摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon an image-receiving layer comprising inorganic particles and a binder resin, wherein the inorganic particles comprise at least one kind of particles selected from: (i) metal oxide particles having an average particle size of from 0.01 to 5 &mgr;m and comprising a metal atom selected from Mg, Ba, Ge, Sn, Zn, Pb, La, Zr, V, Cr, Mo, W, Mn, Co, Ni and Cu; and (ii) double oxide particles having an average particle size of from 0.01 to 5 &mgr;m and comprising at least one metal atom selected from Mg, Al, Si, Ti, Zr, Cr, V, Mo, Sn, W and Nb, and wherein the binder resin comprises a complex comprising: a resin containing a bond in which a metal atom is connected with an oxygen atom; and an organic polymer containing a group capable of forming a hydrogen bond with the resin and at least one polar functional group selected from a carboxy group, a sulfo group and a phosphono group.
摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon an image-receiving layer, the image-receiving layer being formed from a dispersion comprising: an inorganic pigment comprising silica particles having an average particle diameter of from 1 to 6 &mgr;m and ultra-fine particles of inorganic pigment having an average particle diameter of from 5 to 50 nm, at a weight ratio thereof of from 40:60 to 70:30; and a hydrophilic binder resin comprising at least one modified hydrophilic binder resin which is modified with a silyl functional group represented by the following formula (I): —Si(R)n(OX)3-n (I) wherein R represents a hydrogen atom or a hydrocarbon group having from 1 to 12 carbon atoms; X represents an aliphatic group having from 1 to 12 carbon atoms; and n represents 0, 1 or 2. Also disclosed are methods of preparing a lithographic printing plate using the direct drawing type lithographic printing plate precursor.
摘要:
An electrophotographic lithographic printing plate, in which the effect by the hydrophilic property of non-image areas is further improved, and which is stable during storage even under very severe conditions and capable of readily realizing the hydrophilic property in a short time during processing of rendering hydrophilic is provided by a process for the production of an electrophotographic lithographic printing plate, comprising subjecting an electrophotographic photoreceptor to imagewise exposure and forming a toner image, the electrophotographic photoreceptor comprising an electroconductive support having provided thereon at least one photoconductive layer containing photoconductive inorganic compound and a binder resin, the binder resin comprising at least one resin (P) as defined herein, and optionally at least one crosslinking agent, and then subjecting a non-image area of the photoconductive layer to an oil-desensitizing processing with a processing solution containing a hydrophilic compound containing a substituent having a Pearson's nucleophilic constant n of at least 5.5.
摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon an image-receiving layer comprising inorganic particles and a binder resin, wherein the inorganic particles comprise at least one kind of particles selected from: (i) metal oxide particles having an average particle size of from 0.01 to 5 &mgr;m and comprising a metal atom selected from Mg, Ba, Ge, Sn, Zn, Pb, La, Zr, V, Cr, Mo, W, Mn, Co, Ni and Cu; (ii) metal hydroxide particles having an average particle size of from 0.01 to 5 &mgr;m, the metal hydroxide being represented by the formula (I): M(OH)x (I) wherein M represents a metal atom selected from Mg, Ba, Al, Ti, Zn, Cu, Ni, Sn, Co, Ge, Fe and La, and x represents a valence of the metal M; and (iii) double oxide particles having an average particle size of from 0.01 to 5 &mgr;m and comprising at least one metal atom selected from Mg, Al, Si, Ti, Zr, Cr, V, Mo, Sn, W and Nb, and wherein the binder resin comprises a complex comprising: a resin containing a siloxane bond in which a silicon atom is connected with an oxygen atom; and an organic polymer containing a group capable of forming a hydrogen bond with the resin containing a siloxane bond.
摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon an image-receiving layer, wherein the image-receiving layer is formed by film coating a dispersion prepared by wet dispersion processing, with a dispersion medium of a nonaqueous solvent, a mixture comprising at least dry zinc oxide, a binder resin and an organic compound which is soluble in the dispersion medium and contains at least one acid group selected from the group consisting of --CO.sub.2 H, --SO.sub.3 H and --PO.sub.3 H.sub.2, adding a water-soluble low molecular weight organic compound containing at least two or more --PO.sub.3 H.sub.2 groups, which can form a chelate compound with a zinc ion, and further effecting wet dispersion processing.
摘要翻译:包括在其上设置有图像接收层的耐水支撑体的直接拉伸型平版印刷版原版,其中,图像接收层通过将通过湿分散处理制备的分散体膜涂覆在非水溶剂的分散介质上而形成 ,至少包含干燥的氧化锌,粘合剂树脂和可溶于分散介质并含有至少一种选自-CO 2 H,-SO 3 H和-PO 3 H 2的酸基的有机化合物的混合物, 含有至少两个以上的PO 3 H 2基团的可溶性低分子量有机化合物,其可以与锌离子形成螯合化合物,并进一步进行湿分散处理。
摘要:
A direct drawing lithographic printing plate precursor, which includes a water-resisting support having provided thereon an image-receiving layer, an image being formed on the image-receiving layer with an oil-based ink by an electrostatic ink jet system, wherein the water-resisting support has at least a resin coating layer on the side opposite to the side on which the image-receiving layer is provided, wherein the resin coating layer includes a mixture containing from 10 to 90 wt % of a low density polyethylene having a density of from 0.915 to 0.930 g/ml and a melt index of from 1.0 to 30.0 g/10 min., wherein the surface of the resin coating layer has a Bekk's smoothness of from 5 to 2,000 sec/10 ml, and wherein the water-resisting support has a conductive layer having a specific electric resistance value of 1010 &OHgr; cm or less on the image-receiving layer side surface thereof and on at least one end face thereof. Also disclosed is a method for preparing a direct drawing lithographic printing plate using the printing plate precursor.
摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support and an image receiving layer provided thereon, wherein a surface of the water-resistant support has the Bekk smoothness in the range of from 900 to 3,000 (second/10 cc) and the image receiving layer contains zinc oxide, a binder resin and a water-soluble organic compound having at least one acidic group selected from --CO.sub.2 H, --SO.sub.3 H and --PO.sub.3 H.sub.2, which is capable of forming a chelate compound with zinc oxide or a zinc ion. The direct drawing type lithographic printing plate precursor provides a lithographic printing plate which produces prints having a clear image without stains even when it is subjected to electrostatic transfer of a toner image formed by an electrophotographic copying machine.
摘要:
An electrophotographic lithographic printing plate precursor having a photoconductive layer containing a resin which contains a functional group capable of forming --COOH group and a functional group capable of forming at least one group selected from --SO.sub.3 H group, --SO.sub.2 H group and --PO.sub.3 H group and which has a crosslinking structure.Owing to the specific polar group in the resin, a lithographic printing plate which is free from the occurrence of background stain and has excellent oil-desensitivity and high printing durability is provided.
摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon, an image-receiving layer comprising inorganic particles and a binder resin. The combination of an inorganic particles is made up of at least one kind of metal sulfide particle having an average particle size of sum 0.01 to 5 &mgr;m and at least one kind of particle which may be a metal oxide particle having an average particle size of sum 0.01 to 5 &mgr;m or a metal oxide hydrate having an average particle size of 0.01 to 5 &mgr;m. The binder resin is a complex composed of a resin containing a siloxane bond.
摘要:
A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon an image-receiving layer, the image-receiving layer containing: at least one metal oxide hydrate having an average particle size of from 0.01 to 5 pm and comprising a metal atom selected from Mg, Al, Zn, Ge, Ti, Co, Zr, Sn, Fe, Cu, Ni, Pb, Pd, Cd, Mo, Cr, Ga, Mn, V, Ce and La; and a binder resin containing a complex comprising: a resin containing a siloxane bond in which a silicon atom is connected with an oxygen atom; and an organic polymer containing a group capable of forming a hydrogen bond with the resin containing a siloxane bond.