Phosphorescent marker for laboratory autography
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United States of America Patent
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Apr 19, 2005
Grant Date -
Apr 22, 2004
app pub date -
Oct 22, 2002
filing date -
Oct 22, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A laboratory autography marking pen capable of delivering a low viscosity phosphorescent marking ink that contains a homogeneous suspension of phosphor particles having an average particle size of between 10 and 40 microns, and whose afterglow half-life is less than 5 minutes. The marking pen further includes a high porosity fiber channel writing nib whose ink flow channels are of a sufficient size to allow the phosphor particles suspended in the ink to flow by capillary transport through these channels onto an ink receiving substrate material.
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