Color forming compositions and associated methods
AssigneeHewlett-Packard Development Company, L.P.
InventorMakarand P. Gore
Life of this patent
Estimating the term…
Abstract
Compositions and methods for production of color images which are developable at desired wavelengths are disclosed and described. The color forming composition can include a color former which is a spiro dye. The color forming composition can include a radiation antenna admixed with or in thermal contact with the color former. The color forming composition can also be optimized for development using electromagnetic radiation having a selected development wavelength. The color forming compositions are useful in forming images on a wide variety of substrates such as optical disks.
Claims23
A color forming composition, comprising:
- a) a color former dispersed within a polymer matrix comprising a UV curable polymer, said color former being a spiro dye;
- b) a radiation antenna admixed with the color former;
- and
- c) a stabilizer capable of stabilization of the color former in a developed state, said color forming composition being coated on an optical disk.
A color forming composition, comprising:
- a) a color former, said color former being a spiro dye;
- and
- b) a radiation antenna admixed with the color former,
- wherein the color former and radiation antenna are present in an amount such that the color forming composition is optimized for development in less than about 1 millisecond using radiation at from about 0.3 J/cm2 to less than 3.0 J/cm2, and wherein the color forming composition is spin-coatable.
A color forming composition, comprising:
- a) a color former, said color former being 6,8-dibromo-1′3-dhydro-1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-(2H)-indole;
- b) a radiation antenna admixed with the color former;
- and
- c) a stabilizer capable of stabilization of the color former in a developed state,
- said color forming composition being coated on an optical disk.
A color forming composition, comprising:
- a) a color former, said color former being 6,8-dibromo-1′3-dhydro-1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-(2H)-indole;
- and
- b) a radiation antenna admixed with the color former,
- wherein the color former and radiation antenna are present in an amount such that the color forming composition is optimized for development in less than about 1 millisecond using radiation at from about 0.3 J/cm2 to less than 3.0 J/cm2.
Dependencies are inferred from the claim text.