Thermal transfer ink, and thermal transfer ink ribbon
US5977208A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Aug 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24901
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a thermal transfer ink ribbon which has good ink transferability and is capable of producing transferred images which are sharp and have high durability. As the main constituent of a binding material of thermally fusible resin, fine particles of low slipperiness which are not softened at a temperature at which the binding material is softened are contained in an ink layer 13 when the ink layer 13 is deposited to produce a thermal transfer ink ribbon 1. Since the thermally fusible resin is used, the durability of transferred images is high. Because the fine particles are contained, the ink layer can be separated sharply from the thermal transfer ink ribbon 1. As the fine particles are of low slipperiness, no slippage occurs between the thermal transfer ink ribbon 1 and a transfer medium. The fine particles of low slipperiness have an average diameter ranging from 0.3 .mu.m to 3.0 .mu.m, and are made of one or more of a condensation resin of benzoguanamine and formaldehyde, a condensation resin of melamine and formaldehyde, a condensation resin of benzoguanamine, melamine, and formaldehyde, and tetrafluoroethylene. The fine particles of low slipperiness…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.