JPS6434646U - - Google Patents
Info
- Publication number
- JPS6434646U JPS6434646U JP12896187U JP12896187U JPS6434646U JP S6434646 U JPS6434646 U JP S6434646U JP 12896187 U JP12896187 U JP 12896187U JP 12896187 U JP12896187 U JP 12896187U JP S6434646 U JPS6434646 U JP S6434646U
- Authority
- JP
- Japan
- Prior art keywords
- load current
- power supply
- detecting
- copying machine
- flash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
第１図は本考案に係わる電子写真複写機の１実
施例を示す図、第２図は第１図に示す実施例の制
御系の構成例を示すブロツク図、第３図はフラツ
シユ電源の具体的構成例を示す図、第４図は正常
な動作時のフラツシユ電源の各部の波形を示す図
、第５図は負荷短絡時のフラツシユ電源の各部の
波形を示す図である。
１……複写機ケーシング、２……プラテンガラ
ス、３……プラテンカバー、４……反射部材、５
……フラツシユランプ、６……レンズ、７……ベ
ルト状感光体、８……ロール、９……チヤージコ
ロトロン、１０……現像器、１１……転写前コロ
トロン、１２……原稿、１３……除電ランプ、１
４……ＣＰＵ、１５……フラツシユ電源部、１６
……剥離コロトロン、１７……転写コロトロン、
１８……高圧電源、１９……表示部、２０……交
流電源、２１……スイツチ回路、２２……昇圧回
路、２３……整流回路、２４……コンデンサ、２
５……コイル、２６……検知器、２７……制御回
路、２８……トリガ回路、３０，３１……増幅器
、３２……ダイオード、３３……発光ダイオード
とホトトランジスタ、３４……インバータ、３５
……ＡＮＤ回路、３６……フリツブフロツプ、３
７……トランジスタ、３８……リレー、３９……
リレーの励磁コイル、４０……リレーの切片。
FIG. 1 is a diagram showing one embodiment of an electrophotographic copying machine according to the present invention, FIG. 2 is a block diagram showing an example of the configuration of a control system of the embodiment shown in FIG. 1, and FIG. 3 is a specific example of a flash power supply. FIG. 4 is a diagram showing waveforms of various parts of the flash power supply during normal operation, and FIG. 5 is a diagram showing waveforms of various parts of the flash power supply when a load is short-circuited. DESCRIPTION OF SYMBOLS 1... Copying machine casing, 2... Platen glass, 3... Platen cover, 4... Reflective member, 5
... Flash lamp, 6 ... Lens, 7 ... Belt-shaped photoreceptor, 8 ... Roll, 9 ... Charge corotron, 10 ... Developer, 11 ... Pre-transfer corotron, 12 ... Original document, 13... Static elimination lamp, 1
4...CPU, 15...Flash power supply section, 16
...Peeling corotron, 17...Transfer corotron,
18...High voltage power supply, 19...Display section, 20...AC power supply, 21...Switch circuit, 22...Boost circuit, 23...Rectifier circuit, 24...Capacitor, 2
5... Coil, 26... Detector, 27... Control circuit, 28... Trigger circuit, 30, 31... Amplifier, 32... Diode, 33... Light emitting diode and phototransistor, 34... Inverter, 35
...AND circuit, 36...Flipflop, 3
7...transistor, 38...relay, 39...
Relay excitation coil, 40... Relay section.
Claims (1)
子写真複写機において、負荷電流を検出する手段
と、負荷電流が正常なタイミングで流れたか否か
を検知する論理手段と、該論理手段により負荷電
流が正常でないタイミングで流れたことを検知し
た場合には、上記フラツシユ電源に対するエネル
ギーの供給を停止することを特徴とする電子写真
複写機。 An electrophotographic copying machine that performs flash exposure using a flash power supply includes means for detecting a load current, logic means for detecting whether or not the load current flows at a normal timing, and a means for detecting whether the load current flows at an abnormal timing using the logic means. An electrophotographic copying machine characterized in that, when detecting a flow, the supply of energy to the flash power source is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987128961U JPH0723815Y2 (en) | 1987-08-25 | 1987-08-25 | Electrophotographic copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987128961U JPH0723815Y2 (en) | 1987-08-25 | 1987-08-25 | Electrophotographic copier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6434646U true JPS6434646U (en) | 1989-03-02 |
| JPH0723815Y2 JPH0723815Y2 (en) | 1995-05-31 |
Family
ID=31382786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987128961U Expired - Lifetime JPH0723815Y2 (en) | 1987-08-25 | 1987-08-25 | Electrophotographic copier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723815Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61118780A (en) * | 1984-11-14 | 1986-06-06 | Fujitsu Ltd | Backup system for trouble time of flash fixation |
| JPS6210672A (en) * | 1985-07-09 | 1987-01-19 | Fuji Xerox Co Ltd | Electrophotographic copying machine |
-
1987
- 1987-08-25 JP JP1987128961U patent/JPH0723815Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61118780A (en) * | 1984-11-14 | 1986-06-06 | Fujitsu Ltd | Backup system for trouble time of flash fixation |
| JPS6210672A (en) * | 1985-07-09 | 1987-01-19 | Fuji Xerox Co Ltd | Electrophotographic copying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0723815Y2 (en) | 1995-05-31 |
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