EP0435596A2
Expired / Lapsed
EP
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Mechanism and method for mounting and removing a toner cartridge of a development device
Assignee: Oki Electric Industry Co Ltd
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Filing: 1990-12-21
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Granted: —
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Expires: 2010-12-21
Abstract
Abstract A mechanism for mounting and removing a toner cartridge in a development device for use in an electrophotographic recording apparatus, a photocopier, and the like comprises a rotating member (21) for mounting a cartridge (24) filled with toner for replenishment, onto a main body (20) at a set position and opening an opening (11, 17a, 18a). A cross-shaped projection (23) on the main body and a cross-shaped groove (26) on the cartridge are provided for preventing lifting of the cartridge (24) when the rotating member (21) is rotated in one direction. In the method of mounting and removal, the rotating member (21) is rotated from the set position to the other direction, and is subsequently returned to the set position to have the projection (23) and the groove (26) engaged or disengaged.
Inventors
- 👤 Hiroshi C/O Oki Electric Ind. Co. Ltd. Kikuchi
- 👤 Kiyoshi C/O Oki Electric Ind. Co. Ltd. Matsuda
- 👤 Hisao C/O Oki Electric Ind. Co. Ltd. Ono
- 👤 Yoshiharu C/O Oki Electric Ind. Co. Ltd Momiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 06:47
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0877; G03G15/0881; G03G15/0886; G03G15/0865; G03G15/0867; G03G15/087; G03G15/0872; G03G2215/00; G03G2215/06; G03G2215/066; G03G2215/0663; G03G2215/0665; G03G2215/067; G03G2215/0675; Y; Y10; Y10S; Y10S222/00; Y10S222/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A toner development device comprising (a) a generally cylindrical toner cartridge (3) (b) a body (2) including a generally cylindrical recess (4) to receive the toner cartridge (3), and (c) releasable rotary means (13a, 14a, 8a, 8b) at opposite ends of the toner cartridge (3) and the body (2) releasably to receive the toner cartridge in the body for axial rotation such as to open the cartridge to release toner therefrom, characterised in that said releasable rotary means includes means (23, 26) at opposite ends of the cartridge and the body for positively releasably holding said cartridge (3) in axial alignment with the cylindrical recess (4) upon axial rotation of the cartridge whereby to inhibit the cartridge for lifting out of the recess upon said rotation.
Claim 2
Dependent Claim
29 words
A device according to claim 1 wherein said releasable rotary means includes cooperating cross-shaped slots and grooves (23, 26) at opposite ends of the cartridge (3) and recess (4).
Claim 3
Independent Claim
146 words
A method for mounting and removing a toner cartridge of a development device in which cross-shaped grooves on revolving members provided on both ends of a toner cartridge and cross-shaped projections on rotating members provided in opposition to each other in a toner cartridge mounting part of a main body are loosely engaged at a set position of the toner cartridge, and when the rotating members are rotated in one direction after cross-portions of the grooves and cross-portions of the projections are engaged with each other, a toner opening is opened to supply toner to the main body, wherein after said rotating members are rotated in the other direction from said set position, said rotating members are returned to said set position and the cross portions of said projections and the cross portions of said groove are engaged with each other or disengaged from each other.
Claim 4
Dependent Claim
98 words
A mechanism for mounting and removing a toner cartridge of a development device in which joint means of revolving members provided on both ends of a toner cartridge and rotating members provided in opposition to each other in a toner cartridge mounting part of a main body are engaged, and the rotating members are rotated in one direction to open an opening for supplying toner to the main body; wherein said joint means comprises: a cross-shaped projection provided on the rotating member; and a cross-shaped groove provided on the revolving member and is engageable with said cross-shaped projection.
Claim 5
Dependent Claim
135 words
A mechanism for mounting and removing a toner cartridge of a development device in which cross-shaped grooves on revolving members provided on both ends of a toner cartridge and cross-shaped projections on rotating members provided in opposition to each other in a toner cartridge mounting part of a main body are loosely engaged at a set position of the toner cartridge, and when the rotating members are rotated in one direction after cross-portions of the grooves and the cross portions of the projections are engaged with each other, a toner opening is opened to supply toner to the main body, wherein there is provided a biasing means which generates a biasing force to rotate said rotating members in said one direction when said rotating members are rotated in said other direction from said set position.
Claim 6
Dependent Claim
44 words
A mechanism for mounting and removing a toner cartridge of a development device as set forth in claim 3, wherein there is provided a rotating means for stopping said rotating members at said set position after rotating said rotating member in said other direction.
References Cited (Backward Citations)
No citation records indexed.
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