| US 7,346,300 B2 | ||
| Developing apparatus | ||
| Satoru Inami, Numazu (Japan); Daisuke Baba, Mishima (Japan); and Masahito Kato, Susono (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Oct. 05, 2005, as Appl. No. 11/242,880. | ||
| Claims priority of application No. 2004-296756 (JP), filed on Oct. 08, 2004. | ||
| Prior Publication US 2006/0078356 A1, Apr. 13, 2006 | ||
| Int. Cl. G03G 15/09 (2006.01) | ||
| U.S. Cl. 399—274 [399/284; 399/286] | 6 Claims |
| 1. A developing apparatus comprising:
a developer carrying member, which carries developer including toner;
a developer regulating member, which regulates a layer thickness of the developer carried on said developer carrying member;
and
a lubricant provided in a portion of contact between said developer carrying member and said developer regulating member with
the developer being not present on said developer carrying member, said lubricant including a first polymer particle, which
is of a spherical shape having an average degree of circularity of 0.90 or greater and is of a polarity opposite to a charging
polarity of the toner, and a second polymer particle, which is of a scalelike shape and is of the same polarity as the charging
polarity of the toner.
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