Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Reexamination Certificate
2007-09-18
2007-09-18
Hess, Bruce H. (Department: 1774)
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
C430S270110, C503S209000, C503S220000, C503S221000
Reexamination Certificate
active
10365186
ABSTRACT:
Systems and methods of labeling optical disk recording media using black leuco dyes in an electromagnetic radiation sensitive composition are described. Black leuco dyes containing isobenzofuranone are prepared in various compositions that can include activators, radiation absorbers, non-leuco colorants, and/or a variety of carriers. The leuco dye compositions can be applied and prepared to achieve a desired visual effect upon development of the black leuco dye.
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