US 11,733,646 B2
Developing cartridge provided with cover
Nao Itabashi, Nagoya (JP); Naoya Kamimura, Ichinomiya (JP); Ryuya Yamazaki, Nagoya (JP); and Hideshi Nishiyama, Owariasahi (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Sep. 15, 2021, as Appl. No. 17/475,485.
Application 17/475,485 is a continuation of application No. 17/155,396, filed on Jan. 22, 2021.
Application 17/155,396 is a continuation of application No. 16/829,909, filed on Mar. 25, 2020, granted, now 10,901,361, issued on Jan. 26, 2021.
Application 16/829,909 is a continuation of application No. 16/408,999, filed on May 10, 2019, granted, now 10,620,580, issued on Apr. 14, 2020.
Application 16/408,999 is a continuation of application No. 16/032,135, filed on Jul. 11, 2018, granted, now 10,303,112, issued on May 28, 2019.
Application 16/032,135 is a continuation of application No. 15/866,939, filed on Jan. 10, 2018, granted, now 10,048,645, issued on Aug. 14, 2018.
Application 15/866,939 is a continuation of application No. 15/351,827, filed on Nov. 15, 2016, granted, now 9,891,581, issued on Feb. 13, 2018.
Application 15/351,827 is a continuation of application No. 15/078,362, filed on Mar. 23, 2016, granted, now 9,529,302, issued on Dec. 27, 2016.
Application 15/078,362 is a continuation of application No. 13/599,335, filed on Aug. 30, 2012, granted, now 9,323,214, issued on Apr. 26, 2016.
Claims priority of application No. 2011-190037 (JP), filed on Aug. 31, 2011.
Prior Publication US 2021/0405581 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 21/18 (2006.01); G03G 21/16 (2006.01); G03G 15/08 (2006.01)
CPC G03G 21/1821 (2013.01) [G03G 15/0865 (2013.01); G03G 21/1647 (2013.01); G03G 21/1676 (2013.01); G03G 21/1857 (2013.01); G03G 21/1864 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A developing cartridge comprising:
a developing roller extending in a first direction, the developing roller being rotatable about a first axis extending in the first direction, the developing roller including a developing roller shaft extending in the first direction;
a frame configured to accommodate developing agent therein, the frame including one end portion and another end portion separated from the one end portion in a second direction crossing the first direction, the developing roller being positioned closer to the one end portion than the another end portion in the second direction;
a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at a first side wall of the frame and having a recessed connection portion;
a gear rotatably supported at a second side wall of the frame opposite to the first side wall of the frame in the first direction;
a cover covering at least a portion of the first side wall of the frame, the cover including a coupling collar extending in the first direction, the coupling collar covering at least a portion of the coupling and having an opening configured to allow at least a portion of the coupling to be exposed;
a second engagement protrusion extending in the first direction, the second engagement protrusion being positioned closer to the developing roller shaft than the second axis in the second direction, wherein the second engagement protrusion is positioned at the second side wall of the frame; and
a gear cover covering at least a portion of the gear, the gear cover having an opening configured to allow at least a portion of the gear to be exposed, wherein the gear cover comprises the second engagement protrusion.