Patent ID: 7821665
Filing Date: 2010-10-26
Classification: G03G

Abstract:
1. An image forming device comprising: rewritable memory that stores firmware composed of a first firmware portion which is not to be overwritten and a second firmware portion which is to be overwritten; and a controller that performs print processing based on the second firmware portion stored in the memory, wherein, the image forming device is structured including a plurality of detachable, consumable units, each having a storage unit that stores a second firmware portion; and when it is judged that the second firmware portion stored in the memory is not normal, the controller selects, from among the consumable units set in the image forming device, the consumable unit having the storage unit storing the latest version of the second firmware portion and reads the second firmware portion from the storage unit in the consumable unit and overwrites the second firmware portion in the memory with that second firmware portion, based on the first firmware portion stored in the memory.