JP2001075392A5 - - Google Patents
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- Publication number
- JP2001075392A5 JP2001075392A5 JP1999247644A JP24764499A JP2001075392A5 JP 2001075392 A5 JP2001075392 A5 JP 2001075392A5 JP 1999247644 A JP1999247644 A JP 1999247644A JP 24764499 A JP24764499 A JP 24764499A JP 2001075392 A5 JP2001075392 A5 JP 2001075392A5
- Authority
- JP
- Japan
- Prior art keywords
- heat
- fixing
- nip area
- contact nip
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Description
【0013】
次に、上述した技術的手段の作用について説明する。
図1において、定着部材1は加熱源1aにより加熱され、一方、無端ベルト2は、圧力付与部材3によって前記定着部材1側へと押圧される。
そして、前記定着部材1及び無端ベルト2は回転し、両者の間に未定着トナー像Tを担持した記録媒体Kが挟持されて定着される。
ここで、定着部材1との対向部を通過した無端ベルト2は、保持部材4の外周面に近接した状態で移動することとなるが、無端ベルト2内面と対向する保持部材4の外周面には断熱層5が形成されているため、無端ベルト2に蓄積された熱が保持部材4に奪われて無端ベルト2の温度低下を生じるという事態は回避される。[0013]
Next, the operation of the above-described technical means will be described.
In FIG. 1, the fixing member 1 is heated by a heat source 1 a, while the endless belt 2 is pressed by the pressure applying member 3 toward the fixing member 1.
Then, the fixing member 1 and the endless belt 2 are rotated, and the recording medium K carrying the unfixed toner image T is sandwiched and fixed between them.
Here, although the endless belt 2 which has passed through the portion facing the fixing member 1 moves in a state close to the outer peripheral surface of the holding member 4, the outer peripheral surface of the holding member 4 facing the inner surface of the endless belt 2 Since the heat insulating layer 5 is formed, the heat accumulated in the endless belt 2 is prevented from being taken by the holding member 4 and the temperature of the endless belt 2 is lowered.
【0021】
次に、本実施の形態に係る定着装置の定着プロセスについて説明する。
未定着トナー像Tが担持された用紙Pが接触ニップ域nを通過するとき、前記未定着トナー像Tは、ハロゲンランプ13による加熱ロール10からの熱と、接触ニップ域nから受ける圧力とにより用紙P上に定着される。
このとき、接触ニップ域nでは、定着ベルト20も加熱ロール10からの熱で加熱される。
そして、接触ニップ域nを通過した定着ベルト20は、回動を続け再び接触ニップ域nに到達する。
この間、定着ベルト20内部に蓄積された熱は、表裏面から放出されることとなるが、本実施の形態においては、定着ベルト20の内面側に配設されるパッド支持部材23の外周面に断熱層24が形成されていることから、定着ベルト20内部に蓄積された熱がアルミニウム製で熱容量の大きいパッド支持部材23に奪われて、定着ベルト20の温度が著しく低下するという事態は回避されることとなる。
従って、再度接触ニップ域nに到達した定着ベルト20を再加熱するための熱量は少なくて済むこととなり、ウォーミングアップに要する時間や生産性が低下することはなく、また、再加熱に必要な電力も少なくて済むこととなる。
尚、本実施の形態では、圧力付与部材として、第一加圧パッド21及び第二加圧パッド22を組み合わせて用いるようにしていたが、これに限られるものではなく、一種類の加圧パッドを用いるようにしても良いことは勿論である。[0021]
Next, the fixing process of the fixing device according to the present embodiment will be described.
When the sheet P carrying the unfixed toner image T passes through the contact nip area n, the unfixed toner image T is generated by the heat from the heating roll 10 by the halogen lamp 13 and the pressure received from the contact nip area n. The sheet P is fixed.
At this time, the fixing belt 20 is also heated by the heat from the heating roll 10 in the contact nip area n.
Then, the fixing belt 20 which has passed through the contact nip area n continues rotating and reaches the contact nip area n again.
During this time, the heat accumulated in the fixing belt 20 is released from the front and back, but in the present embodiment, the heat is accumulated on the outer peripheral surface of the pad supporting member 23 disposed on the inner surface side of the fixing belt 20. Since the heat insulating layer 24 is formed, the heat stored in the fixing belt 20 is absorbed by the pad supporting member 23 made of aluminum and having a large heat capacity, and the situation in which the temperature of the fixing belt 20 is significantly reduced is avoided. The Rukoto.
Therefore, the amount of heat for reheating the fixing belt 20 which has reached the contact nip area n again is small, the time required for warming up and productivity do not decrease, and the power required for reheating is also reduced. It will be less.
In this embodiment, the pressure applying member, had been so used in combination of the first pressure pad 21 and the second pressure pad 22 is not limited to this, one type of pressure Of course, a pad may be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24764499A JP3695513B2 (en) | 1999-09-01 | 1999-09-01 | Fixing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24764499A JP3695513B2 (en) | 1999-09-01 | 1999-09-01 | Fixing device |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2001075392A JP2001075392A (en) | 2001-03-23 |
JP2001075392A5 true JP2001075392A5 (en) | 2004-12-02 |
JP3695513B2 JP3695513B2 (en) | 2005-09-14 |
Family
ID=17166569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24764499A Expired - Fee Related JP3695513B2 (en) | 1999-09-01 | 1999-09-01 | Fixing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3695513B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006030589A (en) * | 2004-07-16 | 2006-02-02 | Ricoh Co Ltd | Heating member, fixing device and image forming apparatus |
JP5617376B2 (en) * | 2010-06-22 | 2014-11-05 | コニカミノルタ株式会社 | Fixing apparatus and image forming apparatus |
JP5852436B2 (en) * | 2011-12-27 | 2016-02-03 | キヤノン株式会社 | Image heating device |
JP6131412B2 (en) * | 2014-03-20 | 2017-05-24 | コニカミノルタ株式会社 | Fixing device |
-
1999
- 1999-09-01 JP JP24764499A patent/JP3695513B2/en not_active Expired - Fee Related
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