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US 8,137,885 B2Granted
Hybrid toner and method of preparing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsIn Kim, Sang-deok Kim, Kyung-yol Yon
Life of this patent
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Abstract
A hybrid toner includes micro cylinders, cores inserted into the micro cylinders, and an external addition layer covering the micro cylinders to which the cores are inserted. The hybrid toner prevents a toner blocking phenomenon, image contamination, and low storage stability which occur due to dispersion of wax and colorants to an outer surface of the toner.
Claims14
A hybrid toner, comprising:
- a micro cylinder;
- a core inserted into the micro cylinder;
- and
- an external addition layer covering the micro cylinder into which the core is inserted.
1 more element
A method of preparing a hybrid toner, the method comprising:
- melting and mixing a vinyl-based resin and a colorant to prepare a micro cylinder forming molten product;
- melting and mixing a polyester-based resin, wax, a colorant, and a charge controller to prepare a core forming molten product which is to be inserted to micro cylinders to be formed from the micro cylinder forming molten product;
- extruding the micro cylinder forming molten product and the core forming molten product through a double extrusion micro-capillary die at a same time to prepare a core-micro cylinder in which a core is inserted in the micro cylinder;
- milling the core-micro cylinder;
- and
- covering the milled core-micro cylinder with an external addition layer comprising silica, metal oxide, and a polymer bead.
3 more elements
An imaging method, comprising:
- forming a viable image by attaching a hybrid toner to a surface of a photoreceptor on which a latent image is formed;
- and
- transferring the visible image onto a transferring sheet;
- and
- wherein the hybrid toner includes a micro cylinder, a core inserted into the micro cylinder and an external addition layer covering the micro cylinder into which the core is inserted.
2 more elements
An imaging apparatus comprising:
- an organic photoreceptor;
- a unit to charge a surface of the organic photoreceptor;
- a unit to form a latent image on the surface of the organic photoreceptor;
- a unit to receive a hybrid toner;
- a unit to supply the hybrid toner to develop the latent image formed on the surface of the organic photoreceptor so as to develop the toner image;
- and
- a unit to transfer the toner image from the surface of the photoreceptor to the transferring sheet;
- and
- wherein the hybrid toner includes a micro cylinder, a core inserted into the micro cylinder and an external addition layer covering the micro cylinder into which the core is inserted.
6 more elements
A method to prepare a hybrid toner, the method comprising:
- extruding a core through a double extrusion capillary die by a first extruder;
- and
- extruding a micro cylinder through the double extrusion capillary die by a second extruder at a same time as the extruding of the core so that the core is disposed in the micro cylinder.
Dependencies are inferred from the claim text.