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Patent Searching and Data


Title:
DEVELOPMENT ROLL FOR ELECTROPHOTOGRAPHIC EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2011/096471
Kind Code:
A1
Abstract:
Provided is a development roll for electrophotographic equipment with which it is possible to prevent damage to convex sections formed in the surface of a rubber elastic layer by mold transfer, while retaining excellent deliverability of a toner over a long period of time. The development roll comprises (A) a thermoplastic urethane having a number-average molecular weight within a range of 50,000 to 200,000; (B) a polyol having a number-average molecular weight within a range of 500 to 4,000; and (C) a curing agent. A coating layer (16) is formed around the outside of a rubber elastic layer (14) using a coating material wherein the mass percentages a through c of the components (A) through (C) satisfy the correlations of a + b + c = 100, 40 ≤ a ≤ 75, 5 ≤ b ≤ 20, and 20 ≤ c.

Inventors:
EGAWA, Shuichi (1, Higashi 3-chome, Komaki-sh, Aichi 50, 〒4858550, JP)
江川 秀一 (〒50 愛知県小牧市東三丁目1番地 東海ゴム工業株式会社内 Aichi, 〒4858550, JP)
UMEDA, Masanari (1, Higashi 3-chome, Komaki-sh, Aichi 50, 〒4858550, JP)
Application Number:
JP2011/052235
Publication Date:
August 11, 2011
Filing Date:
February 03, 2011
Export Citation:
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Assignee:
TOKAI RUBBER INDUSTRIES, LTD. (1 Higashi 3-chome, Komaki-shi Aichi, 50, 〒4858550, JP)
東海ゴム工業株式会社 (〒50 愛知県小牧市東三丁目1番地 Aichi, 〒4858550, JP)
EGAWA, Shuichi (1, Higashi 3-chome, Komaki-sh, Aichi 50, 〒4858550, JP)
江川 秀一 (〒50 愛知県小牧市東三丁目1番地 東海ゴム工業株式会社内 Aichi, 〒4858550, JP)
International Classes:
G03G15/08; F16C13/00
Attorney, Agent or Firm:
UENO, Noboru (KS Iseya Building 8th Floor, 21-23 Sakae 3-chome, Naka-ku, Nagoya-sh, Aichi 08, 〒4600008, JP)
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Claims: