Consumables management system

【Task】 When the communication with the management apparatus becomes impossible even, an image forming apparatus capable of performing a prediction of exhaustion time of consumables, provides a consumable management program. A And it supplies the state detecting unit 113 for detecting the state of consumables, consumables status detecting unit 113 predicts the consumption time of the consumable on the basis of the state detected depleted timing prediction unit 117, consumable status detecting unit 113 detects consumables information transmission unit 114 that transmits the state to the management apparatus 2 as a consumable item information, consumable information received consumables information consumable information transmitting unit 114 sends back the management device 2 according to the transmitted information on consumables receiving unit 115, the management apparatus communication state monitoring unit 111 that monitors whether communication with 2, wasting time and notifies the consumption time of a consumable notification unit 118, supplies the information receiving unit 115 in the case which can communicate with the management apparatus 2 There provides notifications based on the received expendable information management device 2 and supplies timing as wasting time estimating unit 117 performs the notification based on the depletion period which is expected if a incommunicable notifying unit 118 a switching system To distribution consumables management control unit 112 to the image forming apparatus. .The