JPS5933055U

JPS5933055U - Fuser temperature control device

Info

Publication number: JPS5933055U
Application number: JP12758582U
Authority: JP
Inventors: 堀内　立美; 達文楠田
Original assignee: コニカ株式会社
Priority date: 1982-08-24
Filing date: 1982-08-24
Publication date: 1984-02-29

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は定着ローラの温度上昇と温度ヒユーズの溶断と
の関係を示す温度特性図、第２図は本考案の第１の実施
例を示す定着器の温度制御装置の回路図、第３図は正常
な温度制御が行われている際の温度特性図、第４図は安
全装置の動作を示す温度特性図、第５図は本考案の第２
の実施例を示す温度制御装置の回路図、である。図面に用いられる符号は、１・・・温度制御回路、３・
・・計時装置、ＣＡ・・・熱電対、ＲＬ・・・リレー、
Ｆｌ・・・ヒユーズ、Ｆ２・・・温度ヒユーズ、Ｌｌ・
・・ヒータ、Ｓｌ。Ｓ２・・・接点。第１図　′ 第２図Fig. 1 is a temperature characteristic diagram showing the relationship between the temperature rise of the fixing roller and the melting of the temperature fuse, Fig. 2 is a circuit diagram of a temperature control device for a fixing device showing the first embodiment of the present invention, and Fig. 3 Figure 4 is a temperature characteristic diagram showing the operation of the safety device, and Figure 5 is the temperature characteristic diagram when normal temperature control is being performed.
FIG. 2 is a circuit diagram of a temperature control device showing an embodiment of the present invention. The symbols used in the drawings are 1...temperature control circuit, 3...
...Clocking device, CA...thermocouple, RL...relay,
Fl...Fuse, F2...Temperature fuse, Ll...
...Heater, Sl. S2...Contact. Figure 1 ′ Figure 2

Claims

[Claims for Utility Model Registration] 1. In a temperature control device for a fixing device that heats and fixes a transfer material carrying a toner image in a recording device, there is provided an energization detection means for detecting energization of a heat source, and a energization detection means for detecting energization of a heat source. a timer for timing the energization time to the heat source based on a detection signal; a first power cutoff means for cutting off the energization to the heat source when the timer finishes timing; and a first power cutoff means for energizing the heat source due to a rise in temperature of the heat source. and second power cutoff means for cutting off the power. 2. The device according to claim 1 of the utility model registration claim, wherein the energization detection means is constituted by a through-type current detector. 3. The device according to item 1 of the utility model registration claim, wherein the energization detection means is constituted by a photoelectric conversion element. 4. The device according to any one of claims 1 to 3 of the utility model registration claims, wherein the first power cutoff means for cutting off the power supply to the heat source at the end of the time measurement is constituted by a fuse. 5. The device according to any one of claims 1 to 3 of the utility model registration claim, wherein the first power cutoff means for cutting off the power supply to the heat source at the end of the time measurement is constituted by an electromagnetic breaker. 6. The second power cutoff means for cutting off electricity to the heat source due to a rise in the temperature of the heat source is constituted by a temperature fuse, as described in any one of claims 1 to 5 of the claims for utility model registration. Device.