Thermally sensitive recording medium
US6303540A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3375
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermally sensitive recording medium which has thermally sensitive recording layer containing colorless or pale colored basic leuco dye and organic color developer as main components on a substrate, wherein said thermally sensitive recording layer contains diphenylsulfone bridgeable type compound represented by general formula (1) and at least one compound represented by general formula (1). ##STR1## PA1 In general formula (2), X and Y can be different and indicates a saturated or an unsaturated liner or grafted hydrocarbon group of carbon number 1-12 which can possess ether bond, or indicates ##STR2## PA2 wherein R indicates a methylene group or an ethylene group, T indicates a hydrogen atom or an alkyl group of carbon number 1-4, and R.sub.1 -R.sub.6 independently indicate a halogen atom, an alkyl group of carbon number 1-6, or an alkenyl group, further, m, n, p, q, r, t indicate an integer number of 0-4 and when are bigger than 2, R.sub.1 -R.sub.6 can be different, and a is an integer of 0-10. ##STR3## PA3 In general formula (2), R.sub.7 represents an alkyl group of carbon number 1-6 or an electron attracting group, u is an integer of 0-2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.