Light-shielding packaging system for photosensitive web roll
US6481904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C3/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-shielding packaging for a roll of continuous photosensitive web includes a tubular core having on each end a light-shielding flange disc; and a roll of a continuous photosensitive web wound on the core, which has a diameter identical to a diameter of the flange disc. The photosensitive web has at its leading end a light-shielding leader sheet which has a length larger than circumferential length of the flange disc and a width larger than a width of the photosensitive web, whereby each side portion of the leader sheet extends beyond the periphery of the flange disc to reach the outer surface of the flange disc. An adapter of rigid resin is provided which includes a hollow cylinder member having at its one end a flange member and which is attached to the core by inserting the cylinder member into the tubular core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.