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:
Dec. 16, 2014
Filed:
Apr. 16, 2013
Tokai Rubber Industries, Ltd., Komaki, JP;
Yosuke Hayashi, Komaki, JP;
Naoki Yamaguchi, Komaki, JP;
Atsushi Ozaki, Komaki, JP;
Kadai Takeyama, Komaki, JP;
Tokai Rubber Industries, Ltd., Komaki-shi, JP;
Abstract
Provided is a developing roll for use in an electrophotographic machine capable of preventing an ion conductive agent from blooming and retaining long-term charge decay characteristics. The roll () includes a shaft (), an elastomeric layer () and a surface layer (), wherein the surface layer contains a composition containing an (A) ingredient defining a binder resin having a functional group reactive with an alkoxy silyl group in a (B) ingredient, and the (B) ingredient defining an ion conductive agent containing a cation having a chemical structure represented by R1-N-R2-Si(OR3), where R1: a cyclic organic group or a linear organic group, R2: a group containing at least (CH2)n, n representing an integer number, and R3: an alkyl group, wherein the cation is bound with the (A) ingredient, and wherein the (B) ingredient is 0.10 to 3 parts by mass with respect to 100 parts by mass of the (A) ingredient.