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6895860 |
Planographic printing plate precursor and its fixing method on plate cylinder
A planographic printing plate precursor and its fixing method on a plate cylinder of a printing press are disclosed, the planographic printing plate precursor comprising a flexible substrate and...
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6893795 |
Lithographic printing plate precursor and production method of lithographic printing plate
A positive working lithographic printing plate precursor comprising a lower layer containing a water-insoluble and alkali-soluble resin, and an upper heat-sensitive layer containing a...
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6893798 |
Method of lithographic printing with a reusable substrate
A method for treating a micro-emulsion that can be used for removing the ink-accepting areas of a lithographic printing master is disclosed, which enables to recycle the water from the used...
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6894000 |
Method for preparing imaged members and imaged members prepared thereby
The invention comprises a method of preparing an imaged member comprising a substrate having an imagable coating on a face thereof, the method comprising the steps of:
(a) imaging a...
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6890702 |
Light sensitive composition and light sensitive planographic printing plate precursor
Disclosed are a light sensitive composition containing A) an addition polymerizable ethylenically double bond-containing monomer, B) a photopolymerization initiator, and C) a polymer binder,...
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6890688 |
Lithographic template and method of formation and use
This invention relates to a lithographic template, a method of forming the lithographic template and a method for forming devices with the lithographic template. The lithographic template ( 10,...
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6887642 |
Multi-layer negative working imageable element
Multi-layer, negative working imageable elements useful as lithographic printing plate precursors are disclosed. The elements contain, in order, a support; an underlayer; and an imageable layer....
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6884568 |
Stabilized infrared-sensitive polymerizable systems
The use of certain mercapto compounds as shelf life improvers for infrared-sensitive lithographic printing plate precursors is disclosed. The compounds are five-membered heteroaromatic rings...
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6884561 |
Actinically imageable and infrared heated printing plate
A negative-working lithographic printing plate has a coating which is imaged by heating an area of the coating with an infrared laser and actinically reacting the coating in the heated area with...
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6884560 |
Lithographic printing plate precursor
A lithographic printing plate precursor comprising a hydrophilic support and an image-forming layer containing a heat radical-generating agent, a polymethine dye, and at least one component...
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6884563 |
Thermal imaging material containing combustible nitro-resin particles
A heat-sensitive composition can be used to make a heat-sensitive imaging material. The composition includes a water-soluble or water-dispersible binder and dispersed therein, a photothermal...
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6875557 |
Plate-making method of printing plate
A plate-making method of a printing plate comprising exposing a printing plate precursor having a photosensitive layer comprising a photopolymerizable composition containing (i) a crosslinking...
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6875545 |
Method of removing assist features utilized to improve process latitude
A method of transferring a lithographic pattern onto a substrate by use of a lithographic apparatus. The method includes the steps of: (1) defining features to be printed on the substrate; (2)...
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6864040 |
Thermal initiator system using leuco dyes and polyhalogene compounds
The present invention relates to IR-sensitive compositions containing an initator system comprising:
(a) at least one compound capable of absorbing IR radiation selected from triarylamine...
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6861202 |
Method for treating photosensitive lithographic printing plate
A method for treating a photosensitive lithographic printing plate, which comprises exposing the photosensitive lithographic printing plate to laser light, developing with a developer containing an...
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6861196 |
Photosensitive compositions having mixtures of alkoxy and non-alkoxy diazonium salt containing compounds
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...
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6858359 |
Thermally sensitive, multilayer imageable element
Multi-layer, positive working, thermally sensitive imageable elements, useful as lithographic printing plate precursors, are disclosed. The elements comprises a substrate, an underlayer over the...
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6851364 |
Printing plate material and production and regenerating methods thereof
A printing plate material which can be adapted to digitization of the printing process and recycled and a method for renewing it. As the printing plate material, there can be used one which...
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6852464 |
Method of manufacturing a thermally imageable element
Methods of manufacturing multi-layer thermally imageable elements useful as lithographic printing plate precursors are disclosed. The elements comprise a substrate, an underlayer, and an imageable...
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6849372 |
Method of manufacturing imaging compositions
The present invention provides methods of forming and using thermally imageable composite elements which may be developed into lithographic printing plates. More specifically, the present invention...
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6849386 |
Method for preparing master plate useful for making lithographic printing plate without need of dampening water
An object of the present invention is to provide a method for manufacturing such a dry lithographic printing master plate that has eliminated uneven plate performance and more specifically that...
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6846615 |
Method for making lithographic printing plate
The present invention provides a method for making a lithographic printing plate, which comprises imagewise exposing a presensitized plate having a photopolymerizable layer on a substrate having a...
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6846614 |
On-press developable IR sensitive printing plates
The present invention relates to IR-sensitive compositions suitable for the manufacture of printing plates developable on-press. The IR-sensitive compositions comprise a first polymeric binder...
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6846608 |
Method to reduce imaging effluence in processless thermal printing plates
A method to reduce effluence during or immediately after imaging of a printing plate is described. In one embodiment of the invention, the method comprises: (a) applying to a substrate a coating...
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6846613 |
Positive-working lithographic printing plate precursors
A positive-working printing plate precursor for wet lithographic printing is disclosed which comprises a support having a hydrophilic surface and a coating comprising a first layer closest to the...
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6844139 |
Method for forming a lithographic printing plate
Methods for forming images are disclosed. The images are formed by imaging and developing an imageable element comprising a layer of an imageable composition over a substrate. The imageable...
