Feeding device

• US 10,073,380 B2
• Filed: 10/07/2016
• Issued: 09/11/2018
• Est. Priority Date: 10/14/2015
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nosho, Hiroaki, Hamada, Takatoshi, Komatsu, Noriyuki, Murakami, Ryuta, Matsumaru, Naoki, Maeda, Naoki
• Primary Examiner(s): GIAMPAOLO II, THOMAS S
• Application Number:
  US15/288,024
• Publication Number:
  US 20170108801A1
• Time in Patent Office: 704 Days
• Field of Search: None
• CPC Class Codes: G03G 15/0887 Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
• CPC Class Codes: G03G 21/105 Arrangements for conveying toner waste
• CPC Class Codes: G03G 2215/0827 Augers

Abstract

A feeding device for feeding developer includes a first feeding member for feeding the developer in a feeding direction and including a drive transmitting portion, and a second feeding member including a drive receiving portion and a helical blade as a feeding portion. In addition, a bearing portion rotatably supports the second feeding member in a portion between the drive receiving portion and the helical blade, wherein the drive transmitting portion and the drive receiving portion engage with each other so as to enable delivery of the developer from the first feeding member to the second feeding member while transmitting a driving force of the first feeding member to the second feeding member. The bearing portion is provided on one side of a second rotational axis of the second feeding member with respect to the feeding direction.

Claims

1. A feeding device for feeding developer along a first feeding path and a second feeding path, comprising:

a first feeding member rotatable around a first rotational axis extended in a first direction and for feeding the developer in a feeding direction along the first direction, said first feeding member being provided in the first feeding path and including a drive transmitting portion;

a second feeding member rotatable around a second rotational axis extended in a second direction crossing the first direction and for feeding the developer along the second direction, and said second feeding member being provided in the second feeding path and including a drive receiving portion and a helical blade as a feeding portion; and

a bearing portion for rotatably supporting said second feeding member, said bearing portion being configured to support said second feeding member in a portion between said drive receiving portion and said helical blade,

wherein said drive transmitting portion and said drive receiving portion engage with each other so as to enable delivery of the developer from said first feeding member to said second feeding member while transmitting a driving force of said first feeding member to said second feeding member, and

wherein said bearing portion is provided on one side of the second rotational axis with respect to the feeding direction.

2. A feeding device according to claim 1, wherein said bearing portion includes a first portion for preventing movement of said second feeding member in the first direction, and

wherein said first portion is disposed only on an upstream side of said second rotational axis in the feeding direction.

3. A feeding device according to claim 2, wherein a wall surface crossing each of the first direction and the second direction is provided so that a distance between said first feeding member and said wall surface is shorter in a downstream side than in the upstream side with respect to the feeding direction.

4. A feeding device according to claim 3, wherein with respect to the second direction, the position of said wall surface and a position of said bearing portion at least partly overlap with each other.

5. A feeding device according to claim 3, wherein with respect to the first direction, the position of said wall surface and a position of said drive transmitting portion at least partly overlap with each other.

6. A feeding device according to claim 1, wherein said first feeding member includes a first helical blade as a feeding portion and a first shaft.

7. A feeding device according to claim 6, wherein said drive transmitting portion includes engaging blades projecting from said first shaft toward a direction crossing the first direction.

8. A feeding device according to claim 1, wherein said bearing portion includes a first portion for preventing movement of said second feeding member in the first direction, and wherein said first portion is disposed only on a downstream side of the second rotational axis in the feeding direction,

wherein a wall surface crossing each of the first direction of the first rotational axis and the second direction of the second rotational axis is provided so that a distance between said first feeding member and said wall surface is longer in the downstream side than in an upstream side with respect to the feeding direction.

9. A feeding device according to claim 8, wherein said first feeding member includes a first helical blade as a feeding portion and a first shaft.

10. A feeding device according to claim 9, wherein said drive transmitting portion includes engaging blades projecting from said first shaft toward a direction crossing the first direction.

11. A feeding device according to claim 8, wherein with respect to the second direction, a position of said wall surface and a position of said bearing portion at least partly overlap with each other.

12. A feeding device according to claim 11, wherein with respect to the first direction, the position of said wall surface and a position of said drive transmitting portion at least partly overlap with each other.

13. A cartridge comprising:

a photosensitive member; and

said feeding device according to claim 1,

wherein said first feeding member and said second feeding member are configured to feed residual developer removed from said photosensitive member.

14. A feeding device for feeding developer along a first feeding path and a second feeding path, comprising:

a first feeding member rotatable around a first rotational axis extended in a first direction and for feeding the developer along the first direction, said first feeding member being provided in the first feeding path and including a drive transmitting portion;

a second feeding member rotatable around a second rotational axis extended in a second direction crossing the first direction and for feeding the developer along the second direction, said second feeding member being provided in the second feeding path and including a drive receiving portion and a helical blade as a feeding portion, and

a bearing portion for rotatably supporting said second feeding member, said bearing portion being configured to support said second feeding member in a portion between said drive receiving portion and said helical blade,

wherein said drive transmitting portion and said drive receiving portion engage with each other so as to enable delivery of the developer from said first feeding member to said second feeding member while transmitting a driving force of said first feeding member to said second feeding member, and

wherein as seen in a third direction perpendicular to each of the first rotational axis and the second rotational axis, said drive transmitting portion and said drive receiving portion engage with each other on one side of the second rotational axis, and said bearing portion is disposed on the other side of the second rotational axis with respect to the first direction.

15. A feeding device according to claim 14, wherein said first feeding member feeds the developer in a feeding direction along the first direction,

wherein said bearing portion includes a first portion for preventing movement of said second feeding member in the first direction, and

wherein said first portion is disposed in a downstream side of said second rotational axis with respect to the feeding direction.

16. A feeding device according to claim 14, further comprising a wall surface crossing each of the first direction and the second direction.

17. A feeding device according to claim 16, wherein said first feeding member feeds the developer in a feeding direction along the first direction, and

wherein said bearing portion includes a first portion for preventing movement of said second feeding member in the first direction, said first portion disposed in a downstream side of the second rotational axis with respect to the feeding direction, and the wall surface is disposed in an upstream side of the second rotational axis with respect to the feeding direction.

18. A feeding device according to claim 17, wherein with respect to the second direction, a position of the wall surface and a position of said bearing portion at least partly overlap with each other.

19. A feeding device according to claim 18, wherein with respect to the first direction, the position of the wall surface and a position of said drive transmitting portion at least partly overlap with each other.

20. A feeding device according to claim 14, wherein with respect to a feeding direction of said second feeding member, said drive transmitting portion and said drive receiving portion engage with each other in a downstream side of the first rotational axis.

21. A cartridge comprising:

a photosensitive member; and

the feeding device according to claim 14,

wherein the first feeding member and the second feeding member are configured to feed residual developer removed from said photosensitive member.