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US 7,582,405 B2Granted
Image recording media and image layers
AssigneeHewlett-Packard Development Company, L.P.
InventorMakarand P. Gore
Life of this patent
Estimating the term…
Abstract
Imaging layers, image recording media, and methods of preparation of each, are disclosed.
Claims9
A method for preparing an image recording medium, the method comprising:
- providing a matrix, a radiation absorbing compound, an inorganic acid or salt thereof, and a reactant compound, wherein the inorganic acid or salt thereof is phosphovanadic acids or salts thereof, wherein the reactant compound includes an alpha amino alcohols containing NH2C(R1,R2)CH2OH, wherein R1 and R2 each is independently selected from the following:
- hydrogen, aryl, and alkyl groups, wherein the radiation absorbing compound absorbs radiation and initiates a reduction/oxidation reaction between the inorganic acid or salts thereof and the reactant compound to produce a color change;
- dissolving the radiation absorbing compound, the inorganic acid or salt thereof, and the reactant compound, in the matrix to form a matrix mixture;
- and
- disposing the matrix mixture onto a substrate, wherein the layer does not include a color former selected from a leuco dye and a phthalide color former.
2 more elements
An image recording medium comprising:
- a substrate having a layer disposed thereon, wherein the layer includes:
- a matrix;
- a radiation absorbing compound;
- an inorganic acid or salt thereof, wherein the inorganic acid or salt thereof is phosphovanadic acids or salts thereof;
- and
- a reactant compound, wherein the reactant compound includes an alpha amino alcohols containing NH2C(R1,R2)CH2OH, wherein R1 and R2 each independently selected from the following:
- hydrogen, aryl, and alkyl groups, wherein the radiation absorbing compound absorbs radiation and initiates a reduction/oxidation reaction between the inorganic acid or salts thereof and the reactant compound to produce a color change, wherein the layer does not include a color former selected from a leuco dye and a phthalide color former.
4 more elements
An image recording medium comprising:
- a substrate having a layer disposed thereon, wherein the layer includes:
- a matrix;
- a radiation absorbing compound;
- an inorganic acid or salt thereof, wherein the inorganic acid or salt thereof is phosphovanadic acids or salts thereof;
- and
- a reactant compound, wherein the reactant compound is selected from one the following:
- camphor, phenyglycinol, cholesterol, and combinations thereof, wherein the layer does not include a color former selected from a leuco dye and a phthalide color former, wherein a color change is produced from a reaction between the inorganic acid or salt and the reactant compound.
4 more elements
A method for preparing an image recording medium, the method comprising:
- providing a matrix, a radiation absorbing compound, an inorganic acid or salt thereof, and a reactant compound, wherein the inorganic acid or salt thereof is phosphovanadic acids or salts thereof, and combinations thereof, wherein the reactant compound is selected from one the following:
- camphor, phenyglycinol, cholesterol, and combinations thereof, wherein the radiation absorbing compound absorbs radiation and initiates a reduction/oxidation reaction between the inorganic acid or salts thereof and the reactant compound to produce a color change;
- dissolving the radiation absorbing compound, the inorganic acid or salt thereof, and the reactant compound, in the matrix to form a matrix mixture;
- and
- disposing the matrix mixture onto a substrate, wherein the layer does not include a color former selected from a leuco dye and a phthalide color former.
2 more elements
Dependencies are inferred from the claim text.