| 摘要 |
PROBLEM TO BE SOLVED: To provide a resistance measuring method capable of discriminating an excellent initial resistance characteristic by which uneven density is not generated on an output image in a conductive roller for an electrophotographic apparatus. SOLUTION: Frequency analysis is applied to respective current fluctuations acquired by simultaneously measuring currents in a single electrode on an optional axial direction position of the roller or a plurality of electrodes, 2 to 7 electrodes, divided in the axial direction of the roller. In the measuring method, hardware processing or Fourier transformation is applied to each current measured by rotating the roller of a radius (r) at a period of 1 sec, and when it is defined that the current value is I, the total sum of all frequency components in the current fluctuations is S1 and the sum of components of frequency 3r/8 to 3r/4 Hz is S2, inequality 1 is used. COPYRIGHT: (C)2005,JPO&NCIPI
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