The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 2026
Filed:
Nov. 18, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A cartridge that is attachable to and detachable from an apparatus main body includes: a storage portion that includes a discharge port for developer; a stirring member disposed inside the storage portion; a pump capable of varying the volume of the storage portion; and a sealing member including a sealing portion, which is attached to an inner wall of the storage portion so as to seal the discharge port, with the sealing portion being peeled off from the inner wall by rotation of the stirring member. When the cartridge is unused, the apparatus main body provides the cartridge with a driving force for the pump after a driving force for the stirring member is provided, and the sealing portion is at least partially peeled off from the inner wall, and moreover the discharge port makes the inside and the outside of the storage portion communicate with each other.