JPH046077U - - Google Patents
Info
- Publication number
- JPH046077U JPH046077U JP4531790U JP4531790U JPH046077U JP H046077 U JPH046077 U JP H046077U JP 4531790 U JP4531790 U JP 4531790U JP 4531790 U JP4531790 U JP 4531790U JP H046077 U JPH046077 U JP H046077U
- Authority
- JP
- Japan
- Prior art keywords
- temperature fuse
- heater
- series
- control element
- fixing
- 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
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Description
第１図は本考案による定着装置の主要部の構成
を示す回路図、第２図は本考案による温度ヒユー
ズの設置例を示す斜視図、第３図は定着装置の一
例を示す正面図、第４図は定着装置の制御系の詳
細を示すブロツク図、第５図は定着安全回路４０
３の詳細を示す回路図、第６図はヒータ駆動部４
０５の詳細を示す回路図、第７図はヒータの温度
制御を示す特性図、第８図は定着ローラの異常加
熱時のローラ表面温度の特性図、第９図はサーミ
スタ及び温度ヒユーズの取り付け状況を示す断面
図である。
符号の説明、１０１，１０２，３０７……温度
ヒユーズ、３０２……定着ローラ、３０５……ヒ
ータ、３０６……サーミスタ、４０１……制御部
、４０２……ＣＰＵ、４０３……定着安全回路、
４０５……ヒータ駆動部、６０２……トライアツ
ク、６０３……ブリツジダイオード、６０６……
トランジスタ、６０７……ホトサイリスタ、６０
９……発光ダイオード。
FIG. 1 is a circuit diagram showing the configuration of the main parts of the fixing device according to the present invention, FIG. 2 is a perspective view showing an example of installing a temperature fuse according to the present invention, FIG. 3 is a front view showing an example of the fixing device, and FIG. Figure 4 is a block diagram showing details of the control system of the fixing device, and Figure 5 is the fixing safety circuit 40.
3 is a circuit diagram showing the details of heater drive section 4, and FIG.
05 details, Figure 7 is a characteristic diagram showing temperature control of the heater, Figure 8 is a characteristic diagram of the roller surface temperature when the fixing roller is abnormally heated, and Figure 9 is the installation status of the thermistor and temperature fuse. FIG. Explanation of symbols, 101, 102, 307... Temperature fuse, 302... Fixing roller, 305... Heater, 306... Thermistor, 401... Control unit, 402... CPU, 403... Fixing safety circuit,
405... Heater drive unit, 602... Triack, 603... Bridge diode, 606...
Transistor, 607...Photothyristor, 60
9... Light emitting diode.
Claims (1)
画像の定着を行う定着ローラと、前記ヒータの通
電制御を行う制御素子と、該制御素子に直列接続
される過温防止用の温度ヒユーズとを備えた定着
装置において、 前記温度ヒユーズに対し同一定格の第２の温度
ヒユーズを直列接続したことを特徴とする定着装
置。[Claims for Utility Model Registration] A fixing roller that fixes an image on a transfer paper while being heated by a built-in heater, a control element that controls energization of the heater, and a fuser roller that is connected in series to the control element. What is claimed is: 1. A fixing device comprising a temperature fuse for preventing heat buildup, characterized in that a second temperature fuse having the same rating is connected in series to the temperature fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4531790U JPH046077U (en) | 1990-04-27 | 1990-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4531790U JPH046077U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH046077U true JPH046077U (en) | 1992-01-21 |
Family
ID=31559383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4531790U Pending JPH046077U (en) | 1990-04-27 | 1990-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046077U (en) |
-
1990
- 1990-04-27 JP JP4531790U patent/JPH046077U/ja active Pending
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