JPS5998455U - Fusing device for copying machines - Google Patents
Fusing device for copying machinesInfo
- Publication number
- JPS5998455U JPS5998455U JP19326982U JP19326982U JPS5998455U JP S5998455 U JPS5998455 U JP S5998455U JP 19326982 U JP19326982 U JP 19326982U JP 19326982 U JP19326982 U JP 19326982U JP S5998455 U JPS5998455 U JP S5998455U
- Authority
- JP
- Japan
- Prior art keywords
- fixing device
- temperature
- temperature detection
- circuit
- control circuit
- 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
Landscapes
- Fixing For Electrophotography (AREA)
- Thermally Actuated Switches (AREA)
- Control Of Temperature (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来実施例の基本構成を示すブロック図、第２
図は本考案の基本構成を示すブロック図、第３図は本考
案の一実施例の定着装置を示す構造図、第４図は同じ（
定着温度制御回路図である。
１・・・ヒータ、２・・・交流電圧制御素子、３・・・
温度ヒユーズ、４・・・パルス制御回路、５・・・温度
制御素子（コンパレータ）、６・・・温度検知手段（サ
ーミスター）、９・・・温度設定分圧器、２４・・・ホ
トサイリスタの受光部、２６・・・ホトサイリスタの発
光部、２８・・・ホトカプラーの発光部、２９・・・ホ
トカプラーの受光部、３１・・・トランジスター、３５
・・・ユニジャンクショントランジスタ−１３８・・・
温度制御素子（コンパレータ）、４１・・・温度検知ス
イッチ、４２・・・サーミスタ、４５・・・可変抵抗、
５０・・・定着装置カバー、５１・・・ヒートロール。Figure 1 is a block diagram showing the basic configuration of a conventional embodiment;
The figure is a block diagram showing the basic configuration of the present invention, Figure 3 is a structural diagram showing a fixing device according to an embodiment of the present invention, and Figure 4 is the same (
FIG. 3 is a fixing temperature control circuit diagram. 1... Heater, 2... AC voltage control element, 3...
Temperature fuse, 4... Pulse control circuit, 5... Temperature control element (comparator), 6... Temperature detection means (thermistor), 9... Temperature setting voltage divider, 24... Photothyristor Light receiving section, 26... Light emitting section of photothyristor, 28... Light emitting section of photocoupler, 29... Light receiving section of photocoupler, 31... Transistor, 35
...Unijunction transistor-138...
Temperature control element (comparator), 41... temperature detection switch, 42... thermistor, 45... variable resistor,
50... Fixing device cover, 51... Heat roll.
Claims (1)
けられた定着ローラ、該定着ローラを加熱するヒニタ、
該定着ローラの表面温度を検知する温度検知手段、該温
度検知手段からの温度検知信号に基づき前記ヒータへの
電力を制御する、温度制御回路からなる複写機の定着装
置において、定着装置に温度検知スイッチを構成し、前
記温度制御回路に前記温度検知手段の断線検知及び該温
度検知スイッチの動作を検知する検知回路、該検知回路
の出力信号により前記温度制御回路からの前記ヒータ加
熱信号を遮断するスイッチ回路を構成し、定着装置の異
常過熱を防止することを特徴とする複写機用定着装置。 第 ３ 日[Claims for Utility Model Registration] A fixing device provided in a copy paper transport path, a fixing roller provided in the fixing device, a heater for heating the fixing roller,
In a fixing device of a copying machine, the fixing device includes a temperature detection means for detecting the surface temperature of the fixing roller, and a temperature control circuit that controls power to the heater based on a temperature detection signal from the temperature detection means. A switch is configured, and the temperature control circuit includes a detection circuit that detects a disconnection of the temperature detection means and an operation of the temperature detection switch, and a detection circuit that cuts off the heater heating signal from the temperature control circuit based on an output signal of the detection circuit. A fixing device for a copying machine comprising a switch circuit to prevent abnormal overheating of the fixing device. 3rd day
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19326982U JPS5998455U (en) | 1982-12-22 | 1982-12-22 | Fusing device for copying machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19326982U JPS5998455U (en) | 1982-12-22 | 1982-12-22 | Fusing device for copying machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5998455U true JPS5998455U (en) | 1984-07-03 |
Family
ID=30415723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19326982U Pending JPS5998455U (en) | 1982-12-22 | 1982-12-22 | Fusing device for copying machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5998455U (en) |
-
1982
- 1982-12-22 JP JP19326982U patent/JPS5998455U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4053733A (en) | Temperature control device | |
| JPH0132983B2 (en) | ||
| US3588445A (en) | Fuser control circuit | |
| US3946199A (en) | Temperature control means for toner fusing device in an electrostatic copier | |
| JPS5998455U (en) | Fusing device for copying machines | |
| US5359178A (en) | Apparatus for detecting turn-on state of plural heat lamps of a thermal fixing unit of a copying machine | |
| JP4054438B2 (en) | Image forming apparatus | |
| US4035612A (en) | Circuit for detecting trouble in electric lines connecting relatively movable circuits | |
| JPH0310527Y2 (en) | ||
| JPS60169664U (en) | Copy machine heat fixing device | |
| JPS5824815U (en) | Temperature control circuit for electric heating equipment | |
| JPS5855386Y2 (en) | Fuser temperature control device | |
| JPS62148986A (en) | Copying device | |
| JPS58176667A (en) | Control device for heater temperature | |
| JPS5933055U (en) | Fuser temperature control device | |
| JPH0320345U (en) | ||
| JPS58103071U (en) | Copy machine heat fixing device | |
| JPS6127158U (en) | Fusing device | |
| JPH06130854A (en) | Heater controller for image recorder | |
| JPH01158514A (en) | Temperature control circuit | |
| JPS6059386U (en) | Disconnection protection circuit for thermal heating element | |
| JPS60168160U (en) | Fuser temperature control device | |
| JPS6144210Y2 (en) | ||
| JPS62104251U (en) | ||
| JPS60169663U (en) | Fusing device of electronic copying machine |