Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2011-08-02
2011-08-02
Chapman, Mark A (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S137150, C430S137170, C430S109100
Reexamination Certificate
active
07989134
ABSTRACT:
To provide a toner manufacturing method including: dissolving or dispersing a toner material into an organic solvent to prepare a toner solution, the toner material containing at least an active hydrogen group-containing compound, polymer reactive with the active hydrogen group-containing compound, binder resin, releasing agent and coloring agent; emulsifying or dispersing the toner solution into an aqueous medium to prepare an emulsified dispersion; reacting the active hydrogen group-containing compound with the polymer reactive with the active hydrogen group-containing compound in the aqueous medium produce an adhesive base material in the form of particle; and removing the organic solvent, wherein time X (hour) from a point where the organic solvent starts to be removed to a point where the concentration of the organic solvent reaches less than 12% by mass and temperature T (° C.) of the emulsified dispersion at the time X satisfy the relationship 5{exp(−0.2X)+1}≦T≦50X−0.2.
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Office Action issued May 10, 2011, in Japanese Patent Application No. 2007-14623, filed Jan. 25, 2007.
Miyakawa Masashi
Usami Toshihiko
Chapman Mark A
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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