JP2020112779A5 - - Google Patents
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- JP2020112779A5 JP2020112779A5 JP2019201765A JP2019201765A JP2020112779A5 JP 2020112779 A5 JP2020112779 A5 JP 2020112779A5 JP 2019201765 A JP2019201765 A JP 2019201765A JP 2019201765 A JP2019201765 A JP 2019201765A JP 2020112779 A5 JP2020112779 A5 JP 2020112779A5
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- JP
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- switch element
- image forming
- forming apparatus
- power supply
- control board
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- 238000003745 diagnosis Methods 0.000 claims description 9
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
Description
本発明の画像形成装置は、電源電圧を生成する電源回路を有する電源基板と、前記電源基板から供給される前記電源電圧が複数に分配され、分配された電源電圧毎に電源供給と遮断を行う複数のスイッチ素子と、複数に分配した電源電圧により画像を形成するための複数の負荷を駆動するドライバ回路とを有するドライバ基板と、前記ドライバ基板の動作を制御するエンジン制御基板と、を備え、前記複数のスイッチ素子は、前記電源基板から前記電源電圧が供給される第１スイッチ素子と、前記第１スイッチ素子から出力される電源電圧が分配されて供給される第２スイッチ素子とを含み、前記エンジン制御基板は、画像形成装置が起動するときに前記第１スイッチ素子が故障しているか否かを判定する故障診断を行い、前記複数の負荷のいずれかに異常が生じたときに前記第２スイッチ素子が故障しているか否かを判定する故障診断を行うことを特徴とする。 An image forming apparatus according to the present invention includes a power supply board having a power supply circuit for generating a power supply voltage, the power supply voltage supplied from the power supply board being distributed to a plurality of power supply voltages, and power supply and cutoff being performed for each of the distributed power supply voltages. a driver board having a plurality of switch elements and a driver circuit for driving a plurality of loads for forming an image with a plurality of distributed power supply voltages; and an engine control board for controlling the operation of the driver board, The plurality of switch elements includes a first switch element to which the power supply voltage is supplied from the power supply board, and a second switch element to which the power supply voltage output from the first switch element is distributed and supplied , The engine control board performs a failure diagnosis to determine whether or not the first switch element is out of order when the image forming apparatus is started, and when an abnormality occurs in any one of the plurality of loads, the first switch element is switched to the first switch element. A fault diagnosis is performed to determine whether or not the two switch elements are faulty .
Claims (11)
前記電源基板から供給される前記電源電圧が複数に分配され、分配された電源電圧毎に電源供給と遮断を行う複数のスイッチ素子と、複数に分配した電源電圧により画像を形成するための複数の負荷を駆動するドライバ回路とを有するドライバ基板と、
前記ドライバ基板の動作を制御するエンジン制御基板と、を備え、
前記複数のスイッチ素子は、前記電源基板から前記電源電圧が供給される第１スイッチ素子と、前記第１スイッチ素子から出力される電源電圧が分配されて供給される第２スイッチ素子とを含み、
前記エンジン制御基板は、画像形成装置が起動するときに前記第１スイッチ素子が故障しているか否かを判定する故障診断を行い、前記複数の負荷のいずれかに異常が生じたときに前記第２スイッチ素子が故障しているか否かを判定する故障診断を行うことを特徴とする、
画像形成装置。 a power supply board having a power supply circuit that generates a power supply voltage;
The power supply voltage supplied from the power supply board is divided into a plurality of parts, a plurality of switching elements for supplying and cutting off the power supply for each of the divided power supply voltages, and a plurality of switching elements for forming an image by the plurality of distributed power supply voltages. a driver board having a driver circuit for driving a load;
and an engine control board that controls the operation of the driver board,
The plurality of switch elements includes a first switch element to which the power supply voltage is supplied from the power supply board, and a second switch element to which the power supply voltage output from the first switch element is distributed and supplied ,
The engine control board performs failure diagnosis to determine whether or not the first switch element is out of order when the image forming apparatus is started, and detects the failure of the first switch element when an abnormality occurs in any of the plurality of loads. 2 characterized by performing a failure diagnosis to determine whether the switch element is out of order,
Image forming device.
請求項１記載の画像形成装置。 When the image forming apparatus is started, the engine control board conducts the first switch element as a failure diagnosis of the first switch element, and detects the power supply voltage based on the voltage value of the power supply voltage output from the first switch element. characterized by determining whether or not the first switch element is an open failure in which the first switch element does not become conductive,
The image forming apparatus according to claim 1.
