JPH0221666U - - Google Patents
Info
- Publication number
- JPH0221666U JPH0221666U JP9949488U JP9949488U JPH0221666U JP H0221666 U JPH0221666 U JP H0221666U JP 9949488 U JP9949488 U JP 9949488U JP 9949488 U JP9949488 U JP 9949488U JP H0221666 U JPH0221666 U JP H0221666U
- Authority
- JP
- Japan
- Prior art keywords
- inner tube
- heater
- heating roller
- heating
- fixing device
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
Description
第１図は本考案の定着装置の一実施例を示す概
要図、第２図は本考案における加熱ローラの一例
を示す拡大切断側面図、第３図は第２図の状態か
ら各弁が閉じた状態を示す切断側面図、第４図は
従来の定着装置の一例を示す概要図である。
１……定着ローラ、３……加熱ローラ、４……
加熱ヒータ、１４……内管、５……密閉空気層、
１６……窓孔、１７……形状記憶合金製の弁。
FIG. 1 is a schematic diagram showing an embodiment of the fixing device of the present invention, FIG. 2 is an enlarged cutaway side view showing an example of the heating roller of the present invention, and FIG. 3 is a diagram showing each valve closed from the state shown in FIG. FIG. 4 is a schematic diagram showing an example of a conventional fixing device. 1... Fixing roller, 3... Heating roller, 4...
Heater, 14... Inner tube, 5... Sealed air layer,
16...Window hole, 17...Valve made of shape memory alloy.
Claims (1)
ータとからなる定着ローラを有する定着装置にお
いて、上記加熱ローラと加熱ヒータの間に内管を
挿入して、該内管と加熱ローラとの間に密閉空気
層を形成し、且つ、上記加熱ヒータの発熱部の周
囲にて上記密閉空気層に開口を形成するよう上記
内管の途中位置に、加熱ヒータの各発熱部に対応
させて窓孔を穿設し、該内管の各窓孔部に、形状
記憶合金製の弁を設けて、加熱空気の温度変化に
より弁を開閉できるようにしてなることを特徴と
する定着装置。 In a fixing device having a fixing roller consisting of a heating roller and a heating heater disposed within the heating roller, an inner tube is inserted between the heating roller and the heating heater, and a seal is formed between the inner tube and the heating roller. Window holes are bored in the middle of the inner tube in correspondence with each heat generating part of the heater to form an air layer and to form an opening in the sealed air layer around the heat generating part of the heater. A fixing device characterized in that a shape memory alloy valve is provided in each window hole of the inner tube so that the valve can be opened and closed according to a change in the temperature of heated air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9949488U JPH0221666U (en) | 1988-07-27 | 1988-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9949488U JPH0221666U (en) | 1988-07-27 | 1988-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0221666U true JPH0221666U (en) | 1990-02-14 |
Family
ID=31326704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9949488U Pending JPH0221666U (en) | 1988-07-27 | 1988-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002359057A (en) * | 2001-05-31 | 2002-12-13 | Musashino Seiki Kk | Gas heating heat pipe |
-
1988
- 1988-07-27 JP JP9949488U patent/JPH0221666U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002359057A (en) * | 2001-05-31 | 2002-12-13 | Musashino Seiki Kk | Gas heating heat pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0221666U (en) | ||
| JPS58177042U (en) | Heated thermal container | |
| JPH01160470U (en) | ||
| JPH0419951U (en) | ||
| JPS6243373U (en) | ||
| JPS61198875U (en) | ||
| JPS62114976U (en) | ||
| JPH0252005U (en) | ||
| JPS61104112U (en) | ||
| JPS6135630U (en) | electric water heater | |
| JPH0415537U (en) | ||
| JPH01118715U (en) | ||
| JPH0198495U (en) | ||
| JPS6334995U (en) | ||
| JPS6398564U (en) | ||
| JPH01144567U (en) | ||
| JPS63137246U (en) | ||
| JPS629060U (en) | ||
| JPS6151693U (en) | ||
| JPS6378802U (en) | ||
| JPH01116360U (en) | ||
| JPS61117511U (en) | ||
| JPS6161923U (en) | ||
| JPH01126262U (en) | ||
| JPS63139498U (en) |