Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2008-01-15
2008-01-15
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S110300
Reexamination Certificate
active
07318990
ABSTRACT:
A toner includes toner particles which have a binder resin and a colorant. The toner has a weight average particle diameter of from 4 to 7 μm and includes toner particles having a circle equivalent diameter of from 0.6 to 2.0 μm in an amount not greater than 5% by quantity, toner particles having a particle diameter of from 3.17 to 4.00 μm in an amount of from 10 to 40% by quantity, toner particles having a diameter of from 4.00 to 5.04 μm in an amount of from 20 to 40% by quantity, and toner particles having a diameter not less than 12.7 μm in an amount of from 0 to 1.0% by weight. The toner satisfies the following relationship: 1.04≦D4/D1≦1.30, wherein D4represents the weight average particle diameter and D1represents a number average particle diameter of the toner.
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Makino Nobuyasu
Murakami Fumitoshi
Nakada Masakazu
Suganuma Tohru
Le Hoa Van
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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