Thermal recording medium capable of keeping width of mark train constant and recording method for the same
US5648134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | May 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Recording or erasing on a thermal recording medium is performed such a manner that a local region of a recording film on the recording medium is heated to a predetermined temperature to reversibly change the state of the local region between two states. In this method, the recording film is initialized in one of the two states. When the recording film is set in the other of the two states upon continuous or intermittent heating, a band-like region elongated in a recording direction on the recording film is formed to effect the erasing operation. In recording step, the local region of the recording film is heated to a predetermined temperature in accordance with information so as to include the band-like region in the local region to be heated and a state of the heated local region is caused to be identical with the state upon the initialization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.