CH578746A5 - - Google Patents
Info
- Publication number
- CH578746A5 CH578746A5 CH512672A CH512672A CH578746A5 CH 578746 A5 CH578746 A5 CH 578746A5 CH 512672 A CH512672 A CH 512672A CH 512672 A CH512672 A CH 512672A CH 578746 A5 CH578746 A5 CH 578746A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
- G03B27/727—Optical projection devices wherein the contrast is controlled optically (e.g. uniform exposure, two colour exposure on variable contrast sensitive material)
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Projection-Type Copiers In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712124782 DE2124782A1 (de) | 1971-05-19 | 1971-05-19 | Vorrichtung an einer Reproduktionskamera zur Steuerung des Schwärzungsumfangs von Halbtonnegativen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH578746A5 true CH578746A5 (https=) | 1976-08-13 |
Family
ID=5808294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH512672A CH578746A5 (https=) | 1971-05-19 | 1972-04-08 |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH578746A5 (https=) |
| DE (1) | DE2124782A1 (https=) |
| GB (1) | GB1392647A (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227840A (en) * | 1991-06-03 | 1993-07-13 | Eastman Kodak Company | Automated photographic contact printing system |
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1971
- 1971-05-19 DE DE19712124782 patent/DE2124782A1/de active Pending
-
1972
- 1972-04-08 CH CH512672A patent/CH578746A5/xx not_active IP Right Cessation
- 1972-05-08 GB GB2131572A patent/GB1392647A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1392647A (en) | 1975-04-30 |
| DE2124782A1 (de) | 1972-12-07 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |