Patent ID: 8699893
Filing Date: 2014-04-15
Classification: G03G

Abstract:
1. An image forming apparatus having a fixing part that fixes a toner image onto a recording medium by heating it, comprising: an ambient temperature predicting part configured to predict an ambient temperature from a fixing temperature rising period of time that is a period of time taken until the fixing part reaches a certain temperature; a member temperature predicting part configured to predict a member temperature of a member from the predicted ambient temperature and an operating state of the image forming apparatus; a cumulative-used-service-lifetime calculating part configured to calculate a current cumulative used service lifetime from the predicted member temperature, the operating state of the image forming apparatus and an immediately preceding cumulative used service lifetime of the member; a remaining lifetime calculating part configured to calculate a remaining lifetime by subtracting the calculated current cumulative used service lifetime from a service lifetime of the member; and a reporting part configured to report the remaining lifetime.