FR758890A - Improvements to photographic printers - Google Patents
Improvements to photographic printersInfo
- Publication number
- FR758890A FR758890A FR758890DA FR758890A FR 758890 A FR758890 A FR 758890A FR 758890D A FR758890D A FR 758890DA FR 758890 A FR758890 A FR 758890A
- Authority
- FR
- France
- Prior art keywords
- photographic printers
- printers
- photographic
- 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
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
- G03B27/02—Exposure apparatus for contact printing
- G03B27/14—Details
- G03B27/16—Illumination arrangements, e.g. positioning of lamps, positioning of reflectors
-
- 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
- G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Projection-Type Copiers In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US625726A US1933831A (en) | 1932-07-29 | 1932-07-29 | Photographic printing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR758890A true FR758890A (en) | 1934-01-24 |
Family
ID=24507303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR758890D Expired FR758890A (en) | 1932-07-29 | 1933-07-25 | Improvements to photographic printers |
Country Status (2)
Country | Link |
---|---|
US (1) | US1933831A (en) |
FR (1) | FR758890A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE743627C (en) * | 1934-03-16 | 1943-12-30 | Oedoen Riszdorfer Dr | Exposure meter for a photographic enlarger |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2607266A (en) * | 1949-09-26 | 1952-08-19 | Rabinowitz Jacob | Photographic printing apparatus |
GB984968A (en) * | 1962-05-04 | 1965-03-03 | Ilford Ltd | Photographic printing |
-
1932
- 1932-07-29 US US625726A patent/US1933831A/en not_active Expired - Lifetime
-
1933
- 1933-07-25 FR FR758890D patent/FR758890A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE743627C (en) * | 1934-03-16 | 1943-12-30 | Oedoen Riszdorfer Dr | Exposure meter for a photographic enlarger |
Also Published As
Publication number | Publication date |
---|---|
US1933831A (en) | 1933-11-07 |
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