Abstract: A toner and a method of producing same. In one embodiment, the method includes the steps of forming an organic phase containing a resin, an organic solvent, a colorant, a charge control agent, and a phase change stabilizer, wherein the organic solvent is characterized in that the resin is soluble in the organic solvent and the organic solvent and water are at least partially miscible; forming an aqueous phase containing water, an anticoagulant, an accelerant, and optionally an auxiliary agent; mixing the aqueous phase with the organic phase to form a solution having resin colloidal microparticles formed and stably dispersed therein, whereby the resin colloidal microparticles aggregate, coalesce and solidify out into resin particles in the solution, meanwhile the organic solvent is removed from the resin particles by the aqueous phase; and curing the resin particles to obtain toner particles having shapes, diameters, and diameter distribution that are controllable.
Type:
Grant
Filed:
May 31, 2006
Date of Patent:
March 31, 2009
Assignee:
Sinonar Corporation
Inventors:
Ming-Huei Liu, Li-Chi Su, Cheng-Pang Ting, Chien-Chung Bi
Abstract: A toner and a method of producing same. In one embodiment, the method includes the steps of forming an organic phase containing a resin, an organic solvent, a colorant, a charge control agent, and a phase change stabilizer, wherein the organic solvent is characterized in that the resin is soluble in the organic solvent and the organic solvent and water are at least partially miscible; forming an aqueous phase containing water, an anticoagulant, an accelerant, and optionally an auxiliary agent; mixing the aqueous phase with the organic phase to form a solution having resin colloidal microparticles formed and stably dispersed therein, whereby the resin colloidal microparticles aggregate, coalesce and solidify out into resin particles in the solution, meanwhile the organic solvent is removed from the resin particles by the aqueous phase; and curing the resin particles to obtain toner particles having shapes, diameters, and diameter distribution that are controllable.
Type:
Application
Filed:
May 31, 2006
Publication date:
November 1, 2007
Applicant:
Sinonar Corporation
Inventors:
Ming-Huei Liu, Li-Chi Su, Cheng-Pang Ting, Chien-Chung Bi
Abstract: A family of photoreceptors for use in electrophotography are disclosed which contain a binary charge generation composition of oxytitanium phthalocyanine and copper phthalocyanine. The charge generation composition exhibits adjustable photosensitivity by adjusting a ratio between said oxytitanium phthalocyanine and said copper phthalocyanine. To optimize its performance, the charge generation composition is subject to an ammonia-modified complexation-mediated crystal transformation, and the resultant composition is characterized by Bragg diffraction angles (2.theta..+-.2.degree.) of 7.7, 9.4, 10.7, 13.3, 15.2, 15.7, 26.3, 27.4, and 28.4 degrees with respect to the CuK.alpha. characteristic X-ray wavelength at 1.54 .ANG. and absorption maxima centered around 615, 690, and 770 nm in the optical absorption spectrum.
Type:
Grant
Filed:
August 20, 1998
Date of Patent:
May 30, 2000
Assignee:
Sinonar Corporation
Inventors:
Chen-Jen Yang, Kuo-Chu Yeh, Tsong-Shin Jean, Kai-Der Ker