JP2013062948A5 - - Google Patents

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JP2013062948A5
JP2013062948A5 JP2011199739A JP2011199739A JP2013062948A5 JP 2013062948 A5 JP2013062948 A5 JP 2013062948A5 JP 2011199739 A JP2011199739 A JP 2011199739A JP 2011199739 A JP2011199739 A JP 2011199739A JP 2013062948 A5 JP2013062948 A5 JP 2013062948A5
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power supply
voltage
supply control
output
resistor
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JP2013062948A (en
JP5911245B2 (en
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（１）インダクタと、電圧の入力側と前記インダクタとの間に接続され、前記インダクタを介して出力される出力電圧を制御する電源制御手段と、前記電源制御手段の電流流出端子にカソードが接続され、アノードが前記入力側と電圧の出力側の低電位側に接続された整流手段と、前記出力電圧に比例した電圧と基準電圧を比較した結果に応じて、前記電源制御手段をオン又はオフする差動増幅手段と、前記電源制御手段のオン状態が所定の時間、継続されるように、前記差動増幅手段の前記出力電圧に比例した電圧を前記所定の時間、変更する変更手段と、を備えたことを特徴とする電源装置。
（２）画像を形成するための画像形成手段と、前記画像形成手段に電力供給する電源と、を備え、前記電源は、インダクタと、電圧の入力側と前記インダクタとの間に接続され、前記インダクタを介して出力される出力電圧を制御する電源制御手段と、前記電源制御手段の電流流出端子にカソードが接続され、アノードが前記入力側と電圧の出力側の低電位側に接続された整流手段と、前記出力電圧に比例した電圧と基準電圧を比較した結果に応じて、前記電源制御手段をオン又はオフする差動増幅手段と、前記電源制御手段のオン状態が所定の時間、継続されるように、前記差動増幅手段の前記出力電圧に比例した電圧を前記所定の時間、変更する変更手段と、を備えたことを特徴とする画像形成装置。 (1) and the inductor is connected between the input side and the inductor voltage, and power control means for controlling an output voltage outputted through the inductor, the cathode to the current output terminal of said power supply control means The rectifying means connected and having the anode connected to the low potential side of the input side and the output side of the voltage, and depending on the result of comparing the voltage proportional to the output voltage and a reference voltage, the power control means is turned on or Differential amplifying means for turning off, and changing means for changing a voltage proportional to the output voltage of the differential amplifying means for the predetermined time so that the ON state of the power supply control means is continued for a predetermined time; , power device characterized by comprising a.
(2) An image forming unit for forming an image, and a power source for supplying power to the image forming unit, the power source being connected between an inductor, a voltage input side and the inductor, Power supply control means for controlling the output voltage output through the inductor, and a rectifier in which a cathode is connected to a current outflow terminal of the power supply control means, and an anode is connected to the low potential side of the input side and the output side of the voltage And a differential amplifying means for turning on or off the power supply control means and an on state of the power supply control means is continued for a predetermined time in accordance with a result of comparing a reference voltage with a voltage proportional to the output voltage. An image forming apparatus comprising: a changing unit that changes a voltage proportional to the output voltage of the differential amplifying unit for the predetermined time.

Claims (9)

