| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for inspecting a toner carrier for excellently dealing with a color image and reliably yielding a high-quality image by preventing image defects such as a spot, density nonuniformity and further white image fogging from occurring to the utmost. <P>SOLUTION: It is inspected whether the electric resistance value of the toner carrier such as a developing roller exhibits a specified value within 10<SP>4</SP>to 10<SP>10</SP>Ωby measuring the electric resistance value when a voltage of 100 V is applied. It is further inspected whether the maximum value of the surface potential of the toner carrier 0.35 seconds after finishing an electrifying operation is ≤90 V in the case of applying a voltage of 8 kV to a corona discharger arranged at a distance of 1 mm from the surface thereof and generating corona discharge so as to electrify the surface thereof. <P>COPYRIGHT: (C)2003,JPO |
