IP Library › Granted Patent US 12,321,110

Granted Patent B2

US 12,321,110 · App. 17/820,292 · Granted Jun 3, 2025

Developing cartridge having coupling and developing roller

Inventors: Nao Itabashi (Nagoya, JP); Naoya Kamimura (Ichinomiya, JP)

Assignee: BROTHER KOGYO KABUSHIKI KAISHA

G03G15/0889 G03G15/065 G03G15/0865 G03G21/1676 G03G21/1864 G03G21/1896

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Quick Facts

Patent No.: US 12,321,110
App. No.: 17/820,292
Granted: Jun 3, 2025
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.

Claims (207)

1. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

an electrode electrically connected to a metal bar that extends from the one end portion to the another end portion of the housing, the electrode being positioned at the another end portion of the housing;

and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to rotation of the coupling,

wherein the detection protrusion is positioned farther from the developing roller than a part of the electrode in a second direction.

2. The cartridge according to claim 1 , wherein the second direction is crossing the first direction.

3. The cartridge according to claim 1 , wherein an entirety of the electrode is positioned at the another end portion of the housing.

4. The cartridge according to claim 1 , wherein the developing roller is rotatable according to the rotation of the coupling.

5. The cartridge according to claim 1 , wherein the detection protrusion moves relative to the electrode.

6. The cartridge according to claim 1 , wherein the metal bar is a metal cylindrical bar.

7. The cartridge according to claim 6 , wherein the metal cylindrical bar is a metal shaft.

8. The cartridge according to claim 7 , the metal shaft is a developing roller shaft of the developing roller.

9. The cartridge according to claim 7 , further comprising:

a supply roller rotatable about a third axis extending in the first direction, wherein the metal shaft is a supply roller shaft of the supply roller.

10. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

a supply roller rotatable about a third axis extending in the first direction;

an electrode electrically connected to the supply roller, the electrode being positioned at the another end portion of the housing;

a shaft moveable according to rotation of the coupling; and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to the movement of the shaft,

wherein the detection protrusion has an inclined surface.

11. The cartridge according to claim 10 , wherein the detection protrusion is positioned farther from the developing roller than a part of the electrode in a second direction, and wherein the second direction is crossing the first direction.

12. The cartridge according to claim 10 , wherein an entirety of the electrode is positioned at the another end portion of the housing.

13. The cartridge according to claim 10 , wherein the developing roller is rotatable according to the rotation of the coupling.

14. The cartridge according to claim 10 , wherein the detection protrusion moves relative to the electrode.

15. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

a supply roller rotatable about a third axis extending in the first direction;

and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to rotation of the coupling,

wherein the supply roller includes a supply roller shaft,

wherein the supply roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the first end portion of the supply roller shaft is positioned at the one end portion of the housing, the second end portion of the supply roller shaft is positioned at the another end portion of the housing, and

wherein the electrode has an electric-power receiving protrusion, the electric-power receiving protrusion being spaced apart from the second end portion of the supply roller shaft.

16. The cartridge according to claim 15 , wherein the electric-power receiving protrusion extends in the first direction.

17. The cartridge according to claim 15 , wherein the electric-power receiving protrusion is made of conductive resin.

18. The cartridge according to claim 15 , wherein the detection protrusion is positioned farther from the developing roller than a part of the electrode in a second direction, and wherein the second direction is crossing the first direction.

19. The cartridge according to claim 15 , wherein an entirety of the electrode is positioned at the another end portion of the housing.

20. The cartridge according to claim 15 , wherein the developing roller is rotatable according to the rotation of the coupling.

21. The cartridge according to claim 15 , wherein the detection protrusion moves relative to the electrode.

22. The cartridge according to claim 15 , wherein the detection protrusion is a separate component from the electric-power receiving protrusion.

23. The cartridge according to claim 15 , wherein the detection protrusion covers a part of the electric-power receiving protrusion.

24. The cartridge according to claim 15 , wherein the metal bar is a metal cylindrical bar.

25. The cartridge according to claim 24 , wherein the metal cylindrical bar is a metal shaft.

26. The cartridge according to claim 25 , wherein the metal shaft is a developing roller shaft of the developing roller.

27. The cartridge according to claim 25 ,

wherein the metal shaft is the supply roller shaft.

28. A cartridge, comprising:

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in a first direction;

a developing roller rotatable about a first axis extending in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

an agitator rotatable about a third axis extending in the first direction according to rotation of the coupling;

an electrode positioned at the another end portion of the housing, the electrode being configured to be electrically connected to a metal bar that extends from the one end portion to the another end portion of the housing; and

a plate moving linearly according to the rotation of the agitator.

