Patent ID: 6421137
Filing Date: 2002-07-16
Classification: G03G

Abstract:
A method of controlling an image forming apparatus that forms an image using a removable image-forming cartridge having a memory, comprising:a setting step of setting a write-in-progress flag before writing a data set to the said memory; a writing step of writing a data set to said memory after the write-in-progress flag has been set; a resetting step of resetting the write-in-progress flag after the data set has been written; a step of writing a plurality of data sets of identical content to said memory by repeating said setting step, said writing step and said resetting step; an evaluation step of evaluating validity of each of the data sets, which have been written to said memory, based upon states of the write-in-progress flags; and an updating step of updating a data set, which has been evaluated as being invalid, to content of another data set evaluated as being valid.