Nonmagnetic one component developer and developing method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6649315
SERIAL NO

09763564

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A non-magnetic one-component developer comprising a substantially spherical polymerized toner which contains at least a binder resin and a colorant and has features that the volume average particle diameter is 5 to 10 .mu.m, the proportion of particles having a particle diameter of at most 5 .mu.m is at most 25% by number, the proportion of particles having a particle diameter of at least, 16 .mu.m is at most 2% by volume, the standard deviation of the number particle diameter distribution is at most 1.8, and the spheroidicity represented by a ratio (dl/ds) of a length (dl) to a breadth (ds) in a particle is 1.0 to 1.3, and suitable for use in a cleaning system concurrent with development, and a developing method according to thee cleaning system concurrent with development making use of the non-magnetic one-component developer.

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Patent Owner(s)

Patent OwnerAddress
NIPPON ZEON CO LTDTOKYO JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takasaki, Takahiro Kanagawa, JP 9 84

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