IP Library Granted Patent US 7,348,058
Granted Patent B2
US 7,348,058 · App. 10/795,419 · Granted Mar 25, 2008

Electrically conductive roll

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Quick Facts
Patent No.
US 7,348,058
App. No.
10/795,419
Granted
Mar 25, 2008
Kind
B2
Abstract

An inexpensive electrically conductive roll which is easily produced compared with conventional rolls, offers stable adhesion at the interface with time lapse after mixing adhesive components, which is not affected by environment during storage of the core after being applied with an adhesive. The electrically conductive roll comprises a shaft 11 , an adhesive layer 12 formed on an outer periphery of the shaft and a base rubber layer 13 formed on an outer periphery of the adhesive layer, wherein the base rubber layer includes an addition reaction curing silicone elastomer and the adhesive layer includes a one part epoxy adhesive.

Claims (2)

1. An electrically conductive roll to be used as a developing roll, a charging roll or a transfer roll, the electrically conductive roll comprising a shaft, an adhesive layer formed on an outer periphery of the shaft and a base rubber layer formed on an outer periphery of the adhesive layer, wherein the base rubber layer includes an addition reaction curing silicone elastomer having a hydrosilyl group and the adhesive layer includes a one part bisphenol A epoxy adhesive.

2. An electrically conductive roll according to claim 1 , wherein the one part bisphenol A epoxy adhesive does not contain a silane coupling agent.

Assignments (2)
CHANGE OF NAME Recorded Oct 20, 2014
From: TOKAI RUBBER INDUSTRIES, LTD.
To: SUMITOMO RIKO COMPANY LIMITED
Reel/Frame 034016/0613 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 9, 2004
From: HIRAMATSU, HIROSHIGE; OKUDA, HIROFUMI; SUZUKI, SATOSHI
To: TOKAI RUBBER INDUSTRIES, LTD.
Reel/Frame 015058/0322 →