Patent application number | Description | Published |
20090111043 | ENVIRONMENT-FRIENDLY TONER FOR ELECTROPHOTOGRAPHY AND METHOD OF PREPARING THE SAME - A toner for electrophotography includes a polyester-based resin, a colorant, a charge controlling agent, and a releasing agent, wherein the toner does not substantially comprise of an organic tin, and generates about 100 ppm or less of volatile organic compounds at a temperature of about 150 to about 200° C. | 04-30-2009 |
20090130577 | RECORDING MEDIUM FOR ELECTROPHOTOGRAPHIC APPLICATIONS - A recording medium for electrophotographic applications includes a base layer and an outermost coating layer containing a porous adsorptive material. According to the present general inventive concept, since a porous adsorptive material is contained in an outermost coating layer of the recording medium, volatile hazardous material generated from toner during a printing operation can be directly adsorbed on the recording medium to efficiently decrease or remove an occurrence of volatile hazardous material, so that a separate filter or apparatus to remove the volatile hazardous material is not needed and thus economical effects can be obtained. | 05-21-2009 |
20090214965 | TONER FOR ELECTROPHOTOGRAPHY - An electrophotographic toner includes a binder resin, a colorant, and a releasing agent, wherein the electrophotographic toner has a complex viscosity (η) of 4e2 Pa·s to 8e3 Pa·s at a temperature range of 120 to 160° C. and an angular velocity range of 1.6 to 10 rad/s, a rate of change of the complex viscosity of 165 to 185 Pa·s/° C. at 1.6 rad/s, and 70 to 80 Pa·s/° C. at 10 rad/s within the temperature range, a stress relaxation of 1.0 e3 to 4.5 e4 Pa at a relaxation time of 0.05 to 0.3 seconds under a temperature range of 120 to 160° C., and a rate of change of the stress relaxation (ΔG/ΔT) of 785 to 1000 Pa/° C. at 0.05 seconds and 190 to 215 Pa/° C. at 0.3 seconds within the temperature range above. | 08-27-2009 |
20090324296 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - Disclosed are an electrophotographic toner and a method of preparing the same. The electrophotographic toner includes latex; a colorant; and a releasing agent. The absolute value of a differential value of complex viscosity with respect to temperature, | 12-31-2009 |
20100009283 | ELECTROPHOTOGRAPHIC TONER, PROCESS FOR PREPARING THE SAME, IMAGE FORMING METHOD AND APPARATUS USING THE TONER - 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. | 01-14-2010 |
20100173242 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - An electrophotographic toner which includes a latex, a colorant, and a releasing agent, wherein characteristics of the electrophotographic toner measured by using a Fourier transform infrared spectroscopy in an attenuated total reflection mode (FT-IR-ATR), in which an incidence angle is changeable, satisfy Inequalities 1 through 3 presented herein. | 07-08-2010 |
20100196814 | TONER USABLE WITH ELECTROPHOTOGRAPHY AND METHOD OF PREPARING THE SAME - A toner usable with electrophotography includes an iron (Fe) content in the toner is in a range of about 1.0×10 | 08-05-2010 |
20120189489 | COMPLEX METAL OXIDE CATALYST, FILTER MODULE INCLUDING COMPLEX METAL OXIDE CATALYST, AND AIR CLEANER INCLUDING COMPLEX METAL OXIDE CATALYST - A complex metal oxide catalyst having a composition including about 5 to about 75 wt % of manganese (Mn); about 5 to about 55 wt % of copper (Cu); and about 3 to about 60 wt % of an active compound, based on a total weight of the complex metal oxide catalyst. The complex metal oxide catalyst has excellent low-temperature activity and improved catalyst efficiency so as to be repeatedly used, and thus is effectively used in a filter module and an air cleaner. | 07-26-2012 |
20130224642 | TONER TO DEVELOP ELECTROSTATIC CHARGE IMAGE, DEVICE TO SUPPLY THE SAME, AND APPARATUS AND METHOD OF FORMING IMAGE USING 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. | 08-29-2013 |
20130236824 | TONER TO DEVELOP ELECTROSTATIC LATENT IMAGES - A toner to develop electrostatic latent images, which has surface characteristics that may simultaneously improve charge uniformity, charge stability, transferability, and cleaning ability. The toner to develop electrostatic latent images may include core particles comprising a binder resin, a colorant, and a releasing agent; and an external additive including silica particles and titanium dioxide particles, wherein the external additive is attached to external surfaces of the core particles, wherein an iron intensity [Fe], a silicon intensity [Si], and a titanium intensity [Ti] that are measured by X-ray fluorescence (XRF) satisfy both conditions, 0.004≦[Si]/[Fe]≦0.009 and 0.8≦[Ti]/[Fe]≦2. | 09-12-2013 |