Package of rolled photosensitive material
US5222601A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1992 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | May 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Packages of a rolled photosensitive material comprise a core and a photosensitive material wound around the core, and one package further comprises a light-shielding leader connected with an end of the photosensitive material to shield the circumferential surface of the photosensitive material from light and a pair of light-shielding covers adhered to both sides of the leader in a peelable state to shield the side surfaces of the photosensitive material. Another package further comprises a light-shielding leader connected with an end of the strip material to shield the circumferential surface of the photosensitive material from light and a pair of side light-shielding covers adhered to shield both sides of the rolled photosensitive material so that the joining end substantially conforms to a boundary between the circumferential surface and the side surface of the photosensitive material, wherein at least one of the light-shielding leader and the side light-shielding cover is made of a tearable material in the boundary direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.