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:
Jul. 22, 2008
Filed:
Jan. 11, 2006
Katsumi Okamoto, Nagano-ken, JP;
Masaharu Inui, Nagano-ken, JP;
Katsumi Okamoto, Nagano-ken, JP;
Masaharu Inui, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A developing device includes a housing, a developer bearing roller, a first seal member, a second seal member, a second seal supporting member, and an urging member. The housing has an opening and is adapted to contain a developer. The developer bearing roller is arranged facing the opening and adapted to bear the developer. The first seal member abuts against the developer bearing roller along an axial direction thereof to prevent the developer from spilling. The second seal member abuts against an end, in the axial direction, of the developer bearing roller along a circumferential direction thereof to prevent the developer from spilling. The second seal supporting member supports an end, in a longitudinal direction, of the second seal member, and is attached to the housing such that a boundary section between the second seal member and the second seal supporting member faces the housing. The urging member is arranged along the axial direction of the developer bearing roller and is adapted to urge the first seal member toward the developer bearing roller by abutting against the first seal member. The urging member has, at an end in its longitudinal direction, an extending section extending up to a position between the boundary section and the housing.