Abstract:
PROBLEM TO BE SOLVED: To provide a technique for compensating a light leakage from a contiguous color channel which causes a hue shift in an image reconstructed by a display device. SOLUTION: The method includes a decision of a single channel emission spectrum which corresponds to each of a plurality of the color channels in the display device. The single channel emission spectrum is decided corresponding to each of the plurality of the color channels in the display device based on a measured emission spectrum and the light leakage spectrum which are corresponding to each color channel. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a convenient and economical method for preparing an infrared absorbing cyanine dye useful for a lithographic printing plate precursor. SOLUTION: A reaction for the preparation is generally carried out by condensation of a heterocyclic base containing an activated methylene group and an unsaturated bisaldehyde or its equivalent substance in a solvent or solvent mixture at about 20-150°C. All the reactions necessary for production of the infrared absorbing cyanine dye may be carried out in one reaction vessel without isolating any intermediate product. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide new improvement of a system, in which a coating has improved resistance to a specified organic solvent, while exhibiting good developability with respect to a heated region which dissolves in an aqueous developing solution and an unheated region which remains insoluble in the developing solution. SOLUTION: A film-forming composition, containing a carboxylic acid derivative of a cellulosic polymer and a compound which absorbs incident light in the wavelength range of 600-1,400 nm and converts it into heat is provided as a coating on a substrate. When the composition is heated and exposed to an aqueous developing solution for forming an image, the heated region dissolves in the developing solution and the unheated region having resistance to an organic solvent is left.
Abstract:
PROBLEM TO BE SOLVED: To provide a technology which compensates for a light leakage, from a contiguous color channel related to a wavelength dependence penetration which causes hue shift in an image offered by a display device. SOLUTION: The method includes determination of a light source spectrum, corresponding to each color channel of a plurality of the color channels in the display. The light source spectrum, corresponding to each color channel of the plurality of color channels in the display, is determined on the basis of the measured emission spectra of the color channels, inverted contrast ratio of the display, and an estimated transmission spectrum of a light valve in the display. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide positive working, multilayer, thermally imageable elements so that the elements produce bakeable lithographic printing plates that are resistant to printing chemistries. SOLUTION: The elements have a substrate, an underlayer, and a top layer. The underlayer comprises a resin or resins having activated methylol and/or activated alkylated methylol groups, such as a resole resin, and a polymeric material that comprises, in polymerized form, (a) methacrylic acid; (b) N-phenylmaleimide, N-cyclohexylmaleimide, N-benzylmaleimide, or a mixture thereof; and (c) one or more monomers of the structure of formula (1); in which: R 1 is H or methyl; X is -(CH 2 ) n -, where n is an integer of 2-12; -(CH 2 -CH 2 -O) p -CH 2 -CH 2 , where p is an integer of 1-3; or -Si(R')(R")-, where R' and R" are each independently methyl or ethyl; and m is 1, 2 or 3. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
A process for making thermally imageable negative working compositions comprising the steps of: (1) providing a patterning composition layer on a substrate, said patterning composition comprising: (a) at least one acid generator which is sensitive to UV radiation; (b) at least one cross-linking resin or compound; (c) at least one binder resin comprising a polymer containing at least one reactive pendent group consisting of hydroxyl, carboxylic acid, sulfonamide, alkoxymethylamide and mixtures thereof; and (d) at least one infrared absorber; (2) subjecting the patterning composition layer to a two-stage radiation exposure; (a) one stage being a flood UV-exposure; and (b) the other stage being a imagewise infrared exposure stage; (3) treating the exposed patterning composition with heat energy; and (4) developing the heat treated, exposed patterning composition with an aqueous alkaline developer to remove the non-imaged areas of the patterning composition and leaving the imaged areas substantially unaffected.
Abstract:
A method of producing a printing plate comprises: (a) providing a printing plate precursor comprising a topmost etchable first layer and a second layer located below the first layer, wherein the first and second layers have different affinities for at least one printing liquid; (b) imagewise providing atomized fluid particles in an interaction zone located above the surface of the first layer; and (c) imagewise directing laser energy into the interaction zone, wherein the laser energy has a wavelength which is substantially absorbed by the atomized fluid particles in the interaction zone, and the absorption of the laser energy causes the atomized fluid particles to imagewise impart kinetic energy to and etch the first layer. Lithographic and flexographic printing plates may be prepared according to this method, including waterless plates, negative-and positive-working plates, and processless plates.
Abstract:
The present invention includes an imageable element, which can be: (a) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; a polyvinyl acetal binder; and a sheet substrate; or (b) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; and a sheet substrate. The imaging layer includes a total aromatic diazonium salt containing compound content of at least 10 weight percent. The molar ratio of the aromatic diazonium salt containing compound having an alkoxy substituent to the aromatic diazonium salt containing compound that is free of an alkoxy substituent is from about 1.0:1 to 70:1. Upon imagewise exposure and development, an imaged element is obtained.
Abstract:
A method for manufacturing a microporous film comprising the steps of: (a) providing a first polymer which is a hydrophobic thermoplastic polymer and a second polymer which is a hydrophilic polymer or copolymer of N-vinylpyrrolidone; (b) dissolving said first and second polymers in a solvent system which is compatible with both polymers, said solvent system comprising a blend of an aprotic organic solvent and an alcohol; (c) coating the resulting solution on a support; (d) effecting at least a partial drying of the resulting coating; and (e) washing the coating in an aqueous medium so as to extract at least 50% by weight of the said second polymer. Image accepting members comprising a microporous film made by the above method, and preferably comprising a support which is also microporous.
Abstract:
A polyvinyl acetal copolymer compound comprises the units A, B, C and D, wherein A is present in an amount of 0.5 to 30 wt.-% and is of the formula 1 wherein R is hydrogen, C1-C6 alkyl, nullCHnullCHCOOH or 2 B is present in an amount of 5 to 35 wt.-% and is of the formula 3 C is present in an amount of 10 to 55 wt.-% and is of the formula 4 wherein R1 is an alkyl group with up to 4 carbons, which is optionally substituted by an acid group, or a phenyl group to which an acid group is attached, wherein the phenyl group optionally comprises 1 to 2 further substituents selected from halogen atoms, amino, methoxy, ethoxy, methyl and ethyl groups, or is a group ZnullNR2nullCOnullYnullCOOH, wherein Z is an aliphatic, aromatic or araliphatic spacer group, R2 is hydrogen or an aliphatic, aromatic or araliphatic moiety and Y is a saturated or unsaturated chain- or ring-shaped spacer group, and unit C may have one or more occurrences in the copolymer with various moieties R1 independent of one another; and D is present in an amount of 10 to 40 wt.-% and is of the formula 5 wherein X is C1-C6 alkylene, a 5 or 6 membered saturated carbocyclic moiety optionally substituted with one or more substituents selected from the group consisting of C1-C4 alkyl, C1-C4 alkoxy or halogen, a 5 or 6 membered saturated heterocyclic moiety which comprises in the nucleus one or more heteroatoms selected from oxygen, nitrogen and sulfur, or a group of the formula I 6 wherein n is an integer from 0 to 4 and each R3 is independently selected from the group consisting of C1-C4 alkyl, halogen or C1-C4 alkoxy. A radiation-sensitive composition useful in a lithographic printing plate comprises (i) the above-described polyvinyl acetal copolymer; and (ii) a light-to-heat transformer compound.