US 11,988,978 B2
Developing cartridge capable of reducing size of image forming apparatus
Nao Itabashi, Nagoya (JP); and Junichi Yokoi, Nagoya (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Apr. 17, 2023, as Appl. No. 18/301,293.
Application 18/301,293 is a continuation of application No. 17/568,337, filed on Jan. 4, 2022, granted, now 11,675,289.
Application 17/568,337 is a continuation of application No. 17/077,147, filed on Oct. 22, 2020, granted, now 11,221,567.
Application 17/077,147 is a continuation of application No. 16/867,612, filed on May 6, 2020, granted, now 11,067,919, issued on Jul. 20, 2021.
Application 16/867,612 is a continuation of application No. 16/593,623, filed on Oct. 4, 2019, granted, now 10,649,369, issued on May 12, 2020.
Application 16/593,623 is a continuation of application No. 16/361,519, filed on Mar. 22, 2019, granted, now 10,444,667, issued on Oct. 15, 2019.
Application 16/361,519 is a continuation of application No. 16/031,011, filed on Jul. 10, 2018, granted, now 10,254,681, issued on Apr. 9, 2019.
Application 16/031,011 is a continuation of application No. 15/280,614, filed on Sep. 29, 2016, granted, now 10,025,225, issued on Jul. 17, 2018.
Claims priority of application No. 2015-254201 (JP), filed on Dec. 25, 2015.
Prior Publication US 2023/0367240 A1, Nov. 16, 2023
Int. Cl. G03G 15/08 (2006.01); G03G 21/16 (2006.01); G03G 21/18 (2006.01)
CPC G03G 15/0867 (2013.01) [G03G 15/0863 (2013.01); G03G 21/1647 (2013.01); G03G 21/1896 (2013.01)] 45 Claims
OG exemplary drawing
 
1. A developing cartridge comprising:
a casing configured to accommodate developer therein, the casing extending in a first direction;
a roller rotatable about a first axis extending in the first direction, the roller including a roller shaft extending in the first direction, the developer on an outer peripheral surface of the roller;
a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction;
a shaft movable according to rotation of the coupling;
a detection protrusion movable according to movement of the shaft, the detection protrusion being positioned at another side of the casing in the first direction;
an electrode electrically connected to the roller shaft, the electrode being positioned at the another side of the casing in the first direction; and
a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction, the electric contact surface being spaced apart from the coupling.