GB195377A - - Google Patents
Info
- Publication number
- GB195377A GB195377A GB7847/23A GB784723A GB195377A GB 195377 A GB195377 A GB 195377A GB 7847/23 A GB7847/23 A GB 7847/23A GB 784723 A GB784723 A GB 784723A GB 195377 A GB195377 A GB 195377A
- Authority
- GB
- United Kingdom
- Prior art keywords
- printing
- negative
- frame
- edges
- recess
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000010985 leather Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 210000002445 nipple Anatomy 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 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
- G03B27/20—Maintaining or producing contact pressure between original and light-sensitive material by using a vacuum or fluid pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US195377TA | 1922-03-25 | 1922-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB195377A true GB195377A (enrdf_load_stackoverflow) | 1924-02-07 |
Family
ID=31945446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7847/23A Expired GB195377A (enrdf_load_stackoverflow) | 1922-03-25 | 1923-03-19 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB195377A (enrdf_load_stackoverflow) |
-
1923
- 1923-03-19 GB GB7847/23A patent/GB195377A/en not_active Expired
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