| 摘要 |
PROBLEM TO BE SOLVED: To suppress drift (variation in a measurement value occurring with time). SOLUTION: A conductivity sensor has two electrodes 14 coming into contact with the developer of an automatic developing machine and a housing 13 for retaining the electrodes 14. A specific voltage is applied between the electrodes 14, a current value flowing between the electrodes 14 is detected, and conductivity in the developer is measured based on the current value. Both the electrodes 14 are made of a conductive resin. COPYRIGHT: (C)2004,JPO |
