摘要:
An electrophotographic toner and a method of preparing the same are provided. The electrophotographic toner includes a latex, a colorant, and a releasing agent, wherein the electrophotographic toner includes silicon (Si) and iron (Fe), each of the Si and Fe is in the range of about 3 to about 1,000 ppm, a mole ratio of Si to Fe (Si/Fe) is in the range of about 0.1 to about 5, an initiation temperature of a maximum heat absorption peak curve when a temperature increases in a heat absorption curve of the toner measured by a differential scanning calorimeter (DSC) is in the range of about 68 to about 89° C., and a peak temperature of the maximum heat absorption peak curve is in the range of about 86 to about 89° C.
摘要:
A toner and a method of preparing the toner, the method including: preparing first latex particles by polymerizing a toner composition including a macromonomer having a hydrophilic group, a hydrophobic group, and at least one reactive functional group; at least one polymerizable monomer; and a wax; preparing a first agglomerated toner by mixing the first latex particles with a pigment dispersion dispersed by the macromonomer and adding an inorganic salt to the mixture; and coating second latex particles which are prepared by polymerizing a composition for the second latex particles including at least one polymerizable monomer and a cross-linkable monomer on the first agglomerated toner, a method of forming an image using the toner, and an image forming apparatus employing the toner.
摘要:
A toner preparation method is provided including: polymerizing a toner composition including a polyester-macromonomer having double bonds at the molecular chain ends and at least one polymerizable monomer to prepare a polymer latex; and mixing the polymer latex with a dispersed pigment solution obtained by dispersing a pigment in a macromonomer having both a hydrophilic group and a hydrophobic group and containing at least one reactive functional group and agglomerating the polymer latex in the presence of an inorganic salt, and a toner prepared using the toner preparation method. The toner has excellent properties of both a polyester-based monomer and a vinyl-based monomer and excellent gloss, durability, low-temperature fixing property, and storage stability, and the shape and size of the toner can be easily controlled.
摘要:
A method of preparing toner and a toner using the method is provided. More particularly, a method of preparing toner controls a shape of finally obtained toner particles by adjusting a molecular weight and Tg of polymer latex and can easily obtain a desired size, shape, and size distribution of toner particles by controlling aggregation of polymer latex particles and process conditions. A toner using the method, an image forming method using the toner and an image forming apparatus including the toner are also provided. The toner is prepared by forming polymer latex particles having different molecular weights by polymerizing a toner composition including macromonomers containing a hydrophilic group, a hydrophobic group and at least one reactive functional group, and at least one polymerizable monomer; and mixing the polymer latex particles having different molecular weights with a pigment dispersion solution to control aggregation of the polymer latex particles by controlling pH or an amount of added inorganic salts and optimizing process conditions.
摘要:
A test apparatus to evaluate the electrical properties of a liquid toner in which a printing quality of the liquid toner may be predicted by evaluating the electrical properties of the liquid toner without performing printing. The test apparatus to evaluate the electrical properties of a liquid toner includes a roller, a conductive flat panel positioned below the roller to move a predetermined distance in contact with the roller, a power supply device applying a voltage to the roller and the conductive flat panel, and a voltage tester provided at the rear of the roller to move together with the roller, testing a voltage of the liquid toner arranged on the conductive flat panel.
摘要:
A method of preparing a toner, includes: preparing a toner composition including a macromonomer including a hydrophilic group, a hydrophobic group, and one or more reactive functional groups, and one or more polymerizable monomers; emulsion polymerizing the toner composition while further adding one or more materials selected from the group consisting of a colorant dispersion and a wax dispersion, where the colorant and wax are dispersed in a nonionic reactive emulsifier and an anionic reactive emulsifier; and seperating and drying a emulsion polymerized toner composition. A toner prepared using the method, an image forming method using the toner, and an image forming apparatus employing the toner are also provided. Using the method, polymerized toner particles are prepared through a simplified process, and a colorant and wax inside the toner are dispersed easily.
摘要:
A method of preparing a toner is provided, including: preparing a toner composition including a macromonomer having a hydrophilic group, a hydrophobic group and one or more reactive functional groups, and one or more polymerizable monomers; emulsion polymerizing the toner composition and mixing one or more materials selected from the group consisting of a colorant dispersion and a wax dispersion, dispersed in a nonionic reactive emulsifier; and separating and drying a emulsion polymerized toner composition. A toner prepared is also provided using the method. An image forming method, and an image forming apparatus are provided employing the toner. Using the method, polymerized toner particles are prepared through a simplified process, and a colorant and wax are dispersed easily inside the toner particles.
摘要:
A method of preparing a toner is provided, including: polymerizing a toner composition including a chemically reformed or modified plant oil or a fatty acid, one or more polymerizable monomers, and a colorant with a free radical initiator; and separating and drying the polymerized toner. Also, provided are a toner prepared using the method, an image forming process using the toner, and an image forming apparatus employing the toner. According to the method, an environmentally friendly toner with superior durability and fixation properties is manufactured by using chemically reformed or modified plant oil or fatty acid. Also, regulating the size, the distribution and the configuration of toner particles are easy. In addition, the method does not involve the use or minimizes the use of a surfactant, thus decreasing the amounts of polluted water and waste water, which is very advantageous environmentally.
摘要:
A method of preparing a toner includes: preparing a toner composition including a macromonomer having a hydrophilic group, a hydrophobic group and at least one reactive functional group, at least one polymerizable monomer, and a colorant; emulsion-polymerizing the toner composition in a medium; and separating and drying the polymerized toner. A toner is prepared using the method. An image forming method using the toner, and an image forming apparatus using the toner are also provided. According to the method, the size, distribution and configuration of toner particles are easily controlled. In addition, the method does not involve the use of or minimizes the use of a surfactant, and decreases polluted water and waste water, which is very advantageous environmentally.
摘要:
Disclosed are a toner for developing an electrostatic latent image and a method of preparing the same. The toner may include latex, a pigment and a releasing agent. The lowest crossover temperature of the toner at which the storage modulus (G′) and the loss modulus (G″) of the toner are substantially equal to each other may be in the range of about 65 to about 80° C. The weight average molecular weight (Mw) of the toner may be in the range of about 65,000 to about 75,000. The z-average molecular weight (Mz) of the toner may be in the range of about 110,000 to about 220,000.