Simultaneous coatings of stearamide lubricant layer
US6025015A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a photographic element which includes a support, and at least one light-sensitive silver halide layer on a front side of the support. The photographic element has on the backside of the support an antistatic layer; a transparent magnetic recording layer; and a lubricating overcoat layer. The lubricating overcoat layer is farthest from the support and includes a lubricant of the general formula: EQU R--CONH.sub.2 where R is a long chain hydrocarbon between 12 and 30 carbons, preferably between 16 and 22. The present invention also provides a method of producing an imaging support which includes, providing a support, and simultaneously coating on the support; a transparent magnetic recording layer including magnetic particles, a polymeric binder and an organic solvent, and a lubricating overcoat layer, the lubricating overcoat layer comprising a lubricant of the general formula: EQU R--CONH.sub.2 where R is a long chain hydrocarbon between 12 and 30 carbons, preferably between 16 and 22, and an organic solvent, and drying the magnetic recording layer and the lubricating overcoat layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.