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US 8,283,806 B2Granted
High voltage power supply
AssigneeSamsung Electronics Co., Ltd.
InventorChul-woo Oh
Life of this patent
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Abstract
A high voltage power supply (HVPS) including first and second high voltage output controllers controlling output of a high voltage output signal; and a plurality of transformers transforming an output signal provided from the first and second high voltage output controller, disposed outside of the first and second high voltage controllers on the substrate, wherein output terminals in the secondary sides of the plurality of transformers are disposed along the edge of the substrate. Therefore, the volume of a system can be minimized by arranging circuits in each component for high voltage output in parallel, and spark and discharge can be reduced by minimizing interference between the primary sides and the secondary sides of the components for high voltage output, thereby preventing damage to a product.
Claims21
An image forming apparatus comprising:
- an image forming unit to form an image onto a printable medium;
- and
- a high voltage power supply (HVPS) to supply power to the image forming unit, the HVPS comprising:
- a substrate having a first direction, the substrate having a first edge portion, a first peripheral portion, a central region, a second peripheral portion, and a second edge portion with respect to the first direction,
- first and second high voltage output controllers disposed on the substrate, the first high voltage output controller located closer to the first peripheral portion than the second high voltage output controller,
- a plurality of first transformers, corresponding to the first high voltage output controller, disposed on the first peripheral portion of the substrate for transforming high voltage outputs based on control signals output by the first high voltage output controller,
- a plurality of second transformers, corresponding to the second high voltage output controller, disposed on the second peripheral portion of the substrate for transforming high voltage outputs based on control signals output by the second high voltage output controller,
- a plurality of first output terminals disposed on the first edge portion and coupled to the first transformers, and
- a plurality of second output terminals disposed on the second edge portion and coupled to the second transformers.
6 more elements
An image forming apparatus comprising:
- an image forming unit to form an image onto a printable medium;
- and
- a high voltage power supply (HVPS) to supply power to the image forming unit, the HVPS comprising:
- an input connector disposed on a substrate;
- a high voltage output controller disposed on the substrate to control an output of high voltage output signals using signals inputted through the input connector;
- a plurality of transformers disposed on the substrate to transform the output signals provided from the high voltage output controller;
- and
- a plurality of output terminals connected to secondary sides of the plurality of transformers, respectively,
- wherein the high voltage output controller is disposed on the substrate coupled to the input connector via connection lines,
- wherein each of the plurality of output terminals is disposed along a first edge region and a second edge region of the substrate, and
- wherein the input connector, the high voltage output controller, the plurality of transformers, and the output terminals of the transformers are disposed on the substrate such that the connection lines coupled between the input connector and the high voltage output controllers do not pass adjacent to the output terminals of the transformers.
8 more elements
A high voltage power supply (HVPS) comprising:
- a substrate;
- an input connector disposed on the substrate;
- a first high voltage output controller disposed on a first section of the substrate to control first high voltage output signals;
- a second high voltage output controller disposed on a second section of the substrate to control second high voltage output signals;
- a first plurality of transformers disposed on the first section of the substrate between a first edge of the substrate and the first high voltage output controller to transform the first output signals;
- a second plurality of transformers disposed on the second section of the substrate to transform the second output signals;
- first output terminals connected to the secondary sides of the first plurality of transformers and arranged along the first edge of the substrate;
- and
- second output terminals connected to the secondary sides of the second plurality of transformers and arranged along the second edge of the substrate;
- wherein the input connector, the first high voltage output controller, the second high voltage output controller, the first output terminals and the second output terminals are arranged on the substrate such that connection lines coupled between the input connector and the high voltage output controllers do not pass adjacent to the first output terminals and the second output terminals.
7 more elements
An image forming apparatus comprising:
- an image forming unit to form an image onto a printable medium;
- and
- a high voltage power supply to supply power to the image forming unit and including:
- a substrate having a first peripheral portion and a second peripheral portion located opposite to the first peripheral portion;
- first and second high voltage output controllers disposed on the substrate for controlling output of high voltage output signals;
- and
- an input connector coupled to the first and second high voltage output controllers via connection lines;
- a plurality of transformers disposed on the substrate for transforming the high voltage output signals provided from corresponding ones of the first and second high voltage output controllers,
- wherein a distance from each of the plurality of transformers corresponding to the first high voltage output controller to the first peripheral portion of the substrate is less than a distance from the first high voltage output controller to the first peripheral portion of the substrate, and a distance from each of the plurality of transformers corresponding to the second high voltage output controller to the second peripheral portion of the substrate is less than a distance from the second high voltage output controller to the second peripheral portion of the substrate, and
- wherein output terminals of each of the plurality of transformers corresponding to the first high voltage output controller are disposed along the first peripheral portion of the substrate and output terminals of each of the plurality of transformers corresponding to the second high voltage output controller are disposed along the second peripheral portion of the substrate opposite the first peripheral portion of the substrate,
- wherein a separation distance between any two of the output terminals, associated with a high voltage output equal to or greater than 5 kV, is greater than 10 mm,
- wherein the connection lines coupled between the input connector and the first and second high voltage output controllers are arranged so as to extend along the substrate without passing adjacent to the output terminals of the transformers.
9 more elements
Dependencies are inferred from the claim text.