| 摘要 |
<p>A data card having a pair of spaced apart information records (15 and 17). One record (15) is a strip of high resolution reflective laser recording material, such as a metallic film. The other strip (17) is a magnetic recording material. The strip of laser recording material has a capacity for recording at least 250,000 bits represented by pits having a dimension less than 50 microns.</p> |
