| 摘要 |
A pressure-sensitive or heat-sensitive recording material, comprising a support, having a developer or both a color former and a developer in or on the support, wherein the developer consists of a metal complex compound of the formula (R)k-nMe(An)n/r (I) wherein Me is an n-valent metal ion, R is a unidentate or polydentate colorless organic ligand which is complexed with the metal ion through heteroatoms, An is a r-valent anion, k is the coordination number 4 or 6 of the metal ion, depending on the metal, n is 1, 2, 3 or 4, and r is 1 or 2. |
