Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8038359 | Printing medium supply device and image forming apparatus having the same An image forming apparatus including an image forming apparatus body, a printing engine installed in the image forming apparatus body and used to print an image on a printing medium supplied to the printing engine, a printing medium supply device having a loading pl... | 10/18/2011 |
| 7912397 | Fuser, image forming apparatus, and method to control the apparatus A fuser, an image forming apparatus, and a method to control the apparatus includes a power supply unit to supply power to a plurality of heat sources provided in the fuser, and is controlled to gradually increase and change in a stepwise manner an amount of current... | 03/22/2011 |
| 7911488 | Ion print head and image forming apparatus using the same An ion print head and image forming apparatus using the same includes at least one discharge cell array structure having microelectrodes to form an electrostatic latent image on an insulation layer of an electrostatic drum by selectively applying charged particles t... | 03/22/2011 |
| 7899378 | Image forming apparatus having movable belt An image forming apparatus includes at least one supporting roller, a movable belt supported by the supporting roller, and a shifting restricting unit to prevent the movable belt from shifting to any one side along an axial direction of the supporting roller. The sh... | 03/01/2011 |
| 7890023 | Image forming apparatus An image forming apparatus to remove a jammed printing medium and to prevent a transmission of fixing heat is provided. The image forming apparatus includes a fixing unit to fix a toner image into a printing medium when the toner image is transferred onto the printi... | 02/15/2011 |
| 7889870 | Method and apparatus to simulate 2-channel virtualized sound for multi-channel sound A stereo sound generation method and apparatus to generate a stereo sound, by using 2-channel headphones, earphones, or speakers, from a multi-channel sound signal reproduced through a variety of media such as a DVD-video, and a DVD-audio. The stereo sound generatio... | 02/15/2011 |
| 7889606 | Optical disc drive and control method thereof An optical disc drive and a control method thereof are disclosed to prevent unstable servo-control of a pickup module caused by an abnormal control signal, when recording/reproducing/erasing of information on/from an optical disc in the optical disc drive, and in pa... | 02/15/2011 |
| 7888237 | Method of cutting semiconductor wafer, semiconductor chip apparatus, and chamber to cut wafer A method of cutting a semiconductor wafer includes preparing a semiconductor wafer including a scribe region and a chip region, forming a groove in the scribe region, loading the semiconductor wafer with the groove formed therein in a chamber, and cutting the semico... | 02/15/2011 |
| 7887154 | Inkjet image forming apparatus and method of compensating for defective nozzle thereof An inkjet image forming apparatus and a method of defective nozzle compensation in the inkjet image forming apparatus. The method includes detection of an occurrence and a position of the defective nozzle in a nozzle unit, when the defective nozzle is detected, anal... | 02/15/2011 |
| 7887039 | Image forming apparatus An image forming apparatus, which can efficiently align a paper supplied to a printing unit of a main body from a paper feeding unit that is removably mounted to the main body, includes a paper aligning unit, integrally provided with a paper container of the paper f... | 02/15/2011 |
| 7883179 | Nozzle plate usable with inkjet printhead A nozzle plate usable with an inkjet printhead includes a substrate through which a plurality of nozzles are formed, an ink-philic material layer formed on an outer surface of the substrate and inner walls of the nozzles, and a plurality of nonwetting coating layers... | 02/08/2011 |
| 7883069 | Lifting device of a display apparatus A lifting device used to fix the display apparatus to a wall. The display apparatus can be formed in a rear surface thereof with a plurality of holes. The lifting device includes a wire having both ends coupled to any one pair of holes of the plurality of holes, and... | 02/08/2011 |
| 7881039 | Multi-layer ceramic capacitor having improved component capacity and production method thereof A multi-layer ceramic capacitor comprises dielectric sheets including a first external electrode, a first internal electrode joined to the first external electrode via an interposed dielectric portion, a second external electrode joined to the first internal electro... | 02/01/2011 |
