JPS5966259U - heat fixing device - Google Patents

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案の一実施例の熱定着装置、第２図は、
本考案の一実施例の熱定着装置の制御回路図、第３図は
、本考案の熱定着装置に係る入力電圧特性図、第４図は
、本考案の熱定着装置に係る温度特性図である。FIG. 1 shows a heat fixing device according to an embodiment of the present invention, and FIG.
FIG. 3 is a control circuit diagram of a heat fixing device according to an embodiment of the present invention, FIG. 3 is an input voltage characteristic diagram of the heat fixing device of the present invention, and FIG. 4 is a temperature characteristic diagram of the heat fixing device of the present invention. be.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 所望の熱源を有した複写紙の定着器と、該定着器の温度
を略一定に調節するために前記定着器近傍に設けられた
温度検出器と、前記複写紙が前記定着器を通過する際前
記複写紙の画像面に向けて送風し前記複写紙を乾燥せし
めるためのファンと、前記温度検出器の出力電圧と第１
の基準電圧とを・比較する第１の比較器と、前記出力電
圧と第２の基準電圧とを比較する第２の比較器と、前記
第１の比較器の出力反転から前記第２の比較器の出力反
転までの間前記ファンを駆動するための駆動手段とを具
備して成り、前記定着器の熱的オーバーシュートを軽減
またはなくしたことを特徴とする　−熱定着装置。a fusing device for copy paper having a desired heat source; a temperature detector provided near the fusing device to adjust the temperature of the fusing device to be substantially constant; and when the fusing paper passes through the fusing device; a fan for blowing air toward the image surface of the copy paper to dry the copy paper; an output voltage of the temperature sensor;
a first comparator that compares the output voltage with a reference voltage; a second comparator that compares the output voltage with a second reference voltage; and a first comparator that compares the output voltage with a second reference voltage; - A thermal fixing device, comprising: a driving means for driving the fan until the output of the fixing device is reversed, and thermal overshoot of the fixing device is reduced or eliminated.