JP2020115188A5 - - Google Patents
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- JP2020115188A5 JP2020115188A5 JP2019006468A JP2019006468A JP2020115188A5 JP 2020115188 A5 JP2020115188 A5 JP 2020115188A5 JP 2019006468 A JP2019006468 A JP 2019006468A JP 2019006468 A JP2019006468 A JP 2019006468A JP 2020115188 A5 JP2020115188 A5 JP 2020115188A5
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- heating element
- fixing device
- switching
- power
- supplied
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- 238000010438 heat treatment Methods 0.000 claims description 82
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims 2
- 239000000758 substrate Substances 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
Description
（１）記録材に担持された未定着のトナー像を定着する定着装置であって、第１の抵抗値である第１の発熱体と、前記第１の抵抗値よりも抵抗値の大きい第２の抵抗値である第２の発熱体と、を含むヒータと、前記第１の発熱体又は前記第２の発熱体に電流を供給する、又は電流の供給を遮断する接続手段と、前記第１の発熱体又は前記第２の発熱体に電力を供給するための電力供給経路を切り替える切替手段と、前記定着装置の温度を検知する検知手段と、前記検知手段により検知された検知温度が目標温度となるように制御する制御手段と、を備え、前記制御手段は、前記第１の発熱体に電力が供給されている場合は、前記検知温度が前記目標温度となるように前記第１の発熱体に第１の電力を供給し、前記第２の発熱体に電力が供給されている場合は、前記検知温度が前記目標温度となるように前記第２の発熱体に前記第１の電力より多い第２の電力を供給する、ように前記接続手段を制御することを特徴とする定着装置。 (1) A fixing device for fixing an unfixed toner image carried on a recording material, the first heating element having a first resistance value and a second having a resistance value larger than that of the first resistance value. A heater including a second heating element having a resistance value of 2, a connecting means for supplying a current to the first heating element or the second heating element, or cutting off the supply of the current, and the first. Targets are a switching means for switching a power supply path for supplying power to the heating element 1 or the second heating element, a detection means for detecting the temperature of the fixing device, and a detection temperature detected by the detection means. The control means includes a control means for controlling the temperature so that the detected temperature becomes the target temperature when power is supplied to the first heating element. When the first power is supplied to the heating element and the power is supplied to the second heating element, the first power is supplied to the second heating element so that the detected temperature becomes the target temperature. A fixing device comprising controlling the connecting means so as to supply more second power.
Claims (15)
第１の抵抗値である第１の発熱体と、前記第１の抵抗値よりも抵抗値の大きい第２の抵抗値である第２の発熱体と、を含むヒータと、
前記第１の発熱体又は前記第２の発熱体に電流を供給する、又は電流の供給を遮断する接続手段と、
前記第１の発熱体又は前記第２の発熱体に電力を供給するための電力供給経路を切り替える切替手段と、
前記定着装置の温度を検知する検知手段と、
前記検知手段により検知された検知温度が目標温度となるように制御する制御手段と、
を備え、
前記制御手段は、前記第１の発熱体に電力が供給されている場合は、前記検知温度が前記目標温度となるように前記第１の発熱体に第１の電力を供給し、前記第２の発熱体に電力が供給されている場合は、前記検知温度が前記目標温度となるように前記第２の発熱体に前記第１の電力より多い第２の電力を供給する、ように前記接続手段を制御することを特徴とする定着装置。 A fixing device that fixes an unfixed toner image supported on a recording material.
A heater including a first heating element having a first resistance value and a second heating element having a second resistance value having a resistance value larger than that of the first resistance value.
A connecting means that supplies or cuts off the current supply to the first heating element or the second heating element.
A switching means for switching a power supply path for supplying power to the first heating element or the second heating element, and
A detection means for detecting the temperature of the fixing device and
A control means for controlling the detection temperature detected by the detection means to be the target temperature, and
Equipped with
When power is supplied to the first heating element, the control means supplies the first power to the first heating element so that the detected temperature becomes the target temperature, and the second heating element. When power is supplied to the heating element, the connection is such that a second power higher than the first power is supplied to the second heating element so that the detected temperature becomes the target temperature. A fixing device characterized by controlling means.
前記第２の発熱体は、前記第１の長さよりも短い第２の長さであることを特徴とする請求項１に記載の定着装置。 The first heating element has a first length and is
The fixing device according to claim 1, wherein the second heating element has a second length shorter than the first length.
前記第１の発熱体は、前記基板の短手方向の一方の端部に配置された一方の前記第１の発熱体と、他方の端部に配置された他方の前記第１の発熱体とであり、
前記短手方向において、一方の前記第１の発熱体、前記第３の発熱体、前記第４の発熱体、他方の前記第１の発熱体の順に配置されていることを特徴とする請求項３に記載の定着装置。 A substrate on which the first heating element, the third heating element, and the fourth heating element are arranged is provided.
The first heating element includes one heating element arranged at one end in the lateral direction of the substrate and the other first heating element arranged at the other end. And
It is characterized in that one of the first heating elements, the third heating element, the fourth heating element, and the other first heating element are arranged in this order in the lateral direction. The fixing device according to claim 3.
一方の前記第１の発熱体、他方の前記第１の発熱体及び前記第３の発熱体の他方の端部が電気的に接続された第２の接点と、
前記第３の発熱体及び前記第４の発熱体の一方の端部が電気的に接続された第３の接点と、
前記第４の発熱体の他方の端部が電気的に接続された第４の接点と、
を備えることを特徴とする請求項４に記載の定着装置。 A first contact to which one end of one end of the first heating element and the other end of the first heating element is electrically connected,
With a second contact to which one end of the first heating element, the other first heating element and the other end of the third heating element is electrically connected.
