Magnetic card having embossed portions and a magnetic layer having magnetic powders specified binder resins and a tensile elongation at break of 50 percent or more
US5356717A · kind A · utility
27Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a magnetic card which comprises a substrate of a thermoplastic resin and a magnetic recording layer provided on the whole surface of at least one side of the substrate, wherein necessary matters such as letters and figures can be formed in a given area by embossing treatment, and wherein the magnetic recording layer consists of a magnetic film which contains 70% by weight or more of magnetic powders having a coercive force of 300 Oe or higher and which has a tensile break elongation of 50% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.