Patent Number: 6,309,726

Title: Optical recording medium

Abstract: An optical recording medium incorporating a supporting body; a recording portion which is formed on either main surface of the supporting body and on which a signal is recorded; and a light permeable layer formed on the recording portion, wherein light is applied from a position adjacent to the light permeable layer to record/reproduce a signal, and carboxylic acid amine salt expressed by general formula (1) and/or general formula (2) is held on the surface which is irradiated with light ##STR1## where n is an integer from 1 to 3, each of R1 and R2 is hydrogen or a hydrocarbon group, R3 is a hydrocarbon group and R.sub.f is a perfluoroalkyl group having three or more carbon atoms, ##STR2## where at least either of R.sub.1 and R.sub.2 is perfluoroalkyl group having three or more carbon atoms, at least any one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 is hydrocarbon group having 12 or more carbon atoms and the rest of them are hydrogen or hydrocarbon group.

Inventors: Ono; Toshitsugu (Miyagi, JP), Kondo; Hirofumi (Miyagi, JP), Sakamoto; Tetsuhiro (Chiba, JP)

Assignee: Sony Corporation

International Classification: G11B 7/24 (20060101); G11B 7/254 (20060101); B32B 003/02 ()

Expiration Date: 10/30/2018