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:
Mar. 09, 2021
Filed:
Feb. 21, 2020
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Masato Ogasawara, Tokyo, JP;
Masayuki Kasukawa, Saitama, JP;
Koji Imamiya, Kanagawa, JP;
Nobuaki Takahashi, Shizuoka, JP;
Takao Izumi, Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA TEC KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developing device includes a housing having an opening in a wall thereof, a developing roller rotatably arranged within the housing, and a magnetic pole structure, wherein the developing roller is configured to carry a developer on an outer surface thereof using the magnetic force of the magnetic pole structure. The developing device further includes a gap forming member located within, and spaced from, the housing at a location downstream, in the rotation direction of the developing roller, of the opening in the wall of the housing, forming a first gap with respect to the developing roller and forming a second gap with respect to the housing, a blocking member arranged in the first gap, and a guide section configured to guide airflow passing through the second gap in a general direction toward the developing roller.