8results about "Lithography" patented technology

Non-printing indicia on a plate formed in part or in whole from microstructures formed via exposure through openings in a masking layer form elevated or sunken structures that represent one or more alphanumeric signs, digital codes, or alignment marks. An isolated micro alignment mark may be used in conjunction with a ring of LEDs to show alignment by a characteristic illumination pattern to a high degree of accuracy. Non-printing indicia may be derived from imaging a plurality of supercells defined by a plurality of exposed pixels and unexposed pixels disposed within each supercell boundary. Each supercell may have a first number of exposed pixel clusters, each cluster having a second number of exposed pixels, adjacent clusters spaced apart by a third number of unexposed pixels, and a padding between the supercell boundary and a closest exposed pixel cluster defining a fourth number of unexposed pixels.

A lithographic printing plate precursor including a support and an image-recording layer on the support, in which the image-recording layer contains a polymer A having a main chain containing two or more silicon atoms, and a hydrophilic group.

Provided are a lithographic printing plate precursor having excellent crystal precipitation suppressiveness, and a method of preparing a lithographic printing plate and a lithographic printing method in which the lithographic printing plate precursor is used. A lithographic printing plate precursor including a support and an image-recording layer on the support, in which the image-recording layer contains a non-onium-based polymerization initiator, a borate compound, an infrared absorber, and a compound A which is an onium salt with a cation having a shape index equal to or less than 2 times a shape index of a cationic moiety of the infrared absorber.

The present application provides a support for a lithographic printing plate, a lithographic printing plate precursor, and a method for producing a lithographic printing plate precursor, the support for a lithographic printing plate being capable of obtaining a lithographic printing plate precursor excellent in scratch resistance by being combined with an image recording layer. The support for a lithographic printing plate of the present application is a support for a lithographic printing plate including an aluminum plate and an anodized film of aluminum provided on the aluminum plate, a plurality of convex portions being present on the surface on the side of the anodized film of the support for a lithographic printing plate, the average value of the equivalent circle diameters of the cut surfaces of the convex portions in the positions higher than the position of the average height of the convex portions by 0.5 μm or more being 3.0 to 10.0 μm, and the density of the convex portions having a height higher than the position of the average height of the convex portions by 0.5 μm or more being 3000 to 9000 pieces / mm 2 .

The present invention provides a lithographic printing plate master that exhibits excellent transfer suppression of the image recording layer and good developability of the non-image areas, and a method for producing a lithographic printing plate using a lithographic printing plate master. [Solution] A lithographic printing plate and its application, comprising a support and an image recording layer on the support, wherein the image recording layer comprises a polymer A having a main chain containing two or more silicon atoms and a hydrophilic group.

A lithographic printing plate precursor including a support and an image-recording layer on the support, in which the image-recording layer contains a polymer A having a main chain containing two or more silicon atoms, and a hydrophilic group.

An object of the present invention is to provide a lithographic printing plate precursor from which a lithographic printing plate with excellent oil-based cleaner printing durability is obtained, a method of producing a lithographic printing plate, a printing method, and a method of producing an aluminum support. The lithographic printing plate precursor of the present invention is a lithographic printing plate precursor including an aluminum support, and an image recording layer disposed on the aluminum support, in which the aluminum support includes an aluminum plate and an anodized aluminum film disposed on the aluminum plate, the image recording layer is disposed on the aluminum support on a side of the anodized film, and an area ratio of projections with a height of 0.80 µm or greater from an average level, which is obtained by measuring a surface of the aluminum support on a side of the image recording layer in an area of 400 µm × 400 µm using a non-contact three-dimensional roughness meter, is 20% or less.

The present invention relates to a lithographic printing plate precursor. Disclosed is a lithographic printing plate precursor comprising a support and a coating, said coating comprising (i) a photopolymerisable layer comprising a polymerisable compound and an optionally substituted trihaloalkylsulphone photoinitiator, and (ii) a top layer provided over said photopolymerisable layer; characterised in that said top layer comprises an infrared absorbing dye, said infrared absorbing dye being capable of forming a printed image upon exposure to heat and / or IR radiation.