Developing device, image forming apparatus, and process...

Details Developing device, image forming apparatus, and process... Developing device, image forming apparatus, and process...

2006-04-25

2006-04-25

Tran, Hoan (Department: 2852)

Electrophotography

Image formation

Development

C399S111000, C399S270000

Reexamination Certificate

active

07035575

ABSTRACT:
A developing device configured such that an amount of weakly charged toner in a two-component developer passing through an opening in the device per unit time is not greater than 200 g·mm/min, wherein the amount of weakly charged toner is expressed by an equation, which isthe⁢⁢amount⁢⁢of⁢⁢weakly⁢⁢charged⁢⁢toner⁢[g·mm⁢/⁢min]=total⁢⁢amountof⁢⁢the⁢⁢two⁢-⁢component⁢⁢developer⁢⁢to⁢⁢be⁢⁢drawn⁢[g⁢/⁢min]×lengthof⁢⁢the⁢⁢opening⁢[mm]×a⁢⁢concentration⁢⁢of⁢⁢toner⁢[wt⁢⁢%]×percentage⁢⁢of⁢⁢weakly⁢⁢charged⁢⁢toner⁢[%].

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