The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2007
Filed:
Nov. 24, 2004
Yuji Sakurai, Susono, JP;
Akihiko Nakazawa, Shizuoka-ken, JP;
Atsushi Tanaka, Susono, JP;
Hidekazu Matsuda, Numazu, JP;
Takashi Kusaba, Shizuoka-ken, JP;
Yuji Sakurai, Susono, JP;
Akihiko Nakazawa, Shizuoka-ken, JP;
Atsushi Tanaka, Susono, JP;
Hidekazu Matsuda, Numazu, JP;
Takashi Kusaba, Shizuoka-ken, JP;
Canon Kabushiki Kaisha, Ohta-ku, Tokyo, JP;
Abstract
In an electrophotographic endless belt having a resin layer formed of a resin composition containing a polyamide, the resin composition further contains a copolymer obtained by copolymerization of an olefin and an oxygen-containing heterocyclic compound, a curve (T-logη curve) showing the relationship between temperature T (° C.) and common logarithm logη of melt viscosity η (Pa·s), of the resin composition has, in the range of logη of from log1,000 to log8,000, a gently inclined region the inclination Δ logη/ΔT of which is from −0.02 to 0, and the gently inclined region has a temperature range of 10° C. or more, and the resin layer has a thickness the maximum thickness of which is 115% or less of the average value of the thickness of the resin layer and the minimum thickness of which is 85% or more of the average value of the thickness of the resin layer. Also disclosed is a process for producing the above electrophotographic endless belt.