29. The cartridge according to claim 28 , wherein the plate moves in a second direction that is crossing the first direction.

30. The cartridge according to claim 28 , further comprising a pinion gear attached to an agitator shaft of the agitator,

wherein the plate has a plurality of gear teeth which are engaged with the pinion gear.

31. The cartridge according to claim 28 , wherein the electrode is configured to be supplied with electric power from outside.

32. The cartridge according to claim 28 , wherein the electrode is made of a metal.

33. The cartridge according to claim 28 , wherein the plate moves relative to the electrode.

34. The cartridge according to claim 28 , further comprising:

a supply roller configured to supply the developer in the housing to the developing roller, the supply roller having a supply roller shaft;

a supply gear attached to the supply roller shaft, the supply gear being positioned at the one end portion of the housing; and

a developing gear attached to a developing roller shaft of the developing roller, the developing gear being positioned at the one end portion of the housing,

wherein the coupling has a coupling gear which is engaged with the supply gear and the developing gear.

35. The cartridge according to claim 34 , further comprising an agitator gear which is attached to an agitator shaft of the agitator, the agitator gear being positioned at the one end portion of the housing,

wherein the coupling gear is positioned between the agitator gear and the developing gear.

36. The cartridge according to claim 28 , further comprising:

a supply roller configured to supply the developer in the housing to the developing roller, the supply roller having a supply roller shaft;

a supply gear attached to the supply roller shaft, the supply gear being positioned at the one end portion of the housing;

an agitator gear attached to an agitator shaft of the agitator, the agitator gear being positioned at the one end portion of the housing; and

a gear cover fixed to the housing with screws, the gear cover covering the supply gear and the agitator gear,

wherein the gear cover has a coupling exposure opening which allows a part of the coupling to be exposed to an outside of the gear cover.

37. The cartridge according to claim 28 , wherein the plate is positioned at the another end portion of the housing.

38. The cartridge according to claim 28 , wherein the metal bar is a metal cylindrical bar.

39. The cartridge according to claim 38 , wherein the metal cylindrical bar is a metal shaft.

40. The cartridge according to claim 39 , wherein the metal shaft is a developing roller shaft of the developing roller.

41. The cartridge according to claim 39 , further comprising:

a supply roller rotatable about a third axis extending in the first direction,

wherein the metal shaft is a supply roller shaft of the supply roller.

42. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

an electrode electrically connected to a conductive roller that extends from the one end portion to the another end portion of the housing, the electrode being positioned at the another end portion of the housing; and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to the rotation of the coupling,

wherein the detection protrusion is positioned farther from the developing roller than a part of the electrode in a second direction.

43. The cartridge according to claim 42 , wherein the conductive roller is the developing roller.

44. The cartridge according to claim 42 , further comprising:

a supply roller rotatable about a third axis extending in the first direction,

wherein the conductive roller is the supply roller.

45. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

an electrode being positioned at the another end portion of the housing;

a conductive path that extends from the electrode to the one end portion of the housing; and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to rotation of the coupling,

wherein the detection protrusion is positioned farther from the developing roller than a part of the electrode in a second direction.

46. The cartridge according to claim 45 ,

wherein the developing roller includes one end portion and another end portion being spaced apart from the one end portion in the first direction,

wherein the one end portion of the developing roller is positioned at the one end portion of the housing, the another end portion of the developing roller is positioned at the another end portion of the housing, and

wherein the conductive path extends from the electrode to the one end portion of the developing roller.

47. The cartridge according to claim 46 ,

wherein the developing roller includes a developing roller shaft,

wherein the developing roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the first end portion of the developing roller shaft is positioned at the one end portion of the housing, the second end portion of the developing roller shaft is positioned at the another end portion of the housing, and

wherein the conductive path extends from the electrode to the first end portion of the developing roller shaft.

48. The cartridge according to claim 45 , further comprising:

a supply roller rotatable about a third axis extending in the first direction,

wherein the supply roller includes one end portion and another end portion being spaced apart from the one end portion in the first direction,

wherein the one end portion of the supply roller is positioned at the one end portion of the housing, the another end portion of the supply roller is positioned at the another end portion of the housing, and

wherein the conductive path extends from the electrode to the one end portion of the supply roller.

49. The cartridge according to claim 48 , further comprising:

wherein the supply roller includes a supply roller shaft,

wherein the supply roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the conductive path extends from the electrode to the first end portion of the supply roller shaft.

50. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

a supply roller rotatable about a third axis extending in the first direction;

an electrode electrically connected to a conductive roller, the electrode being positioned at the another end portion of the housing; and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to rotation of the coupling,

wherein the supply roller includes a supply roller shaft,

wherein the supply roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the electrode has an electric-power receiving protrusion, the electric-power receiving protrusion being spaced apart from the second end portion of the supply roller shaft.

