Method of preparing dampening transfer and material conditioning roller
Abstract
Abstract A fluid transfer and material conditioning roller, and method of preparing same, wherein a metallic roller is chrome plated, the surface of the chrome plating is ground and polished to provide a very smooth, uninterrupted surface thereon, the surface is treated with a solution of chrome solvent such as hydrochloric, or sulfuric acid mixed with equal parts of water and gum arabic to remove chromium oxide from the surface thereof and to coat said surface with an oxidation-preventing coating to render the roller permanently hydrophilic. The roller is particularly adaptable for use in a continuous duty dampening system such as that shown in Dahlgren U.S. Pat. No. 3,168,037, for transferring dampening fluid to a lithographic plate by depositing the fluid on a film of ink from which it is transferred to the plate. The roller has further applicability in transferring fluid to a moving web or other surface and for conditioning surfaces such as polishing and calendaring.
Inventors
- 👤 Harold P Dahlgren
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |