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Power circuit and image forming apparatus

A technology of power supply circuit and power supply circuit, which is applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical recording process using charge pattern, etc., and can solve the problem of time-consuming

Inactive Publication Date: 2018-03-13
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power consumption of the control unit is smaller than that of the drive unit, so there is a problem that it takes time until the operation is completely stopped after the main switch is turned off.

Method used

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  • Power circuit and image forming apparatus
  • Power circuit and image forming apparatus
  • Power circuit and image forming apparatus

Examples

Experimental program
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Embodiment Construction

[0012] Hereinafter, a power supply circuit and an image forming apparatus according to an embodiment will be described with reference to the drawings.

[0013] First, an image forming apparatus 1 according to an embodiment will be described. figure 1 and figure 2 It is an explanatory diagram showing a configuration example of the image forming apparatus 1 according to one embodiment. figure 1 It is an explanatory diagram showing a configuration example of a driving unit of the image forming apparatus 1 . figure 2 It is a block diagram showing the functions of the image forming apparatus 1 as modules.

[0014] The image forming apparatus 1 is an apparatus that forms an image on a recording medium such as paper using toner. The image forming apparatus 1 performs, for example, various processes such as image formation while conveying recording paper P as a recording medium. The image forming device 1 is, for example, a laser printer, an inkjet printer, or other printing dev...

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PUM

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Abstract

In accordance with an embodiment, a power circuit for supplying electric power to an image forming apparatus equipped with a drive system and a control system comprises a first power supply circuit configured to supply the electric power to the control system; a second power supply circuit configured to supply the electric power to the drive system; a first capacitor configured to smooth the electric power from a commercial power supply and to supply the smoothed electric power to the first power supply circuit; and a second capacitor having a larger capacity than the first capacitor and configured to smooth the electric power from the commercial power supply and to supply the smoothed electric power to the second power supply circuit.

Description

technical field [0001] Embodiments of the present invention relate to a power supply circuit and an image forming apparatus. Background technique [0002] The image forming apparatus performs printing according to a print request. The image forming apparatus has a driving unit such as a transport unit that transports paper, an image forming unit that forms an image on the paper, and a control unit that controls the operation of the driving unit. The image forming apparatus has operation modes such as a normal mode in which the driving unit is maintained in a state where the driving unit can be operated, and a standby mode in which the driving unit is stopped and the operation of the control unit is maintained. [0003] A power supply unit for an image forming apparatus performs full-wave rectification of a commercial power input through a diode bridge. In the power supply unit, a power factor correction (Power Factor Correction) circuit operates so that the phases of the i...

Claims

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Application Information

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IPC IPC(8): G03G15/00
CPCG03G15/5004H02M1/4225G03G15/80H02M3/33507Y02B70/10H02M1/0006H02M1/0032H02M1/008H02M1/0058
Inventor 荻岛拓哉山边卓日下丰康
Owner KK TOSHIBA
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