Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-10-16

2007-10-16

Tran, Hoan (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S049000

Reexamination Certificate

active

11156798

ABSTRACT:
An image forming apparatus includes an image density control feature based on a result detected by an image density detection portion, wherea developer amount per 10 mm in a longitudinal direction of a first chamber of a developer carrying member is Y (g),a developer carrying velocity in the longitudinal direction inside the first chamber is VD(mm/sec),a toner carrying amount per unit area on an image bearing member when forming a maximum density is M (mg/cm2),a surface movement velocity of the image bearing member is Vp(mm/sec), anda distance from a position furthest downstream in a developer conveyance direction in a maximum area in which development is possible on the developer carrying member to a predetermined detection position in the maximum area in the longitudinal direction is X (mm),and the following relation is satisfied:in-line-formulae description="In-line Formulae" end="lead"?X≦(45×Y×VD)/(M×Vp).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 6501916 (2002-12-01), Suzuki
patent: 6775489 (2004-08-01), Tsuruya et al.
patent: 6975338 (2005-12-01), Hirai et al.
patent: 7043171 (2006-05-01), Ogata
patent: 8-220870 (1996-08-01), None

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