| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner supply roller that prevents insufficient image density. SOLUTION: When the number of cells that are open in the circumferential face 2a of an elastic layer 2 is 100%, the number of cells having opening diameter of 300μm or greater is 10% or more, and the number of cells having opening diameter of 100μm or smaller is 10% or more. COPYRIGHT: (C)2009,JPO&INPIT |
