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:
May. 13, 2025
Filed:
Nov. 10, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroyuki Munetsugu, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A development apparatus to and from which a toner container is attachable and detachable includes a developing roller, a storage unit configured to store toner to be carried by the developing roller, an attachment unit to and from which the toner container is attachable and detachable and provided with a reception port for receiving toner from the toner container to the storage unit, an opening through which an inside of the storage unit and an outside of the storage unit communicate with each other, a filter configured to cover the opening, permit a passage of air and disturb a passage of toner, and a main unit shutter movable between a non-communication position and a communication position and configured to shield the opening when the main unit shutter is located at the non-communication position and open the opening when the main unit shutter is located at the communication position.