JPS6434662U

JPS6434662U -

Info

Publication number: JPS6434662U
Application number: JP12952187U
Authority: JP
Priority date: 1987-08-26
Filing date: 1987-08-26
Publication date: 1989-03-02

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の構成を示す図、第２
図はヒートロールの構成を示す図、第３図は本考
案による昇温カーブを示す図、第４図は処理フロ
ーを示す図、第５図は本考案と従来のロール温度
の時間的変化を示す図、第６図は従来の昇温カー
ブを示す図である。１……サーミスタ、２……ヒータ、３……ヒー
トロール、４……Ａ／Ｄコンバータ、５……ＣＰ
Ｕ、６……ソリツドステートリレー、６１……フ
オトダイオード、６２，６３……フオトトライア
ツク、７……演算増幅器、８……インバータ、９
……トランジスタ。 Fig. 1 is a diagram showing the configuration of an embodiment of the present invention;
Figure 3 shows the configuration of the heat roll, Figure 3 shows the temperature rise curve according to the present invention, Figure 4 shows the processing flow, and Figure 5 shows the temporal change in roll temperature between the present invention and the conventional roll temperature. The diagram shown in FIG. 6 is a diagram showing a conventional temperature increase curve. 1...Thermistor, 2...Heater, 3...Heat roll, 4...A/D converter, 5...CP
U, 6...Solid state relay, 61...Photodiode, 62, 63...Phototriax, 7...Operation amplifier, 8...Inverter, 9
...transistor.

Claims

[Scope of utility model registration request]

The signal processing control means includes a temperature sensor provided near the object to be heated, a signal processing control means into which a detection signal from the temperature sensor is input, and a heater whose heating is controlled by the output from the signal processing control means. , At the start of control, the heating of the heater is forcibly stopped for a certain period of time, and the temperature of the heated object is calculated from the sensor temperature before and after the heating stops, and the temperature of the heated object is calculated from the calculated temperature of the heated object, sensor temperature, and final target temperature. A first target temperature that gradually increases over time is calculated, and the heater is continuously heated until the sensor detected temperature exceeds the calculated first target temperature. 1. A temperature control device for a copying machine, characterized in that a heater is controlled by using a second target temperature as a temperature that gradually increases over time, which is calculated with a final target temperature of a heated object as an end point.