Thermosensitive recording material
US5312796A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | May 14, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3333
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermosensitive recording material having a high whiteness and capable of forming thereon colored images having an excellent oil and plasticizer resistance and persistency over a long time, comprises a thermosensitive colored image forming layer formed on a sheet substrate and comprising, together with a dye precursor and a binder, a color-developing agent comprising at least one compound of the formulae (I) to (VIII). ##STR1## wherein R.sub.1 =H, alkyl, aryl, aralkyl, alkenyl or cycloalkyl, R.sub.2 and R.sub.3 =H, alkyl, aryl aralkyl, alkenyl or acetyl, or are fuse-bonded to form a cyclic structure, R.sub.4 =alkyl, aryl, aralkyl, alkenyl, piperidino, succinimide, .rho.-benzylphenyl, etc., R.sub.5 and R.sub.6 =H, alkyl, aryl, aralkyl, alkenyl cycloalkyl, etc., or are fuse-bonded to form ##STR2## R.sub.7, R.sub.9, and R.sub.11 =unsubstituted or substituted aromatic groups with alkyl, alkoxyl, acyl, etc., R.sub.8, R.sub.10 and R.sub.12 =unsubstituted or substituted alkyl, aryl, aralkyl or alkenyl with alkyl, alkoxyl, acyl, nitro or halogen, and R.sub.13 =H or unsubstituted or substituted alkyl, aryl aralkyl or alkenyl with alkyl, alkoxyl, acyl, nitro or halogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.