GB746948A - Improvements in photographic reproduction processes and in materials therefor - Google Patents
Improvements in photographic reproduction processes and in materials thereforInfo
- Publication number
- GB746948A GB746948A GB2653052A GB2653052A GB746948A GB 746948 A GB746948 A GB 746948A GB 2653052 A GB2653052 A GB 2653052A GB 2653052 A GB2653052 A GB 2653052A GB 746948 A GB746948 A GB 746948A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- emulsion
- positive
- sulphide
- pigment
- 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
- G03C8/06—Silver salt diffusion transfer
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
746,948. Photographic layers; direct positive image production. KODAK, Ltd. Oct. 21, 1953 [Oct. 22, 1952], No. 26530/52. Class 98 (2). .A transparent support as of glass or film is provided with a layer of a dispersion of a sulphide, selenide or telluride, preferably of zinc sulphide; a layer containing a pigment, preferably gelatine with baryta or rutile; and a layer of light-sensitive silver halide emulsion. The layers may be in reverse order, the emulsion lying next to the support, and in this case the sulphide, selenide or telluride may be present in reduced amount. Exposure and development of the light-sensitive emulsion layer with simultaneous or subsequent treatment with a silver halide solvent produces a negative image in the emulsion and a corresponding positive in the sulphide dispersion layer, which positive may be viewed in the first arrangement through the transparent support and in the second directly, the high-lights of the positive being provided in both arrangements by the intermediate pigment layer. In the first arrangement, emulsion uppermost, an additional positive may be made by use of an imagereceiving layer on a separate support in contact with the exposed emulsion layer during processing. A further alternative is the provision of a stripping layer between the emulsion and the pigment layer, whereby, after preparation of the positive, the emulsion layer containing the negative silver image may be transferred to another transparent support, when it could be used for the production of prints in the normal manner. Specifications 654,631, 746,174 and 746,946 are referred to.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE523587D BE523587A (en) | 1952-10-22 | ||
GB2653052A GB746948A (en) | 1952-10-22 | 1952-10-22 | Improvements in photographic reproduction processes and in materials therefor |
FR1085304D FR1085304A (en) | 1952-10-22 | 1953-10-20 | Photosensitive product and method for obtaining photographic images by inversion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2653052A GB746948A (en) | 1952-10-22 | 1952-10-22 | Improvements in photographic reproduction processes and in materials therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
GB746948A true GB746948A (en) | 1956-03-21 |
Family
ID=10245084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2653052A Expired GB746948A (en) | 1952-10-22 | 1952-10-22 | Improvements in photographic reproduction processes and in materials therefor |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE523587A (en) |
FR (1) | FR1085304A (en) |
GB (1) | GB746948A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2966408A (en) * | 1957-03-14 | 1960-12-27 | Polaroid Corp | Photographic films |
US3364024A (en) * | 1963-06-24 | 1968-01-16 | Eastman Kodak Co | Photographic process |
US3415647A (en) * | 1965-05-17 | 1968-12-10 | Eastman Kodak Co | Photographic silver halide diffusion transfer process |
US3507650A (en) * | 1966-01-11 | 1970-04-21 | Polaroid Corp | Method of depositing viscous photographic reagents |
US3547641A (en) * | 1966-06-20 | 1970-12-15 | Du Pont | Planographic offset printing masters |
US3709687A (en) * | 1970-04-06 | 1973-01-09 | Polaroid Corp | Diffusion transfer receiving element with varing concentration of precipitating nuclei |
-
0
- BE BE523587D patent/BE523587A/xx unknown
-
1952
- 1952-10-22 GB GB2653052A patent/GB746948A/en not_active Expired
-
1953
- 1953-10-20 FR FR1085304D patent/FR1085304A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2966408A (en) * | 1957-03-14 | 1960-12-27 | Polaroid Corp | Photographic films |
US3364024A (en) * | 1963-06-24 | 1968-01-16 | Eastman Kodak Co | Photographic process |
US3415647A (en) * | 1965-05-17 | 1968-12-10 | Eastman Kodak Co | Photographic silver halide diffusion transfer process |
US3507650A (en) * | 1966-01-11 | 1970-04-21 | Polaroid Corp | Method of depositing viscous photographic reagents |
US3547641A (en) * | 1966-06-20 | 1970-12-15 | Du Pont | Planographic offset printing masters |
US3709687A (en) * | 1970-04-06 | 1973-01-09 | Polaroid Corp | Diffusion transfer receiving element with varing concentration of precipitating nuclei |
Also Published As
Publication number | Publication date |
---|---|
FR1085304A (en) | 1955-01-31 |
BE523587A (en) |
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