FR2098849A5 - Photocopy process - by formation of vesicular image on master sheet - Google Patents
Photocopy process - by formation of vesicular image on master sheetInfo
- Publication number
- FR2098849A5 FR2098849A5 FR7028003A FR7028003A FR2098849A5 FR 2098849 A5 FR2098849 A5 FR 2098849A5 FR 7028003 A FR7028003 A FR 7028003A FR 7028003 A FR7028003 A FR 7028003A FR 2098849 A5 FR2098849 A5 FR 2098849A5
- Authority
- FR
- France
- Prior art keywords
- master sheet
- image
- absorption
- original
- formation
- 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
- G03C5/60—Processes for obtaining vesicular images
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
Process is one in which a master sheet is contacted with an original pattern and exposed by reflection, through the master sheet to radiation of suitable wavelength during a predetermined period. The master sheet comprises a translucent support and an optically homogeneous and translucent filmogenic cpd. which forms a gas when exposed to radiation and which has one or more absorption peaks. In the process, the actinic rays used for exposure exclude the absorption peak frequencies of the diazonium compd. to reduce the absorption of these radiations and allow their transmission through the film and then differential reflection by the image zones of the original. The gas formed by the diazonium cpd. is confined during the contact period in the expanded film forming cells which diffuse the rays thereby increasing preferentially the probability of local absorption of these rays resulting in the formation of a versicular image coresponding to the image of the original.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7028003A FR2098849A5 (en) | 1970-07-29 | 1970-07-29 | Photocopy process - by formation of vesicular image on master sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7028003A FR2098849A5 (en) | 1970-07-29 | 1970-07-29 | Photocopy process - by formation of vesicular image on master sheet |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2098849A5 true FR2098849A5 (en) | 1972-03-10 |
Family
ID=9059441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7028003A Expired FR2098849A5 (en) | 1970-07-29 | 1970-07-29 | Photocopy process - by formation of vesicular image on master sheet |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2098849A5 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0000425A1 (en) * | 1977-07-07 | 1979-01-24 | Bexford Limited | Light-sensitive vesicular recording material |
EP0012507A2 (en) * | 1978-12-11 | 1980-06-25 | Bexford Limited | Reflex copying process onto light-sensitive recording materials, the resulting imaged material and its use for optical projection |
-
1970
- 1970-07-29 FR FR7028003A patent/FR2098849A5/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0000425A1 (en) * | 1977-07-07 | 1979-01-24 | Bexford Limited | Light-sensitive vesicular recording material |
EP0012507A2 (en) * | 1978-12-11 | 1980-06-25 | Bexford Limited | Reflex copying process onto light-sensitive recording materials, the resulting imaged material and its use for optical projection |
EP0012507A3 (en) * | 1978-12-11 | 1981-01-07 | Bexford Limited | Reflex copying process onto light-sensitive recording materials, the resulting imaged material and its use for optical projection |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |