Patent application number | Description | Published |
20090246673 | Method for Manufacturing a Toner Having Good Charging Characteristics - There is provided a toner having good charging characteristics that is composed of a core region and a thin shell in which a charge control agent is densely distributed so as to improve charging characteristics of the toner, and a method for manufacturing the same. The method for manufacturing a toner having a bi-layered structure includes: producing a toner core using a suspension polymerization method; preparing a suspension of toner particles having a core-shell structure by forming a rigid shell on a surface of the toner core; and recovering the toner particles from the suspension as a post-processing operation. | 10-01-2009 |
20090280430 | Method for Manufacturing Toner - There is provided a method for manufacturing a toner capable of providing a toner having excellent low-temperature fixing property and anti-offset property by adjusting a molecular weight distribution of a polymerization toner to a narrow distribution range. The method is characterized in that a toner is polymerized using a reversible addition-fragmentation chain transfer polymerization (RAFT) method by adding a dithioacetate, xanthate or dithioester-based chain transfer agent in the polymerization of a toner. The method for manufacturing a toner comprises: dissolving a dispersant in water to prepare an aqueous dispersion solution; mixing a binder resin monomer, a charge control agent, a pigment, a wax and a dithioacetate, xanthate or dithioester-based chain transfer agent to prepare a monomer mixture; adding the monomer mixture to the aqueous dispersion solution and suspension-polymerizing the monomer mixture to form a toner composition; removing the dispersant from the toner composition; and drying the dispersant-free toner composition under a vacuum condition. | 11-12-2009 |
20100104968 | Polymerized toner having high resolution - A polymerized toner is provided. The polymerized toner comprises a reactive anionic surfactant having at least one reactive functional group. The reactive anionic surfactant is added simultaneously with a dispersant to prepare an aqueous dispersion or is added within 2 hour after a polymerization reaction of a monomer mixture is initiated in an aqueous dispersion. This simultaneous or rapid addition allows the reactive anionic surfactant to be dispersed on the surface of the toner particles. The reactive anionic surfactant is located over the entire surface of the toner particles to increase the surface charge density of the toner, achieving good charge stability and excellent imaging characteristics. | 04-29-2010 |
20120107736 | PROCESS FOR PREPARING POLYMERIZED TONER - The present invention relates to a process for preparing a polymerized toner, and in particular to a process for preparing a polymerized toner and a polymerized toner prepared therefrom, wherein a certain block copolymer and copper phthalocyanine are used within a predetermined range of the amounts for a carbon black dispersant during a suspension polymerization, thereby making it possible to realize a narrow particle sizes distribution, high transcription efficiency, and an enhanced image concentration. | 05-03-2012 |
20130029262 | MAGENTA POLYMERIZED TONER - This disclosure relates to magenta polymerized toner comprising magenta pigment selected from quinacridone-based derivatives and magenta pigment selected from diketo-pyrrolopyrrole derivatives, having high transfer efficiency, high image density, and uniform particle distribution. | 01-31-2013 |
20140377698 | POLYMERIZED TONER AND A METHOD FOR PREPARING THE SAME - This disclosure relates to a polymerized toner prepared by suspension polymerization. Particularly, this disclosure relates to a polymerized toner that further comprises a specific functional macro monomer, a polymer thereof, or a mixture thereof, in addition to a binder resin, and a pigment, a pigment stabilizer, a charge control agent and wax, which are dispersed in the binder resin, and thus can be fixed at low temperature in a development process, and exhibit high glossiness and excellent transfer efficiency. | 12-25-2014 |
20150294757 | BASE FILM, LAMINATED STRUCTURE COMPRISING THE SAME, AND DISPLAY DEVICE (As Amended) - The present invention relates to a base film, a laminated structure comprising the same, and a display device. More specifically, a transparent base film including a polymer having a cyclic olefin-based repeating unit including an exo isomer in a predetermined content or more to show a high glass transition temperature, such that thermal resistance may be excellent, and light transmittance may be high, and a laminated structure comprising the same, and a display device. | 10-15-2015 |
20150299841 | BASE FILM, LAMINATED STRUCTURE INCLUDING THE SAME, AND DISPLAY DEVICE - This disclosure relates to a base film, a laminated structure including the same, and a display device. More specifically, this disclosure relates to a base film that includes a polymer having a cyclic olefin-based repeat unit containing exo-isomers above a specific content and a copolymer including a styrene-based repeat unit and a maleimide-based repeat unit, exhibits a high glass transition temperature and thus has excellent heat resistance, and has high light transmittance, a laminated structure including the same, and a display device. | 10-22-2015 |
Patent application number | Description | Published |
20110150542 | IMAGE FORMING APPARATUS AND TRANSFER DEVICE THEREOF - An image forming apparatus having an improvement to increase the reliability of a sensing operation that is carried out to improve image quality, and a transfer device thereof. The image forming apparatus includes at least one photosensitive member, a plurality of developing units to supply developer to the at least one photosensitive member so as to form a visible image, and a transfer belt to transfer the visible image formed on the at least one photosensitive member to a printing medium, an inner surface of the transfer belt being rotatably supported by at least two rollers. The image forming apparatus further includes at least one sensor to sense a mark formed on the transfer belt, and a supporting unit to support the transfer belt at a position corresponding to the at least one sensor so as to apply a tensile force to the transfer belt. The supporting unit includes a first supporting portion and a second supporting portion arranged to support the transfer belt at different two positions in a rotating direction of the transfer belt. | 06-23-2011 |
20110216784 | METHOD AND APPARATUS FOR GENERATING VIDEO PACKET - Methods and apparatuses for generating video packets are provided. A method of generating a video packet includes generating at least one pixel block including at least one reference pixel and at least one neighboring pixel adjacent to the at least one reference pixel from pixels of a video frame; replacing a pixel value of the at least one neighboring pixel in the at least one pixel block with a pixel difference value, which is a difference value between a pixel value of a pixel adjacent to the at least one neighboring pixel and the pixel value of the at least one neighboring pixel; and generating packets so that a pixel value of the at least one reference pixel and the pixel difference value of the at least one neighboring pixel are allocated to different packets according to positions of the pixels. | 09-08-2011 |
20110255896 | Image forming apparatus and method of controlling the same - An image forming apparatus including: an image carrying member supported in a body housing and forming a visible image by a developing agent; a transfer unit including a driving roller supported in the body housing and an intermediate transfer belt rotated by the driving roller in a first direction on which the visible image on the image carrying member is intermediately transferred to when a printing process is conducted on a recording medium; a cleaning blade in contact with the intermediate transfer belt to clean a remaining developing agent on the intermediate transfer belt rotating in the first direction; the intermediate transfer belt being rotated in an opposite direction to the first direction, for a preset period of time before the visible image is intermediately transferred and rotating the intermediate transfer belt in the first direction so that the visible image is intermediately transferred when the printing process starts. | 10-20-2011 |
20110272263 | METAL DOME SHEET COMPRISING CONDUCTIVITY SHEET - The keypad assembly uses a metal dome sheet that shields electromagnetic waves and noise. A metal dome is placed on a base sheet. And a conductive sheet is placed above the base sheet to shield electromagnetic waves and noise. | 11-10-2011 |
Patent application number | Description | Published |
20140030599 | Electrode Active Material For Secondary Battery - Disclosed herein is an electrode active material for a secondary battery, and more particularly to an electrode active material comprising a porous silicon oxide-based composite and the method for preparing a porous silicon oxide-based composite. | 01-30-2014 |
20140141334 | POROUS COMPOSITE AND MANUFACTURING METHOD THEREOF - Provided are a porous composite expressed by Chemical Formula 1 and having a porosity of 5% to 90%, and a method of preparing the same: | 05-22-2014 |
20140154564 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREOF, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided are an anode active material including carbon-based particles, silicon nanowires grown on the carbon-based particles, and a carbon coating layer on surfaces of the carbon-based particles and the silicon nanowires, and a method of preparing the anode active material. | 06-05-2014 |
20140154578 | ANODE ACTIVE MATERIAL INCLUDING POROUS SILICON OXIDE-CARBON MATERIAL COMPOSITE AND METHOD OF PREPARING THE SAME - Provided are an anode active material including a porous silicon oxide-carbon material composite which includes a porous silicon oxide including pores and a line-type carbon material coated on a surface, in the pores, or on the surface and in the pores of the porous silicon oxide, and a method of preparing the anode active material. | 06-05-2014 |
