Image forming apparatus and method of calculating toner...

Details Image forming apparatus and method of calculating toner... Image forming apparatus and method of calculating toner...

2006-03-14

2006-03-14

Lee, Susan (Department: 2852)

Electrophotography

Diagnostics

Consumable

Reexamination Certificate

active

07013093

ABSTRACT:
During an ordinary image forming operation, the number of print dots is counted based on an image signal, and a toner consumption amount is calculated from the result. Meanwhile, during an operation under a non-ordinary mode which is different from the ordinary image forming operation, a test pattern offset value Totn is extracted as a toner consumption amount which corresponds to the operation (Step S141). The test pattern offset value Totn and a drive offset value Todn, which corresponds to the amount of toner which is scattered into inside an apparatus, are subtracted from a remaining toner amount Tr which is stored in a memory, whereby a remaining toner amount of toner remaining in the developer4Y after the operation is calculated (Steps S142through S146).

REFERENCES:
patent: 5635972 (1997-06-01), Maruyama et al.
patent: 6134396 (2000-10-01), Kaneko
patent: 6374064 (2002-04-01), Budnik et al.
patent: 6-138769 (1994-05-01), None
patent: 2002-174929 (2002-06-01), None

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