GB1260722A - Improvements in physical development in an image reproduction process - Google Patents
Improvements in physical development in an image reproduction processInfo
- Publication number
- GB1260722A GB1260722A GB173469A GB173469A GB1260722A GB 1260722 A GB1260722 A GB 1260722A GB 173469 A GB173469 A GB 173469A GB 173469 A GB173469 A GB 173469A GB 1260722 A GB1260722 A GB 1260722A
- Authority
- GB
- United Kingdom
- Prior art keywords
- noble
- silver
- nuclei
- free metal
- metal
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/58—Processes for obtaining metallic images by vapour deposition or physical development
-
- 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
- G03C1/64—Compositions containing iron compounds as photosensitive substances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Photoreceptors In Electrophotography (AREA)
- Chemically Coating (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
1,260,722. Physical development of non-silver images. MINNESOTA MINING & MFG CO. Jan. 10, 1969 [Jan. 11, 1968; Feb.7, 1968], No. 1734/69. Heading G2C. [Also in Division C7] An image reproduction process comprises exposing a photo-sensitive layer of a photosensitive medium to a light image, the said layer comprising a composition which upon light exposure directly generates nuclei of a metal which is more noble than silver (i.e. metals which are less readily oxidized than silver) and is catalytic to the electroless deposition of a non-noble free metal, and providing non-noble free metal selectively on these nuclei by electroless deposition to provide a visible print of the light image, the photo-sensitive layer having incorporated therein or in contact therewith prior to exposure to the light image at least one salt of bismuth, antimony, lead, tin or, when the nuclei more noble than silver are not formed from a gold salt, silver or gold and/or after exposure the non-noble free metal in the presence of at least one salt of bismuth, antimony, lead, tin, titanium, tungsten or chromium being selectively provided on the nuclei. The non-noble free metal is preferably nickel and/or cobalt, and the metal which is more noble than silver is preferably palladium. The salts referred to above may be gold chloride, silver nitrate, bismuth trichloride, antimony trichloride, lead acetate, tin tetrachloride, sodium tungstate, chromium chloride or chromium fluoride. In the examples the light-sensitive entity is ferric ammonium oxalate/palladium chloride or ferric ammonium oxalate/ammonium chloropalladate. This process provides a continuous tone image reproduction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3410468 | 1968-01-11 | ||
IT3468568 | 1968-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1260722A true GB1260722A (en) | 1972-01-19 |
Family
ID=26328984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB173469A Expired GB1260722A (en) | 1968-01-11 | 1969-01-10 | Improvements in physical development in an image reproduction process |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4840425B1 (en) |
BE (1) | BE726734A (en) |
DE (1) | DE1900983A1 (en) |
FR (1) | FR2000144A1 (en) |
GB (1) | GB1260722A (en) |
-
1969
- 1969-01-09 DE DE19691900983 patent/DE1900983A1/en active Pending
- 1969-01-10 BE BE726734D patent/BE726734A/xx not_active IP Right Cessation
- 1969-01-10 GB GB173469A patent/GB1260722A/en not_active Expired
- 1969-01-10 FR FR6900242A patent/FR2000144A1/fr active Pending
- 1969-01-10 JP JP174269A patent/JPS4840425B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4840425B1 (en) | 1973-11-30 |
DE1900983A1 (en) | 1969-09-04 |
FR2000144A1 (en) | 1969-08-29 |
BE726734A (en) | 1969-06-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |