JPS61119155U - - Google Patents
Info
- Publication number
- JPS61119155U JPS61119155U JP140885U JP140885U JPS61119155U JP S61119155 U JPS61119155 U JP S61119155U JP 140885 U JP140885 U JP 140885U JP 140885 U JP140885 U JP 140885U JP S61119155 U JPS61119155 U JP S61119155U
- Authority
- JP
- Japan
- Prior art keywords
- amount
- light
- photosensitive drum
- exposure lamp
- detecting
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Description
第１図は本考案の一実施例のをあらわす概略構
成図、第２図は同じく本考案の一実施例をあらわ
すブロツク図、第３図は本考案の実施例による光
量制御をあらわすフローチヤート図である。
１：ハロゲンランプ（露光ランプ）、２：リフ
レクター、３：原稿台、４：ミラー、６：感光ド
ラム、７：ランプ露光センサー（光量検出手段）
、８：画像濃度センサー（光量検出手段）、１２
：ＣＰＵ、１５：交流電源。
Fig. 1 is a schematic configuration diagram showing an embodiment of the invention, Fig. 2 is a block diagram also showing an embodiment of the invention, and Fig. 3 is a flowchart showing light amount control according to the embodiment of the invention. It is. 1: Halogen lamp (exposure lamp), 2: Reflector, 3: Original table, 4: Mirror, 6: Photosensitive drum, 7: Lamp exposure sensor (light amount detection means)
, 8: Image density sensor (light amount detection means), 12
:CPU, 15:AC power supply.
Claims (1)
感光ドラムに導くことにより画像露光するように
した複写機において、露光ランプの光量を検出す
る手段と原稿に反射して感光ドラムに導く光量を
検出する手段とを設け、これらの検出ランプ光量
および検出原稿反射光量に基づいて感光ドラムに
導く光量を所定値になるように露光ランプに供給
する交流電流を位相制御する手段を備えたことを
特徴とする複写機の露光制御装置。 In a copying machine that exposes an image by guiding reflected light from a document illuminated by an exposure lamp to a photosensitive drum, means for detecting the amount of light from the exposure lamp and means for detecting the amount of light reflected from the document and guided to the photosensitive drum. and means for controlling the phase of the alternating current supplied to the exposure lamp so that the amount of light guided to the photosensitive drum becomes a predetermined value based on the amount of light from the detection lamps and the amount of reflected light from the detected original. The machine's exposure control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP140885U JPS61119155U (en) | 1985-01-11 | 1985-01-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP140885U JPS61119155U (en) | 1985-01-11 | 1985-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61119155U true JPS61119155U (en) | 1986-07-28 |
Family
ID=30474128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP140885U Pending JPS61119155U (en) | 1985-01-11 | 1985-01-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61119155U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576871A (en) * | 1980-06-17 | 1982-01-13 | Ricoh Co Ltd | Detection of exposure in electrophotographic copier |
| JPS6031132A (en) * | 1983-07-30 | 1985-02-16 | Mita Ind Co Ltd | Automatic exposing device |
-
1985
- 1985-01-11 JP JP140885U patent/JPS61119155U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576871A (en) * | 1980-06-17 | 1982-01-13 | Ricoh Co Ltd | Detection of exposure in electrophotographic copier |
| JPS6031132A (en) * | 1983-07-30 | 1985-02-16 | Mita Ind Co Ltd | Automatic exposing device |
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