Planographic printing plate material and planographic printing plate preparing process
AssigneeKonica Minolta Medical & Graphic, Inc.
InventorToshiyuki Matsumura
Life of this patent
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Abstract
Disclosed are a planographic printing plate material and a planographic printing plate preparing process, the planographic printing plate material comprising a support and provided thereon, an image formation layer containing a colorant (a) having an absorption band in a wavelength region of from 700 to 1200 nm, a polymerization initiator (b) and a polymerizable ethylenically unsaturated compound (c), the image formation layer being an outermost layer, wherein the polymerization initiator (c) is a compound represented by the following formula (1), R1—C(X)2—(C═O)—(Y)n—R2 Formula (1)
Claims13
A planographic printing plate material comprising a support and provided thereon, an image formation layer containing a colorant (a) having an absorption band in a wavelength region of from 700 to 1200 nm, a polymerization initiator (b) and a polymerizable ethylenically unsaturated compound (c), the image formation layer being an outermost layer, wherein the polymerization initiator (c) is a compound represented by the following formula (1),
- R1—C(X)2—(C═O)—(Y)n—R2 Formula (1)
- wherein R1 represents a hydrogen atom, a bromine atom, a chlorine atom, an alkyl group, an aryl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group or a cyano group;
- R2 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, provided that R1 and R2 may combine with each other to form a ring;
- X represents a bromine atom or a chlorine atom;
- Y represents —O— or —NR3— in which R3 represents a hydrogen atom or an alkyl group;
- and n represents an integer of 0 or 1.
A planographic printing plate material comprising a support and provided thereon, an image formation layer containing a colorant (a) having an absorption band in a wavelength region of from 700 to 1200 nm, a polymerization initiator (b) and a polymerizable ethylenically unsaturated compound (c), the image formation layer being an outermost layer, wherein the polymerization initiator (c) is a compound represented by the following formula (2),
- R1′—C(X′)2—(C═O)—(Y′)n′L[(Y′)n′—(C═O)—C(X′)2—R1′]m Formula (2)
- wherein R1′ represents a hydrogen atom, a bromine atom, a chlorine atom, an alkyl group, an aryl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, or a cyano group;
- X represents a bromine atom or a chlorine atom;
- Y′ represents —O— or —NR3′— in which R3′ represents a hydrogen atom or an alkyl group;
- n′ represents an integer of 0 or 1;
- L represents a divalent, trivalent or tetravalent group;
- and m represents an integer of from 1 to 3.
Dependencies are inferred from the claim text.