Photosensitive materials

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.

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.

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.

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.