Direkt beschreibbare ein wärmeempfindliches Polymer enthaltende verarbeitungsfreie Druckplatte

Direktbeschreibbare entwicklungsfreie Flachdruckplatte, sowie Aufzeichnungs und Druckverfahren

Optische Aufzeichnungs-Elemente mit Aufzeichnungsschichten, die Mischungen von metallisierten Nok-Formazan-und Cyanin-Farbstoffen enthalten

Direktbeschreibbare entwicklungsfreie Flachdruckplatte, sowie Aufzeichnungs und Druckverfahren

THERMALLY RESPONSIVE COBALT (III) COMPLEX IMAGING COMPOSITIONS CONTAINING AN AMPLIFIER, AN IMAGE-FORMER AND FIRST AND SECOND DESTABILIZER COMPOUNDS

A dye-forming or imaging composition, element and method are disclosed, wherein a cobalt (III) complex containing releasable ligands is converted to cobalt (II) and the ligands by heating in the presence of a first destabilizer compound. The temperature at which the conversion reaction is initiated is unexpectedly lowered by the addition of a second, different destabilizer compound.

TRANSITION METAL PHOTOREDUCTION SYSTEMS AND PROCESSES

A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer.

PHOTORESIST COMPOSITIONS CONTAINING QUINONE SENSITIZER

PHOTORESIST COMPOSITIONS CONTAINING QUINONE SENSITIZER Positive-working imaging compositions comprise a polymeric binder and a quinone sensitizer which provides alkali solubility to the composition when exposed to activating radiation.

Wärmeempfindliches Bildaufzeichnungselement für die Herstellung lithographischer Druckplatten

Zusammensetzung für die thermische Bildaufzeichnung, Element, das einen sulfonierten IR-Farbstoff enthält sowie Verfahren zur Bildaufzeichnung und zum Drucken von Bildern

Beschrieben wird ein Bildaufzeichnungselement, z. B. in Form einer negativ arbeitenden Druckplatte oder eines Druckpressen-Zylinders, die bzw. der hergestellt werden kann mit einer hydrophilen Bildaufzeichnungsschicht aus einem wärmeempfindlichen hydrophilen Polymer mit ionischen Resten sowie einem für infrarote Strahlung empfindlichen Farbstoff mit einer Mehrzahl von Sulfogruppen. Das wärmeempfindliche Polymer und der IR-Farbstoff können unter Verwendung von Wasser oder mit Wasser mischbaren Lösungsmitteln zu hoch-wärmeempfindlichen Bildaufzeichnungs-Zusammensetzungen verarbeitet werden. In dem Bildaufzeichnungselement reagiert das Polymer unter Erzeugung einer erhöhten Hydrophobizität in Bereichen, die energiereicher Strahlung exponiert wurden, die Wärme liefert oder erzeugt. Beispielsweise kann Wärme durch Laser-Strahlen im IR-Bereich des elektromagnetischen Spektrums erzeugt werden. Das wärmeempfindliche Polymer wird als "veränderlich" aufgrund der Einwirkung von Wärme bezeichnet und ...

Imaging member containing heat switchable polymer and method of use

IMAGE FORMING MATERIAL, CONTAINING THERMALLY CONVERTIBLE COMPOSITION AS WELL AS CATIONIC IR DYSTUFF, AND METHOD OF IMAGE FORMING AS WELL AS PRINTING

PROBLEM TO BE SOLVED: To provide a heat sensitive image forming material, containing an IR dyestuff sensitizer, very effective for converting light into heat and capable of being applied through a solvent optimum to water or another environment. SOLUTION: The image forming material, such as a negative type printing plate, an on-press cylinder or the like, can be prepared by using a hydrophilic image forming layer, comprising a heat sensitive hydrophilic polymer having an ionic portion, and an infrared ray sensitive dyestuff, having a multitude of fourth class ammonium groups. The heat sensitive polymer and the IR dystuff can be changed into the image forming composite, high in heat sensitivity, by preparing them in water or a water compatible solvent. In such an image forming material, the polymer reacts whereby the hydrophobic property of an area, exposed to an energy which supplies or generates heat, is improved. For instance, heat can be supplied by the laser irradiation of an IR area ...

IMAGE FORMING MEMBER AND IMAGE FORMING METHOD

PROBLEM TO BE SOLVED: To provide a direct-writing lithographic printing plate on which an image can be formed without ablation and which does not require any treatment. SOLUTION: This image forming member consists of a supporting body on which a hydrophilic image forming layer containing the following two types of polymers is formed. They are vinyl polymers having positive changes and containing repeating units having pendant N-alkylated aromatic heterocyclic groups, and hydrophilic thermosensitive polymers selected form non-vinyl polymers containing repeating org. onium groups. COPYRIGHT: (C)2000,JPO ...

Thermal switchable composition and imaging member containing cationic IR dye and methods of imaging and printing

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and an infrared radiation sensitive dye having multiple quaternary ammonium groups. The heat-sensitive polymer and IR dye can be formulated in water or water-miscible solvents to provide highly thermal sensitive imaging compositions. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered "switchable" in response to heat, and provides a lithographic image without wet processing.

Direkt beschreibbare ein wärmeempfindliches Polymer enthaltende verarbeitungsfreie Druckplatte

Processless direct write printing plate having heat-sensitive crosslinked vinyl polymer with organoonium group and methods of imaging and printing

An imaging member, such as a negative-working printing plate, can be prepared using a hydrophilic heat-sensitive imaging layer comprised of a hydrophilic heat-sensitive, crosslinked vinyl polymer containing recurring organoonium groups. The imaging member can also include a photothermal conversion material such as carbon black or an infrared radiation absorbing dye. The heat-sensitive polymer has recurring units containing an organoammonium, organophosphonium or organosulfonium group that reacts to provide increased oleophilicity (ink receptivity) in response to heat. Heat is preferably generated by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered "switchable" in response to heat. The imaging member can be used in printing methods without the usual wet processing steps.

Wärmeempfindliches Bildaufzeichnungselement für die Herstellung lithographischer Druckplatten

Thicker optical recording layers comprising a tetra dye having a metallized azo dianionic dye with cationic dye counterions

The present invention discloses optical recording elements having optical recording layers containing tetra dyes. The dyes have metallized azo dianionic dye with cationic dye counterions. The recording layer has a thickness from 225 to 300 nm.

THERMAL IMAGE FORMING COMPOSITION

PROBLEM TO BE SOLVED: To provide a thermal image forming composition of improved image forming characteristics and printability. SOLUTION: A thermal image forming composition contains a) a hydrophilic heat-sensitive ionomer and b) water or an organic solvent of water miscibility, and also contains a coloring matter (IR coloring matter) soluble in the organic solvent of water miscibility and sensitive to infrared rays containing at least three sulfo groups. COPYRIGHT: (C)2001,JPO ...

Optische Aufzeichnungsträger mit Aufzeichnungsschichten enthaltend Mischungen aus metallisierten Fomazan-Farbstoff mit einem K-Wert von Null und Cyanin-Farbstoffen

IMAGE FORMING MATERIAL AND IMAGE FORMING METHOD

PROBLEM TO BE SOLVED: To form an image without ablation, obviate the need of its treatment, and obtain a direct writing lithographic printing plate by placing on a carrier a hydrophilic image forming layer having an organic onium group, and a hydrophilic heat sensitive cross-linking vinyl polymer containing a repeat unit. SOLUTION: A hydrophilic image forming layer containing a hydrophilic heat sensitive cross-linking vinyl polymer having a repeat organic onium group (e.g. an organic ammonium, organic phosphonium, or organic sulphonium group) and containing a hydrophilic heat-sensitive cross-linking vinyl polymer. The carrier is made of a self-consisting material including a polymer film, glass, a ceramic, a metal, or thin cardboard, or laminated one by these materials, and formed in about 100-310 μm thickness. A quantity of the heat-sensitive polymer is preferably 0.1-10 g/m2 (dry base). Also, a carrier improving the adhesion of the final laminated body can be coated by an undercoating ...

Processless direct write printing plate having heat sensitive positively-charged polymers and methods of imaging and printing

An imaging member, such as a negative-working printing plate, can be prepared using a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having a positively charged moiety, and optionally a photothermal conversion material. The heat-sensitive polymer has recurring units containing an N-alkylated aromatic heterocyclic group or an organoonium group that reacts to provide increased oleophilicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. Thus, the heat-sensitive polymer is considered "switchable" in response to heat, and provides an imaging means without wet processing.

Thermal imaging composition and member containing sulfonated IR dye and methods of imaging and printing

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and an infrared radiation sensitive dye having multiple sulfo groups. The heat-sensitive polymer and IR dye can be formulated in water or water-miscible solvents to provide highly thermal sensitive imaging compositions. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered "switchable" in response to heat, and provides a lithographic image without wet processing.

Processless direct write imaging member containing polymer grafted carbon and methods of imaging and printing

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and a polymer grafted carbon as a photothermal conversion material. The heat-sensitive polymer and polymer grafted carbon can be formulated in water or water-miscible solvents without agglomeration. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered "switchable" in response to heat, and provides a lithographic image without wet processing.

OPTICAL RECORDING ELEMENT

PROBLEM TO BE SOLVED: To provide an optical recording material which has the adaptability to CDs, forms the characteristics having a sufficient contrast by cooperation with irradiation with an incident laser and still has the necessary optical characteristics, such as optical stability and incubation stability. SOLUTION: The recording layer of the optical recording element having a transparent substrate and the recording layer and a light reflection layer on the surface of this substrate contains a mixture composed of metallized formazane dyestuff and cyanine dyestuff. The real number part (n) of the refractive index at 780nm of the unrecorded layer exceeds 1.8 and the virtual number part (k) is <1.5. The metallized formazane dyestuff described above has a (k) value of 0.00 to 0.02. COPYRIGHT: (C)1998,JPO ...

Imaging member containing heat switchable polymer and method of use

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared using a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer that comprises recurring units comprising quaternary ammonium carboxylate groups. The imaging member can also include an infrared radiation sensitive material to provide added sensitivity to heat that can be supplied by laser irradiation in the IR region. The heat-sensitive polymer is considered "switchable" in response to heat, and provides a lithographic image without wet processing.

OPTICAL RECORDING ELEMENT

PROBLEM TO BE SOLVED: To provide an optical recording material which has adaptability to CDs(compact disks), forms a characteristic having a sufficient contrast by cooperating with the irradiation with an incident laser, and nevertheless, has optical stability and incubation stability and has necessary optical characteristics. SOLUTION: This recording element is constituted by having a transparent base body and a recording layer and a light reflection layer on this base body. In such a case, (a) the real number part (n) of the refractive index at 780nm with the unrecorded layer of this recording element is ≥1.8 and the imaginary number part (k) thereof is ≤0.15, (b) the recording layer contains tetra dyestuff of ≥1 kinds of metallized diazo dyestuff and cation dyestuff and (c) the thickness of the recording layer is 225 to 300nm. COPYRIGHT: (C)1998,JPO ...

PIGMENT MIXTURE

PROBLEM TO BE SOLVED: To obtain an optical recording material having such optical characteristics that it has CD compatibility, forms properties having sufficient contrast as a result of bonding to incident laser beams, complies with the minimum reflection standard and has light stability by using a dye mixture containing a tetra dye having a cationic pigment counter ion and a metallized azodianion pigment and at least another pigment having a structure presented by formula I and having a specified refractive index. SOLUTION: This material is a mixture having a real part refractive index of 1.8 or higher to light at 780nm and an imaginary part refractive index of 0.15 or smaller and comprising a tetra pigment (a) having a cationic pigment counter ion and a metallized azodianion pigment and at least another pigment (b) represented by formula I (wherein A and A1, which may be the same or different from each other, are each a 6-10 C aryl; B and B', which may be the same or different from each ...

OPTICAL RECORDING ELEMENT

PURPOSE: To make a cost lower than the cost of phthalocyanine dyestuff without depending on thermal deformation by providing the element with a single dyestuff-contg. recording layer having a mixture composed of sensitizing dyestuff and leuco dyestuff dispersed at a molecular level. CONSTITUTION: The dyestuff of the recordable optical element having the dyestuff-contg. recording layer 12 and optical reflection layer 14 on the surface of a substrate 10 is the leuco dye which turns to absorbing dyestuff at the time of such activation as thermally induced reaction. Near IR reading laser absorbing dyestuff is generated by thermally converting the leuco dyestuff to IR absorbing dyestuff. The inside of the recording layer 12 is subjected to dyestuff marking by using a writing laser focused onto the recording layer 12 through the substrate 10, by which recording is executed. The second dyestuff is formed in the recording layer 12 according to the light absorbed by the sensitizing dyestuff. The ...

