Patent ID: 7097293
Filing Date: 2006-08-29
Classification: B41J

Abstract:
1. A liquid cartridge comprising: a liquid containing section for containing a liquid; a cartridge body having a liquid supplying part that supplies the liquid in said liquid containing section to outside, a wall face, and a concave part formed in the wall face of the cartridge body, the concave part itself having a wall face; a valve member contained in the concave part of said cartridge body and which opens when a sufficient pressure difference between said liquid containing section and said liquid supplying part occurs; a valve lid that holds said valve member by being fitted into said concave part and also presses an outer circumference of said valve member toward the wall face of said concave part; a projection formed on a surface of said wall face in said concave part, said valve member contacting said projection to be in pressure contact with said valve member along said outer circumference of said valve member; a seal member that urges an outer surface of said valve lid opposite to a surface, on which said valve member is provided, and a wall face of said cartridge body around said outer surface of said valve lid in a direction so that said valve lid is in contact with said projection.