Samsung Electronics Co., Ltd.

Hp Printing Korea Co., Ltd.

Su-bum Park

Kyeong Pang

Jun-Young Lee

Jeong-hyun Lee

Tae-hoe Koo

Jae-Hwan Kim

Jin-mo Hong

Mi-rim Cho

Ju-yeon Lee

Hae-ree Joo

Yo-da Shin

Seung-Jun Lee

Jeong-Hyun Lee

Jin-Mo Hong

An electrophotographic toner including a binder, a colorant and a releasing agent, and a method of preparing the electrophotographic toner.

Electrophotographic toner and method of preparing the same

A toner to develop an electrostatic charge image, a toner supply device employing the toner, an apparatus to form an image employing the toner, and a method of forming an image using the toner are provided. The toner includes at least a binder resin, a colorant, and a releasing agent. By using the binder resin including a combination of a reduced molar weight binder resin, an increased molar weight binder resin, and the releasing agent having an effecdtive compatibility with the binder resin together, the toner has accurately-controlled dynamic viscoelastic properties represented by a loss tangent. The toner to develop an electrostatic charge image according to an embodiment has development stability, development lifetime, fixability, charging stability, gloss, an anti-offset property, and heat storage ability at predetermined levels or higher.

Toner to develop electrostatic charge image, device to supply the same, and apparatus and method of forming image using the same

An electrophotographic toner and a method of preparing the same, the electrophotographic toner including a binder that includes two kinds of resin having different weight average molecular weights, a colorant, and a releasing agent.

A toner includes a binder including two different weight molecular weight resins, a colorant, and a releasing agent, wherein a gel permeation chromatogram (GPC) molecular weight distribution curve of the toner has a major peak (Mp) present in a range of about 1.0&#xd7;10to about 3.0&#xd7;10g/mol and a shoulder curve starting at 1.0&#xd7;10g/mol or more, and a storage modulus (G') curve of the toner with respect to temperature has T, which is a temperature at which a storage modulus value begins to decrease, in a temperature range of about 50 to about 67&#xb0; C.

Toner for developing electrostatic latent image and method of preparing the same

An electrophotographic toner and a process for preparing the same. The electrophotographic toner includes a binder, a coloring agent, and a release agent. The binder includes two resins having different weight average molecular weights.

Electrophotographic toner and process of preparing the same

A toner to develop an electrostatic charge image, a method of preparing the toner, a toner supply device employing the toner, an apparatus to form an image employing the toner, and a method of forming an image using the toner are provided. The toner includes a binder resin including a first type of binder resin having a first weight-average molecular weight and a second type of binder resin having a second weight-average molecular weight different than the first weight-average molecular weight, a colorant, and a releasing agent.

Toner for developing electrostatic charge image, method of preparing the same, device for supplying the same, and apparatus and method for forming image using the same

The disclosure provides an electrographic toner having a core layer, which includes a binder, a colorant and two or more types of releasing agents, and a shell layer covering the core layer, and a method of preparing the same.

Electrographic toner and method of preparing the same

Provided are an electrophotographic toner, a process for preparing the same, image forming method and an image forming apparatus using the toner. The electrophotographic toner may include a latex, colorant, wax, Si and Fe. A molar ratio of Si/Fe may be about 0.1 to about 5.

Electrophotographic toner, process for preparing the same, image forming method and apparatus using the toner

Toner for developing an electrostatic image, which satisfies charging stability, low-temperature fixability, high-temperature storage characteristics, and durability with respect to an environment up to a predetermined level or above, and a method of preparing the toner. The toner includes: a core layer including a first binder resin, a colorant, and a releasing agent; and a shell layer covering the core layer and including a second binder resin, wherein the first binder resin includes about 70 wt % or above of amorphous polyester resin and about 30 wt % or below of crystalline polyester resin, the second binder resin includes an amorphous polyester resin, and a melting temperature (Tm(C)) of the crystalline polyester resin, a melting temperature (Tm(W)) of the releasing agent, and a melting point (Tm(T)) of the toner satisfy the following conditions: &#x2212;20&#xb0; C.&#x2266;Tm(W)&#x2212;Tm(C)&#x2266;20&#xb0; C.; and 0&#xb0; C.&#x3c;Tm(C)&#x2212;Tm(T)&#x2266;10&#xb0; C.

Toner for developing electrostatic image and method of preparing the same

The present disclosure provides an electrographic toner and methods for preparing an electrographic toner. In particular, the present disclosure provides an electrophotographic toner comprising a latex, a colorant and a releasing agent. The electrophotographic toner may further comprise zinc (Zn), iron (Fe), and silicon (Si). The [Zn]/[Fe] ratio may be in the range of about 5.0&#xd7;10to about 2.0. The [Si]/[Fe] ratio may be in the range of about 5.0&#xd7;10to about 5.0&#xd7;10. [Zn], [Fe] and [Si] denote the intensities of Zn, Fe and Si, respectively, as measured by X-ray fluorescence spectrometry.

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Daegu, South Korea

Su-bum Park