Toner, developer, image forming method, image forming...

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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C430S110300

Reexamination Certificate

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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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U.S. Appl. No. 10/848,062, filed May 19, 2004, Murakami et al.

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