发明名称 |
DEVELOPING ROLLER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS |
摘要 |
To provide a developing roller which is suppressed in bleeding even in cases when the developing roller is stored in a high-temperature high-humidity environment for a long period of time and which is also suppressed in toner fusion to the surface in cases when images are repeatedly output under low temperature and low humidity conditions. A developing roller which comprises an axial core body, an elastic layer that is arranged on the outer circumference of the axial core body and a surface layer that is arranged on the outer circumference of the elastic layer. The developing roller is characterized in that: the surface layer contains carbon black and a polyester polyurethane resin that has a specific structure; and the storage modulus (E') of the surface layer as measured at a measurement temperature of 0°C and at a frequency of 10 Hz is 5-20 MPa (inclusive). |
申请公布号 |
EP2660658(A1) |
申请公布日期 |
2013.11.06 |
申请号 |
EP20110853486 |
申请日期 |
2011.11.28 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KURACHI, MASAHIRO;SATOH, HIDENORI;ISHIDA, KAZUTOSHI |
分类号 |
G03G15/08 |
主分类号 |
G03G15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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