Title:
導電性ロールの検査方法
Document Type and Number:
Japanese Patent JP4208096
Kind Code:
B2
Abstract:
To provide a conductive roller which does not cause defective images with, for example, black lines, which would otherwise be caused by current leakage due to aggregation of carbon black particles or a similar phenomenon, and a method for inspecting the roller. The conductive roller having a metallic core and at least one rubber elastic layer provided on the outer peripheral surface of the core, the rubber elastic layer being formed from a conductive rubber which has ion conductivity and which contains carbon black micropowder, characterized in that said rubber elastic layer satisfies the relationship represented by the following formula: ¸ max / ¸ min ‰ 5 ,
wherein ¸ max represents the maximum value of phase difference ¸ as measured upon application of an AC voltage of 1.0 V within a frequency range of 100 mHz to 10 kHz, and ¸ min represents the minimum value of phase difference ¸ as measured under the same conditions.
Inventors:
Mountain saki Masashi
Shinobu Hasegawa
Shinobu Hasegawa
Application Number:
JP2007508250A
Publication Date:
January 14, 2009
Filing Date:
March 20, 2006
Export Citation:
Assignee:
Shinji Tech Co., Ltd.
International Classes:
G03G15/02; G03G15/00
Domestic Patent References:
| JP2004191961A | ||||
| JP58160857A | ||||
| JP2005049852A |
Attorney, Agent or Firm:
Hiroyuki Kurihara
Muranaka
Muranaka