Fuji Photo Film Company, Limited

Kazuo Fujita

Shiro Tan

Akira Nagashima

Koichi Kawamura

Tadahiro Sorori

Syunichi Kondo

Yasuo Okamoto

Kazuhiro Fujimaki

Noriaki Watanabe

Akira Nishioka

Takeshi Serikawa

A lithographic printing plate precursor comprises: a support; and an image-forming layer including a fluoroaliphatic group-containing copolymer, wherein the fluoroaliphatic group-containing copolymer contains a repeating unit corresponding to monomer (i) below and a repeating unit corresponding to monomer (ii) below:

Lithographic printing plate precursor

The present invention provides a copolymer comprising repeating units derived from (A) at least one fluoroalkyl (meth) acrylate represented by the following general formula (I) or (II): wherein, Xrepresents &#x2014;O&#x2014; or &#x2014;NR&#x2014;; Rrepresents &#x2014;H or &#x2014;CH; Rrepresents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 12 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms or a substituted or unsubstituted aralkyl group having 7 to 24 carbon atoms; Rrepresents H or F; m is an integer ranging from 0 to 10; n is an integer of 2 or 3; and o and p each represents an integer of 1 or 2, and (B) at least one polyoxyalkylene group-containing ethylenically unsaturated monomer, and also provides an image-forming composition, a presensitized plate useful for preparing a lithographic printing plate, a paint composition or a photo resist composition comprising the copolymer. The fluoroaliphatic group-containing copolymer can provide a coating composition capable of simultaneously satisfying the requirements for the ability of a coating liquid to wet the base material and the uniform coating ability upon the application of the liquid and the post-processing aptitudes such as the re-coating ability of the coated film and developing ability as well as the foaming ability of the coating liquid.

Fluoroaliphatic group-containing copolymer

The present invention provides a presensitized plate useful for preparing a lithographic printing plate, which comprises a substrate provided thereon with a light-sensitive layer containing a fluoro-aliphatic group-containing copolymer prepared by copolymerizing at least (A) a fluoroalkyl(meth)acrylate represented by the general formula (I) and (B) a polyoxyalkylene group-containing ethylenic unsaturated monomer. By such a presensitized plate, a lithographic printing plate is provided with a light-sensitive layer whose uniformity and solubility or dispersibility in a developer are improved and which has an ability of forming high contrast images without entraining any reduction of the sensitivity.

Presensitized plate for preparing lithographic printing plate

A photosensitive resin composition containing a high molecular compound having at least a) a fluoro aliphatic group, and b) a group represented by formula &mdash;L&mdash;P (wherein L represents a divalent organic group connected to the skeleton of the high molecular compound, and P represents an aromatic group having a carboxyl group at the ortho-position).

Photosensitive resin composition

A presensitized plate for preparing a lithographic printing plate comprises a substrate provided thereon with a light-sensitive layer containing a fluoro-aliphatic group-containing copolymer prepared by copolymerizing at least (A) an addition polymerizable monomer having, on a side chain, a fluoro-aliphatic group in which hydrogen atoms are replaced with fluorine atoms and (B) a (meth)acrylate having an ester chain represented by a specific general formula. The use of the foregoing specific fluorine atom-containing polymer permits the formation of a light-sensitive layer having uniform surface condition without causing abnormality in the surface quality due to the foaming phenomenon observed during the production and also permits the production of a positive light-sensitive resin composition having excellent solubility and dispersibility in a developer.

The present invention relates to a photosensitive compound comprising a vinyl polymer compound which is insoluble in water and soluble in an aqueous alkaline solution and o-naphthoquinonediazide compound, wherein said vinyl polymer compound is a copolymer comprising at least one monomer unit derived from monomer compound (A): a compound having an alkaline-soluble group represented by general formula (I), (II) or (III) as defined in the specification, and at least one monomer unit derived from monomer compound (B): (meth)acrylate having poly(oxyalkylene) chain. A lithographic printing plate prepared from a presensitized plate having a photosensitive layer of said photosensitive compound of the present invention shows improvement of abrasion resistance, printing durability, chemical resistance, development latitude, and contamination property.

Photosensitive composition comprising a vinyl copolymer and an o-naphthoquinone diazide compound

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 least one ester of 1,2-naphthoquinone-2-diazide-5-sulfonic acid, at least one ester of 1,2-naphthoquinone-2-diazide-4-sulfonic acid, and at least one polymer which is insoluble in water and soluble in an aqueous alkaline solution and which comprises at least one group or bond selected from sulfonamide group, urea bond or urethane bond. A lithographic printing plate prepared from the presensitized plate of the present invention shows improvement of chemical-resistance and printing durability, and good sensitivity, coupling property, adaptability to ball-point pen, shelf stability, and stability of sensitivity with time after exposure.

Positive-working presensitized plate useful for preparing a lithographic printing plate

A photopolymerizable composition is disclosed, comprising at least A) a compound having an addition-polymerizable ethylenically unsaturated bond, B) a metallocene compound photopolymerization initiator and C) a polymer binder having an amido group on the side chain thereof and being substantially soluble in an alkali water.

Photopolymerizable composition

A photopolymerizable composition is disclosed, which comprises an addition-polymerizable compound having at least one ethylenically unsaturated double bond, a sensitizing dye represented by the following formula (I): ##STR1## wherein the all symbols are defined in the disclosure, and a titanocene compound.

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Shizuoka-ken, Japan

Kazuo Fujita