Production of coloured colloid patterns
Abstract
Abstract COLOURED COLLOID PATTERNS ARE PRODUCED BY MEANS OF COLORED HYDROPHILIC COLLOID LAYERS CONTAINING A DIAZONIUM COMPOUND WHICH BY EXPOSURE TO ACTIVATING ELECTROMAGNETIC RADIATION DECOMPOSES TO GIVE PRODUCTS PROVIDING A DECREASE IN HARDENABILITY OF A COLLOID OF SAID LAYERS. TO PRODUCE A MULTICOLOUR PRINT, DIFFERENTLY COLURED HYDROPHILIC COLLOID LAYERS CONTAINING SAID DIAZONIUM COMPOUND ARE USED, SUCH LAYERS BEING TRANSFERRED SUCCESSIVELY FROM A TEMPORARY SUPPORT TO A COMMON PERMANENT SUPPORT AND EXPOSED IN REGISTRATION BUILDING UP AFTER TREATMENT WITH A HARDENING AGENT FOR THE COLLOID AND WASHOFF OF THE EXPOSED NON-HARDENED PORTIONS OF EACH DIFFERENTLY COLOURED COLLOID LAYER, A MULTICOLOR PRINT. THE COLLOID LAYERS ARE PREFERABLY COLOURED WITH WATERINSOLUBLE PIGMENTS APPLIED IN A DETERMINED AMOUNT IN THEIR COATING COMPOSITIONS.
Inventors
- 👤 Albert Lucien Poot
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |