Abstract: An image-recording materials containing (A) a compound having a specific partial structure and at least one group selected from an acid group having a pKa of 11 or less, the derivative of the acid group and a group capable of generating the acid group, a lithographic printing plate precursor having an image-recording layer containing the compound (A), and a lithographic printing method using the lithographic printing plate precursor, are provided.

Abstract: The present invention relates to a planographic printing plate precursor comprising a substrate comprising a hydrophilic surface having disposed thereon a heat-sensitive layer containing a thermoplastic particulate polymer having functional groups capable of interacting with the hydrophilic surface. Preferably, hydrophilic graft polymer chains are present on the hydrophilic surface of the substrate. The present invention further relates to a planographic printing plate precursor comprising a substrate comprising a hydrophilic surface having disposed thereon a heat-sensitive layer comprising microcapsules comprising a compound having functional groups capable of interacting with the hydrophilic surface. In addition, the present invention relates to methods of printing with the planographic printing plate precursors.

Abstract: A lithographic printing plate precursor comprising a support having a hydrophilic surface having provided thereon an image-forming layer containing a hydrophobic high molecular compound having at least either a functional group represented by formula (1) or a functional group represented by formula (2): wherein X+ represents an iodonium ion, a sulfonium ion or a diazonium ion.

Abstract: A lithographic printing plate precursor comprising a support having provided thereon a hydrophilic layer which is converted to hydrophobic by heating, wherein the hydrophilic layer contains (1) an organic and inorganic composite having a crosslinking structure obtained by hydrolysis and poly-condensation on condition of coexistence of a metal complex compound and an organic hydrophilic resin, and (2) core-shell structural fine particles containing a resin core having a functional group capable of interacting with the organic and inorganic composite and a resin shell not substantially having a functional group capable of interacting with the organic and inorganic composite.

Abstract: A heat-sensitive lithographic printing plate precursor comprising a substrate having ink-receptive surface or coated with an ink-receptive layer having provided thereon a hydrophilic layer which comprises: (1) a colloid of an oxide or a hydroxide of at least one element selected from the group consisting of beryllium, magnesium, aluminum, silicon, titanium, boron, germanium, tin, zirconium, iron, vanadium, antimony, and transition metals, (2) a hydrophilic resin, and (3) a light-to-heat conversion material.

Abstract: A lithographic printing plate precursor having an image-forming layer capable of drawing images by heat or heat mode exposure, which comprises a support and a layer containing a heat decomposable dye having an absorption maximum wavelength in a visible region, not substantially having an absorption in an oscillation wavelength of a laser used for heat mode exposure, and having a heat decomposition initiation temperature of 250° C. or lower.

Abstract: A lithographic printing plate precursor comprising a support having a hydrophilic surface having provided thereon an image-forming layer containing a hydrophobic high molecular compound having at least either a functional group represented by formula (1) or a functional group represented by formula (2): wherein X+ represents an iodonium ion, a sulfonium ion or a diazonium ion.

Abstract: A lithographic process comprises the steps of imagewise heating a presensitized lithographic printing plate and removing an unheated area of an image-forming layer to form a lithographic printing plate. The presensitized lithographic printing plate comprises a hydrophilic support and the image-forming layer. The image-forming layer contains a compound or a polymer having o-quinodimethane structures or precursor structures thereof. The lithographic printing plate is prepared by a reaction of the o-quinodimethane structures.

Abstract: A lithographic printing plate precursor comprising a support having a hydrophilic surface having provided thereon an image-forming layer containing a hydrophobic high molecular compound having at least either a functional group represented by formula (1) or a functional group represented by formula (2): 1

Abstract: A lithographic printing plate precursor which comprises a support having a hydrophilic surface having provided thereon in order of a layer containing a latex (layer A) and an ink-receptive layer (layer B) whose solubility at least either in water or in an aqueous solution is converted by heat, wherein at least one layer of either layer A or layer B contains a light/heat converting agent.

Abstract: A lithographic printing plate precursor comprising: a support having a water-wettable surface; and a heat-sensitive layer comprising a first resin having a hydrogen-donating group and a second resin having a hydrogen-accepting group, wherein at least one of the first resin and the second resin is particles.

Abstract: A lithographic printing plate precursor which comprises a support having a hydrophilic surface having provided thereon in order of a layer containing a latex (layer A) and an ink-receptive layer (layer B) whose solubility at least either in water or in an aqueous solution is converted by heat, wherein at least one layer of either layer A or layer B contains a light/heat converting agent.

Abstract: A lithographic printing plate precursor comprising a support having provided thereon a hydrophilic layer which is converted to hydrophobic by heating, wherein the hydrophilic layer contains (1) an organic and inorganic composite having a crosslinking structure obtained by hydrolysis and poly-condensation on condition of coexistence of a metal complex compound and an organic hydrophilic resin, and (2) core-shell structural fine particles containing a resin core having a functional group capable of interacting with the organic and inorganic composite and a resin shell not substantially having a functional group capable of interacting with the organic and inorganic composite.

Abstract: A lithographic process comprises the steps of image-wise heating a presensitized lithographic printing plate and removing an unheated area of an image-forming layer to form a lithographic printing plate. The presensitized lithographic printing plate comprises a hydrophilic support and the image-forming layer. The image-forming layer contains a compound or a polymer having o-quinodimethane structures or precursor structures thereof. The lithographic printing plate is prepared by a reaction of the o-quinodimethane structures.

Abstract: The present invention relates to a planographic printing plate precursor comprising a substrate comprising a hydrophilic surface having disposed thereon a heat-sensitive layer containing a thermoplastic particulate polymer having functional groups capable of interacting with the hydrophilic surface. Preferably, hydrophilic graft polymer chains are present on the hydrophilic surface of the substrate. The present invention further relates to a planographic printing plate precursor comprising a substrate comprising a hydrophilic surface having disposed thereon a heat-sensitive layer comprising microcapsules comprising a compound having functional groups capable of interacting with the hydrophilic surface. In addition, the present invention relates to methods of printing with the planographic printing plate precursors.

Abstract: A lithographic printing plate precursor having an image-forming layer capable of drawing images by heat or heat mode exposure, which comprises a support and a layer containing a heat decomposable dye having an absorption maximum wavelength in a visible region, not substantially having an absorption in an oscillation wavelength of a laser used for heat mode exposure, and having a heat decomposition initiation temperature of 250 ° C. or lower.

Abstract: 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 particulate polymer and microcapsules, which is excellent in on press developing property, sensitivity and printing durability.

Abstract: A lithographic printing plate precursor is disclosed, comprising a support having sequentially formed thereon a layer containing an ionic polymer complex (Layer A) which is insoluble in water and an aqueous alkali solution and a recording layer thermally variable in the solubility in at least one of water and an aqueous solution (Layer B), the support having a hydrophilic surface and at least one of Layer A and Layer B containing a light-heat converting agent.

Abstract: A lithographic printing plate precursor comprising:

Abstract: A lithographic printing plate precursor is disclosed, comprising a support having thereon a photosensitive layer containing 6 wt % or more of an infrared absorbent which changes from hydrophilic to hydrophobic by heat, the support having a hydrophilic surface.