GB477754A - Improvements in or relating to diazo type photographic printing paper - Google Patents
Improvements in or relating to diazo type photographic printing paperInfo
- Publication number
- GB477754A GB477754A GB1604337A GB1604337A GB477754A GB 477754 A GB477754 A GB 477754A GB 1604337 A GB1604337 A GB 1604337A GB 1604337 A GB1604337 A GB 1604337A GB 477754 A GB477754 A GB 477754A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- zinc acetate
- paper
- contain
- coupling component
- 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
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/52—Compositions containing diazo compounds as photosensitive substances
- G03C1/61—Compositions containing diazo compounds as photosensitive substances with non-macromolecular additives
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
477,754. Photographic diazotype processes. SOKAL, S. (Kalle & Co., Akt.-Ges.) Oct. 12, 1936, No. 16043/37. Divided out of 467,313. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 13, 1937.] [Class 98 (ii)] In the preparation of light-sensitive materials by applying to a base a diazo compound with or without an azo coupling component and rubbing in a developing powder which may also contain the coupling component, the powder consists of a neutral reacting salt of a weak base with a weak acid fugitive in steam. Suitable salts are zinc acetate and zinc formate. In examples, paper is sensitized with a solution of the diazo compound of 1-amino-4-benzoylamino-2: 5-diethoxybenzene and citric acid, and a powder consisting of phloroglucine and zinc acetate which may contain a diluent such as starch, is rubbed into the layer. Loose powder may be blown off by dry air under pressure, the paper may be finally calendered. Lead acetate may be used in place of zinc acetate. The diazo compounds used may be such as couple in neutral or acid condition.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1604336 | 1936-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB477754A true GB477754A (en) | 1938-01-05 |
Family
ID=10070096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1604337A Expired GB477754A (en) | 1936-10-12 | 1936-10-12 | Improvements in or relating to diazo type photographic printing paper |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB477754A (en) |
-
1936
- 1936-10-12 GB GB1604337A patent/GB477754A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1063132A (en) | Improvements in or relating to light-sensitive two-component diazotype materials adapted for heat development | |
| GB680423A (en) | Improvements in or relating to photographic developing materials and methods | |
| GB427962A (en) | Improvements in or relating to the production of photographic diazotype prints | |
| US2196950A (en) | Photographic printing process | |
| GB311196A (en) | Improvements in or relating to the manufacture of light-sensitive materials | |
| GB828390A (en) | Diazotype materials containing coupling components for high opacity ultraviolet yellows and visually dense sepias | |
| GB808527A (en) | Diazotype photoprinting materials and processes for preparing same | |
| GB711390A (en) | Improvements in or relating to photographic light-sensitive diazotype materials | |
| GB560253A (en) | Improvements in the production of photographic silver images in blue-black tones using a methylol nitromethane | |
| GB656364A (en) | Diazotype photo-printing layers containing resorcinol derivatives | |
| GB636761A (en) | Diazotype layers containing resorcinol mono-ethers | |
| GB477754A (en) | Improvements in or relating to diazo type photographic printing paper | |
| GB650046A (en) | Diazotype photoprinting materials of the two component class containing as azo-coupling components acylated aminonaphthols | |
| GB467313A (en) | Improvements in or relating to diazo type photographic printing paper | |
| GB695824A (en) | Improvements relating to photoprinting materials and processes | |
| US3261684A (en) | Process and developer for developing exposed one-component diazotype materials | |
| US2487034A (en) | 2.8-dihydroxynaphthalene-6-sulfonic acid as the azo component for diazotype prints | |
| GB282894A (en) | Process for obtaining photographic images | |
| GB626391A (en) | Photographic diazotype compositions containing n-acylamino phenol couplers | |
| GB332552A (en) | Improvements in or relating to the preparation of photographic diazotypes | |
| US2495827A (en) | Diazotype materials stabilized with an alpha-alkylidene-polymethylene dicarboxylic acid | |
| GB638419A (en) | Diazotype light-sensitive layers containing 4-bromo resorcinol | |
| US3736143A (en) | Light-sensitive diazonium compounds and diazotype materials | |
| GB943113A (en) | Improvements relating to reproduction papers | |
| US3607287A (en) | Negative-working two-component diazosulfonate material |