GB988538A - Improvements in photographic cameras - Google Patents
Improvements in photographic camerasInfo
- Publication number
- GB988538A GB988538A GB204962A GB204962A GB988538A GB 988538 A GB988538 A GB 988538A GB 204962 A GB204962 A GB 204962A GB 204962 A GB204962 A GB 204962A GB 988538 A GB988538 A GB 988538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- camera
- jan
- production
- positive print
- 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
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 abstract 1
- -1 polyethylene Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 abstract 1
- 239000001043 yellow dye Substances 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
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/66—Details specially adapted for holding half-tone screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
988,538. Photomechanical printing. INSTANT PHOTOSCREEN Inc. Jan. 19,1962 [Jan. 19,1961;0ct. 18,1961],No. 2049/62. Heading G2M. A photographic camera is provided with a half-tone screen removably secured to the camera directly in front of and covering the photosensitive surface, the screen having a flexible transparent base sufficiently rigid to maintain itself flat. As shown, applied to a camera for the production of a positive print by the silver salt diffusion process, the camera has a screen 30 secured in place by an adhesive strip 32 on one side, and, panachromatic film is used the screen may be dyed with a chrome-yellow dye. The opaque lines on the screen, which may be produced photographically, may be protected against abrasion by a thin transparent layer of polyethylene terephthate. It is stated that the positive print may be mounted directly in an "artists mechanical" for the production of a lithographic plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8415761A | 1961-01-19 | 1961-01-19 | |
| US14595461A | 1961-10-18 | 1961-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB988538A true GB988538A (en) | 1965-04-07 |
Family
ID=26770659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB204962A Expired GB988538A (en) | 1961-01-19 | 1962-01-19 | Improvements in photographic cameras |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB988538A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2262362A (en) * | 1991-12-06 | 1993-06-16 | Hung Ti Kun | A process for making a printing screen plate and the device therefor |
-
1962
- 1962-01-19 GB GB204962A patent/GB988538A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2262362A (en) * | 1991-12-06 | 1993-06-16 | Hung Ti Kun | A process for making a printing screen plate and the device therefor |
| GB2262362B (en) * | 1991-12-06 | 1995-10-11 | Hung Ti Kun | A process for making a printing screen plate and device therefor |
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