optical information recording medium

Abstract

Abstract PURPOSE:To prevent degradation of reproduction, by incorporating a specific cationic compound and a specific anionic compound into an organic coloring matter thin film mainly composed of polymethyn coloring matter provided on a substrate. CONSTITUTION:A recording layer containing cation shown by any one of formulae I-III, anion shown by any one of formulae IV-VI and polymethyn coloring matter is provided on a substrate. Furthermore, an underlying layer 3 and/or a protection layer 4 may be provided. (In the formulae, Z represents atom group, R1, R2 represent alkyl or aryl group, (m) is 0, 1 or 2, A represents formula VII or VIII, R3, R4, R5 and R6 represent hydrogen or alkyl group, X represents dibenzyl amino group or dialkyl amino group, Y is identical with X or hydrogen atom, R7 and R8 represent hydrogen, cyano group, alkyl group or aryl group, M represents nickel, palladium or platinum, R9, R10, R11 and R12 represent hydrogen, halogen, cyano group or hydroxyl group.)

Inventors

• 👤 Tsutomu Sato
• 👤 勉 佐藤
• 👤 Tatsuya Sakaeda
• 👤 栄田　辰也
• 👤 Keiko Ichinose
• 👤 一ノ瀬　恵子

Bibliographic Details