Shape-restoring device and a restoring method for distorted filmstrips
US9250511B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Feb 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D15/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shape-restoring device and a restoring method for distorted filmstrips are proposed for restoring filmstrips that are distorted due to vinegar syndrome. During the implementation of the method, the air compressor is started such that pressure reaches 0.6-0.9 MPa; three-way valves are regulated so as to introduce pressure into film-clasping cylinders and pressing-plate cylinders via diverter valves; the cylinder spindles of the film-clasping cylinders move the upper collets fixedly connected therewith, for fixing filmstrips; the cylinder spindles of the pressing-plate cylinders move the pressing plate fixedly connected therewith such that the binding underlay on the lower surface of the pressing plate contacts the heating plate; in this way, pressuring, heating and restoring are carried out. Through steps of pressing, heating, fixing filmstrips, shape-restoring and transporting the distorted filmstrips under the pressure of 0.5-0.8 MPa and the temperature of 80-90° C. for 50-80 s, the distorted filmstrips can be restored segment by segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.