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

2007-02-13

2007-02-13

Lee, Susan (Department: 2852)

Electrophotography

Supplemental electrophotographic process

C399S012000, C399S226000, C399S227000

Reexamination Certificate

active

11069751

ABSTRACT:
Prior to execution of a printing operation, a print preparatory operation is conducted collectively on all developer cartridges mounted to a developing unit, thereby bringing all the developer cartridges into a printable state. Therefore, even if a residual amount of toner in the cartridge runs too low to continue the printing operation performed using one of plural cartridges mounted to the developing unit, the printing operation is allowed to continue by switching the cartridge to the next cartridge. Hence, a large volume of monochromatic prints may be produced in an efficient manner.

REFERENCES:
patent: 5243395 (1993-09-01), Koike et al.
patent: 6253035 (2001-06-01), Kawana et al.
patent: 2005/0196181 (2005-09-01), Taguchi et al.
patent: 2002-351190 (2002-12-01), None
patent: 2003-215862 (2003-07-01), None

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