20140322601 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHUM SECONDARY BATTERY COMPRISING THE SAME - The anode active material of the present invention comprises silicon-based particles obtained from at least one of silicon, a silicon oxide and a silicon alloy, and the silicon-based particles have a faceted shape, thereby providing high capacity and good life characteristics without causing any deterioration which has been generated in the use of conventional silicon-based particles, and eventually providing a lithium secondary battery having such characteristics. | 10-30-2014 |
20140377643 | POROUS SILICON-BASED ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE ANODE ACTIVE MATERIAL - Provided are a porous silicon-based anode active material including crystalline silicon (Si) particles, and a plurality of pores on surfaces, or the surfaces and inside of the crystalline silicon particles, wherein at least one plane of crystal planes of at least a portion of the plurality of pores includes a (100) plane, and a method of preparing the porous silicon-based anode active material. Since a porous silicon-based anode active material of the present invention may allow volume expansion, which is occurred during charge and discharge of a lithium secondary battery, to be concentrated on pores instead of the outside of the anode active material, the porous silicon-based anode active material may improve life characteristics of the lithium secondary battery by efficiently controlling the volume expansion. | 12-25-2014 |
20150072240 | POROUS SILICON-BASED PARTICLES, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE POROUS SILICON-BASED PARTICLES - Provided are a porous silicon-based particle including a silicon (Si) or SiO | 03-12-2015 |
20150380733 | ANODE ACTIVE MATERIAL AND METHOD OF PREPARING THE SAME - Provided are a porous silicon-based anode active material including a core part including silicon (Si) and M | 12-31-2015 |
20160028084 | POROUS SILICON-BASED ANODE ACTIVE MATERIAL, METHOD FOR PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided are a porous silicon-based anode active material including porous SiO | 01-28-2016 |
Patent application number | Description | Published |
20100254026 | OBJECT LENS - An object lens for an optical disk may include an aspherical lens surface, and an aspherical equation, which may be applied to form the aspherical lens surface may include two 2nd order function terms. Accordingly, a lens, which has a high numerical aperture (NA) and also has a small flexure on a lens surface or aberration, is provided. | 10-07-2010 |
20110063968 | OPTICAL PICKUP APPARATUS HAVING MULTI-SECTIONAL POLARIZER - An optical pickup apparatus includes a light generating unit to generate a light to record or reproduce information, an objective lens to focus the light generated from the light generating unit onto a disk, and a multi-sectional polarizer disposed on a light path between the light generating unit and the objective lens and divided into a plurality of sectors having their individual optical axes. | 03-17-2011 |
20120176881 | OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME - An optical pickup device is provided. The device includes a semiconductor laser light source which outputs linearly-polarized light having an elliptical shape, an objective lens which focuses light outputted from the semiconductor laser light source, forming an optical spot on an optical disc; and a polarization plate which is disposed placed on an optical path between the semiconductor laser light source and the objective lens, and which polarizes the light outputted from the semiconductor laser light source and transmits elliptically-polarized light, wherein the polarization plate is disposed such that a major axis of the elliptical polarization of the light transmitted by the polarization plate is parallel to or perpendicular to a major axis of the elliptical shape of the light. | 07-12-2012 |
Patent application number | Description | Published |
20110189581 | COMPOUND, CROSS-LINKED MATERIAL THEREOF, DOUBLE CROSS-LINKED POLYMER THEREOF, AND ELECTROLYTE MEMBRANE, ELECTRODE FOR FUEL CELL AND FUEL CELL INCLUDING SAME - A compound having an amino group at a terminal thereof and at least one amino group in a repeating unit, a cross-linked material of the compound, a double cross-linked polymer thereof, an electrolyte membrane and an electrode for a fuel cell, which include the cross-linked material of the compound or the double cross-linked polymer thereof, and a fuel cell including at least one of the electrolyte membrane and the electrode. | 08-04-2011 |
20110189584 | POLYMER AND CROSS-LINKED POLYMER COMPOSITION, ELECTRODE AND ELECTROLYTE MEMBRANE INCLUDING CROSS-LINKED POLYMER, AND FUEL CELL INCLUDING ELECTRODE AND ELECTROLYTE MEMBRANE - A polymer composition, a cross-linked polymer formed therefrom, an electrolyte membrane and electrode for a fuel cell including the same, and a fuel cell employing the electrode and the electrolyte membrane. The cross-linked polymer includes an oxazine-based monomer capable of retaining phosphoric acid and has excellent mechanical strength. When the cross-linked polymer is used, an electrode and electrolyte membrane for a fuel cell with enhanced capability of retaining phosphoric acid at a wide range of temperature may be manufactured, leading to long-term durability, and enhanced proton conductivity. | 08-04-2011 |
Patent application number | Description | Published |
