| 摘要 |
PURPOSE:To enable a serviceman to easily recognize toner consumption in the market by providing a toner counter and calculating the toner consumption based on the counted number by the toner counter. CONSTITUTION:In a wet copying machine provided with a means 37 for detecting the toner concentration of developer, a no-toner detecting means and a counter for counting the number of copies, the toner counter for counting the number of copies from the time when the toner concentration attains a reference value to the time when the no-toner detecting means is actuated is provided. The toner consumption is calculated based on the counted number by the toner counter. Therefore, the number of copies per one bottle of toner is calculated, so that the serviceman can easily recognize the toner consumption in the market. |
