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 (JP)
UMEDA MASANARI (JP)
HAYASHI YOUSUKE (JP)
UMEDA MASANARI (JP)
HAYASHI YOUSUKE (JP)
Application Number:
PCT/JP2011/052235
Publication Date:
August 11, 2011
Filing Date:
February 03, 2011
Export Citation:
Assignee:
TOKAI RUBBER IND LTD (JP)
EGAWA SHUICHI (JP)
UMEDA MASANARI (JP)
HAYASHI YOUSUKE (JP)
EGAWA SHUICHI (JP)
UMEDA MASANARI (JP)
HAYASHI YOUSUKE (JP)
International Classes:
G03G15/08; F16C13/00
Foreign References:
| JP2009186658A | 2009-08-20 | |||
| JP2009180950A | 2009-08-13 | |||
| JP2010032692A | 2010-02-12 |
Attorney, Agent or Firm:
UENO, NOBORU (JP)
Ueno 登 (JP)
Ueno 登 (JP)
Download PDF:
Claims:
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