Samsung Electronics Co., Ltd.

Tae-hoe Koo

Jun-Young Lee

Kyeong Pang

Su-bum Park

Ju-yeon Lee

Seung-Jun Lee

Hae-ree Joo

Yo-da Shin

Se-young Yoon

Main performances of a toner are significantly affected by a shape and surface characteristics of toner particles. Using an external additive may be a factor that complicates control of surface characteristics of the toner particles, and anti-offset properties of toner change according to a wax and a binder composition at a surface portion of the toner particles. Provided is a toner usable in electrophotography, wherein the toner has improved durability, fixability, charging stability, and cleaning properties through an appropriate distribution of a binder, a wax, and an external additive on a surface portion of toner particles.

Electrophotography toner

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.

Electrophotographic toner and method of preparing the same

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

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Suwon-si, South Korea

Tae-hoe Koo