DE315454C - - Google Patents
Info
- Publication number
- DE315454C DE315454C DENDAT315454D DE315454DA DE315454C DE 315454 C DE315454 C DE 315454C DE NDAT315454 D DENDAT315454 D DE NDAT315454D DE 315454D A DE315454D A DE 315454DA DE 315454 C DE315454 C DE 315454C
- Authority
- DE
- Germany
- Prior art keywords
- drawings
- sheet
- tubes
- angle
- tension
- 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.)
- Active
Links
- 229920002160 Celluloid Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- G03B27/18—Maintaining or producing contact pressure between original and light-sensitive material
- G03B27/22—Maintaining or producing contact pressure between original and light-sensitive material by stretching over a curved surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Holders For Sensitive Materials And Originals (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE315454C true DE315454C (ru) |
Family
ID=568209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT315454D Active DE315454C (ru) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE315454C (ru) |
-
0
- DE DENDAT315454D patent/DE315454C/de active Active
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