Photographic materials
Abstract
Abstract To improve the adhesion of an antihalation layer to a polyethylene terephthalate film the antihalation layer is formed from a dye or finely divided pigment dispersed in a waterinsoluble alkali-soluble binder consisting of 60 to 85 percent by weight of polymethylene-hydroxybenzoic acid and 40 to 15 percent by weight of a copolymer of 20 to 50 percent by weight of acrylic acid or methacrylic acid, 15 to 79 percent by weight of an alkyl acrylate and 1 to 50 percent by weight of an alkyl methacrylate. When the photographic material comprising the antihalation layer thus formed is treated in a highly alkaline bath the antihalation layer can be rinsed away completely with pure water before entering the first photographic developer bath.
Inventors
- 👤 Paesschen A Van
- 👤 J Herbots
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |