Title:
帯電方法
Document Type and Number:
Japanese Patent JP4246213
Kind Code:
B2
Abstract:
In an image forming apparatus in which a charging roller charges a photoreceptor which is rotating at high speed, damages of the photoreceptor and the charging roller are prevented. The photoreceptor included in an electrophotographic image forming apparatus is rotated at high speed so that a speed of a peripheral surface of the photoreceptor is 225 mm per second or more. Then, the charging roller is rotated by contacting the photoreceptor, so as to charge the photoreceptor. Here, a surface pressure M of a contact portion between the photoreceptor and the charging roller is set to more than 0.8 g/mm2 but not more than 3.5 g/mm2.
Inventors:
Tohru Sakuwa
Koji Shinkawa
Toshiaki Kagawa
Koji Shinkawa
Toshiaki Kagawa
Application Number:
JP2006127051A
Publication Date:
April 02, 2009
Filing Date:
April 28, 2006
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G03G15/02
Domestic Patent References:
| JP11231611A | ||||
| JP2005164626A | ||||
| JP2005164873A | ||||
| JP6011948A | ||||
| JP2005107365A | ||||
| JP8234538A | ||||
| JP2002148905A | ||||
| JP2000066487A |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office
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