JPS5930153U - Automatic copy density control device for electronic copying machines - Google Patents
Automatic copy density control device for electronic copying machinesInfo
- Publication number
- JPS5930153U JPS5930153U JP1982124441U JP12444182U JPS5930153U JP S5930153 U JPS5930153 U JP S5930153U JP 1982124441 U JP1982124441 U JP 1982124441U JP 12444182 U JP12444182 U JP 12444182U JP S5930153 U JPS5930153 U JP S5930153U
- Authority
- JP
- Japan
- Prior art keywords
- control device
- reflectance
- density control
- copy density
- electronic copying
- 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
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Dry Development In Electrophotography (AREA)
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
図面は本考案の実施例を示すもので、第１図は複写機要
部の概略的な構成説明図、第２図は本考案に用いられる
原稿反射率検出器の一例を示す概略的説明図、第３図は
現像電極と感光体との電位関係を示した概略的説明図、
第４図、第５図は本考案の原理を示す概略的説明図であ
る。
１は感光体、２は原稿搬送装置、８は帯電装置、９は露
光装置、１０は現像装置、１１は転写装置、１２は清掃
装置、１８は現像バイアス電源、２１は反射率検出器、
３０．３１はフォトセンサ、４６はトナー供給装置。The drawings show an embodiment of the present invention; FIG. 1 is a schematic explanatory diagram of the main parts of a copying machine, and FIG. 2 is a schematic explanatory diagram showing an example of a document reflectance detector used in the present invention. , FIG. 3 is a schematic explanatory diagram showing the potential relationship between the developing electrode and the photoreceptor,
FIGS. 4 and 5 are schematic illustrations showing the principle of the present invention. 1 is a photoreceptor, 2 is a document conveying device, 8 is a charging device, 9 is an exposure device, 10 is a developing device, 11 is a transfer device, 12 is a cleaning device, 18 is a developing bias power supply, 21 is a reflectance detector,
30. 31 is a photo sensor, 46 is a toner supply device.
Claims (1)
の背景領域の反射率を検知する反射率検知手段を設け、
該反射率検知手段にて検知した反射率を基準の反射率と
比較し、該基準反射率に対応するトナー供給量を基準と
してトナー供給量を制御するようにし、かつ該トナー供
給量の制御をコピーのデッドサイクル時に行なうように
したことを特徴とする電子複写機の複写濃度自動制御装
置。A reflectance detection means for detecting the reflectance of the background area of the document is provided in the document insertion part or the document installation part of the electronic copying machine,
The reflectance detected by the reflectance detection means is compared with a reference reflectance, and the toner supply amount is controlled based on the toner supply amount corresponding to the reference reflectance, and the toner supply amount is controlled. An automatic copy density control device for an electronic copying machine, characterized in that the automatic copy density control device operates during a dead cycle of copying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982124441U JPS5930153U (en) | 1982-08-19 | 1982-08-19 | Automatic copy density control device for electronic copying machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982124441U JPS5930153U (en) | 1982-08-19 | 1982-08-19 | Automatic copy density control device for electronic copying machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5930153U true JPS5930153U (en) | 1984-02-24 |
Family
ID=30283674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982124441U Pending JPS5930153U (en) | 1982-08-19 | 1982-08-19 | Automatic copy density control device for electronic copying machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5930153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642087A (en) * | 1992-06-11 | 1994-02-15 | Misawa Homes Co Ltd | Wall corner structure |
-
1982
- 1982-08-19 JP JP1982124441U patent/JPS5930153U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642087A (en) * | 1992-06-11 | 1994-02-15 | Misawa Homes Co Ltd | Wall corner structure |
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