Method for producing positively chargeable toner

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition

Reexamination Certificate

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C430S108220

Reexamination Certificate

active

07960085

ABSTRACT:
A method for producing a positively chargeable toner is described. The method for producing a positively chargeable toner may include the steps of: mixing and emulsifying a charge-controlling resin having a positive polar group, an organic solvent and an aqueous medium to form an emulsion, and then removing the organic solvent from the emulsion, to thereby form a suspension of the charge-controlling resin having a positive polar group in the range of 5.0×10−5to 6.0×10−4mol/g; mixing the suspension of the charge-controlling agent with a suspension of toner base particles containing a binder resin and a colorant, to thereby form a mixture; and heating the mixture containing the suspension of the toner base particles and the suspension of the charge-controlling resin, to thereby fix the charge-controlling resin on the surfaces of the toner base particles.

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JP Office Action dtd Nov. 13, 2008, JP Appln. 2007-022048.

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