Once-writing phase change recording medium

Application Number: 00108679
Application Date: 2000.05.18
Publication Number: 1274152
Publication Date: 2000.11.22
Priority Information: 1999/5/18 US 09/313951
International: G11B7/24
Applicant(s) Name: Easman Kodak Co.
Inventor(s) Name: Y.-S. Tan;G. R. Aorin;G. Farogeo
Patent Agency Code: 72001
Patent Agent: chen jingjun
Abstract A recording medium includes a transparent substrate; a crystalline phase-change layer provided over the transparent substrate; a dielectric layer provided over the phase-change layer; a metallic reflector layer provided over the dielectric layer; and the crystalline phase-change layer having a thickness and phase-change material selected so that data can be recorded in it on a first write, but on second or subsequent writes the written data results in at least a 50% increase in data jitter.