Toner and process of preparing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsIn KIM, Ki-won Seok, Kyung-yol Yon
Life of this patent
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Abstract
A toner includes a core containing a binder resin, wax, and a colorant, and an external additive layer coating the core, wherein the core is prepared such that it is extruded and extended to have a fiber phase, and is pulverized. The toner has an improved fixing ability to allow an electrostatic image to be fixed at a low temperature while having an excellent durability and an improved storage stability, while exhibiting reduced toner blocking and offset phenomena.
Claims21
A toner comprising:
- a core which contains a binder resin, wax, and a colorant;
- and
- an external additive layer to coat the core,
- wherein the core is prepared such that the core is extruded and extended to include a fiber phase, and is pulverized.
A process of manufacturing a toner, the process comprising:
- preparing a melted product to form a core by melt-kneading a binder resin, wax, and a colorant;
- extruding the resultant melted product through a micro-capillary die to obtain an unextended core;
- extending the unextended core;
- pulverizing the extended core having a fiber phase;
- and
- coating the pulverized core with an external additive layer containing silica, metallic oxide and polymer beads.
An image forming method, the method comprising:
- forming a visible image by attaching a toner on the surface of a photoreceptor on which an electrostatic latent image is formed;
- and
- transferring the visible image onto a transferring member, the toner comprising:
- a core which contains a binder resin, wax, and a colorant;
- and
- an external additive layer to coat the core,
- wherein the core is prepared such that the core is extruded and extended to include a fiber phase, and is pulverized.
An image forming apparatus, comprising:
- an organic photoreceptor;
- a means for charging a surface of the organic photoreceptor;
- a means for forming an electrostatic latent image on the surface of the organic photoreceptor;
- a means for receiving a toner, the toner comprising:
- a core containing a binder resin, wax, and a colorant;
- and
- an external additive layer coating the core,
- wherein the core is prepared such that it is extruded and extended to include a fiber phase, and pulverized;
- a means for forming a toner image by supplying the toner to develop the electrostatic latent image of the organic photoreceptor;
- and
- a means for transferring the toned image from the photoreceptor to a transferring member.
A toner usable with an image forming apparatus, comprising:
- a fibril-shaped core;
- and
- an external additive layer to coat the fibril-shaped core,
- wherein the fibril-shaped core contains a colorant.
Dependencies are inferred from the claim text.