Canon Kabushiki Kaisha

Takayuki Tanno

Ryoji Inoue

Kyosuke Nagaoka

Kenta Udagawa

Noriyasu Nagai

Yasuo Kotaki

Tetsuya Ohashi

Takashi Fukushima

Takeho Miyashita

Hideaki Matsumura

Hironori Murakami

Taiji Maruyama

A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged; a cover portion configured to be attachable to the discharge port member and to be capable of opening and closing the discharge port; and a sealing portion formed of a contact portion between the cover portion and the discharge port member. The cover portion includes a groove structure between an outer periphery of the cover portion and the sealing portion.

Liquid storage container

A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged; a cover portion configured to be attachable to and detachable from the discharge port member and to be capable of opening and closing the discharge port; a liquid stop valve provided inside the discharge port member; and a protrusion provided inside the cover portion and configured to open the liquid stop valve in closing the cover portion. In the liquid storage container, the storage portion is sealable by at least one of a first sealing portion formed of a contact portion between the cover portion and the discharge port member and a second sealing portion formed of the liquid stop valve, and the first sealing portion and the second sealing portion are configured to be simultaneously unsealed.

An ink cartridge includes a housing that has an air communication port and stores a liquid inside and a sealing member attached to the housing in such a way as to cover the air communication port. The sealing member includes an adherent region attached to the housing and a non-adherent region not attached to the housing. The non-adherent region extends to an end portion of the sealing member and forms a communication passage which establishes communication between the air communication port and air.

Ink cartridge with a housing sealed by a sealing member that changeably forms an air communication passage

Growing community of inventors

Tokyo, Japan

Takayuki Tanno