インダクタと、
電圧の入力側と前記インダクタとの間に接続され、前記インダクタを介して出力される出力電圧を制御する電源制御手段と、
前記電源制御手段の電流流出端子にカソードが接続され、アノードが前記入力側と電圧の出力側の低電位側に接続された整流手段と、
前記出力電圧に比例した電圧と基準電圧を比較した結果に応じて、前記電源制御手段をオン又はオフする差動増幅手段と、
前記電源制御手段のオン状態が所定の時間、継続されるように、前記差動増幅手段の前記出力電圧に比例した電圧を前記所定の時間、変更する変更手段と、
を備えたことを特徴とする電源装置。 And the inductor,
A power supply control unit that is connected between a voltage input side and the inductor and controls an output voltage output via the inductor;
A rectifier having a cathode connected to a current outflow terminal of the power supply control unit and an anode connected to the low potential side of the input side and the output side of the voltage ;
Differential amplification means for turning on or off the power supply control means according to a result of comparing a voltage proportional to the output voltage and a reference voltage;
Changing means for changing a voltage proportional to the output voltage of the differential amplifying means for the predetermined time so that the ON state of the power supply control means is continued for a predetermined time;
Power supply, characterized in that it comprises a. 前記変更手段は、抵抗とコンデンサによる時定数回路を有し、
前記所定の時間は、前記時定数回路の時定数により決定されることを特徴とする請求項１に記載の電源装置。 The changing means has a time constant circuit composed of a resistor and a capacitor,
The power supply device according to claim 1, wherein the predetermined time is determined by a time constant of the time constant circuit. 前記変更手段の前記時定数回路を構成する前記抵抗は、制御信号によりオン又はオフされるスイッチ手段に直列に接続された第１の抵抗と、前記第１の抵抗と並列に接続された第２の抵抗の２つの抵抗からなり、
前記抵抗の抵抗値は、前記スイッチ手段がオンのときは、第１の抵抗と第２の抵抗が並列に接続された場合の抵抗値であり、前記スイッチ手段がオフのときは、第２の抵抗の抵抗値であり、
前記所定の時間は、前記制御信号による前記スイッチ手段のオン又はオフにより変更されることを特徴とする請求項２に記載の電源装置。 The resistor constituting the time constant circuit of the changing means includes a first resistor connected in series to a switch means turned on or off by a control signal, and a second resistor connected in parallel with the first resistor. Consisting of two resistors,
The resistance value of the resistor is the resistance value when the first resistor and the second resistor are connected in parallel when the switch means is on, and the second resistance value when the switch means is off. Resistance value of the resistor,
3. The power supply device according to claim 2, wherein the predetermined time is changed by turning on or off the switch unit according to the control signal. 前記制御信号は、負荷の状態に応じて、前記スイッチ手段をオン又はオフすることを特徴とする請求項３に記載の電源装置。   The power supply apparatus according to claim 3, wherein the control signal turns on or off the switch unit according to a load state. 前記差動増幅手段は、前記出力電圧に比例した電圧が前記基準電圧より高いときには前記電源制御手段をオフし、前記出力電圧に比例した電圧が前記基準電圧より低いときには前記電源制御手段をオンするコンパレータであることを特徴とする請求項１ないし４のいずれか１項に記載の電源装置。   The differential amplifier means turns off the power supply control means when a voltage proportional to the output voltage is higher than the reference voltage, and turns on the power supply control means when a voltage proportional to the output voltage is lower than the reference voltage. The power supply device according to claim 1, wherein the power supply device is a comparator. 前記インダクタは、一端が前記電源制御手段の電流流出端子に接続され、他端が前記出力側に接続されたコンデンサ、及び前記差動増幅手段の前記出力電圧に比例した電圧の入力端子に接続されたチョークコイルであり、
前記電源制御手段は、電流流入端子が前記入力側に接続され、電流流出端子が前記インダクタと前記変更手段に接続され、制御端子が前記差動増幅手段の出力端子に接続されたスイッチング素子であり、
前記変更手段は、前記電源制御手段がオンしたときに前記電流流出端子に発生する電圧を入力とし、前記差動増幅手段の前記基準電圧より低い前記出力電圧に比例した電圧を出力とするワンショットマルチバイブレータであることを特徴とする請求項１ないし５のいずれか１項に記載の電源装置。 The inductor has one end connected to the current outflow terminal of the power supply control means, the other end connected to a capacitor connected to the output side , and an input terminal of a voltage proportional to the output voltage of the differential amplification means. Choke coil
The power supply control means is a switching element having a current inflow terminal connected to the input side, a current outflow terminal connected to the inductor and the changing means, and a control terminal connected to the output terminal of the differential amplifying means. ,
The changing means receives a voltage generated at the current outflow terminal when the power supply control means is turned on, and outputs a voltage proportional to the output voltage lower than the reference voltage of the differential amplifying means as an output. The power supply device according to claim 1, wherein the power supply device is a multivibrator. 画像を形成するための画像形成手段と、
前記画像形成手段に電力供給する電源と、を備え、
前記電源は、
インダクタと、
電圧の入力側と前記インダクタとの間に接続され、前記インダクタを介して出力される出力電圧を制御する電源制御手段と、
前記電源制御手段の電流流出端子にカソードが接続され、アノードが前記入力側と電圧の出力側の低電位側に接続された整流手段と、
前記出力電圧に比例した電圧と基準電圧を比較した結果に応じて、前記電源制御手段をオン又はオフする差動増幅手段と、
前記電源制御手段のオン状態が所定の時間、継続されるように、前記差動増幅手段の前記出力電圧に比例した電圧を前記所定の時間、変更する変更手段と、
を備えたことを特徴とする画像形成装置。 An image type Narute stages for forming an image,
A power supply for supplying power to the image forming means ,
The power supply is
An inductor;
A power supply control unit that is connected between a voltage input side and the inductor and controls an output voltage output via the inductor;
A rectifier having a cathode connected to a current outflow terminal of the power supply control unit and an anode connected to the low potential side of the input side and the output side of the voltage;
Differential amplification means for turning on or off the power supply control means according to a result of comparing a voltage proportional to the output voltage and a reference voltage;
Changing means for changing a voltage proportional to the output voltage of the differential amplifying means for the predetermined time so that the ON state of the power supply control means is continued for a predetermined time;
An image forming apparatus comprising: 前記画像形成手段の動作を制御するコントローラを備え、A controller for controlling the operation of the image forming means;
前記電源は前記コントローラに電力を供給することを特徴とする請求項７に記載の画像形成装置。The image forming apparatus according to claim 7, wherein the power supply supplies power to the controller. 前記画像形成手段を駆動する駆動手段を備え、Drive means for driving the image forming means;
前記電源は前記駆動手段に電力を供給することを特徴とする請求項７または８に記載の画像形成装置。The image forming apparatus according to claim 7, wherein the power supply supplies power to the driving unit.
JP2011199739A 2011-09-13 2011-09-13 Power supply device and image forming apparatus Expired - Fee Related JP5911245B2 (en)

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Application Number Priority Date Filing Date Title
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Publications (3)

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JP2013062948A JP2013062948A (en) 2013-04-04
JP2013062948A5 true JP2013062948A5 (en) 2014-10-30
JP5911245B2 JP5911245B2 (en) 2016-04-27

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