Method for forming an image

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

Reexamination Certificate

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Details

C430S126200, C399S281000, C399S284000, C399S279000, C399S286000

Reexamination Certificate

active

07067225

ABSTRACT:
To provide an method for forming an image capable of effectively suppressing a toner from deteriorating and also capable of keeping the quality of an image for a long period of time, even when the method is applied to an apparatus with as high process speed. The prevent invention provides an method for forming an image, in which a developing unit is used, which includes: a rotatable cylindrical toner bearing member having a diameter represented as Rd (mm); and a rotatable cylindrical toner-supplying member having a diameter Rs (mm), the diameters Rd and Rs satisfying the following relational expression (1):in-line-formulae description="In-line Formulae" end="lead"?1≦Rs−Rd≦10  (1)in-line-formulae description="In-line Formulae" end="tail"?and in which the nonmagnetic one-component toner having an degree of aggregation of 5 to 30% and an electric resistivity of 1×1014to 1×1018Ω·cm at an electric field of 1×104V/cm is used.

REFERENCES:
patent: 5640651 (1997-06-01), Katoh et al.
patent: 2002/0106575 (2002-08-01), Akashi et al.
patent: 2004/0165914 (2004-08-01), Haraguchi et al.
patent: 06130792 (1994-05-01), None

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