Restoration solution for cine film bubble and restoration method
US9841666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Aug 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C11/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention discloses a restoration solution for cine film bubble and a restoration method. The restoration solution comprises 100 parts by volume of n-butanol, 60 to 120 parts by volume of lacquer thinner having 5% by mass of ethyl cellulose, 8 to 20 parts by volume of diphenyl isooctyl phosphite, 2 to 10 parts by volume of bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, and 2 to 15 parts by volume of petroleum ether. The present invention integrates micro-restoration, bubble puncture and optical filling, and effectively restores a bubble having a diameter of 0.1 mm to 1 mm generated between a film base layer and an emulsion layer of a cine film. The present invention has advantages of simple method of operation, low cost and good controllability. And the used restoration solution has good thermal stability, oxidation resistance, and permeability, and can eliminate the phenomenon of light scattering within the bubble, so that patterns and writing of the original image data are explicitly presented, and a better restoration effect is achieved without damages to films. Therefore, the restoration solution has good application values and market prospects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.