Radiation-markable coatings for printing and imaging
First Claim
Patent Images
1. A light activated image recording medium, comprising:
- a substrate, optionally, a color layer; and
a layer comprising a light-scattering pigment that becomes at least translucent when heated to a predetermined temperature, wherein at least one of said substrate, color layer, if present, and said layer comprising said light-scattering pigment includes an antenna having a peak absorbance wavelength or wavelength range matching a predetermined near infrared wavelength or wavelength range, such that said antenna causes localized heating of said medium when said antenna absorbs radiation in said predetermined near infrared wavelength or wavelength range.
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Abstract
An light activated image recording medium, comprises a substrate, optionally, a color layer; and a layer of light-scattering pigment that becomes at least translucent when heated to a predetermined temperature.
106 Citations
31 Claims
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1. A light activated image recording medium, comprising:
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a substrate, optionally, a color layer; and
a layer comprising a light-scattering pigment that becomes at least translucent when heated to a predetermined temperature, wherein at least one of said substrate, color layer, if present, and said layer comprising said light-scattering pigment includes an antenna having a peak absorbance wavelength or wavelength range matching a predetermined near infrared wavelength or wavelength range, such that said antenna causes localized heating of said medium when said antenna absorbs radiation in said predetermined near infrared wavelength or wavelength range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 29, 30, 31)
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8. A means for providing human-readable marks on a light activated image recording medium, comprising:
a means for recording human-readable marks on said medium, said means including a masking layer that produces a human-detectable optical change in response to a triggering near infrared signal above a threshold power level, wherein said masking layer includes an antenna having a peak absorbance wavelength or wavelength range corresponding to a predetermined near infrared wavelength or wavelength range, and light-scattering particles that cease to mask when exposed to said predetermined triggering near infrared signal. - View Dependent Claims (9, 10, 11, 12)
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13. A system, comprising:
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a processor, a laser coupled to said processor, and capable of emitting a predetermined near infrared wavelength or wavelength range;
a data storage medium including a substrate having a surface that can be marked with human-readable marks by said laser, said surface including an imaging composition thereon, said imaging composition comprising;
a layer comprising light-scattering pigment that becomes at least translucent when heated to a predetermined temperature; and
optionally, a color layer between said substrate surface and said layer comprising said light-scattering pigment, wherein at least one of said substrate, color layer, if present, and said layer comprising said light-scattering pigment includes an antenna having a peak absorbance wavelength or wavelength range corresponding to a predetermined near infrared wavelength or wavelength range, such that said antenna causes localized heating of said medium when said antenna absorbs radiation in said predetermined near infrared wavelength or wavelength range emitted by said laser. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method for creating a light activated image recording medium on a substrate, comprising:
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a) combining a light-scattering pigment in a carrier fluid to form a coating mixture;
by;
b) applying the coating mixture to part of the surface of a substrate;
c) allowing the carrier fluid to evaporate, leaving a layer of pigment on said part of said surface, to provide a light activated image recording medium on said substrate that is capable of forming human readable marks in response to incident light having a predetermined near infrared wavelength or wavelength range, wherein at least one of said substrate and said layer comprising said pigment includes an antenna having a peak absorbance wavelength or wavelength range corresponding to said predetermined near infrared wavelength or wavelength range, such that said antenna causes localized heating of said medium when said antenna absorbs radiation in said predetermined near infrared wavelength or wavelength range. - View Dependent Claims (23, 24, 25, 26)
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22. (canceled)
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27-28. -28. (canceled)
Specification