Title:
SEMICONDUCTOR ROLL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3401995
Kind Code:
B2
Abstract:
PURPOSE: To provide a semiconductor roll which has the decreased variation in resistance value in semiconductor region, has a stable resistance value and high dielectric strength and is decreased in variation among production lots by coating a conductive core material with a specific conductive elastic material.
CONSTITUTION: In the semiconductor roll 6 formed by coating the outer circumference of the conductive core material 11 with a foamed elastic material 12 having semiconductivity, the semiconductive foamed elastic material 12 is constituted by dispersing two kinds of carbon blacks varied in characteristics into a incompatible blend composed by mixing NBR(nitrilebutadiene rubber) and EPDM(ethylene propylene rubber). Two kinds of the carbon blacks varied in characteristics are formed by using the ketchen black, such as 'Ketchen Black EC (R)' (produced by LION AKUZO), and thermal black, such as 'FT.MT Carbon (R)' (produced by ASAHI CARBON). The mixing ratio of the ketchen black and the thermal black is preferably specified to 1:1 to 1:5.
Inventors:
Kentaro Ueishi
Riki Ando
Riki Ando
Application Number:
JP13785995A
Publication Date:
April 28, 2003
Filing Date:
June 05, 1995
Export Citation:
Assignee:
Fuji Xerox Co., Ltd
International Classes:
G03G15/02; F16C13/00; G03G15/16; (IPC1-7): G03G15/16; F16C13/00; G03G15/02
Domestic Patent References:
| JP8303449A | ||||
| JP1109376A |
Attorney, Agent or Firm:
Tomohiro Nakamura (2 outside)
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