Toner manufacturing method
First Claim
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1. A method of manufacturing porous toner particles comprising:
- providing a first emulsion of a first aqueous phase comprising a pore stabilizing hydrocolloid dispersed in an organic solution containing a polymer;
dispersing the first emulsion in a second aqueous phase;
shearing the second emulsion in the presence of a stabilizing agent to form droplets of the first emulsion in the second aqueous phase; and
evaporating the organic solution from the droplets to form porous toner particles of a controlled size and size distribution.
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Abstract
The present invention is a method of manufacturing toner particles that includes providing a first emulsion of a first aqueous phase comprising a pore stabilizing hydrocolloid dispersed in an organic solution containing a polymer. The first emulsion is dispersed in a second aqueous phase to form a second emulsion that is sheared in the presence of a stabilizing agent to form droplets of the first emulsion in the second aqueous phase. The organic solution is evaporated from the droplets to form porous toner particles.
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Citations
20 Claims
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1. A method of manufacturing porous toner particles comprising:
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providing a first emulsion of a first aqueous phase comprising a pore stabilizing hydrocolloid dispersed in an organic solution containing a polymer; dispersing the first emulsion in a second aqueous phase; shearing the second emulsion in the presence of a stabilizing agent to form droplets of the first emulsion in the second aqueous phase; and evaporating the organic solution from the droplets to form porous toner particles of a controlled size and size distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of manufacturing porous polymer particles comprising:
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providing a first emulsion of a first aqueous phase comprising a pore stabilizing hydrocolloid dispersed in an organic solution containing water-immiscible polymerizable monomers and a polymerization initiator; dispersing the first emulsion in a second aqueous phase; shearing the second emulsion in the presence of a stabilizing agent comprising colloidal silica to form droplets of the first emulsion in the second aqueous phase; polymerizing the monomers to form droplets of polymer particles; and evaporating the organic solution from the droplets of polymer particles to form porous polymer particles of a controlled size and size distribution. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method of manufacturing porous polymer particles comprising:
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providing a first emulsion of a first aqueous phase comprising a pore stabilizing hydrocolloid dispersed in a mixture of water-immiscible polymerizable monomers and a polymerization initiator; dispersing the first emulsion in a second aqueous phase; shearing the second emulsion in the presence of a stabilizing agent comprising colloidal silica to form droplets of the first emulsion in the second aqueous phase; and polymerizing the monomers to form droplets of porous polymer particles.
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Specification