請求項１又は２記載の画像形成装置。 When the image forming apparatus is started, the engine control board cuts off the first switch element as a failure diagnosis of the first switch element, and based on the voltage value of the power supply voltage output from the first switch element. characterized by determining whether or not the first switch element is a short failure that does not turn off,
3. The image forming apparatus according to claim 1.
請求項１～３のいずれか１項記載の画像形成装置。 The engine control board conducts the first switch element and cuts off the second switch element as a failure diagnosis of the second switch element when the image forming apparatus is started. Determining whether the second switch element is faulty based on the voltage value of the power supply voltage output from
The image forming apparatus according to any one of claims 1 to 3.
前記エンジン制御基板は、前記画像形成装置が起動するときに前記第１スイッチ素子がオープン故障であると判定されず、且つ前記メモリに故障を表す情報が記憶されている場合に、前記第１スイッチ素子及び前記第２スイッチ素子がショート故障であるか否かの判定を行うことを特徴とする、
請求項３又は４記載の画像形成装置。 further comprising a memory for storing information indicating whether or not one of the first switch element and the second switch element is faulty,
When the image forming apparatus is not determined to have an open failure in the first switch element when the image forming apparatus is started, and the information indicating the failure is stored in the memory, the engine control board controls the first switch to Characterized by determining whether the element and the second switch element are short-circuited,
5. The image forming apparatus according to claim 3 or 4.
請求項１～５のいずれか１項記載の画像形成装置。 If the first switch element and the second switch element are not out of order when the image forming apparatus is started, the engine control board brings the first switch element and the second switch element into conduction to perform the characterized by performing a start-up process of the image forming apparatus,
The image forming apparatus according to any one of claims 1 to 5.
請求項１～６のいずれか１項記載の画像形成装置。 When the engine control board detects an abnormality in the operation of the load while the load is forming an image, the engine control board turns on the second switch element, and the voltage of the power supply voltage output from the second switch element is detected. Determining whether the second switch element has an open failure based on the value,
The image forming apparatus according to any one of claims 1 to 6.
請求項１～７のいずれか１項記載の画像形成装置。 When the power of the image forming apparatus is turned off, the engine control board conducts the first switch element and cuts off the second switch element as failure diagnosis of the second switch element. Determining whether the second switch element has a short failure based on the voltage value of the power supply voltage output from the second switch element,
The image forming apparatus according to any one of claims 1 to 7.
請求項１～８のいずれか１項記載の画像形成装置。 When the power of the image forming apparatus is turned off, the engine control board cuts off the first switch element as a failure diagnosis of the first switch element, and the voltage of the power supply voltage output from the first switch element characterized by determining whether the first switch element has a short failure based on the value,
The image forming apparatus according to any one of claims 1 to 8.
前記エンジン制御基板は、前記画像形成装置の電源がオフされるときに、前記第１スイッチ素子及び前記第２スイッチ素子のいずれかが故障していれば、前記メモリに故障していることを表す情報を記憶することを特徴とする、
請求項１～９のいずれか１項記載の画像形成装置。 further comprising a memory for storing information indicating whether or not one of the first switch element and the second switch element is faulty,
The engine control board indicates that the memory is faulty if either the first switch element or the second switch element is faulty when the power of the image forming apparatus is turned off. characterized by storing information,
The image forming apparatus according to any one of claims 1 to 9.
前記エンジン制御基板は、前記画像形成装置の電源がオフされるときに、前記第１スイッチ素子及び前記第２スイッチ素子が正常であれば、前記メモリに故障していないことを表す情報を記憶することを特徴とする、
請求項１～９のいずれか１項記載の画像形成装置。 further comprising a memory for storing information indicating whether or not one of the first switch element and the second switch element is faulty,
The engine control board stores information indicating that there is no failure in the memory if the first switch element and the second switch element are normal when the power of the image forming apparatus is turned off. characterized by
The image forming apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/724,802 US10795300B2 (en) | 2019-01-07 | 2019-12-23 | Image forming apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019000644 | 2019-01-07 | ||
| JP2019000644 | 2019-01-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020112779A JP2020112779A (en) | 2020-07-27 |
| JP2020112779A5 true JP2020112779A5 (en) | 2022-11-15 |
| JP7475837B2 JP7475837B2 (en) | 2024-04-30 |
Family
ID=71667006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019201765A Active JP7475837B2 (en) | 2019-01-07 | 2019-11-06 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7475837B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4400072B2 (en) | 2003-03-14 | 2010-01-20 | 富士ゼロックス株式会社 | Power supply unit that performs control by status monitoring |
| JP2005157204A (en) | 2003-11-28 | 2005-06-16 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| US8855510B2 (en) | 2010-12-02 | 2014-10-07 | Samsung Electronics Co., Ltd. | Image forming apparatus and fixing unit control method thereof |
| JP6256251B2 (en) | 2014-08-21 | 2018-01-10 | 京セラドキュメントソリューションズ株式会社 | Power management circuit and image forming apparatus having the same |
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2019
- 2019-11-06 JP JP2019201765A patent/JP7475837B2/en active Active
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