| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-durability cleaning blade member having excellent wear resistance in a usable temperature area and prevented from being chipped, while maintaining cleaning performance. <P>SOLUTION: The cleaning blade member is formed of a castable polyurethane member produced through curing and molding a polyurethane composition containing at least a polyol and an isocyanate compound, wherein the polyurethane member contains hard segment aggregate whose outside diameter is ≥0.5 μm and <12 μm, and when the outside diameter of the hard segment is defined as a(μm) and the number of the hard segments is defined as b, a×b per 1,000 μm<SP>2</SP>is ≥70 and <1,050. <P>COPYRIGHT: (C)2010,JPO&INPIT |
