheral portion of the cover member so as to define a closed area inside of the second groove, the plurality of ribs are provided inside of the closed area, and the first groove and the second groove are communicated with each other.