| 7846495 | Method of forming hydrophobic coating layer on surface of nozzle plate of inkjet head An inkjet head having a hydrophobic coating layer and a method of forming the hydrophobic coating layer on a surface of a nozzle plate of the inkjet head. The method includes filling a wax into a plurality of nozzles formed in the nozzle plate while coating the surf... | 12/07/2010 |
| 7845863 | Image photography apparatus An image photography apparatus enabling a user to capture an object by freely changing a position of the hand according to an angle shot while gripping the image photography apparatus. The image photography apparatus includes a main body and a rotation unit rotatabl... | 12/07/2010 |
| 7877036 | Power supply device and image forming apparatus having the same A power supply includes a transformer to transform an input voltage into an output driving voltage for one of a plurality of components of an image forming apparatus, and an output converter to detect the driving voltage being output from the transformer, to amplify... | 01/25/2011 |
| 7876383 | Digital broadcasting receiver to search channels in parallel and channel searching method thereof A digital broadcasting receiver includes a RF switch to divide an entire channel range of an input broadcasting signal into at least two channel ranges for at least one of a received air broadcasting signal and a cable broadcasting signal, at least two channel searc... | 01/25/2011 |
| 7874650 | Piezo-electric type page width inkjet printhead and image forming apparatus having the same A piezo-electric type page width inkjet printhead includes an intermediate substrate that includes a pressure chamber to be filled with ink to be ejected, a manifold connected to an ink entrance hole to store ink that flows in through the ink entrance hole, a restri... | 01/25/2011 |
| 7872661 | Image bearing structure and method to detect a defect in the image bearing structure An image bearing structure includes an image drum including at least one slot, a plurality of ring electrodes formed on an outer circumference of the image drum, and a control board positioned within the slot of the image drum, and connected to the plurality of ring... | 01/18/2011 |
| 7871160 | Ink circulation apparatus and inkjet printer including the same An inkjet printer includes an ink tank to store ink, an auxiliary tank having an ink chamber through which the ink circulates with the ink tank, a head having nozzles which communicate with the ink chamber and eject ink therethrough, a filter which is positioned ins... | 01/18/2011 |
| 7865930 | Method and apparatus providing channel management in a multi-frequency network broadcasting system A method and apparatus providing channel management in a broadcast receiver. The method includes estimating an intensity and a signal-to-noise ratio (SNR) of broadcast signals received via a plurality of physical channels (PCT channels) in a channel memory mode, det... | 01/04/2011 |
| 7865128 | Discharging unit and image forming apparatus having the same A discharging unit for discharging a printing medium from an image forming apparatus includes an elastic roller and a curl preventing roller to oppose each other in a pressing relationship forming a nip therebetween to reduce curling of a print medium passing throug... | 01/04/2011 |
| 7864208 | F-O lens, light scanning unit and image forming apparatus employing the same An f-θ lens is joined to a mount through a light curable bond, forms an incident deflected beam onto a photosensitive body, and includes a lens part which has an incident side on which the deflected beam is incident, and an exiting side which is disposed near the p... | 01/04/2011 |
| 7863161 | Method of cutting a wafer In a method of cutting a wafer, a supporting member is attached to an upper surface of the wafer on which semiconductor chips are formed. An opening is formed at a lower surface of the wafer along a scribe lane of the wafer. The lower surface of the wafer may be pla... | 01/04/2011 |
| 7862150 | Inkhead printhead configured to overcome impaired print quality due to nozzle blockage, printing method using the same, and method of manufacturing the inkjet printhead The inkjet printhead includes substrate having an ink feed hole formed to supply ink, a chamber layer stacked on the substrate, and including a plurality of main ink chambers formed therein with the ink feed hole therebetween and a plurality of compensation ink cham... | 01/04/2011 |
| 7860434 | Developing cartridge and image forming apparatus including the same A developing cartridge includes a body frame, a photosensitive body having a shaft, a developing unit having a shaft in parallel to the photosensitive body, a driven part that is rotatably joined to the shaft of the developing unit, a transmission part that has a tr... | 12/28/2010 |
