| 摘要 |
PROBLEM TO BE SOLVED: To prevent the breakage of a waste toner unit and overflow of the waste toner by accurately detecting that the waste toner unit is still full of waste toner. SOLUTION: In this image forming device, it is discriminated whether a signal S14 from a LED light receiving part 116 is L during printing (S103), and clears the waste toner full count and the waste toner full preliminary detection flag (S104). When the signal S14 is L, one is added to the waste toner full counter (S105). Subsequently, the value of the waste toner full counter and the waste toner full preliminary informing level (S106) is compared, and in the case of exceeding a specified level, the waste toner full preliminary detection flag is turned ON (S107). The value of the waste toner full counter and the waste toner full informing level (S108) is further compared, and, in the case when the counter exceeds a specific level (S109), waste toner full notification is issued. |
