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:
An image forming apparatus includes a moving unit including a conveyer belt which moves a printing medium, an attraction unit to attract the printing medium to the conveyer belt, a transferring unit to transfer developer onto the printing medium, a power supply which supplies transfer power and attraction power to the transferring unit and the attraction unit, and a controller which controls the power supply to supply only one of the transfer power and the attraction power in accordance with a location of the printing medium.
Abstract:
A method of manufacturing a chip capacitor according to an aspect of the invention may include: preparing a capacitor lamination including a dielectric sheet formed of a composite having ceramic powder and a polymer mixed with each other, and first and second internal electrodes formed on both surfaces of the dielectric sheet at predetermined intervals; forming covering layers formed of an insulating material on both surfaces of the capacitor lamination; forming at least one first opening and at least one second opening in the capacitor lamination having the covering layers formed thereon to expose the first and second internal electrodes, respectively; forming plating layers in the first and second openings, the plating layers connected to the first and second internal electrodes; and dicing the result into chips on the basis of the first and second openings so that the plating layers formed in the first and second openings are provided as first and second external terminals.
Abstract:
Disclosed is an insulating material for a printed circuit board, including a liquid crystal polyester resin and ceramic powder, thus exhibiting a temperature coefficient of capacitance ranging from −300 to +300 ppm/° C. in the temperature range of −55˜125° C. and a dielectric constant ranging from 5 to 40. This insulating material has superior dielectric properties, and a small change in dielectric constant depending on the change in temperature, and thus exhibits high reliability when applied to high-frequency circuits.
Abstract:
A manufacturing method of a printed circuit board is disclosed. The method may include: forming a circuit pattern on a surface of an insulation layer, made primarily from a thermoplastic resin, such that the circuit pattern protrudes from the surface of the insulation layer, and burying the circuit pattern in the insulation layer by pressing the circuit pattern.
Abstract:
An image forming apparatus includes an image former which comprises a photosensitive body and a developing device to apply a developer to the photosensitive body, a power supply which supplies developing voltage to the developing device, a detector which detects a density of an image formed by the image former, and a controller which controls the power supply to adjust a level of the developing voltage if the detected density is out of a permissible range.
Abstract:
An image forming apparatus includes a moving unit including a conveyer belt which moves a printing medium, an attraction unit to attract the printing medium to the conveyer belt, a transferring unit to transfer developer onto the printing medium, a power supply which supplies transfer power and attraction power to the transferring unit and the attraction unit, and a controller which controls the power supply to supply only one of the transfer power and the attraction power in accordance with a location of the printing medium.
Abstract:
A charging voltage supply and a method for supplying a charging voltage are provided. The charging voltage supply generates a voltage and branches the generated voltage to at least one charging roller according to voltage applied to a transfer roller. Accordingly, the charging voltage supply can compensate for the charging voltage in view of the reduction of a charging potential of a photosensitive body according to the transfer voltage.
Abstract:
A method and apparatus for applying a developing bias voltage of an image forming apparatus are provided. When an image is formed on paper, an AC bias voltage and a DC bias voltage are applied in an overlapping manner to the developing roller, and when an image is not formed on paper, the AC bias voltage is turned off and only the DC bias voltage is applied to the developing roller.
Abstract:
Provided is an electro-photographic image forming apparatus and a method of determining a charging voltage thereof. The electro-photographic image forming apparatus includes: a charge roller for supplying a voltage of a predetermined level to a photoconductor; a transfer roller for transferring a developed image to a printing media by using a developer; a high voltage power supply for supplying a charging voltage at a preset level and a transfer voltage at a preset level to the charge roller and the transfer roller, respectively; and a controller for predicting a charged electric potential deviation based on the transfer voltage to be supplied by the high voltage power supply and for determining a charging voltage level to correct for the predicted charged electric potential deviation. Therefore, the deviation of the charged electric potential caused by the transfer voltage is prevented.