JPH0244745U - - Google Patents
Info
- Publication number
- JPH0244745U JPH0244745U JP12345288U JP12345288U JPH0244745U JP H0244745 U JPH0244745 U JP H0244745U JP 12345288 U JP12345288 U JP 12345288U JP 12345288 U JP12345288 U JP 12345288U JP H0244745 U JPH0244745 U JP H0244745U
- Authority
- JP
- Japan
- Prior art keywords
- document
- detecting
- size
- reflected light
- light amount
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
Description
第１図は本考案の原理構成説明図、第２図は本
考案一実施例の構成図、第３図は本考案一実施例
の処理手順説明図、第４図乃至第６図は第３図の
説明補助図、第７図は本考案他の実施例の処理手
順説明図、第８図は第７図の説明補助図、第９図
は従来技術の問題点を説明するための補助図であ
る。
１…原稿サイズ検出手段、２…反射光量検出手
段、３…補正手段、４…制御手段、５…現像バイ
アス、６…露光ランプ光量、７…感光体表面電位
。
Fig. 1 is an explanatory diagram of the principle configuration of the present invention, Fig. 2 is a configuration diagram of an embodiment of the invention, Fig. 3 is an explanatory diagram of the processing procedure of an embodiment of the invention, and Figs. 7 is an auxiliary diagram for explaining the processing procedure of another embodiment of the present invention, FIG. 8 is an auxiliary diagram for explaining FIG. 7, and FIG. 9 is an auxiliary diagram for explaining the problems of the prior art. It is. DESCRIPTION OF SYMBOLS 1... Original size detection means, 2... Reflected light amount detection means, 3... Correction means, 4... Control means, 5... Development bias, 6... Exposure lamp light amount, 7... Photoreceptor surface potential.
Claims (1)
ラテンガラス上に載置された原稿を照明し、原稿
の走査方向に対して直角方向全域に渡つてその反
射光量を検出する手段と、該原稿サイズ検出手段
で検出した原稿サイズに応じて、同一濃度の原稿
はそのサイズに拘わらず同一の濃度制御となるよ
うに、該反射光量検出手段の検出値を補正する手
段と、該補正した検出値により、現像バイアス及
び／又は露光ランプ光量及び／又は感光体の表面
電位を調整制御する手段とを設け、コピー濃度を
自動制御するようにしたことを特徴とする複写機
の自動濃度制御装置。 means for detecting the size of a document to be copied, means for illuminating the document placed on a platen glass and detecting the amount of reflected light over the entire area perpendicular to the scanning direction of the document, and detecting the size of the document. means for correcting the detected value of the reflected light amount detecting means according to the document size detected by the detecting means, so that the same density control is applied to documents with the same density regardless of the size; 1. An automatic density control device for a copying machine, comprising: means for adjusting and controlling a developing bias and/or an exposure lamp light amount and/or a surface potential of a photoreceptor to automatically control copy density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12345288U JPH0244745U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12345288U JPH0244745U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244745U true JPH0244745U (en) | 1990-03-28 |
Family
ID=31372317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12345288U Pending JPH0244745U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244745U (en) |
-
1988
- 1988-09-22 JP JP12345288U patent/JPH0244745U/ja active Pending
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