Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making named article
Reexamination Certificate
2007-01-23
2007-01-23
Chea, Thorl (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making named article
C430S320000, C430S322000, C430S945000, C369S116000, C369S284000
Reexamination Certificate
active
09959480
ABSTRACT:
When manufacturing a recording medium, a material layer12formed on a substrate11that composes the recording medium is exposed to a laser beam in accordance with a recording pattern. The material layer12has a predetermined reflectivity for the laser beam13so as to produce return light for the laser beam13. By detecting this return light, the focusing of the laser beam on the material layer is adjusted. By doing so, a laser beam can be easily and accurately focused on a material layer during a process in which a laser beam is shone, in accordance with a recording pattern, onto a material layer formed on a recording medium or a production plate used when manufacturing a recording medium.
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Chea Thorl
Kananen Ronald P.
Rader & Fishman & Grauer, PLLC
Sony Corporation
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