ELEMENT CAPABLE OF RECORDING

PURPOSE: To provide the photorecording element containing a dye and capable of recording. CONSTITUTION: This recording element comprises a recording layer 12 and light reflection layer 14 on the surface of a substrate 10, and the recording layer 12 contains a leuco dye to be made an absorbing dye by exposure to a heat generated acid, a sensitizing dye absorbing light and generating heat usable for actiating a Bronsted acid and a heat acid-generating agent for generating a strong acid usable for oxidizing the leuco dye. COPYRIGHT: (C)1994,JPO ...

Heterogeneous dye-binder photoconductive compositions

Heterogeneous compositions useful in electrophotography are formed from an electrically insulating polymeric material and pyrylium selenapyrylium or thiapyrylium dye salts having an inorganic anion the anionic radius of which is at least as large as the radius of hexafluorophosphate. The use of these dye salts results in extended stability of the coating dopes which stability facilitates coating procedures and results in more uniform coatings.

Photoconductive composition and element

Photographic elements and processes for incorporated hydrogen source photoreduction imaging

Tetra dye mixed with another dye or dyes for optical recording elements

A dye mixture having, at 780 nm, a real refractive index not less than 1.8, and an imaginary part not greater than 0.15 and comprising (a) a tetra dye having a metallized azo dianionic dye with a cationic dye counterion and (b) at least one other dye having the structure according to formula I: ##STR1## wherein: A may be equal to or different from A 1 , in which each represents an aryl group having 6 to 10 carbon atoms; B may be equal to or different from B 1 , in which each ##STR2## R and R 1 represent an alkyl group of C 1 -C 10 or an aryl group having 6 to 10 carbon atoms; and X represents halide, ClO 4 , BF 4 , PF 6 , tosylate and RCOO.

Recordable optical element having a leuco dye

There is disclosed a recordable optical element that includes a dye. The element has a substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The dye is a leuco dye which upon exposure to a thermally-generated acid becomes an absorption dye.

Butane system

Thermally responsive cobalt(III) complex imaging compositions having lowered activation temperatures

A dye-forming or imaging composition, element and method are disclosed, wherein a cobalt(III) complex containing releasable ligands is converted to cobalt(II) and the ligands by heating in the presence of a first destabilizer compound. The temperature at which the conversion reaction is initiated is unexpectedly lowered by the addition of a second, different destabilizer compound.

Tetrazolium alt photoreductive imaging

A tetrazolium salt capable of reduction to a formazan dye is present in a radiation-sensitive layer in combination with a photoreductant capable of producing, in the presence of labile hydrogen atoms, a reducing agent precursor in radiation-struck areas of the layer. An image is produced in the layer by bringing the layer into contact with a base after imagewise exposure to actinic radiation.

Optical recording elements having recording layers containing mixtures of no k metallized formazan and cyanine dyes

An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye and cyanine dye and the unrecorded layer is such that the real part of the refractive index(n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.00 to 0.02.

Transition metal photoreduction systems and processes

A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer. By the selection of amine-responsive reducing agent precursors, the amines released by the cobalt(III)complexes cause an amplified image.

Optical retrieval apparatus using a tellurium (IV) leuco dye

There is disclosed an optical retrieval apparatus which uses a laser for illuminating an optical element. A sensor responds to modulated light from the optical element to produce electrical signals. The optical element has a substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The improvement is that the dye is a leuco dye.

Heat-sensitive imaging element for providing lithographic printing plates

Liquefied gas dispensing system

Processless direct write imaging member containing polymer grafted carbon and methods of imaging and printing

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and a polymer grafted carbon as a photothermal conversion material. The heat-sensitive polymer and polymer grafted carbon can be formulated in water or water-miscible solvents without agglomeration. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered 'switchable' in response to heat, and provides a lithographic image without wet processing.

Processless direct write imaging member containing polymer grafted carbon and methods of imaging and printing

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and a polymer grafted carbon as a photothermal conversion material. The heat-sensitive polymer and polymer grafted carbon can be formulated in water or water-miscible solvents without agglomeration. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered 'switchable' in response to heat, and provides a lithographic image without wet processing.

Processless direct write imaging member containing polymer grafted carbon and methods of imaging and printing