20090072418 | MANUFACTURING THIN-FILM TRANSISTOR AND COLOR FILTER SUBSTRATES - A method of manufacturing thin film transistor and color filter substrates suitable for liquid crystal displays comprises imprinting a pattern in a resin layer formed on a substrate by disposing a mold on the resin layer, aligning the mold and the substrate, curing an edge portion of the resin layer, pressing the full area of the resin layer, curing the full area of the resin layer, and separating the mold from the resin layer. | 03-19-2009 |
20110156118 | SEMICONDUCTOR DEVICE WITH VERTICAL CELLS AND FABRICATION METHOD THEREOF - A method for fabricating a semiconductor substrate includes defining an active region by forming a device isolation layer over the substrate, forming a first trench dividing the active region into a first active region and a second active region, forming a buried bit line filling a portion of the first trench, forming a gap-filling layer gap-filling an upper portion of the first trench over the buried bit line, forming second trenches by etching the gap-filling layer and the device isolation layer in a direction crossing the buried bit line, and forming a first buried word line and a second buried word line filling the second trenches, wherein the first buried word line and the second buried word line are shaped around sidewalls of the first active region and the second active region, respectively. | 06-30-2011 |
20130234282 | SEMICONDUCTOR DEVICE WITH VERTICAL CELLS AND FABRICATION METHOD THEREOF - A method for fabricating a semiconductor substrate includes defining an active region by forming a device isolation layer over the substrate, forming a first trench dividing the active region into a first active region and a second active region, forming a buried bit line filling a portion of the first trench, forming a gap-filling layer gap-filling an upper portion of the first trench over the buried bit line, forming second trenches by etching the gap-filling layer and the device isolation layer in a direction crossing the buried bit line, and forming a first buried word line and a second buried word line filling the second trenches, wherein the first buried word line and the second buried word line are shaped around sidewalls of the first active region and the second active region, respectively. | 09-12-2013 |
Patent application number | Description | Published |
20080248143 | Pulsatilla Spp. Extracts Effective in Brain Function - This invention relates to Pulsatillae Radix extract for improving brain functions. More specifically, this invention relates to Pulsatillae Radix extract, its active fractions and a pharmaceutical product and a health food containing the same respectively having a protective activity against neurotoxicity and a growth inhibitory effect induced by beta-amyloid, an anti-oxidizing effect, a neuron proliferating effect and improving memory thereby effective in improving brain functions such as Mild Cognitive Impairment and dementia. | 10-09-2008 |
20110214706 | CANOPY TENT - The present invention relates to a canopy tent, comprising: a main body having an outer surface with a plurality of joint rings, and a hollow interior; a sliding member having an outer surface with a plurality of joint rings, and an interior with a downwardly protruding cylinder; a support pole, one end of which is hinged to the joint rings of the main body, and the other end of which is connected to a tent pole for standing the tent fabric upright, and which has a pole connection portion with a joint ring formed at the outer surface thereof; and a joint bar, one end of which is hinged to the joint ring of the sliding member, and the other end of which has one side hinged to a first connection bar hinged to the joint ring of the support pole and the other side hinged to a second connection bar hinged to the joint ring of the main body. The hollow interior of the main body is equipped with a compression spring and a spring holder. The spring holder is coupled to the lower portion of the cylinder. The cylinder of the sliding member is fitted into the hollow interior of the main body from the top of the hollow interior such that the cylinder is movable in the upward and downward directions. The canopy tent of the present invention can be set up or taken down in a rapid and convenient manner using the elastic force of the compression spring arranged in the connection device installed on top of the tent and the elastic force of tent poles connected to the support poles hinged to the connection device. | 09-08-2011 |
20110320427 | SYSTEM AND METHOD FOR COLLECTING DOCUMENT - Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected. | 12-29-2011 |
20120174106 | MOBILE TERMINAL AND METHOD FOR MANAGING TASKS AT A PLATFORM LEVEL - A mobile terminal includes an execution unit to execute tasks, a determination unit to determine whether to manage the executed tasks and to generate a termination processing signal for terminating a first executed tasks if the executed tasks are to be managed, and a control unit to terminate the first executed task according to the termination processing signal generated by the determination unit. A method for managing tasks includes executing tasks, determining whether to manage the executed tasks, generating a termination processing signal for terminating a first executed task according to the determination result, and terminating the first executed task according to the termination processing signal. | 07-05-2012 |
