Patent ID: 7664413
Filing Date: 2010-02-16
Classification: G03G

Abstract:
1. An image forming device including an electro-photographic image forming unit and an intermediate transfer belt, the electro-photographic image forming unit configured to form a toner image onto the intermediate transfer belt, and the intermediate transfer belt configured to transfer the toner image onto a transfer medium, the image forming device comprising: a toner pattern forming unit that forms a first toner pattern and a second toner pattern downstream of the first toner pattern along a direction of advance of the intermediate transfer belt on the intermediate transfer belt, the first toner pattern including color patches of which a color density gradually differs so that a fluctuation of a toner supplying density can be detected by a sensor for a feedback adjustment of the fluctuation, and the second toner pattern for preventing a cleaning blade from being twisted by a friction from the intermediate transfer belt, when scrubbing, due to a toner-lubricating function thereof so as to maintain a cleaning ability of the cleaning blade.