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6844140 |
Method for reducing start up blinding in no-process lithographic printing plates
A method for reducing start up blinding in no-process lithographic printing plates is disclosed. An imageable element, comprising an imageable layer over a substrate, is thermally imaged. The...
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6844138 |
Processes for producing lithographic printing plate
A process for producing a lithographic printing plate by on-press developing a heat-sensitive lithographic printing plate precursor having on a metallic base in this order (1) an ink-receptive...
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6843176 |
Method to remove unwanted, unexposed, radiation-sensitive layer in a lithographic printing plate
A method for forming a printing plate from a printing plate precursor having a radiation-sensitive layer, sensitive to radiation in a first frequency spectrum such as the far or near infrared, and...
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6841330 |
Planographic printing plate precursor
A positive planographic printing plate precursor comprising a recording layer containing a water-insoluble and alkali-soluble resin, an infrared absorbent and an organic quaternary ammonium salt. A...
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6841336 |
Plate-making method of lithographic printing plate
A plate-making method of a lithographic printing plate comprising exposing imagewise a photosensitive lithographic printing plate comprising an aluminum support and a photosensitive layer...
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6832554 |
System for direct-to-press imaging
A direct-to-press imaging method comprises: (a) applying an imageable coating to a printing cylinder, wherein the imageable coating comprises a composition such as a thermally switchable polymer...
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6833225 |
Lithographic printing method and lithographic printing apparatus thereof
A lithographic printing method forming a uniform layer of a hydrophobic substance on the entire surface of a printing plate precursor having a titanium dioxide-containing surface layer, by...
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6830862 |
Multi-layer imageable element with a crosslinked top layer
A positive working, multi-layer thermally imageable element is disclosed. The element comprises a substrate, an underlayer, and a top layer. The top layer comprises a crosslinked polymeric...
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6830874 |
Method for making lithographic printing plate
A method for preparing a lithographic printing plate which comprises imagewise exposing to light a presensitized plate useful for making a lithographic printing plate having an intermediate layer...
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6824947 |
Photosensitive composition comprising a phenol resin having a urea bond in the main chain
Photosensitive compositions comprising a phenol resin having a urea bond in the main chain, planographic printing plate precursors containing the photosensitive compositions, and methods for...
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6820551 |
Method and system for electronically generating exposure scale for laser imaging devices
A method for characterizing exposure levels in a platesetter comprises exposing regions of a plate at different exposure levels by modulating the power of an exposure beam and then analyzing the...
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6815681 |
Electron beam lithography apparatus using a patterned emitter
An electron beam lithography apparatus, which uses a patterned emitter, includes a pyroelectric plate emitter that emits electrons using a patterned metal thin layer formed on the pyroelectric...
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6815139 |
Method of processing a printing plate material with a single-fluid ink
A method of making a lithographic printing master is disclosed which comprises the steps of providing an imaging material which comprises a lithographic base having a hydrophilic surface and a...
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6811952 |
Process for photopolymerization of photosensitive lithographic printing plate
A photopolymerization process is disclosed, which comprises exposing a photosensitive lithographic printing plate containing at least one of sensitizing dyes represented by the following general...
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6811950 |
Presensitized plate useful for making lithographic printing plate and method for making lithographic printing plate therefrom
The present invention relates to a presensitized plate useful for making a lithographic printing plate comprising an intermediate layer and a photopolymerizable photosensitive layer on an aluminum...
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6808858 |
Use of carboxyl group-containing acetal polymers in light-sensitive compositions and lithographic printing plates
The present invention relates to a light-sensitive composition containing: (i) at least one diazonium polycondensation product or at least one system that can be radically polymerized and consists...
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6808857 |
Negative-working photosensitive composition and negative-working photosensitive lithographic printing plate
The present invention provides a negative-working photosensitive composition which can widen the preheat latitude upon exposure without increasing ablation, and a negative-working photosensitive...
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6808861 |
Positive photosensitive composition positive photosensitive lithographic printing plate and method for making positive photosensitive lithographic printing plate
A positive photosensitive composition showing a difference in solubility in an alkali developer as between an exposed portion and a non-exposed portion, which comprises, as components inducing the...
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6806020 |
Negative working imageable composition containing sulfonic acid
The present invention provides a thermally imageable composition, which includes an acid curable composition, an acid generator, a strong acid and optionally an infrared absorber. The present...
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6803167 |
Preparation of lithographic printing plates
Processes for imaging and developing imageable elements useful as lithographic printing plate precursors either thermally or with ultraviolet radiation that use the same developer are disclosed....
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6800426 |
Process for making a two layer thermal negative plate
A process for forming a negative image useful as a printing plate is disclosed. A photosensitive assembly that comprises (a) a hydrophilic support, (b) a first layer that comprises a polymer that...
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6800417 |
Lithographic printing plate precursor
A lithographic printing plate precursor comprising: an aluminum support; an interlayer; and a photosensitive layer in this order, wherein the aluminum support is surface-roughened and has an anodic...
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6794116 |
Negative photosensitive lithograhic printing plate
A negative photosensitive lithographic printing plate comprises: a support; and a photosensitive layer containing: i) a modified poly(vinyl alcohol) resin binder having a radical-polymerizable...
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6790595 |
Processless lithographic printing plate
A negative-working heat-sensitive material for making a lithographic printing plate by direct-to-plate recording is disclosed. The material comprises in the order given a lithographic base having a...
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