Claims
- 1. A process for forming an imaged article comprising exposing an imageable article comprising a photosensitive composition coated on a substrate, said photosensitive composition comprising:
- (a) a photoinitiator which generates an acid upon exposure to radiation; and
- (b) a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula: ##STR5## wherein: R.sup.1 and R.sup.2 each represent hydrogen or a C.sub.1 to C.sub.18 alkyl group with the proviso that at least one of R.sup.1 and R.sup.2 must be hydrogen; R.sup.3 represents a C.sub.1 to C.sub.18 alkyl group; or any two of R.sup.1, R.sup.2, and R.sup.3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof, to radiation within a range absorbed by said photoinitiator to form a latent image bearing article, and applying ink to said latent image bearing article, thereby forming an imaged article.
- 2. A process for forming an imaged article comprising the steps of:
- (a) exposing an imageable article comprising a photoinitiator which generates an acid upon exposure to radiation; and a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula: ##STR6## wherein: R.sup.1 and R.sup.2 each represent hydrogen or a C.sub.1 to C.sub.18 alkyl group with the proviso that at least one of R.sup.1 and R.sup.2 must be hydrogen; R.sup.3 represents a C.sub.1 to C.sub.18 alkyl group; or any two of R.sup.1, R.sup.2, and R.sup.3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof, to radiation within a range absorbed by said photoinitiator to form a latent image bearing article, and applying ink to said latent image bearing article, thereby forming an imaged article, to radiation within a range absorbed by said photoinitiator thereby forming a first latent image bearing article;
- (b) contacting said first latent image bearing article with a hydrophilizing agent to form a second latent image bearing article; and
- (c) applying ink to said second latent image bearing article to form an imaged article.
- 3. An imaged article made according to the process of claim 2.
- 4. A process for forming an imaged article comprising: exposing an imageable article comprising a photoinitiator which generates an acid upon exposure to radiation; and a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula: ##STR7## wherein: R.sup.1 and R.sup.2 each represent hydrogen or a C.sub.1 to C.sub.18 alkyl group with the proviso that at least one of R.sup.1 and R.sup.2 must be hydrogen; R.sup.3 represents a C.sub.1 to C.sub.18 alkyl group; or any two of R.sup.1, R.sup.2, and R.sup.3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof, to radiation within a range absorbed by said photoinitiator to form a latent image bearing article, and applying ink to said latent image bearing article, thereby forming an imaged article, to radiation within a range absorbed by said photoinitiator to form a latent image bearing article, and contacting said latent image bearing article with a dye solution to form an imaged article.
- 5. An imaged article made according to the process of claim 4.
- 6. A process for forming an imaged article comprising the steps of:
- (a) exposing an imageable article comprising a photoinitiator which generates an acid upon exposure to radiation; and a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula; ##STR8## wherein: R.sup.1 and R.sup.2 each represent hydrogen or a C.sub.1 to C.sub.18 alkyl group with the proviso that at least one of R.sup.1 and R.sup.2 must be hydrogen; R.sup.3 represents a C.sub.1 to C.sub.18 alkyl group; or any two of R.sup.1, R.sup.2, and R.sup.3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof, to radiation within a range absorbed by said photoinitiator to form a latent image bearing article, and applying ink to said latent image bearing article, thereby forming an imaged article, to radiation within a range absorbed by said photoinitiator thereby forming a first latent image bearing article;
- (b) contacting said first latent image bearing article with a hydrophilizing agent to form a second latent image bearing article; and
- (c) contacting said second latent image bearing article with a dye solution to form an imaged article.
- 7. An imaged article made according to the process of claim 6.
- 8. A process for forming and fixing an imaged article comprising the steps of:
- (a) exposing an imageable article comprising a photoinitiator which generates an acid upon exposure to radiation; and a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula: ##STR9## wherein: R.sup.1 and R.sup.2 each represent hydrogen or a C.sub.1 to C.sub.18 alkyl group with the proviso that at least one of R.sup.1 and R.sup.2 must be hydrogen; R.sup.3 represents a C.sub.1 to C.sub.18 alkyl group; or any two of R.sup.1, R.sup.2, and R.sup.3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof, to radiation within a range absorbed by said photoinitiator to form a latent image bearing article, and applying ink to said latent image bearing article, thereby forming an imaged article, to radiation within a range absorbed by said photoinitiator to form a first latent image bearing article;
- (b) heating said first latent image bearing article to a temperature greater than about 100.degree. C. to form a second latent image bearing article;
- (c) cooling said heated latent image bearing article to below 40.degree. C. to form third latent image bearing article;
- (d) exposing said modified latent image bearing article to white light to form a fourth latent image bearing image article;
- (e) contacting a fourth latent image bearing article with hydrophilizing agent to form a fifth latent image bearing article; and
- (f) applying ink to said fifth latent image bearing article to form an imaged article.
- 9. An imaged article made according to the process of claim 8.
Parent Case Info
This is a continuation of application Ser. No. 07/817,528 filed Jan. 6, 1992, now U.S. Pat. No. 5,225,316.
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
672947 |
Sep 1962 |
CAX |
0451736A2 |
Jun 1991 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
817528 |
Jan 1992 |
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