NOTE PAD CONTAINING CARBONLESS COLOR-DEVELOPING MATERIAL
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United States of America Patent
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Issued Date -
Jan 19, 2012
app pub date -
Oct 26, 2010
filing date -
Jul 13, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A note pad includes: a stack of carbonless note sheets each of which includes: a substrate; and a color-developing coating layer formed on an upper surface of the substrate, and including a plurality of microcapsules and a carbonless color-developing material, each of the microcapsules encapsulating a reactive dye and being breakable, when subjected to a pressure, to release the reactive dye to react with the carbonless color-developing material for color development.
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