Multicolor imaging using multiphoton photochemical processes
Assignee3M Innovative Properties Company
InventorsRobert J. DeVoe, Robert D. DeMaster, Brook F. Duerr, Jonathan P. Kitchin, Dennis E. Vogel
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Abstract
A multilayer imageable article with at least two layers including a multiphoton imageable composition. The composition includes a multiphoton-sensitive photoactive system and at least one of a dye and a dye precursor. The photoactive system includes a multiphoton sensitizer capable of simultaneously absorbing at least two photons, an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons, and optionally an electron donor.
Claims29
A multilayer imageable article, wherein the article comprises at least two layers comprising a multiphoton imageable composition, wherein the composition comprises
- at least one of a dye and a dye precursor;
- and
- a multiphoton-sensitive photoactive system, wherein the photoactive system comprises:
- a multiphoton sensitizer capable of simultaneously absorbing at least two photons;
- an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons;
- and
- optionally, an electron donor.
A article for making a multicolor image, comprising:
- (a) providing a multilayer imageable article, wherein at least two layers of the article comprise:
- at least one of a dye and a dye precursor;
- and
- a multiphoton sensitive photoactive system, wherein the photoactive system comprises a multiphoton sensitizer capable of simultaneously absorbing at least two photons;
- an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons;
- and optionally, an electron donor;
- and
- (b) imaging at least one layer to activate the photoactive system and form a multicolor image.
A multiphoton imageable composition, wherein the composition comprises at least one multiphoton sensitizer capable of simultaneously absorbing at least two photons;
- an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons;
- at least one of a dye and a dye-precursor;
- and, optionally, an electron donor.
A multiphoton imaging system, comprising:
- (a) an exposure system comprising at least one light source and at least one optical element,
- (b) a multilayer imageable article with at least two layers comprising a multiphoton imageable composition, wherein the imageable composition comprises at least one of a dye and a dye precursor;
- and a multiphoton-sensitive photoactive system, the photoactive system comprising
- a multiphoton sensitizer capable of simultaneously absorbing at least two photons;
- an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons;
- and
- optionally, an electron donor.
A method for making a multicolor proof, comprising:
- (a) providing a multilayer imageable article, wherein the article comprises at least two layers comprising a multiphoton imageable composition, wherein the imageable composition comprises at least one of a dye and a dye precursor and a multiphoton-sensitive photoactive system, the photoactive system comprising
- a multiphoton sensitizer capable of simultaneously absorbing at least two photons;
- an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons;
- and
- optionally, an electron donor, and
- (b) radiation imaging, with a multiphoton process, at least one layer to activate the photoactive system and form a bleached or dye image.
Dependencies are inferred from the claim text.