摘要:
A heat-sensitive negative-working lithographic printing plate precursor includes a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye; wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm; the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.80 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation; and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%.
摘要翻译:热敏负性平版印刷版原版包括具有亲水性表面的或具有亲水层的涂层及其上设置的涂层,所述涂层包括图像记录层,该图像记录层包括疏水性热塑性聚合物颗粒,粘合剂, 和红外吸收染料; 其中所述疏水热塑性聚合物颗粒具有通过光子相关光谱测量的平均粒径大于10nm且小于40nm; 通过流体力学分级测量,不考虑任选的抗衡离子的IR染料的量大于0.80mg / m 2热塑性聚合物颗粒的总表面; 并且疏水性热塑性聚合物颗粒相对于成像层的成分的总重量的量为至少60%。
摘要:
A heat-sensitive negative-working lithographic printing plate precursor include a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye; wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm; the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.80 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fraction; and—the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60-%.
摘要翻译:热敏负性平版印刷版原版包括具有亲水性表面的或具有亲水层的涂层和设置在其上的涂层的涂层,该涂层包括图像记录层,该图像记录层包括疏水性热塑性聚合物颗粒,粘合剂, 和红外吸收染料; 其中所述疏水热塑性聚合物颗粒具有通过光子相关光谱测量的平均粒径大于10nm且小于40nm; 通过流体力学分数测量,不考虑任选的抗衡离子的IR染料的量大于0.80mg / m 2热塑性聚合物颗粒的总表面; 和 - 相对于成像层的成分的总重量,疏水性热塑性聚合物颗粒的量为至少60%。
摘要:
A method for making a lithographic printing plate includes the steps of (i) providing a negative-working, heat-sensitive lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye, wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm, and the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.70 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation, and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%; (ii) exposing the precursor to infrared light; and (iii) developing the exposed precursor in an alkaline aqueous solution.
摘要:
A method for making a lithographic printing plate includes the steps of (i) providing a lithographic printing plate precursor including a coating, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye, wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm, and the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.70 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation, and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%; (ii) exposing the precursor to infrared light; and (iii) developing the exposed precursor in an alkaline aqueous solution.
摘要:
A method of making a lithographic printing plate includes the steps of: a) providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, (ii) a coating on the support including an imaging layer, and, optionally, an intermediate layer between the imaging layer and the support, wherein the imaging layer includes a switchable polymer, b) image-wise exposing the coating, whereby the polymer undergoes a chemical reaction induced by the exposing step thereby creating a lithographic image consisting of printing areas and non-printing areas wherein the non-printing areas are removable from the support by a gum solution, and c) developing the precursor by treating the coating of the precursor with the gum solution thereby removing the non-printing areas.
摘要:
A method of making a lithographic printing plate includes the steps of: a) providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, (ii) a coating on the support including an imaging layer, and, optionally, an intermediate layer between the imaging layer and the support, wherein the imaging layer includes a switchable polymer, b) image-wise exposing the coating, whereby the polymer undergoes a chemical reaction induced by the exposing step thereby creating a lithographic image consisting of printing areas and non-printing areas wherein the non-printing areas are removable from the support by a gum solution, and c) developing the precursor by treating the coating of the precursor with the gum solution thereby removing the non-printing areas.
摘要:
A conductive metal oxide based layer on a substrate is prepared by chemically reducing a metal salt in aqueous solution, coating the resulting aqueous metal dispersion after washing onto a substrate, preferably glass, and subjecting the coated layer to an oxidizing treatment, e.g. a heat step. In a preferred embodiment the metal oxide is tin oxide, or a mixture of tin oxide and another metal oxide.
摘要:
Colloidal metal alloy compositions are prepared by chemical reduction of mixtures of at least two types of metal ions in an aqueous medium. Coating such a composition onto a support provides heat mode recording elements with improved sensitivity to laser radiation.
摘要:
A method for making a negative-working, heat-sensitive printing plate precursor capable of switching from a hydrophilic state into a hydrophobic state upon exposure to heat and/or infrared light, including the steps of (i) providing a support having a surface comprising titanium, (ii) modifying the surface by producing an oxide of titanium following the steps of (1) anodizing the support and (2) annealing the anodized support under reduced pressure. Additionally, a method for making a negative-working, heat-sensitive printing plate precursor capable of switching from a hydrophilic state into a hydrophobic state upon exposure to heat and/or infrared light, including the steps of (i) providing a support having a surface including titanium, (ii) modifying the surface by producing an oxide of titanium following the steps of (1) etching the support and (2) anodizing the etched support.
摘要:
An improved heat mode recording element based on a thin metal layer, preferably bismuth, is disclosed, characterized in that it contains hypophosphorous acid, or phosphorous acid, or a mixture of both.