| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an annular body whose first region is more excellently detected over a long period of time, when the annular body is used in an image forming apparatus, as compared to a case when the annular body does not have the first region. <P>SOLUTION: The resin layer 101 of an endless belt 100 has a detection region 101A and a non-detection region 101B being two regions different in surface resistivity in the surface direction of the resin layer 101. The detection region 101A has a resin region 111A where conductive particles 112 are not present, a high density region 111B, and a rear surface region 111C in order from an outermost surface side in a thickness direction. The resin layer 201 of an endless belt 200 has a detection region 201A and a non-detection region 201B being two regions different in magnetic flux density in the surface direction of the resin layer 201. The detection region 201A has a resin region 211A where magnetic particles 212 are not present, a high density region 211B, and a rear surface region 211C in order from an outermost surface side in a thickness direction. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
