JPS6339887B2 - - Google Patents
Info
- Publication number
- JPS6339887B2 JPS6339887B2 JP52006346A JP634677A JPS6339887B2 JP S6339887 B2 JPS6339887 B2 JP S6339887B2 JP 52006346 A JP52006346 A JP 52006346A JP 634677 A JP634677 A JP 634677A JP S6339887 B2 JPS6339887 B2 JP S6339887B2
- Authority
- JP
- Japan
- Prior art keywords
- slit
- width
- magnification
- lens
- document
- 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.)
- Expired
Links
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 238000003384 imaging method Methods 0.000 claims description 12
- 108091008695 photoreceptors Proteins 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000005286 illumination Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Control Of Exposure In Printing And Copying (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
- Control Or Security For Electrophotography (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP634677A JPS5392126A (en) | 1977-01-25 | 1977-01-25 | Exposure regulator for variable magnification copying machine |
GB2135/78A GB1599134A (en) | 1977-01-25 | 1978-01-19 | Variable magnification copying apparatus |
US05/871,250 US4171904A (en) | 1977-01-25 | 1978-01-23 | Image forming device of copying apparatus of the variable duplicate size type |
DE19782803180 DE2803180A1 (de) | 1977-01-25 | 1978-01-25 | Abbildungseinrichtung fuer ein kopiergeraet mit einer veraenderlichen kopiegroesse |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP634677A JPS5392126A (en) | 1977-01-25 | 1977-01-25 | Exposure regulator for variable magnification copying machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5392126A JPS5392126A (en) | 1978-08-12 |
JPS6339887B2 true JPS6339887B2 (US20100223739A1-20100909-C00025.png) | 1988-08-08 |
Family
ID=11635805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP634677A Granted JPS5392126A (en) | 1977-01-25 | 1977-01-25 | Exposure regulator for variable magnification copying machine |
Country Status (4)
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55126263A (en) * | 1979-03-23 | 1980-09-29 | Canon Inc | Variable magnification optical device |
US4260249A (en) * | 1979-09-17 | 1981-04-07 | International Business Machines | Two slit illumination aperture |
JPS57198474A (en) * | 1981-06-01 | 1982-12-06 | Canon Inc | Adjusting device for exposure |
JPS58214144A (ja) * | 1982-06-08 | 1983-12-13 | Canon Inc | 変倍式複写機の原稿濃度検出装置 |
JPS5964810A (ja) * | 1982-10-05 | 1984-04-12 | Canon Inc | 変倍投影装置 |
JPS5977433A (ja) * | 1982-10-26 | 1984-05-02 | Dainippon Screen Mfg Co Ltd | 複写カメラ |
JPS59200227A (ja) * | 1983-04-27 | 1984-11-13 | Fuji Photo Film Co Ltd | レンズ選択時における露光量補正方法 |
JPH01281461A (ja) * | 1988-05-07 | 1989-11-13 | Fuji Xerox Co Ltd | 記録装置およびその電力配分システム設計方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5010124A (US20100223739A1-20100909-C00025.png) * | 1973-05-24 | 1975-02-01 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3476478A (en) * | 1967-01-03 | 1969-11-04 | Xerox Corp | Apparatus for changing the magnification of a photocopier without changing the conjugate length of the optical system |
DE2039336A1 (de) * | 1969-08-13 | 1971-02-25 | Minolta Camera Kk | Vorrichtung zur Einstellung der Belichtungsmenge in einem Kopiergeraet |
JPS541178B1 (US20100223739A1-20100909-C00025.png) * | 1970-11-06 | 1979-01-22 | ||
JPS4918539U (US20100223739A1-20100909-C00025.png) * | 1972-05-19 | 1974-02-16 | ||
US3917393A (en) * | 1973-09-21 | 1975-11-04 | Rank Xerox Ltd | Varioslit |
NL168342C (nl) * | 1974-06-28 | 1982-03-16 | Oce Van Der Grinten Nv | Reproductie-inrichting |
JPS6014345B2 (ja) * | 1974-12-25 | 1985-04-12 | 株式会社リコー | 電子複写機における変倍スリツト露光方法 |
US4084897A (en) * | 1976-12-27 | 1978-04-18 | International Business Machines Corporation | Half-lens/mirror copier providing original-to-copy image reduction |
-
1977
- 1977-01-25 JP JP634677A patent/JPS5392126A/ja active Granted
-
1978
- 1978-01-19 GB GB2135/78A patent/GB1599134A/en not_active Expired
- 1978-01-23 US US05/871,250 patent/US4171904A/en not_active Expired - Lifetime
- 1978-01-25 DE DE19782803180 patent/DE2803180A1/de active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5010124A (US20100223739A1-20100909-C00025.png) * | 1973-05-24 | 1975-02-01 |
Also Published As
Publication number | Publication date |
---|---|
GB1599134A (en) | 1981-09-30 |
US4171904A (en) | 1979-10-23 |
JPS5392126A (en) | 1978-08-12 |
DE2803180A1 (de) | 1978-07-27 |
DE2803180C2 (US20100223739A1-20100909-C00025.png) | 1987-06-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6339887B2 (US20100223739A1-20100909-C00025.png) | ||
JPH0452932B2 (US20100223739A1-20100909-C00025.png) | ||
JPS6010273A (ja) | 原稿走査装置 | |
US4355891A (en) | Reduction of lamp strobing effects in a reproducing apparatus | |
US4490034A (en) | Apparatus for correcting an unevenness in an intensity of illumination of an original in a copying machine capable of variable magnification | |
JPS5792348A (en) | Slit switching mechanism | |
JP2687523B2 (ja) | 露光装置の照度むら補正装置 | |
JPS5737342A (en) | Variable magnification copying machine | |
JPS5891475A (ja) | 画像形成装置 | |
JPS6090462A (ja) | マイクロフイルムの自動複写電送方法 | |
JPS60134227A (ja) | スリツト露光型変倍複写機の露光量制御装置 | |
JPS6120853B2 (US20100223739A1-20100909-C00025.png) | ||
JPS597354A (ja) | 複写機の原稿濃度検知装置 | |
JPS595858Y2 (ja) | スリット露光型複写機 | |
JPS60134226A (ja) | スリツト露光型変倍複写機の露光量制御装置 | |
JPS5792342A (en) | Picture reproducing method | |
JPS6046538A (ja) | 複写機の変倍光学系の光量調整装置 | |
JPS6018972B2 (ja) | 複写機における露光量補正装置 | |
JPH0652374B2 (ja) | 複写機の変倍光学系の光量調整装置 | |
JPH0820677B2 (ja) | 変倍光学装置 | |
JPS6046542A (ja) | 複写機の露光量調整装置 | |
JPH0743496B2 (ja) | 画像露光装置 | |
JPS58154861A (ja) | スリツト露光型電子複写機の照度補正装置 | |
JPS572062A (en) | Exposure device of copying machine | |
JPS58169141A (ja) | 電子複写機における結像光学系 |