Title:
DEVELOPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/079860
Kind Code:
A1
Abstract:
This developing device is provided with: a developing sleeve which has a disc shape; a restriction member 25 which is disposed to face the developing sleeve, has magnetism, is curved in a direction protruding toward the developing sleeve with respect to a rotation direction D2 of the developing sleeve, and restricts the amount of a developing agent contained in the developing sleeve; and a magnet roller 24m which is disposed inside the developing sleeve. The distribution 60 of the magnetic flux density of a restricting magnetic pole N1 has: a first maximal part 61 which is disposed on the upstream side of the rotation direction D2 from the nearest position P1 of the magnet roller 24m to the restriction member 25; a second maximal part 62 which is disposed on the downstream side of the rotation direction D2 from the nearest position G1; and a minimal part 63 which is disposed between the first maximal part 61 and the second maximal part 62.
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Inventors:
SHIGEHIRO KOJI (JP)
Application Number:
PCT/JP2017/039844
Publication Date:
May 03, 2018
Filing Date:
October 27, 2017
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
G03G15/09; G03G15/08
Foreign References:
| JPH04350875A | 1992-12-04 | |||
| JP2001272862A | 2001-10-05 | |||
| JP2015145994A | 2015-08-13 | |||
| JP2000338783A | 2000-12-08 |
Attorney, Agent or Firm:
YAMADA, Ryuichi (JP)
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