Lithographic process using reaction of O-quinodimethane
AssigneeFuji Photo Film Co., Ltd.
InventorsNaonori Makino, Hidekazu Oohashi
Life of this patent
Estimating the term…
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.
Claims23
A lithographic process comprising the steps of:
- imagewise heating a presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophobic polymer and a compound having two or more o-quinodimethane structures or precursor structures thereof to polymerize the compound;
- and removing the unheated area of the image-forming layer to form a lithographic printing plate.
A lithographic process comprising the steps of:
- imagewise heating a presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophilic polymer and a compound having two or more o-quinodimethane structures or precursor structures thereof, said compound being contained in particles dispersed in the hydrophilic polymer to polymerize the compound and to fuse the particles together;
- and removing the unheated area of the image-forming layer to form a lithographic printing plate.
A lithographic printing process comprising the steps of:
- imagewise heating a presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophilic polymer and a compound having two or more o-quinodimethane structures or precursor structures thereof, said compound being contained in particles dispersed in the hydrophilic polymer to polymerize the compound and to fuse the particles together;
- attaching the plate to a printer;
- working the printer to remove the unheated area of the image-forming layer and to form a lithographic printing plate;
- and printing with the formed plate by supplying oily ink and dampening water to the plate.
A presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophobic polymer and a compound having two or more o-quinodimethane structures or precursor structures thereof.
A presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophilic polymer and a compound having two or more o-quinodimethane structures or precursor structures thereof, said compound being contained in particles dispersed in the hydrophilic polymer.
A lithographic process comprising the steps of:
- imagewise heating a presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophobic polymer having o-quinodimethane structures or precursor structures thereof to cross-link the hydrophobic polymer;
- and removing the unheated area of the image-forming layer to form a lithographic printing plate.
A lithographic printing process comprising the steps of:
- imagewise heating a presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophilic polymer and a hydrophobic polymer having o-quinodimethane structures or precursor structures thereof, said hydrophobic polymer being contained in particles dispersed in the hydrophilic polymer to cross-link the hydrophobic polymer and to fuse the particles together;
- attaching the plate to a printer;
- working the printer to remove the unheated area of the image-forming layer and to form a lithographic printing plate;
- and printing with the formed plate by supplying oily ink and dampening water to the plate.
A presensitized lithographic printing plate which comprises a hydrophilic support and an image-forming layer containing a hydrophobic polymer having o-quinodimethane structures or precursor structures thereof.
Dependencies are inferred from the claim text.