US 12,181,806 B2Granted

Developing cartridge

AssigneeBrother Kogyo Kabushiki Kaisha

InventorNao Itabashi

Life of this patent

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Abstract

A developing cartridge may include a developing roller, a casing capable of containing a developer therein, a developing electrode movable with the casing and the developing roller and pivotable about a developing roller shaft of the developing roller in a direction, a first lever movable relative to the casing, and a holder configured to hold the first lever relative to the casing, in case where the developing electrode pivots from one side of the direction to an other side of the direction, the first lever stops the pivotable movement of the developing electrode from one side of the direction to the other side of the direction and the holder prevents the first lever from coming off the holder from the one side of the direction to the other side of the direction.

Claims5

Dependent claims

A developing cartridge comprising:

a developing roller rotatable about an axis extending in a first direction;
a casing capable of containing a developer material, the developing roller being located at one end of the casing in a second direction that crosses the first direction;
and
a first lever movable relative to the casing between a first position and a second position, the first lever including one end portion that functions as the point of effort, an other end portion that functions as the point of application, and a cam surface that is located between the one end portion and the other end portion and that functions as a pivot point,
wherein when the first lever moves around the cam surface serving as a central point from the first position to the second position in response to movement of the one end portion, the other end portion movable with the casing,
wherein the developing cartridge further comprises:
a holder configured to hold the first lever relative to the casing, and
wherein, the holder prevents the first lever from coming off the holder.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/057,292Filed 21 Nov 2022 · continuation
Priority: JP 2019-05854926 Mar 2019
Published: US 2023/0079258 A116 Mar 2023
Granted: 31 Dec 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G03G 15/0865
Arrangements for preparing, mixing, supplying or dispensing developer: arrangements for supplying new developer
G03G 21/1821
Having a submodular arrangement: means for connecting the different parts of the process cartridge, e.g. attachment, positioning of parts with…
G03G 15/0808
On a donor element, e.g. belt, roller: characterised by the developer supplying means, e.g. structure of developer supply roller
G03G 15/0889
Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity: for agitation or…

Family

Application16/826,688Parent of this continuation · filed 23 Mar 2020
Application17/172,273Parent of this continuation · filed 10 Feb 2021
US 10,921,731 B2Parent of this continuation · filed 16 Feb 2021
US 2023/0079258 A1Pre-grant publication · published 16 Mar 2023
US 11,513,452 B2Parent of this continuation
US 2020/0310291 A1Published application
US 2021/0165343 A1Published application
US 12,181,806 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

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