Image forming apparatus and an image forming method

Details Image forming apparatus and an image forming method Image forming apparatus and an image forming method

2007-04-24

2007-04-24

Chen, Sophia S. (Department: 2852)

Electrophotography

Diagnostics

Unit or part identification

C399S013000, C399S027000, C399S227000

Reexamination Certificate

active

11067593

ABSTRACT:
Prior to execution of a printing operation and in parallel with a warm-up operation of the apparatus, a print preparatory operation is conducted only on selected cartridges of cartridges mounted to a developing unit, thereby bringing the cartridge into a printable state. Therefore, even if the residual amount of toner in one of the selected cartridges runs short, the printing operation is allowed to continue by switching this cartridge to the next selected cartridge.

REFERENCES:
patent: 6889024 (2005-05-01), Shiraki et al.
patent: 2004/0223787 (2004-11-01), Shinohara et al.
patent: 2005/0196181 (2005-09-01), Taguchi et al.
patent: 2005/0196182 (2005-09-01), Taguchi et al.
patent: 2002-351190 (2002-12-01), None
patent: 2003-215862 (2003-07-01), None

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