Abstract:
A capacitor embedded printed circuit board (PCB), the PCB including: a multilayer polymer capacitor layer where a plurality of polymer sheets is laminated; one or more first inner electrodes and second inner electrodes, separated by one or more of the plurality of polymer sheets and alternately disposed to form a pair; a plurality of first extended electrodes and second extended electrodes connected to the first inner electrodes and second inner electrodes, respectively; one or more insulating layers laminated on one or both surfaces of the multilayer polymer capacitor, where a plurality of conductive patterns and conductive via holes, forming an interlayer circuit are formed; a plurality of first via holes for capacitor, penetrating the multilayer polymer capacitor layer to be connected to the first extended electrodes; and a plurality of second via holes for capacitor, penetrating the multilayer polymer capacitor layer to be connected to the second extended electrodes, wherein the plurality of the first and second extended electrodes are alternately disposed to be opposite to each other.
Abstract:
An image forming apparatus including: a plurality of photosensitive members on which electrostatic latent images are formed; a plurality of charge units to charge the respective photosensitive members with an electric potential; at least one exposure unit which irradiates light to the respective photosensitive members; a plurality of developer supply devices, which adhere a developer to the respective photosensitive members, to form visible images on a surface of the respective photosensitive members; a transfer unit, which transfers the visible images formed on the respective photosensitive members to a transfer medium; and a plurality of exposure lamps which are mounted between the plurality of photosensitive members. Each of the exposure lamps radiates light to the surface of one of two adjacent photosensitive members, after completion of the transfer, to reset a surface potential thereof, and irradiates light to the surface of the other photosensitive member, on which the visible image is formed, to decrease a surface potential thereof.
Abstract:
A tone compensation method for a color printer and a color printer having a tone compensator are provided, wherein the method includes the steps of (a) acquiring a reference tone reproduction curve of print colors based on a printing environment, (b) forming sample patterns for one or more colors on a predetermined object medium, (c) forming a sectional tone reproduction curve by using the sample patterns, and (d), adjusting one or more print variables to compensate the sectional tone reproduction curve in order to reduce sectional errors between the reference tone reproduction curve and the sectional tone reproduction curve. Accordingly, it is possible to provide a tone compensation method capable of compensating for a sectional tone reproduction curve to approximate a reference tone reproduction curve without complicated mathematical calculations, and which is substantially unaffected by external disturbances and noise.
Abstract:
A novel strain of Bacillus subtilis EB120 shows high antagonistic activity for controlling various plant diseases including barley powdery mildew, cucumber powdery mildew, red pepper anthracnose, rice blast, tomato gray mold, tomato late blight and wheat leaf rust, it can be effectively used as a microbioside for biologically controlling the plant diseases.
Abstract:
A dielectric body and a method of producing the dielectric body are disclosed. In accordance with an embodiment of the present invention, the dielectric body using a polymer matrix and being expressed in the following Reaction Scheme 1 includes two or more kinds of ceramic fillers having different x values in the following Reaction Scheme 1. In this way, a dielectric body having a stable dielectric constant as well as a high dielectric constant against the change in temperature can be manufactured. Ba1-xSrxTiO3 [Reaction Scheme 1] whereas 0
Abstract:
A method of manufacturing a printed circuit board including embedded capacitors, composed of a polymer condenser laminate including a plurality of polymer condenser layers, each of which has a polymer sheet and a conductor pattern formed on the polymer sheet, and a via hole for interlayer connection therethrough, and a circuit layer formed on either surface or both surfaces of the polymer condenser laminate and having a circuit pattern and a via hole for interlayer connection therethrough. The printed circuit board manufactured by the method of the current invention has higher capacitance density per unit area than conventional embedded capacitor printed circuit boards, whereby capacitors having various capacitance values, such as multilayered ceramic capacitors having high capacitance, can be embedded in the printed circuit board, instead of being mounted thereon.
Abstract:
Disclosed is a light emitting diode unit, more particularly, a light emitting diode unit including a thermoplastic substrate, a light emitting diode, mounted on one surface of the thermoplastic substrate and a heat sink, directly adhered to the other surface of the thermoplastic substrate. With the present invention, the manufacturing cost and the manufacturing time of the light emitting diode unit can be reduced by allowing the heat sink, discharging the heat generated by the light emitting diode, to be directly adhered to the substrate on which the light emitting diode is mounted. Also, the heat discharging ability of the light emitting diode unit by using the heat sink directly adhered to the thermoplastic substrate.
Abstract:
An image forming apparatus includes at least one photoconductive medium on which an electrostatic latent image is formed; at least one developing device for developing the electrostatic latent image formed on the photoconductive medium with a developer to form a visible developer image, and a developing performance improving unit for controlling at least one of the photoconductive medium and the developing device to periodically form a patch developer image using developer that has uneven attributes (such as uneven coulomb per mass (Q/M)), and clean and remove the patch developer image. Accordingly, developer having uneven Q/M is periodically used for printing patch developer image and removed, thereby preventing the developer from being used for desired images, and thereby preventing inferior developing of desired images at the uneven-developer generating parts.
Abstract:
Disclosed herein is a printed circuit board including embedded capacitors, composed of a polymer condenser laminate including a plurality of polymer condenser layers, each of which has a polymer sheet and a conductor pattern formed on the polymer sheet, and a via hole for interlayer connection therethrough, and a circuit layer formed on either surface or both surfaces of the polymer condenser laminate and having a circuit pattern and a via hole for interlayer connection therethrough. The printed circuit board of the current invention has higher capacitance density per unit area than conventional embedded capacitor printed circuit boards, whereby capacitors having various capacitance values, such as multilayered ceramic capacitors having high capacitance, can be embedded in the printed circuit board, instead of being mounted thereon. Also, a method of manufacturing the printed circuit board including embedded capacitors is provided.
Abstract:
A method and apparatus for measuring the color tone density of an image output from a multipass color printer consumes a minimum of time by using a test pattern that includes test patches for all of the developing units in the printer. The method includes developing a test pattern, which includes test patches for all developing units, on an organic photo conductor, measuring the color tone density of the developed test pattern, and adjusting developing variables according to the measured color tone density. Accordingly, it is possible to reduce the time required to measure the color tone density of an image output from a multipass color printer, using the test pattern.