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6576395 |
Processless printing plate with high ratio of inorganic pigment over hardener in a hydrophilic layer
According to the present invention there is provided a heat-sensitive material for making lithographic plates comprising in the order given on a support an IR-sensitive oleophilic layer and an...
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6576401 |
On-press developable thermosensitive lithographic plates utilizing an onium or borate salt initiator
This patent describes an on-press developable thermosensitive lithographic plate having on a substrate a thermosensitive layer comprising an ethylenically unsaturated monomer, an infrared absorbing...
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6569594 |
Heat mode sensitive imaging element for making positive working printing plates
According to the present invention there is provided a heat mode imaging element for providing a lithographic printing plate consisting of a lithographic base with a hydrophilic surface and a top...
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6566029 |
Lithographic printing plate precursor
A lithographic printing plate precursor comprising a support having a hydrophilic surface containing hydrophilic graft polymer chains and a heat-sensitive layer containing at least either of fine...
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6566035 |
Negative-type image recording material and precursor for negative-type lithographic printing plate
A negative-type recording material recordable by the irradiation of an infrared ray is provided. The recording material includes (A) an infrared absorbent, (B) an onium salt, (C) a radical...
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6562555 |
Method for developing lithographic printing plate precursors using a coating attack-suppressing agent
A method for developing exposed lithographic printing plate precursors using a developer and replenisher is disclosed. The replenisher contains a higher concentration of a coating...
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6558869 |
Pattern formation
This invention is directed to a precursor for preparing a resist pattern by heat mode imaging, the precursor comprising a heat sensitive composition, the solubility of which in an aqueous alkaline...
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6555285 |
Processless printing plate with low ratio of an inorganic pigment over hardener
According to the present invention there is provided a heat-sensitive material for making lithographic plates comprising in the order given on a support an IR-sensitive oleophilic layer and a...
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6555291 |
Thermal digital lithographic printing plate
Thermally imageable elements useful as lithographic printing plates, and methods for forming an image using the thermally imageable elements are disclosed. The element contains a support with a...
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6551757 |
Negative-working thermal imaging member and methods of imaging and printing
A negative-working imaging member can be used as a lithographic printing plate without ablation. The imaging member comprises a support and an imaging layer that includes a dispersion of at least...
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6551762 |
Process for manufacturing a flexographic printing plate
A layer of a blank is subjected to a laser-engraving phase to manufacture a flexographic printing plate. The layer is produced in a material comprised of between 55 and 65% by weight of ethylene...
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6548215 |
Method for the production of a printing plate using the dual-feed technology
A method for producing printing plate precursors by dual-feed technology is described. The obtained printing plate precursors contain polymer particles in the photosensitive layer and show high...
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6544720 |
Photosensitive composition, image-forming material and image-forming method employing it
A photosensitive composition comprising (a) an ethylenically unsaturated double bond-containing compound, (b) a sensitizing dye and (c) a photopolymerization initiator, wherein the sensitizing dye...
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6544719 |
Method of making a heat-mode lithographic printing plate precursor
A cost efficient method of making a lithographic printing plate precursor is disclosed, the method comprising the steps of coating a silver halide emulsion layer on a hydrophilic base which is...
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6541183 |
Negative lithographic printing plates having a semisolid radiation-sensitive layer
This patent describes a lithographic printing plate comprising on a substrate a semisolid radiation-sensitive layer capable of hardening upon exposure to a suitable radiation, and a method of...
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6537725 |
Planographic printing plate
A planographic printing plate formed of a support having sequentially disposed thereon a first layer, that is structured by a heat-insulating material having a low thermal conductivity, and that is...
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6537730 |
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...
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6534234 |
Package of photosensitive planographic printing plates and photosensitive planographic printing plate
A package of photosensitive planographic printing plates which comprises a stack of the photosensitive planographic printing plates between each of which a protection paper is interposed, wherein...
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6534240 |
Method of producing lithographic printing plate, lithographic printing plate precursor and method of forming images
A method of producing a lithographic printing plate comprising a step of providing on a support a layer has a hydrophobic surface and comprises an oxidizable material and a reducible material, a...
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6534238 |
Thermal digital lithographic printing plate
A thermally imageable element, useful as a lithographic printing plate precursor is disclosed. The element comprises a hydrophilic substrate; an underlayer comprising a first polymeric material;...
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6534241 |
Method of actinically imaging a semiconductor
A coated imageable semiconductor is imaged by heating an area of the coating with an infrared laser and reacting the coating in the heated area with ultraviolet or visible radiation. The coating...
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6528237 |
Heat sensitive non-ablatable wasteless imaging element for providing a lithographic printing plate with a difference in dye density between the image and non image areas
According to the present invention there is provided a heat-sensitive non-ablatable wasteless imaging element for providing a lithographic printing plate, comprising on a support a top layer which...
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6528228 |
Chemical resistant underlayer for positive-working printing plates
Multilayer photoimageable elements, useful for forming lithographic printing members, are disclosed. The elements comprise a support, a top layer, and a chemical resistant underlayer. The...
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6516722 |
Lithographic printing machine and lithographic printing method
Provided is a lithographic printing machine comprising a plate cylinder for imaging, a blanket cylinder, an impression cylinder, and a film-coating unit, a film-hardening unit, an imaging unit and...
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6517977 |
Lithographic template and method of formation and use
This invention relates to semiconductor devices, microelectronic devices, micro electro mechanical devices, microfluidic devices, and more particularly to a lithographic template, a method of...
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6517987 |
Positive-working presensitized plate useful for preparing a lithographic printing plate
The present invention relates to a positiive-working presensitized plate useful for preparing a lithographic printing plate comprising a positive-working photosensitive composition comprising at...
