Electroconductive roller

Details Electroconductive roller Electroconductive roller

2005-03-08

2008-11-04

Bryant, David P (Department: 3726)

Roll or roller

Concentric layered annulus

Specific composition

C492S059000, C492S053000, C428S036500

Reexamination Certificate

active

07445588

ABSTRACT:
An electroconductive roller including an electroconductive cellular material layer, comprised of a polyurethane composition, which has an average foamed cell diameter not more than 100 μm and a variation ΔD of the foamed cell diameter not more than 50 μm. The electroconductive roller has a hardness variation ΔHs not more than 8 degrees and a circumferential non-uniformity index RMAX/RMINin an electric resistance thereof not more than 1.3. The electroconductive cellular material layer is made of a thermosetting one-part polyurethane composition. And the polyurethane composition is cured instantly at a temperature not less than a thermosetting critical temperature for curing thereof, after it is foamed by a mechanical foaming method.

REFERENCES:
patent: 6303215 (2001-10-01), Sonobe et al.
patent: 6915570 (2005-07-01), Ohgoshi et al.
patent: 2003/0096917 (2003-05-01), Hattori et al.
patent: 2004/0024166 (2004-02-01), Hattori et al.
patent: 0 684 613 (1995-11-01), None
patent: 2577884 (1996-11-01), None
patent: 2001-341139 (2001-12-01), None
patent: 2003-105119 (2003-04-01), None
“Plastic Foam Handbook”, Nikkan Kogyo Newspaper Ltd., Feb. 1973 (First edition).

Affiliated with

Also associated with

Rating

Electroconductive roller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electroconductive roller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electroconductive roller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4048419