Multi-gradation recording method and thermal transfer recording medium used in the method
US6633320B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Sep 11, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A multi-gradation recording method comprising the steps of: providing a thermal transfer recording medium comprising a substrate, a release layer, a first ink layer and a second ink layer provided in this order on the substrate, and carrying out a gradation recording using the thermal transfer recording medium, the step of carrying out a gradation recording comprising: (a) in the case of recording in a middle density/high density region, carrying out a gradation expression based on an area gradation expression by transferring the first ink layer and the second ink layer together, and (b) in the case of recording in a low density region, carrying out a gradation expression by transferring only the second ink layer by causing a cohesive failure in the second ink layer, thereby changing the area of transferred ink per one dot and the thickness of transferred ink dots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.