| 摘要 |
A toner supplement control device incorporated in an image forming apparatus for executing the supplement of a fresh toner to a developing unit only when a particular document image process mode is under way. The particular process mode is any one of a document image receive mode, a document image record mode, a document image copy mode, a supervisory report record mode, etc. In the event of initialization of the apparatus, during ordinary recording operation, and when a cleaner and toner magazine (CTM) is to be replaced, whether or not a fresh toner is present in the CTM is determined on the basis of the condition of a fresh toner existing in a developing unit.
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