Laser beam writing material, material for forming the same, and display body
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United States of America Patent
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-
Aug 30, 2005
Grant Date -
May 1, 2003
app pub date -
Oct 16, 2002
filing date -
Oct 25, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A laser beam writing material having: silicon dioxide; and a titanium-containing compound fixed with the silicon dioxide and capable of being changed in color by irradiation with a laser beam; wherein when a color-changed portion in the laser beam writing material is formed by irradiation with the laser beam and exposed to the air at 600° C. for 30 minutes, contrast between the color-changed portion and a color-unchanged portion in the laser beam writing material is not lower than 0.60; a material for forming the laser beam writing material, having a mixture at least including the titanium-containing compound and an MQ resin; and a display body having a color-changed portion formed by irradiation with the laser beam in the laser beam writing material.
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