JPH0289444U - - Google Patents
Info
- Publication number
- JPH0289444U JPH0289444U JP16765388U JP16765388U JPH0289444U JP H0289444 U JPH0289444 U JP H0289444U JP 16765388 U JP16765388 U JP 16765388U JP 16765388 U JP16765388 U JP 16765388U JP H0289444 U JPH0289444 U JP H0289444U
- Authority
- JP
- Japan
- Prior art keywords
- roller
- image forming
- electric blower
- surface temperature
- during
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fixing For Electrophotography (AREA)
Description
第１図は直流電動送風機の特性曲線図、第２図
は本考案に係る排熱装置の印加電圧切換回路の一
例を示す図、第３図は本考案を利用する複写機の
全体略説明図、第４図は複写機の後部斜視図、第
５図は転写ドラムの説明図、第６図は転写ドラム
と感光体ドラムの駆動系の説明斜視図、第７図は
定着装置の断面図である。
３５……定着装置、３６……定着ローラ、３７
……加圧ローラ、３８……定着ヒータ、３９……
温度検出素子、４８……排熱装置。
Fig. 1 is a characteristic curve diagram of a DC electric blower, Fig. 2 is a diagram showing an example of an applied voltage switching circuit of a heat exhaust device according to the present invention, and Fig. 3 is an overall schematic explanatory diagram of a copying machine using the present invention. , FIG. 4 is a rear perspective view of the copying machine, FIG. 5 is an explanatory view of the transfer drum, FIG. 6 is an explanatory perspective view of the drive system of the transfer drum and photosensitive drum, and FIG. 7 is a sectional view of the fixing device. be. 35... Fixing device, 36... Fixing roller, 37
... Pressure roller, 38 ... Fixing heater, 39 ...
Temperature detection element, 48... heat exhaust device.
Claims (1)
定着ローラ内部に設けられた加熱源と、ローラ表
面に設けられた表面温度検出素子とを有し、加圧
ローラが定着ローラに一定の圧力で加圧され、ロ
ーラの表面温度を一定温度に制御される定着装置
と、機械内部から外部へ熱を放出する排熱装置と
を備えた画像形成装置において、 前記排熱装置を直流電動送風機として形成し、
該直流電動送風機の印加電圧を、前記表面温度検
出素子の検出値が所定値になる迄と、コジー待機
時と、コピー中とに切換えられることにより直流
電動送風機の回転数の切換を行う事を特徴とする
画像形成装置。 (2) 前記コピー中には予め定められたコピー枚
数時に印加電圧が更に切換えられることを特徴と
する請求項１に記載の画像形成装置。[Claims for Utility Model Registration] (1) A fixing roller, a pressure roller, at least a heating source provided inside the fixing roller, and a surface temperature detection element provided on the surface of the roller; is applied to a fixing roller with a constant pressure, and the image forming apparatus includes a fixing device in which the surface temperature of the roller is controlled at a constant temperature, and a heat exhaust device that discharges heat from inside the machine to the outside. Forming the heating device as a DC electric blower,
The rotation speed of the DC electric blower is switched by switching the voltage applied to the DC electric blower until the detected value of the surface temperature detection element reaches a predetermined value, during cozy standby, and during copying. Features of the image forming device. (2) The image forming apparatus according to claim 1, wherein during the copying, the applied voltage is further switched when a predetermined number of copies are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16765388U JPH0289444U (en) | 1988-12-27 | 1988-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16765388U JPH0289444U (en) | 1988-12-27 | 1988-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0289444U true JPH0289444U (en) | 1990-07-16 |
Family
ID=31456143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16765388U Pending JPH0289444U (en) | 1988-12-27 | 1988-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0289444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04166959A (en) * | 1990-10-31 | 1992-06-12 | Mita Ind Co Ltd | Cooling device for image forming apparatus |
-
1988
- 1988-12-27 JP JP16765388U patent/JPH0289444U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04166959A (en) * | 1990-10-31 | 1992-06-12 | Mita Ind Co Ltd | Cooling device for image forming apparatus |
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