Patent application number | Description | Published |
20090034993 | METHOD AND APPARATUS FOR FORMING IMAGE - A method and apparatus for forming an image determine if printing paper is properly picked up, and printing data is transferred to an intermediate transfer belt (ITB). When it is sensed that the printing paper is not properly picked up, picking up the printing paper is retried considering a revolution cycle of the ITB. Thus, the frequency of errors can be decreased, and a user's convenience can be increased because picking up the printing paper is automatically retried whenever mis-pick up occurs instead of displaying an error. Further, wasting of toner is decreased. | 02-05-2009 |
20090103961 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD THEREOF - An image forming apparatus and an image forming method thereof. The image forming apparatus includes an image forming part which forms a color image on a printing medium, a pickup roller which picks up the printing medium, and a controller which controls the pickup roller to try to pick up the printing medium if image forming for a first color among a plurality of colors is completed, and controls the image forming part to form an image corresponding to a second color among the plurality of colors after trying to pick up the printing medium. | 04-23-2009 |
20110142470 | Image forming apparatus and control method thereof - A method of controlling an image forming apparatus and method thereof including a medium feeder configured to load therein and to pick up and feed a printing-target medium; an image forming unit configured to form an image on the printing-target medium that is picked up and fed; and a fixing unit configured to fix the printed medium on which the image has been formed, the method including: heating the fixing unit such that a temperature of the fixing unit reaches a fixing reference temperature determined corresponding to the printing-target medium if an printing operation is started; sensing the temperature of the fixing unit corresponding to the start of the printing operation and compensating a pickup timing temperature corresponding to whether the sensed temperature thereof is higher or lower than a predetermined first reference temperature, the pickup timing temperature being a temperature for picking up the printing-target medium; and picking up the printing-target medium when the temperature of the fixing unit that is being heated reaches the compensated pickup timing temperature. | 06-16-2011 |
20130016985 | COLOR IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOFAANM Son; Jung WooAACI SeoulAACO KRAAGP Son; Jung Woo Seoul KRAANM Kim; Suk GooAACI Namyangju-siAACO KRAAGP Kim; Suk Goo Namyangju-si KR - A color image forming apparatus and a control method thereof, in which a transfer start position of a transfer belt is determined based on electric signals that correspond to a width of a position indicator provided on a transfer belt and are detectable during one rotation of the transfer belt even when noise occurs in output, thereby reducing the overall printing time. | 01-17-2013 |
20130089353 | IMAGE FORMING APPARATUS TO ENHANCE PRINTING PERFORMANCE AND PRINTING METHOD THEREOF - An image forming apparatus to perform mono printing and color printing having different printing speeds and enhance printing performance includes an image forming unit to perform the color printing and the mono printing, and a control unit to determine whether to change a printing speed by comparing an amount of printing to be processed with a predetermined critical value and, if it is determined to change the printing speed, controlling the image forming unit to perform printing according to the amount of printing to be processed by switching a printing speed from printing at a relatively slow printing speed to printing at a relatively fast printing speed. | 04-11-2013 |
20130330095 | IMAGE FORMING APPARATUS AND COLOR TONE DENSITY CONTROLLING METHOD THEREOF - A method of controlling a color-tone density (CTD) of an image forming apparatus including a plurality of developers configured to circularly perform a developing operation. The method includes developing test patches on an OPC sequentially from a developer to be developable preferentially, measuring CTDs of the developed test patches, and controlling a development variable using the measure CTDs. | 12-12-2013 |
20140233974 | METHOD AND APPARATUS FOR FORMING IMAGE - A method and apparatus for forming an image determine if printing paper is properly picked up, and printing data is transferred to an intermediate transfer belt (ITB). When it is sensed that the printing paper is not properly picked up, picking up the printing paper is retried considering a revolution cycle of the ITB. Thus, the frequency of errors can be decreased, and a user's convenience can be increased because picking up the printing paper is automatically retried whenever mis-pick up occurs instead of displaying an error. Further, wasting of toner is decreased. | 08-21-2014 |