JPH0418849U - - Google Patents
Info
- Publication number
- JPH0418849U JPH0418849U JP6005790U JP6005790U JPH0418849U JP H0418849 U JPH0418849 U JP H0418849U JP 6005790 U JP6005790 U JP 6005790U JP 6005790 U JP6005790 U JP 6005790U JP H0418849 U JPH0418849 U JP H0418849U
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- photosensitive drum
- measuring probe
- exposure light
- illuminance measuring
- 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
- 239000000523 sample Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
第１図は電子写真用感光ドラムの特性評価装置
の要部の構成図、第２図は従来における露光光量
調節法の説明図、第３図、第４図は本考案の一実
施例の説明図である。
１……被特性測定感光ドラム、２……帯電部、
３……露光光源、４……電位測定プローブ、５…
…シヤツタ、６……制御ユニツト、７……反射ミ
ラー、８……照度計、８ａ……照度測定用プロー
ブ、９……コンピユータシステム部。
Fig. 1 is a block diagram of the main parts of a characteristic evaluation device for electrophotographic photosensitive drums, Fig. 2 is an explanatory diagram of a conventional exposure light amount adjustment method, and Figs. 3 and 4 are explanatory diagrams of an embodiment of the present invention. It is a diagram. 1... Photosensitive drum to be measured for characteristics, 2... Charging section,
3...Exposure light source, 4...Potential measurement probe, 5...
... Shutter, 6 ... Control unit, 7 ... Reflection mirror, 8 ... Illuminance meter, 8a ... Illuminance measurement probe, 9 ... Computer system section.
Claims (1)
ドラムに投射する光投射部と、感光ドラムの周辺
に設けた照度測定プローブと、前記照度測定プロ
ーブの検出出力を露光光量の設定値と比較し、そ
の差が常に零となるように前記シヤツタを制御す
る制御部とを備えた電子写真感光ドラム用特性評
価装置の自動光量調節装置。 an exposure light source, a shutter, a light projection unit that projects future light onto the photosensitive drum, an illuminance measuring probe provided around the photosensitive drum, and comparing the detection output of the illuminance measuring probe with a set value of the exposure light amount, and a control section that controls the shutter so that the difference is always zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6005790U JPH0418849U (en) | 1990-06-06 | 1990-06-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6005790U JPH0418849U (en) | 1990-06-06 | 1990-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0418849U true JPH0418849U (en) | 1992-02-17 |
Family
ID=31587089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6005790U Pending JPH0418849U (en) | 1990-06-06 | 1990-06-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0418849U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214422A (en) * | 1975-07-24 | 1977-02-03 | Fuji Xerox Co Ltd | Automatic control method of exposure for the electrophotographic copying machine |
| JPS52119328A (en) * | 1976-03-31 | 1977-10-06 | Ricoh Co Ltd | Automatic control for amt. of exposure light in electrophotographic co pier |
| JPS63301082A (en) * | 1987-05-30 | 1988-12-08 | Canon Inc | Inspecting method for photosensitive body characteristic |
-
1990
- 1990-06-06 JP JP6005790U patent/JPH0418849U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214422A (en) * | 1975-07-24 | 1977-02-03 | Fuji Xerox Co Ltd | Automatic control method of exposure for the electrophotographic copying machine |
| JPS52119328A (en) * | 1976-03-31 | 1977-10-06 | Ricoh Co Ltd | Automatic control for amt. of exposure light in electrophotographic co pier |
| JPS63301082A (en) * | 1987-05-30 | 1988-12-08 | Canon Inc | Inspecting method for photosensitive body characteristic |
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