JPS616877U

JPS616877U - Flash fixing device

Info

Publication number: JPS616877U
Application number: JP9080784U
Authority: JP
Inventors: 邦夫工藤; 豊彦熊田
Original assignee: ウシオ電機株式会社
Priority date: 1984-06-20
Filing date: 1984-06-20
Publication date: 1986-01-16

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

[Brief explanation of the drawing]

第１図は本考案の適用例を示す複写装置の概要図、第２
図は本考案の一実施例に係るフラッシュ．定着装置の概
略機構図、第３図ａは第２図の電気回路図、第３図ｂは
ダンピングファクターが小さい場合の放電パルス波形図
、第３図Ｃはダンピングファクターが大きい場合の放電
パルス波形図、第３図ｄはコンデンサ残留電圧検知回路
の動作タイ云チャート、第４図は第３図ａの充電電圧制
御回路の詳細図、第５図は第３図ａの過電圧回路の詳細
図、第６図は第３図ａのトリガ回路の詳細図、第７図は
第３図ａの位相制御回路の詳細図、第８図は第３図ａの
各種入力信号の発生タイミングを規定するシーケンス回
路図、第９図は第８図の各種信号のタイムチャートであ
る。２１・・・フラッシュランプ、２３・・・赤外線ランプ
、５７・・・コンデンサ、６１・・・トリガ回路、６７
・・・転流回路、１１０・・・残留電圧検知回路。Figure 1 is a schematic diagram of a copying machine showing an example of application of the present invention;
The figure shows a flash according to one embodiment of the present invention. A schematic mechanical diagram of the fixing device, FIG. 3a is the electric circuit diagram of FIG. 2, FIG. 3b is a discharge pulse waveform diagram when the damping factor is small, and FIG. 3C is a discharge pulse waveform when the damping factor is large. Figure 3d is an operation chart of the capacitor residual voltage detection circuit, Figure 4 is a detailed diagram of the charging voltage control circuit of Figure 3a, Figure 5 is a detailed diagram of the overvoltage circuit of Figure 3a, Fig. 6 is a detailed diagram of the trigger circuit in Fig. 3a, Fig. 7 is a detailed diagram of the phase control circuit in Fig. 3a, and Fig. 8 is a sequence defining the generation timing of various input signals in Fig. 3a. The circuit diagram and FIG. 9 are time charts of the various signals shown in FIG. 21... Flash lamp, 23... Infrared lamp, 57... Capacitor, 61... Trigger circuit, 67
... Commutation circuit, 110... Residual voltage detection circuit.

Claims

[Scope of utility model registration request]

An infrared lamp that preheats the transfer paper, a flash lamp that fixes the toner image on the preheated transfer paper, and a capacitor that supplies luminous energy to the flash lamp, which are connected in series to the flash lamp to form a capacitor discharge circuit. a discharging thyristor that changes the discharging thyristor from a conductive state to a non-conducting state; A flash fixing device comprising a capacitor residual voltage detection circuit that generates a current trigger.