Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Imagewise heating – element or image receiving layers...
Patent
1996-11-26
1998-06-16
Young, Christopher G.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Imagewise heating, element or image receiving layers...
430200, 430253, 4302751, 4302761, 4302781, 430945, 430964, G03C 554, G03C 194
Patent
active
057668191
ABSTRACT:
Donor elements, assemblages, and associated processes are described for use in a laser-induced thermal transfer process, said elements comprising in the order listed (a) at least one flexible ejection layer comprising a first polymer having a decomposition temperature T.sub.1 and characteristic glass transition temperatures of T.sub.g.sup.0 and T.sub.g.sup.1 for unplasticized and plasticized polymer samples, respectively, wherein the tensile modulus of the flexible ejection layer(s) structure is less than or equal to 2.5 Gigapascals; (b) at least one heating layer; (c) at least one transfer layer comprising (i) a second polymer having a decomposition temperature T.sub.2, wherein T.sub.2 .gtoreq.(T.sub.1 +100.degree. C.) and (ii) an imageable component, with the proviso in some embodiments that an inflexible support substrate is absent in the donor element at least during the thermal transfer process or in other embodiments that a support is absent in the donor element at least during the thermal transfer process. These donor elements are useful in proofing and lithographic printing applications. Assemblages made with these donor elements are useful for fabrication of photomasks on various photohardenable materials, including flexographic printing plates and photoresists. These photomasks are useful in creating a relief image with a photosensitive element, such as flexographic printing plate or a photoresist.
REFERENCES:
patent: 4105569 (1978-08-01), Crossfield
patent: 4347300 (1982-08-01), Shimazu et al.
patent: 4476267 (1984-10-01), Barda et al.
patent: 4588674 (1986-05-01), Stewart et al.
patent: 4963606 (1990-10-01), Schleifstein
patent: 4985503 (1991-01-01), Bronstert et al.
patent: 4990580 (1991-02-01), Ishihara et al.
patent: 5156938 (1992-10-01), Foley et al.
patent: 5162445 (1992-11-01), Powers et al.
patent: 5171650 (1992-12-01), Ellis et al.
patent: 5212232 (1993-05-01), Kuramoto et al.
patent: 5238990 (1993-08-01), Yu et al.
patent: 5256506 (1993-10-01), Ellis et al.
patent: 5262275 (1993-11-01), Fan
patent: 5308737 (1994-05-01), Bills et al.
patent: 5378385 (1995-01-01), Thomas et al.
patent: 5506086 (1996-04-01), Van Zoeren
patent: 5523192 (1996-06-01), Blanchet-Fincher
patent: 5563019 (1996-10-01), Blanchet-Fincher
patent: 5607814 (1997-03-01), Fan et al.
patent: 5633113 (1997-05-01), Ellis
E. I. DuPont de Nemours and Company
Young Christopher G.
LandOfFree
Donor elements, assemblages, and associated processes with flexi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Donor elements, assemblages, and associated processes with flexi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Donor elements, assemblages, and associated processes with flexi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1723649