51. The cartridge according to claim 50 , wherein the conductive roller is the developing roller.

52. The cartridge according to claim 50 ,

wherein the conductive roller is the supply roller.

53. A cartridge, comprising:

a developing roller rotatable about a first axis extending in a first direction;

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

a supply roller rotatable about a third axis extending in the first direction;

an electrode positioned at the another end portion of the housing;

a conductive path that extends from the electrode to the one end portion of the housing; and

a detection protrusion positioned at the another end portion of the housing, the detection protrusion being movable according to rotation of the coupling,

wherein the supply roller includes a supply roller shaft,

wherein the supply roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the electrode has an electric-power receiving protrusion, the electric-power receiving protrusion being spaced apart from the second end portion of the supply roller shaft.

54. The cartridge according to claim 53 ,

wherein the developing roller includes one end portion and another end portion being spaced apart from the one end portion in the first direction,

wherein the conductive path extends from the electrode to the one end portion of the developing roller.

55. The cartridge according to claim 54 ,

wherein the developing roller includes a developing roller shaft,

wherein the developing roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the conductive path extends from the electrode to the first end portion of the developing roller shaft.

56. The cartridge according to claim 53 ,

wherein the supply roller includes one end portion and another end portion being spaced apart from the one end portion in the first direction,

wherein the conductive path extends from the electrode to the one end portion of the supply roller.

57. The cartridge according to claim 56 ,

wherein the conductive path extends from the electrode to the first end portion of the supply roller shaft.

58. A cartridge, comprising:

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in a first direction;

a developing roller rotatable about a first axis extending in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

an agitator rotatable about a third axis extending in the first direction according to rotation of the coupling;

an electrode positioned at the another end portion of the housing, the electrode being configured to be electrically connected to a conductive roller that extends from the one end portion to the another end portion of the housing; and

a plate moving linearly according to the rotation of the agitator.

59. The cartridge according to claim 58 , wherein the plate is positioned at the another end portion of the housing.

60. The cartridge according to claim 58 , wherein the conductive roller is the developing roller.

61. The cartridge according to claim 58 , further comprising:

a supply roller rotatable about a third axis extending in the first direction, and

wherein the conductive roller is the supply roller.

62. A cartridge, comprising:

a housing configured to accommodate developer therein, the housing having one end portion and another end portion separated from the one end portion in a first direction;

a developing roller rotatable about a first axis extending in the first direction;

a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the one end portion of the housing;

an agitator rotatable about a third axis extending in the first direction according to rotation of the coupling;

an electrode positioned at the another end portion of the housing;

a conductive path that extends from the electrode to the one end portion of the housing; and

a plate moving linearly according to the rotation of the agitator.

63. The cartridge according to claim 62 , wherein the plate is positioned at the another end portion of the housing.

64. The cartridge according to claim 62 ,

wherein the developing roller includes one end portion and another end portion being spaced apart from the one end portion in the first direction,

wherein the conductive path extends from the electrode to the one end portion of the developing roller.

65. The cartridge according to claim 64 ,

wherein the developing roller includes a developing roller shaft,

wherein the developing roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the conductive path extends from the electrode to the first end portion of the developing roller shaft.

66. The cartridge according to claim 62 , further comprising:

a supply roller rotatable about a fourth axis extending in the first direction,

wherein the supply roller includes one end portion and another end portion being spaced apart from the one end portion in the first direction,

wherein the conductive path extends from the electrode to the one end portion of the supply roller.

67. The cartridge according to claim 66 , further comprising:

wherein the supply roller includes a supply roller shaft,

wherein the supply roller shaft includes a first end portion and a second end portion being spaced apart from the first end portion in the first direction,

wherein the conductive path extends from the electrode to the first end portion of the supply roller shaft.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 17, 2022

From: ITABASHI, NAO; KAMIMURA, NAOYA

To: BROTHER KOGYO KABUSHIKI KAISHA

Reel/Frame 060829/0993 →

Priority Claims (1)

JP 2011-190035 · Aug 31, 2011 · national

Continuity (11)

Continuation 17730552 · Apr 27, 2022

Continuation 17174500 · Feb 12, 2021

Continuation 16930865 · Jul 16, 2020

Continuation 16723160 · Dec 20, 2019

Continuation 16263224 · Jan 31, 2019

Continuation 15820203 · Nov 21, 2017

Continuation 15363985 · Nov 29, 2016

Continuation 15061551 · Mar 4, 2016

Continuation 14665763 · Mar 23, 2015

Continuation 13598708 · Aug 30, 2012

Related Publication 20220390878A1 · Dec 8, 2022

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