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6517988 |
Radiation-sensitive, positive working coating composition based on carboxylic copolymers
A radiation-sensitive composition, positive-working coating compositions useful for the preparation of lithographic printing plates and lithographic printing plate precursors comprising the...
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6513433 |
Lithographic printing plate precursor
A lithographic printing plate precursor comprising a hydrophilic support having thereon a heat-sensitive layer containing at least one of a thermoplastic particulate polymer having Tg of not lower...
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6511782 |
Heat sensitive element and a method for producing lithographic plates therewith
According to the present invention there is provided a heat sensitive imaging element comprising on a lithographic base with a hydrophilic surface an image forming layer including thermoplastic...
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6509133 |
Lithographic printing plate and image forming method
In order to provide a computer-to-plate (CTP) plate in which an image can be inscribed by a laser beam having Ithe maximum strength in a near infrared or infrared region, and heat processing is not...
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6506533 |
Polymers and their use in imagable products and image-forming methods
Infra-red absorbing polymers useful in imageable products and the lithographic printing field comprise infra-red absorbing groups carried as pendent groups on a polymer backbone. Certain infra-red...
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6503685 |
Heat sensitive composition, original plate using the same for lithographic printing plate, and process for preparing printing plate
A heat-sensitive composition is disclosed which includes a substance which absorbs light and generates heat, an anionic self water-dispersible resin particle having an acid value of 10 to 300 and...
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6503691 |
Polymer system with switchable physical properties and its use in direct exposure printing plates
Polymer materials are described that undergo a 2-level 3 dimensional crosslinking process. During this process, hydrophilic polymers are crosslinked at two levels, the first results in a low level...
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6500599 |
Lithographic printing plate precursor and plate-making method of lithographic printing plate using the same
Disclosed are a lithographic printing plate precursor that can record images by laser beam scanning exposure based on digital signals and can be printed by easy development processing or...
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6500601 |
Method of manufacturing photopolymer plates
A method of manufacturing photopolymer marking structures is disclosed. The improved method results in a substantially tack-free marking structure.
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6497990 |
Heat sensitive printing plate precursors
The present invention provides a method of preparing a lithographic printing plate, said method comprising: providing a lithographic printing plate precursor comprising: i) a grained and anodized...
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6497989 |
Method of manufacturing a planographic printing plate
A planographic printing plate and a manufacturing method thereof are provided in which a deterioration in quality and performance of the planographic printing plate due to coating defects caused by...
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6495310 |
Lithographic plate having conformal overcoat and photosensitive layer on a rough substrate
The present invention provides a lithographic printing plate comprising on a roughened substrate a substantially conformal photosensitive layer and a substantially conformal overcoat. The...
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6492093 |
Radiation-sensitive mixtures comprising IR-absorbing cyanine dyes having a betaine structure or having a betaine structure and containing an anion, and recording materials prepared therewith
The invention relates to a positive-working, radiation-sensitive mixture which contains an organic polymeric binder which is insoluble in water but soluble or at least swellable in aqueous alkaline...
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6489078 |
IR radiation-sensitive imaging element and a method for producing lithographic plates therewith
According to the present invention there is provided an IR radiation-sensitive imaging element comprising on a hydrophilic surface of a lithographic base an image forming layer comprising (1) a...
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6489079 |
Heat mode sensitive imaging element for making positive working printing plates
According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate comprising on a lithographic base with a hydrophilic surface a first layer...
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6485889 |
Method for obtaining a heat sensitive element by spray-coating
According to the present invention there is provided a method for obtaining a high quality printing plate by spraying a spray solution on a receiving surface of grained and anodized aluminum,...
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6485890 |
Lithographic printing forms
Thermally imageable lithographic printing plate precursors and heat-sensitive compositions for use in these printing plate precursors are disclosed. The compositions contain an aqueous developer...
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6482472 |
Method for producing a photopolymerizing lithographic plate including coating and conveying a web using rubber rollers before and after the coating step
Decrease in sensitivity can be avoided to obtain a stable and highly sensitized photosensitive layer in a process for preparing a photopolymerizing lithographic plate including a coating step and...
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6482571 |
On-press development of thermosensitive lithographic plates
This patent describes on-press ink and/or fountain solution development of lithographic plates having on a substrate a thermosensitive layer capable of hardening or solubilization upon exposure to...
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6482570 |
Method for producing lithographic printing plate
A method for producing a lithographic printing plate which comprises imagewise irradiating a lithographic printing plate precursor with a laser beam to make the irradiated part hydrophilic, wherein...
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6479216 |
Method for obtaining a heat sensitive element by spray-coating
According to the present invention there is provided a method for obtaining a high quality printing plate by spraying a spray solution on a receiving surface, which is not a grained and anodized...
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6475692 |
Radiation-sensitive compositions for printing plates for improving their chemical and developer resistance and printing plates comprising such compositions
Radiation-sensitive compositions comprise at least one novolak, at least one naphthoquinone diazide derivative and a copolymer; the copolymer consisting of the units A, B and C wherein unit A is...
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6468713 |
Phthalocyanine compounds, process for producing the same, and near infrared absorbent comprising the same
The invention relates to a novel phthalocyanine compound which absorbs in a near-infrared region of 700˜1000 nm with little absorption in the visible region of the spectrum and can be applied with...
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6465152 |
Imaging member containing heat sensitive thiosulfate polymer on improved substrate and methods of use
An imaging member is composed of a hydrophilic imaging layer having a hydrophilic heat-sensitive polymer containing heat-activatable thiosulfate groups, and optionally a photothermal conversion...
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