JPS616874U

JPS616874U - Flash fixing device

Info

Publication number: JPS616874U
Application number: JP9080484U
Authority: JP
Inventors: 邦夫工藤; 豊彦熊田
Original assignee: 株式会社リコー; 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榊図、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は第２図の他の電気回路図、第３
図ｅは第３図ｄのコンデンサ残留電圧チェック回路の詳
細図、第３図ｆはその動作を説明するためのタイムチャ
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の各種入力信号あ発
生タイミシ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春チャニトである。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、６８・・・サイリスタ、１１０・・・
コンデンサ残留電圧チェック回路。Figure 1 is a schematic diagram of a copying machine showing an example of application of the present invention;
The figure is a schematic mechanical diagram of a flash fixing device according to an embodiment of the present invention, FIG. 3a is an electric circuit diagram of FIG. 2, and FIG. 3b is a discharge pulse waveform diagram when the damping factor is small.
Figure 3C is a discharge pulse waveform diagram when the damping factor is large; Figure 3d is another electric circuit diagram of Figure 2;
Figure e is a detailed diagram of the capacitor residual voltage check circuit of Figure 3 d, Figure 3 f is a time chart for explaining its operation, Figure 4 is a detailed diagram of the charging voltage control circuit of Figure 3 a,
Figure 5 is a detailed diagram of the overvoltage circuit in Figure 3a, and Figure 6 is a detailed diagram of the overvoltage circuit in Figure 3a.
Figure 7 is a detailed diagram of the trigger circuit in Figure a, Figure 7 is a detailed diagram of the phase control circuit in Figure 3 a, Figure 8 is a sequence circuit diagram that defines the generation timing of various input signals in Figure 3 a, Figure 9 are the Thai spring channels of the various signals shown in FIG. 21... Flash lamp, 23... Infrared lamp, 57... Capacitor, 61... Trigger circuit, 67
... Commutation circuit, 68... Thyristor, 110...
Capacitor residual voltage check circuit.

Claims

[Scope of utility model registration request]

a flash lamp for fixing the toner image on the transfer paper; an infrared lamp for preheating the transfer paper provided in front of the flash lamp; a capacitor and its discharge circuit for supplying luminous energy to the flash lamp; Built into the discharge circuit, the input of the trigger pulse makes the discharge circuit conductive, while the commutation power source is taken out from the capacitor, and the input of the commutation trigger makes the discharge circuit non-conductive, at the rear end of the discharge pulse. a timer circuit that outputs a forward commutation trigger after a predetermined period of time from the input of the trigger pulse; A flash fixing device comprising: a capacitor residual voltage check circuit that prohibits input of a commutation trigger.