Photographic element having a transparent magnetic recording layer
US5427900A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1994 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Feb 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photographic element comprising a support having provided thereon a light-sensitive layer and a transparent magnetic recording layer, the magnetic recording layer comprising a transparent polymeric binder, ferro-magnetic particles and tin oxide particles, the magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 1.times.10.sup.-10 mg/.mu.m.sup.3, the tin oxide particles having a median diameter of less than 0.15 .mu.m and being present in the transparent magnetic layer in an amount of from 300 to 1200 percent by weight based on the weight of the binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.