US 12,072,006 B2
Developing device
Takashi Shimizu, Nagoya (JP); Yasuo Fukamachi, Nagoya (JP); Keita Shimizu, Nagoya (JP); and Kazutoshi Nakamura, Kuwana (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Sep. 13, 2022, as Appl. No. 17/931,582.
Application 17/931,582 is a continuation of application No. 17/337,729, filed on Jun. 3, 2021, granted, now 11,448,289.
Application 17/337,729 is a continuation of application No. 16/823,679, filed on Mar. 19, 2020, granted, now 11,028,903, issued on Jun. 8, 2021.
Claims priority of application No. 2019-059882 (JP), filed on Mar. 27, 2019; and application No. 2019-059883 (JP), filed on Mar. 27, 2019.
Prior Publication US 2023/0003283 A1, Jan. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16H 3/18 (2006.01); G03G 15/08 (2006.01)
CPC F16H 3/18 (2013.01) [G03G 15/0808 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A developing device comprising:
a developing roller that is rotatable about a first axis extending in an axial direction;
a first gear for rotating the developing roller;
a casing that is capable of accommodating toner;
a coupling that is rotatable both in a first direction and in a second direction opposite to the first direction about a second axis extending in the axial direction and includes a coupling gear;
an auger or an agitator that is rotatable about an auger axis extending in the axial direction;
a transporting gear that is rotatable together with the auger or the agitator, the transporting gear having a first state in which the transporting gear is rotatable with the coupling when the coupling gear rotates in the first direction and a second state in which the transporting gear is not rotatable with the coupling when the coupling gear rotates in the second direction,
wherein the first gear is configured to rotate the developing roller in the second direction based on rotation of the coupling gear in either the first or the second direction.