A third contact to which one end of the third heating element and the fourth heating element is electrically connected,
With a fourth contact to which the other end of the fourth heating element is electrically connected,
The fixing device according to claim 4, wherein the fixing device is provided.
前記制御手段は、
前記切替手段によって前記第１の発熱体から前記第２の発熱体又は前記第２の発熱体から前記第１の発熱体に切り替える際に、前記接続手段により切り替え前の発熱体に供給されていた電力を前記第２の記憶手段に記憶し、
前記切替手段によって前記第２の発熱体から前記第１の発熱体又は前記第１の発熱体から前記第２の発熱体に戻す際に、前記第２の記憶手段に記憶された前記切り替え前の発熱体に供給されていた電力を読み出して、読み出した前記切り替え前の発熱体に供給されていた電力となるように前記接続手段を制御することを特徴とする請求項６に記載の定着装置。 Equipped with a second storage means
The control means is
When switching from the first heating element to the second heating element or from the second heating element to the first heating element by the switching means, the heating element was supplied to the heating element before switching by the connecting means. The electric power is stored in the second storage means, and the power is stored in the second storage means.
Before the switching stored in the second storage means when returning from the second heating element to the first heating element or from the first heating element to the second heating element by the switching means. The fixing device according to claim 6, wherein the connecting means is controlled so as to read out the power supplied to the heating element and use the power supplied to the read-out heating element before switching.
前記切替手段によって前記第２の発熱体から前記第１の発熱体又は前記第１の発熱体から前記第２の発熱体に切り替える際に、前記接続手段により切り替え前の発熱体に供給されていた電力と、切り替え後の発熱体の抵抗値及び前記切り替え前の発熱体の抵抗値と、に基づいて、前記切り替え後の発熱体に供給する電力を求め、求めた電力となるように前記接続手段を制御することを特徴とする請求項６に記載の定着装置。 The control means is
When switching from the second heating element to the first heating element or from the first heating element to the second heating element by the switching means, the heating element was supplied to the heating element before switching by the connecting means. Based on the power, the resistance value of the heating element after switching, and the resistance value of the heating element before switching, the power to be supplied to the heating element after switching is obtained, and the connecting means is used so as to obtain the obtained power. The fixing device according to claim 6, further comprising controlling.
前記制御手段は、前記双方向サイリスタのデューティーを制御することにより前記第１の発熱体又は前記第２の発熱体に供給される電力を制御することを特徴とする請求項１から請求項１０のいずれか１項に記載の定着装置。 The connecting means is a bidirectional thyristor, and is
Claims 1 to 10, wherein the control means controls the electric power supplied to the first heating element or the second heating element by controlling the duty of the bidirectional thyristor. The fixing device according to any one item.
前記第１の回転体とともにニップ部を形成する第２の回転体と、
を備えることを特徴とする請求項１から請求項１１のいずれか１項に記載の定着装置。 The first rotating body heated by the heater and
A second rotating body forming a nip portion together with the first rotating body,
The fixing device according to any one of claims 1 to 11, wherein the fixing device comprises the above.
記録材上の画像は、前記フィルムと前記第２の回転体との間に形成されたニップ部で前記フィルムを介して加熱されることを特徴とする請求項１３に記載の定着装置。 The heater is arranged in the internal space of the film, and the film is sandwiched between the heater and the second rotating body.
13. The fixing device according to claim 13 , wherein the image on the recording material is heated via the film at a nip portion formed between the film and the second rotating body.
記録材上の未定着のトナー像を定着する請求項１から請求項１４のいずれか１項に記載の定着装置と、
を備えることを特徴とする画像形成装置。 An image forming means for forming an unfixed toner image on a recording material,
The fixing device according to any one of claims 1 to 14, for fixing an unfixed toner image on a recording material.
An image forming apparatus comprising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019006468A JP7353759B2 (en) | 2019-01-18 | 2019-01-18 | Fixing device and image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019006468A JP7353759B2 (en) | 2019-01-18 | 2019-01-18 | Fixing device and image forming device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020115188A JP2020115188A (en) | 2020-07-30 |
| JP2020115188A5 true JP2020115188A5 (en) | 2022-01-25 |
| JP7353759B2 JP7353759B2 (en) | 2023-10-02 |
Family
ID=71778577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019006468A Active JP7353759B2 (en) | 2019-01-18 | 2019-01-18 | Fixing device and image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7353759B2 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001100558A (en) | 1999-09-28 | 2001-04-13 | Canon Inc | Heating device and image forming device |
| JP3754861B2 (en) | 2000-03-07 | 2006-03-15 | キヤノン株式会社 | Heating device |
| JP4208772B2 (en) | 2004-06-21 | 2009-01-14 | キヤノン株式会社 | Fixing device and heater used in the fixing device |
| JP5995132B2 (en) | 2012-02-09 | 2016-09-21 | 株式会社リコー | Fixing apparatus and image forming apparatus |
| JP2013235181A (en) | 2012-05-10 | 2013-11-21 | Canon Inc | Image heating device and image forming device including the same |
| JP6150599B2 (en) | 2012-05-31 | 2017-06-21 | キヤノン株式会社 | Image forming apparatus |
| JP2015102833A (en) | 2013-11-28 | 2015-06-04 | キヤノン株式会社 | Image forming apparatus |
| JP2016024321A (en) | 2014-07-18 | 2016-02-08 | キヤノン株式会社 | Fixation device |
| JP6651875B2 (en) | 2016-02-03 | 2020-02-19 | コニカミノルタ株式会社 | Image forming device |
-
2019
- 2019-01-18 JP JP2019006468A patent/JP7353759B2/en active Active
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