Thermosensitive recording material
US5043313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1990 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3336
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermosensitive recording material comprising (a) a support, and (b) a thermosensitive recording layer formed on the support, comprising a leuco dye and a color developing agent comprising a metal salt or metal complex of a compound having formula (I), which is capable of inducing color formation in the leuco dye upon application of heat thereto: ##STR1## wherein X represents a halogen, an alkyl group having 1 to 10 carbon atoms, or an alkoxyl group having 1 to 10 carbon atoms; R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen, a halogen, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an aralkyloxyl group having 7 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, an alkylthio group having 1 to 10 carbon atoms, an aralkylthio group having 6 to 20 carbon atoms or an arylthio group having 6 to 20 carbon atoms, R.sup.1 and R.sup.2, or R.sup.2 and R.sup.3 may form together with an adjacent benzene ring a naphthalene ring, a tetrahydronaphthalene ring or an indan ring; and m is an integer of 1 to 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.