	US 7,455,397 B2
	Ink cartridge attachment/detachment device, recording apparatus, liquid ejection apparatus, and liquid container
Yasuto Sakai, Nagano (Japan); Satoshi Shinada, Nagano (Japan); Tokujiro Okuno, Nagano (Japan); Satoshi Kobayashi, Nagano (Japan); and Shuichi Kadota, Nagano (Japan)
Assigned to Seiko Epson Corporation, Tokyo (Japan)
Filed on Dec. 21, 2004, as Appl. No. 11/19,510.
Claims priority of application No. P2003-424832 (JP), filed on Dec. 22, 2003; application No. P2004-031295 (JP), filed on Feb. 06, 2004; application No. P2004-032152 (JP), filed on Feb. 09, 2004; and application No. P2004-244780 (JP), filed on Aug. 25, 2004.
Prior Publication US 2005/0168545 A1, Aug. 04, 2005
Int. Cl. B41J 2/175 (2006.01)

U.S. Cl. 347—86

21 Claims

1. An ink cartridge, comprising:

a front wall, a rear wall, a top wall, a bottom wall, and a first side wall having an opening, and a second side wall, together defining an interior, at least part of the front wall and part of the first side wall lying in intersecting planes, the interior including a plurality of ink reservoirs and a waste ink storage section, and a recess, the recess communicating with the opening in the first side wall, the recess having an inner surface;

a projection protruding outward from the first side wall, the projection including a pressing surface lying in a plane that is approximately parallel to the front wall, the pressing surface leading to the recess;

wherein the front wall has a plurality of ink supply openings, each said ink supply opening communicating with an associated said ink reservoir, and a waste ink inlet opening communicating with the waste ink storage section.