Article for use in forming a permanent image using a temporary marker
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United States of America Patent
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-
Feb 14, 1995
Grant Date -
N/A
app pub date -
Jan 25, 1993
filing date -
Jan 25, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A porous material having a top surface and a bottom surface, and a dye applied to the bottom surface of the porous material. The dye is soluble in a volatile imaging liquid contained in a suitable marker, such that when the volatile liquid contacts the top surface of the porous media, the volatile liquid penetrates the porous media, dissolves at least some of the dye to provide a dye solution with at least some of the dye solution migrating to the top surface, and evaporates leaving a permanently visible mark of dye residue on the top surface of the porous material.
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