Eastman-Kodak Company

Kodak Polychrome Graphics, Gmbh

Yasuhiro Asawa

Eiji Hayakawa

Yasushi Miyamoto

Masamichi Kamiya

Maru Aburano

S Peter Pappas

Akira Igarashi

Yasuhiro Ishizuka

Motohiro Tsushima

Satoko Kumazumi

The present invention has an objective of providing a composition for a lithographic printing plate, which provides an image-forming layer exhibiting superior ink receptivity and uniformity, and in which a coating solution containing the composition possesses a good defoaming property and can effectively form an image-forming layer at high speed. In addition, the present invention has another objective of providing a lithographic printing plate precursor or a dummy plate which can be produced at high speed with superior production efficacy. The present invention provides a composition for a lithographic printing plate containing a fluoroaliphatic group-containing copolymer having a specific chemical structure, the lithographic printing plate precursor or a dummy plate containing a layer having the aforementioned composition.

Composition for lithographic printing plate and lithographic printing plate precursor

A positive-working lithographic printing plate precursor exhibits satisfactory developability and has long print run length, satisfactory scratch resistance, and exhibits improved ink receptivity. This precursor has an image forming layer comprising a water-insoluble and alkali-soluble or alkali-dispersible resin. The image forming layer comprises at least a lower layer and an upper layer. A resin in at least one of the lower layer and the upper layer is a polyurethane including a recurring unit comprising a substituent having an acidic hydrogen atom and a recurring unit represented by the following formula: wherein Ris an alkyl or polyether group in which at least 50% of hydrogen atoms have been fluorinated, Ris a hydrogen atom, or a substituted or non-substituted alkyl group, m is 0 or 1 to 10, n is 1 to 30, and x is 1 to 4.

Lithographic printing plate precursor and a method for making a printing plate

The present invention relates to a positive working lithographic printing plate precursor, comprising:

Positive working lithographic printing plate precursor and process for preparing lithographic printing plate

The present invention provides a lithographic printing plate precursor which exhibits satisfactory ink cleanup and restart toning characteristics during printing. Disclosed is a lithographic printing plate precursor comprising a substrate having thereon in order an interlayer containing a copolymer comprising K units and L units, and an image-forming layer, wherein 

Lithographic printing plate precursor

To provide an infrared-sensitive or heat-sensitive lithographic printing plate precursor which has high printing durability and wide development latitude, and also has good developing properties capable of preventing the formation of deposits during the development. In an infrared-sensitive or heat-sensitive lithographic printing plate precursor, comprising a substrate, a first image recording layer formed on the substrate, and a second image recording layer formed on the first image recording layer, the first image recording layer contains a resin which is soluble or dispersible in an aqueous alkali solution, and the second image recording layer contains a polyurethane which has a substituent having an acidic hydrogen atom.

Lithographic-printing plate precursor and image forming method using the same

The present invention includes a two-layer imageable element, including: a substrate, a top layer including a first thermally imageable composition including (a) a first thermally sensitive supramolecular polymer or (b) a thermally imageable composition free of the first thermally sensitive supramolecular polymer; and disposed between the substrate and the top layer, a bottom layer including a second thermally imageable composition, which includes a second thermally sensitive supramolecular polymer. The present invention also includes a method of producing the imaged element.

Growing community of inventors

Oata, Japan

Yasuhiro Asawa