Canon Kabushiki Kaisha

Hideo Okada

Sadayuki Sugama

Toshiaki Sasaki

A liquid container includes a substantially prism-like outer wall provided with a substantial air vent portion and having a corner formed by 3 surfaces: an inner wall having outer surfaces equivalent or similar to inside surfaces of said outer wall and a corner corresponding the corner of said outer wall, said inner wall defining a liquid accommodating portion for containing liquid therein, said inner wall further having a liquid supply portion for supplying the liquid out of said liquid accommodating portion; wherein said inner wall has a thickness which decreases from a central portion of the surfaces of the prism-like shape to the corner, and said outer wall and and said inner wall are separable from each other.

LIQUID ACCOMMODATING CONTAINER PROVIDING NEGATIVE PRESSURE, MANUFACTURING METHOD FOR THE SAME, INK JET CARTRIDGE HAVING THE CONTAINER AND INK JET RECORDING HEAD AS A UNIT, AND INK JET RECORDING APPARATUS

A liquid container includes a substantially prism-like outer wall provided with a substantial air vent portion and having a corner formed by 3 surfaces; an inner wall having outer surfaces equivalent or similar to inside surfaces of said outer wall and a corner corresponding the corner of said outer wall, said inner wall defining a liquid accommodating portion for containing liquid therein, said inner wall further having a liquid supply portion for supplying the liquid out of said liquid accommodating portion; wherein said inner wall has a thickness which decreases from a central portion of the surfaces of the prism-like shape to the corner, and said outer wall and and said inner wall are separable from each other.

Liquid accommodating container providing negative pressure, manufacturing method for the same, ink jet cartridge having the container and ink jet recording head as a unit, and ink jet recording apparatus

A liquid container includes a substantially prism-like outer wall provided with a substantial air vent portion and having a corner formed by 3 surfaces: an inner wall having outer surfaces equivalent or similar to inside surfaces of said outer wall and a corner corresponding the corner of said outer wall, said inner wall defining a liquid accommodating portion for containing liquid therein, said inner wall further having a liquid supply portion for supplying the liquid out of said liquid accommodating portion; wherein said inner wall has a thickness which decreases from a central portion of the surfaces of the prism-like shape to the corner, and said outer wall and said inner wall are separable from each other.

Growing community of inventors

Fuchu, Japan

Hideo Okada