Diazo heat-sensitive recording material
US5543260A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1994 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Nov 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diazo heat-sensitive recording material containing a support having provided thereon a recording layer containing a diazo compound, a coupler, and an organic base, wherein the diazo compound is a compound represented by formula (I): ##STR1## wherein R.sub.1 represents --C(Z.sub.1)(Z.sub.2)--CH.sub.2 --A, --CH.sub.2 --C(Z.sub.1)(Z.sub.2)--A or --{C(Z.sub.1)(Z.sub.2)}.sub.m --A, PA1 wherein Z.sub.1 represents an alkyl group, an aralkyl group or an aryl group; Z.sub.2 represents a hydrogen atom, an alkyl group, an aralkyl group or an aryl group; A represents a halogen atom, an acyl group, a cyano group, or a group containing at least one oxygen, nitrogen, phosphorus or sulfur atom through which A is bonded to --CH.sub.2 -- or Z.sub.2 ; and m represents an integer of 1 to 5; R.sub.2 and R.sub.3, which may be the same or different, each represent an alkyl group, an aralkyl group or an aryl group; R.sub.1 and R.sub.2 may be connected together via A to form a ring; and X represents an acid anion, and the coupler is a compound having at least 20 carbon atoms in total, represented by formula (II): ##STR2## wherein Y.sub.1 and Y.sub.2, which may be the same or different, each represent a h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.