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US 5,846,901 AGranted
Color-forming compounds and their use in carbonless imaging
AssigneeMinnesota Mining and Manufacturing Company
InventorNusrallah Jubran
Life of this patent
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Abstract
This invention includes novel 2,5-bis-bis(4-amino)phenyl!hydroxymethyl!substituted furan, thiophene, and pyrrole color-forming compounds and the reaction of these compounds or 2-mono-bis(4-amino)phenyl!hydroxymethyl!substituted furan, thiophene, and pyrrole color-forming compounds to form colored compounds. The invention also includes the use of these color-forming compounds in the manufacture and imaging of thermal imaging papers and pressure-sensitive imaging papers.
Claims13
An imaging construction comprising:
- a first substrate having a front and back surface;
- coated on at least one of the front and the back surfaces of the first substrate, a color-forming compound selected from the group consisting of 2-mono-bis(4-amino)phenyl!hydroxymethyl!substituted furan, thiophene and pyrrole compounds and 2,5-bis-bis(4-amino)phenyl!hydroxymethyl!substituted furan, thiophene and pyrrole color-forming compounds;
- a developer;
- and
- a means for separating the color-forming compound from the developer until the construction is subjected to activating pressure.
2 more elements
An imaging construction comprising:
- a substrate having a front and back surface;
- coated on at least one of the front and the back surfaces of the substrate, a color-forming compound selected from the group consisting of 2-mono-bis(4-amino)phenyl!hydroxymethyl!substituted furan, thiophene, and pyrrole compounds and 2,5-bis-bis(4-amino)phenyl!hydroxymethyl!substituted furan, thiophene, and pyrrole color-forming compounds;
- a developer;
- and
- a means for separating the color-forming compound from the developer until the construction is subjected to heat.
2 more elements
Dependencies are inferred from the claim text.