| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for automatically measuring the nip width of a cleaning brush to evaluate the cleaning performance of the cleaning brush. SOLUTION: In this method, the nip width (contact area) 115 between the brush 100 and a photoreceptor 10 is automatically measured by using an electrostatic voltmeter or an electronic toner area range sensor 120. In such a case, a nip width measured value is converted into diagnosis information by using a software algorithm or a similar converting method. The diagnosis information is used to warn a field engineer that the life of the brush 100 ends, to adjust the bias of the cleaning brush in order to perform cleaning better, to predict the exchange time of the brush 100, or to correct the interference(BPI) of the brush 100 and the photoreceptor with respect to the insufficient or excessive contact of the brush 100 in various ways such as a diagnostic tool, etc. |