| 7860260 | Method, apparatus, and computer readable medium to reproduce a 2-channel virtual sound based on a listener position A method of reproducing a virtual sound and an apparatus to reproduce a 2-channel virtual sound from a 5.1 channel (or 7.1 channel or more) sound using a two-channel speaker system. The method includes: generating a 2-channel virtual sound from a multi-channel sound... | 12/28/2010 |
| 7856515 | Display apparatus to detect a connecting state of a cable A display apparatus connected with an external video source through a video cable having a first cable connector and a second connector connected to the external video source includes a display connector having a plurality of signal pins to which the first cable con... | 12/21/2010 |
| 7855747 | Portable integrated device and a method of controlling power thereof A portable integrated device and a method of controlling power thereof. The method of controlling power to a digital integrated device which includes a first body and a second body slidingly attached to each other and a first mode and a second mode including sliding... | 12/21/2010 |
| 7853087 | High-speed binary image compression method A high-speed binary image compression method, the method including calculating an estimation value of a current pixel based on a context value derived from neighboring pixels of the current pixel, determining whether a pixel value of the current pixel, the context v... | 12/14/2010 |
| 7852506 | Method and apparatus to manage print jobs using labeling A method and apparatus to manage print jobs using labeling. The apparatus includes a user interface, a data storage unit to store the print jobs, and a controller to display predetermined types of job labels via a display device, to generate a job management table b... | 12/14/2010 |
| 7852428 | Liquid crystal display A liquid crystal display to reduce a number of parts forming a back light unit includes a liquid crystal panel, a light source to illuminate light on the liquid crystal panel, a reflection plate to reflect light emitted from the light source toward the liquid crysta... | 12/14/2010 |
| 7852322 | Portable computer A portable computer includes a main body casing having an opening formed at a center part thereof, and a first panel and a second panel which are provided in opposite sides of the opening, a display part which displays an image through the opening, and a first input... | 12/14/2010 |
| 7850297 | Image forming apparatus An image forming apparatus includes a cartridge which ejects an ink, a chamber having an inlet unit which inhales a fog generated when the ink is ejected from the cartridge and an outlet unit which exhales the inhaled fog, an air pressure generating unit which is co... | 12/14/2010 |
| 7844012 | Digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and gener... | 11/30/2010 |
| 7843528 | Backlight unit and flat panel display having the same A flat panel display includes a base chassis, a display panel, a backlight unit connected to the base chassis to emit light to the display panel, and including a substrate mounted with a plurality of light emitting diodes (LEDs) each generating light and a light gui... | 11/30/2010 |
| 7843481 | Light scanning device capable of producing non-coplanar scanning lines An image forming apparatus having improved arrangement of photosensitive members and configuration of a light scanning device to enable size reduction is described. The image forming apparatus includes a plurality of photosensitive members, a light scanning device t... | 11/30/2010 |
| 7843436 | Portable information processing apparatus A portable information processing apparatus including a main body including a display opening and a front panel surface surrounding the display opening, a display unit to display an image through the display opening, a key button input unit oppositely arranged acros... | 11/30/2010 |
| 7840762 | Multi-path accessible semiconductor memory device having mailbox areas and mailbox access control method thereof A multipath accessible semiconductor memory device having a mailbox area and a mailbox access control method thereof are provided. The semiconductor memory device includes N number of ports, at least one shared memory area allocated in a memory cell array, and N num... | 11/23/2010 |
| 7838438 | Dielectric layer, method of manufacturing the dielectric layer and method of manufacturing capacitor using the same A dielectric layer, an MIM capacitor, a method of manufacturing the dielectric layer and a method of manufacturing the MIM capacitor. The method of manufacturing the dielectric layer includes chemically reacting a metal source with different amounts of an oxidizing ... | 11/23/2010 |
