JPH0394554U - - Google Patents
Info
- Publication number
- JPH0394554U JPH0394554U JP191590U JP191590U JPH0394554U JP H0394554 U JPH0394554 U JP H0394554U JP 191590 U JP191590 U JP 191590U JP 191590 U JP191590 U JP 191590U JP H0394554 U JPH0394554 U JP H0394554U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- amount
- light
- image forming
- forming apparatus
- 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.)
- Pending
Links
- 239000004065 semiconductor Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims 2
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図は本考案による画像形成装置の構造を示
すブロツク図、第２図は従来における画像形成装
置の構造を示すブロツク図である。
符号の説明、１０１……半導体レーザー、１０
２……フオトダイオード、１０３……Ｉ／Ｖコン
バータ、１０４，１１２……比較回路、１０５…
…セレクト回路、１０６……Ｕ／Ｄカウンタ、１
０７……Ｄ／Ａコンバータ、１０８……Ｖ／Ｉコ
ンバータ、１０９……半導体レーザードライバー
、１１０……光検出装置、１１１……ピークホー
ルド回路、ＶＲ２……可変抵抗器。
FIG. 1 is a block diagram showing the structure of an image forming apparatus according to the present invention, and FIG. 2 is a block diagram showing the structure of a conventional image forming apparatus. Explanation of symbols, 101... Semiconductor laser, 10
2...Photodiode, 103...I/V converter, 104, 112...Comparison circuit, 105...
...Select circuit, 106...U/D counter, 1
07...D/A converter, 108...V/I converter, 109...semiconductor laser driver, 110...photodetector, 111...peak hold circuit, VR2...variable resistor.
Claims (1)
量をモニターする光量モニター手段と、前記半導
体レーザーの光量を常に適正な値とするための光
量安定化手段とを備えた半導体レーザー駆動回路
を有する画像形成装置において、 前記半導体レーザーのチツプ外に設けた半導体
レーザーからの発光光量を検知する光検出手段と
、前記光検出手段からの出力値に基づき前記半導
体レーザーからの光量を適性レベルに制御する制
御手段とを備えたことを特徴とする画像形成装置
。[Claims for Utility Model Registration] A semiconductor laser comprising a semiconductor laser, a light amount monitoring means for monitoring the amount of light emitted by the semiconductor laser, and a light amount stabilizing means for always keeping the light amount of the semiconductor laser at an appropriate value. In an image forming apparatus having a drive circuit, a photodetecting means for detecting the amount of light emitted from the semiconductor laser provided outside the chip of the semiconductor laser, and an appropriate amount of light from the semiconductor laser based on an output value from the photodetecting means. An image forming apparatus characterized by comprising: control means for controlling the level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP191590U JPH0394554U (en) | 1990-01-13 | 1990-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP191590U JPH0394554U (en) | 1990-01-13 | 1990-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0394554U true JPH0394554U (en) | 1991-09-26 |
Family
ID=31505802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP191590U Pending JPH0394554U (en) | 1990-01-13 | 1990-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0394554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101008302B1 (en) * | 2007-11-27 | 2011-01-13 | 파나소닉 전공 주식회사 | Connector for flat terminal |
-
1990
- 1990-01-13 JP JP191590U patent/JPH0394554U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101008302B1 (en) * | 2007-11-27 | 2011-01-13 | 파나소닉 전공 주식회사 | Connector for flat terminal |
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