Imaging element having a photoluminescent tag and process of using the imaging element to form a recording element
AssigneeE.I. du Pont de Nemours and Company
InventorADRIAN LUNGU
Life of this patent
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Abstract
The invention relates to an imaging element and a method of using the imaging element to form a recording element. The imaging element includes a composition sensitive to actinic radiation from a source of radiation having a range of wavelengths and a photoluminescent tag that is responsive to at least one wavelength from the source of radiation. The photoluminescent tag can be used to authenticate the identity of the element, provide information about the element, and/or to establish one or more conditions in a device used to prepare the recording element from the imaging element.
Claims35
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A method for making a recording element comprising:
- a) providing a precursor printing form comprising a layer of photopolymerizable composition sensitive to actinic radiation from a source of radiation having a range of wavelengths greater than 10 nm, wherein the photopolymerizable layer has a thickness of 0.010 to 0.250 inch, and wherein a photoluminescent tag excluding optical brighteners is disposed in the precursor printing form and is responsive to at least one wavelength from the source of radiation to generate emitted radiation at a wavelength that is different from the actinic radiation, the composition being sensitive to the at least one wavelength;
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- b) exposing the precursor printing form to the actinic radiation.
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A method for setting conditions in a device used for making a recording element comprising:
- a) providing a precursor printing form comprising a layer of a photopolymerizable composition sensitive to actinic radiation from a source of radiation having a range of wavelengths greater than 10 nm, wherein the photopolymerizable layer has a thickness range of 0.010 to 0.250 inch, and wherein a photoluminescent tag excluding optical brighteners is disposed in the precursor printing form and is responsive to at least one wavelength from the source of radiation, the composition being sensitive to the at least one wavelength;
- b) exposing the precursor printing form to the at least one wavelength to generate an emitted radiation from the tag at a wavelength that is different from the actinic radiation;
- c) detecting the emitted radiation;
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- d) setting one or more conditions for operation of the device according to the detected emission from step c).
Dependencies are inferred from the claim text.