Abstract: Negative-working imageable element can be used to prepared lithographic printing plates. These elements include a water-soluble contrast dye having a ?max in the range of from about 450 to about 750 nm and having an absorption that is lower than 10% with respect to the absorption of the radiation absorbing compound in the element at the wavelength used for exposure. The contrast dye is present in sufficient H-aggregation such that less than 40% of the entire absorption spectrum from the contrast dye is contributed by it in non-H-aggregated form.
Type:
Grant
Filed:
February 13, 2009
Date of Patent:
October 11, 2011
Assignee:
Eastman Kodak Company
Inventors:
Bernd Strehmel, Harald Baumann, Daniela Lummel
Abstract: A process of making an organic thin film on a substrate by atomic layer deposition is disclosed, the process comprising simultaneously directing a series of gas flows along substantially parallel elongated channels, and wherein the series of gas flows comprises, in order, at least a first reactive gaseous material, an inert purge gas, and a second reactive gaseous material, optionally repeated a plurality of times, wherein the first reactive gaseous material is capable of reacting with a substrate surface treated with the second reactive gaseous material wherein the first reactive gaseous material, the second reactive gaseous material or both is a volatile organic compound. The process is carried out substantially at or above atmospheric pressure and at a temperature under 250° C., during deposition of the organic thin film.
Type:
Grant
Filed:
September 26, 2007
Date of Patent:
December 28, 2010
Assignee:
Eastman Kodak Company
Inventors:
Diane C. Freeman, David H. Levy, Peter J. Cowdery-Corvan
Abstract: Radiation-sensitive compositions can be used to prepare imageable elements useful for example to make lithographic printing plates. The compositions include an aqueous alkaline solvent soluble phenolic resin or poly(vinyl acetal) as a polymeric binder. The compositions also include a fluorinated compound that has a urethane moiety and a fluorinated alkyleneoxy moiety to provide improved coating and friction properties particularly when stacked with interleaf papers. The radiation-sensitive composition can be coated as an imageable layer that further includes a radiation absorbing compound that is sensitive, for example, to infrared radiation.
Abstract: Non-photosensitive direct thermographic materials comprise a reducing agent that is a specific ortho-amino-phenol, para-amino-phenol, or hydroquinone compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing. The materials are characterized by their calculated aqueous deprotonation and their calculated anion HOMO energies.
Type:
Grant
Filed:
December 15, 2004
Date of Patent:
November 14, 2006
Assignee:
Eastman Kodak Company
Inventors:
David R. Whitcomb, Leif P. Olson, Peter J. Cowdery-Corvan, Kumars Sakizadeh, Takuzo Ishida