Patent Number: 6,305,794

Title: Liquid container, ink jet cartridge having same and manufacturing method of the container

Abstract: A liquid container includes a generally prism-like casing having a substantial air vent and having a corner portion formed by extensions of three sides of the prism configuration; an inner shell for containing liquid therein, the inner shell having outside equivalent or similar to inside of the casing; a liquid supply portion for supplying the liquid to outside from the liquid containing portion; a pinch-off portion where the inner shell is pinched by the casing; an integral portion where a maximum area side of the inner shell is integral with a side of the inner shell opposite therefrom.

Inventors: Sasaki; Toshiaki (Irvine, CA), Matsumoto; Hidehisa (Kawasaki, JP), Mihara; Hiroaki (Musashino, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: B41J 2/175 (20060101); B41J 002/175 ()

Expiration Date: 10/23/2018