| US 7,580,659 B2 | ||
| Developing device and image forming apparatus | ||
| Shigeo Miyabe, Numazu (Japan); Masaaki Sato, Suntoh-gun (Japan); and Osamu Anan, Susono (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Oct. 27, 2006, as Appl. No. 11/553,865. | ||
| Claims priority of application No. 2005-317209 (JP), filed on Oct. 31, 2005. | ||
| Prior Publication US 2007/0098461 A1, May 03, 2007 | ||
| Int. Cl. G03G 15/08 (2006.01) | ||
| U.S. Cl. 399—285 | 24 Claims |
| 1. A developing device comprising:
a developer carrier configured to carry and convey a developer, the developer carrier, to which an alternating-current bias
is applied, developing an electrostatic image formed on an image carrier with the developer, the developer carrier being disposed
so as to face the image carrier;
a development frame configured to support the developer carrier;
a developer flying regulation member including a first end supported by the development frame and a second end disposed within
a developing area between the developer carrier and the image carrier; and
a development-noise regulation member including a third end supported by the development frame and a fourth end being in contact
with the image carrier, the fourth end being located upstream of the second end of the developer flying regulation member
and downstream of a position on the image carrier where the electrostatic image is formed in a direction of movement of a
surface of the image carrier, the development-noise regulation member having a natural frequency being smaller than a frequency
of an alternating-current bias.
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