Developing agent and method for producing the same

Details Developing agent and method for producing the same Developing agent and method for producing the same

2008-12-09

2010-12-14

Le, Hoa V (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Process of making developer composition

C430S137100

Reexamination Certificate

active

07851120

ABSTRACT:
The dispersion liquid including toner material particles is introduced into a mechanical shearing device including a heating unit, a mechanical shearing unit, and a cooling unit, heated to a temperature not lower than the glass transition temperature of the polyester resin under a condition that satisfies the following relationship (1), subjected to mechanical shearing, and thereafter cooled, whereby fine particles are obtained.in-line-formulae description="In-line Formulae" end="lead"?−2<log ((A+B)/C)<2  (1)in-line-formulae description="In-line Formulae" end="tail"?With the proviso that a volume of a portion in which the dispersion liquid flows in the heating unit and the mechanical shearing unit is expressed as A cc, a volume of a portion in which the dispersion liquid flows in the cooling unit is expressed as B cc, and a flow rate of the dispersion liquid is expressed as C cc/min.

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