Invention Grant
US08014708B2 Belt member, transfer unit incorporating same, image forming apparatus incorporating same, and method of evaluating same 有权
带构件,结合其的转移单元,结合其的图像形成装置及其评估方法

Belt member, transfer unit incorporating same, image forming apparatus incorporating same, and method of evaluating same
Abstract:
A multi-layer endless belt member with a high-resistance surface layer for use in an image forming apparatus. A volume resistivity thereof ranges from approximately 8.0 to approximately 11.0 in log [Ω·cm]. An amount of resistivity change of a first surface thereof is greater than an amount of resistivity change of a second surface thereof by 0.05 or greater in log [Ω/square], where the amount of resistivity change of the first surface indicates a difference between surface resistivity values measured after a given voltage is applied for 1 second and for 100 seconds on the first surface thereof and the amount of resistivity change of the second surface indicates a difference between surface resistivity values measured after a given voltage is applied for 1 second and for 100 seconds on the second surface thereof.
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