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US 2014/0080057 A1Published application
Composition, process of preparation and method of application and exposure for light imaging paper
AssigneeInternational Paper Comapny
InventorsRICHARD C. WILLIAMS, RICHARD D. FABER, OLEG GRINEVICH, JOHN MALPERT, ALEXANDRE MEJIRITSKI, DOUGLAS C. NECKERS
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Abstract
The present invention provides dual energy imaging compositions, processes for forming dual energy imaging compositions, methods for forming images using dual energy imaging compositions and substrate (e.g., paper web) treated (e.g., coated) on one or both sides with a dual energy imaging composition. Also provided is a particulate comprising a matrix of polymer material and containing one or more image-forming agents and a photo-oxidizing agent useful in making dual energy imaging compositions.
Claims53
An article comprising:
- a particulate comprising a matrix of polymer material and containing:
- one or more image-forming agents;
- and a photo-oxidizing agent, wherein the particulate allows the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material, and wherein the diffused photo-oxidizing agent is activated by light having a wavelength of about 200 to 450 nm to thereby cause the one or more image-forming agents to form one or more images.
An imaging composition comprising:
- a solvent;
- and
- a plurality of particulates dispersed in the solvent, wherein each particulate comprises a matrix of polymer material and contains:
- one or more image-forming agents;
- and
- a photo-oxidizing agent;
- wherein the particulate allows the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material;
- wherein the photo-oxidizing agent is activated by light having a wavelength of about 200 to 450 nm to thereby cause the one or more image-forming agents to form one or more images when the photo-oxidizing agent is diffused.
5 more elements
An article comprising:
- a substrate having first and second surfaces;
- and
- a plurality of image-forming particulates applied on at least one of the first and second surfaces, each particulate comprising a matrix of polymer material and containing:
- one or more image-forming agents;
- and
- a photo-oxidizing agent;
- wherein each particulate allows the photo-oxidizing agent to diffuse within the particulates towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material;
- wherein the photo-oxidizing agent is activated by light having a wavelength in the range of from about 200 to about 450 nm to thereby allow the one or more image-forming agents to form one or more images in or on the substrate when the one or more image-forming agents are exposed to the light that activates the photo-oxidizing agent when diffused.
5 more elements
A method of forming one or more images comprising the following steps:
- (a) providing an article comprising:
- a substrate having first and second surfaces;
- and
- a plurality of image-forming particulates applied to at least one of the first and second surfaces, each particulate comprising a matrix of polymer material and containing:
- one or more image-forming agents;
- and
- a photo-oxidizing agent;
- wherein each particulate allows the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material;
- (b) exposing one or more of the particulates to a temperature greater than the Tg of the polymer material to allow the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents;
- and
- (c) exposing one or more of the particulates to light having a wavelength in the range of from about 200 to about 450 nm while the particulates are at a temperature greater than the Tg of the polymer material, to thereby activate the diffused photo-oxidizing agent and to thereby cause the one or more image-forming agents of each of the one or more particulates to form one or more images in or on the substrate.
8 more elements
The method of claim 30, wherein step (b) comprises exposing the one or more particulates to a temperature of from about 35° to about 200° F.
A process of making a treated article comprising the following steps:
- (a) providing a substrate having first and second surfaces;
- and
- (b) treating at least one of the first and second surfaces with a dual energy imaging composition, wherein the imaging composition comprises:
- a solvent;
- and
- a plurality of particulates dispersed in the solvent, wherein each particulate comprises a matrix of polymer material and contains:
- one or more image-forming agents;
- and
- a photo-oxidizing agent, wherein the particulate allows the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material;
- wherein the photo-oxidizing agent is activated at a wavelength of about 200 to 450 nm to thereby cause the one or more image-forming agents to form one or more images in or on the substrate when the photo-oxidizing agent is diffused.
7 more elements
A process of making a dual energy imaging composition comprising the following steps:
- (a) providing a solvent;
- and
- (b) dispersing a plurality of particulates in the solvent to form an imaging composition, wherein each particulate of the plurality of particulates comprises a matrix of polymer material and contains:
- one or more image-forming agents;
- and
- a photo-oxidizing agent;
- wherein each particulate allows the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material;
- wherein the photo-oxidizing agent is activated by light having a wavelength in the range of from about 200 to about 450 nm to thereby cause the one or more image-forming agents to form one or more images when the photo-oxidizing agent is diffused;
- wherein at least some of the particulates is about 10 microns or less in diameter.
6 more elements
A process of making a dual energy imaging composition comprising the following steps:
- (a) providing a solvent;
- (b) dispersing a plurality of particulates in the solvent to form a wet slurry, wherein each particulate of the plurality of particulates comprises a matrix of polymer material and contains:
- one or more image-forming agents;
- and
- a photo-oxidizing agent;
- wherein the particulate allows the photo-oxidizing agent to diffuse within the particulate towards the one or more image-forming agents when the particulate is exposed to a temperature greater than the Tg of the polymer material;
- wherein the photo-oxidizing agent is activated by light having a wavelength in the range of from about 200 to about 450 nm to thereby cause the one or more image-forming agents to form one or more images when the photo-oxidizing agent is diffused;
- and
- (c) grinding the wet slurry until at least some of the particulates are about 10 microns or less in diameter to thereby form the imaging composition.
6 more elements
Dependencies are inferred from the claim text.