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51. 发明专利

JP2002370439A Lithographic printing method with single-fluid ink 审中-公开
标题翻译：具有单流油墨的平版印刷方法
公开(公告)号：JP2002370439A
公开(公告)日：2002-12-24
申请号：JP2002075915
申请日：2002-03-19
申请人： Agfa Gevaert Nv , アグフア−ゲヴエルト,ナームローゼ・フエンノートシヤツプ
发明人： VAN DAMME MARC , VERMEERSCH JOAN
IPC分类号： G03F7/004 , B41C1/10 , B41M1/06 , B41M1/08 , B41N1/14 , C09D11/02 , C09D11/10 , G03F7/00
CPC分类号： B41C1/1041 , B41M1/06
摘要： PROBLEM TO BE SOLVED: To provide a printing method, in which a non-ablative process-less image forming material is employed so as to produce a lithographic printing plate giving a high quality print. SOLUTION: Disclosed is a lithographic printing method including the following steps: a step for preparing an image forming material including a support and an image-recording layer or an image-recording surface under the condition that the layer or the surface can not be ablated by a single-fluid ink including ink phase and polar phase; a step for exposing the image forming material by means of heat or light true to the image so as to change-over the affinity to the ink or the ink-repellent fluid of the image-recording layer or surface and consequently making a printing master including a lithographic printing image consisting of a non-exposed region having the affinity on either one of the ink phase and the polar phase and an exposed region having the affinity on the other phase between the ink phase and the polar phase; and a step for supplying the single-fluid ink to the printing master for executing printing. The exposed image-recording layer, which normally emerges the inferior specialization of the hydrophilicity or lipophilicity between the exposed region and the non-exposed region, gives a high quality printing copy in the combination with the single-fluid ink.
摘要翻译：要解决的问题：提供一种印刷方法，其中采用非烧蚀处理的图像形成材料以产生提供高质量印刷品的平版印刷版。解决方案：公开了一种平版印刷方法，包括以下步骤：在层或表面不能被烧蚀的条件下制备包括载体和图像记录层或图像记录表面的图像形成材料的步骤包括油墨相和极性相的单流体油墨; 用于通过图像的热或光对图像形成材料进行曝光以便转换与图像记录层或表面的墨水或拒墨液的亲和力的步骤，并因此制作包括平版印刷图像由对油墨相和极性相中的任一个具有亲和性的非曝光区域和在油墨相和极性相之间的另一相上具有亲和性的曝光区域组成; 以及用于将单液体墨水供应到用于执行打印的打印主机的步骤。暴露的图像记录层通常在曝光区域和非曝光区域之间出现亲水性或亲油性差的特征，与单流体油墨组合提供了高质量的印刷品。

52. 发明专利

JP2002365793A POSITIVELY WORKING PLANOGRAPHIC PRINTING PLATE PRECURSOR 审中-公开
公开(公告)号：JP2002365793A
公开(公告)日：2002-12-18
申请号：JP2002105103
申请日：2002-04-08
申请人： AGFA GEVAERT NV
发明人： VERMEERSCH JOAN , VAN DAMME MARC
IPC分类号： G03F7/004 , B41C1/10 , B41M5/36 , G03F7/00 , G03F7/075 , G03F7/11
摘要： PROBLEM TO BE SOLVED: To provide a positively working printing plate precursor exhibiting high differentiation between exposed and unexposed regions and having good storage stability. SOLUTION: The positively working printing plate precursor includes a support having a hydrophilic surface and a coating including a first layer containing a lipophilic phenolic resin soluble in an aqueous alkaline developing solution and closest to the support and a second layer containing an amphiphilic polymer. (a) When the coating is immersed in the aqueous alkaline developing solution for a time t2 , the second layer can prevent the aqueous alkaline developing solution from permeating the first layer to such a degree that dissolution of the unexposed coating does not substantially occur, and (b) when the coating is exposed to heat or light, the power of the second layer to prevent the aqueous alkaline developing solution from permeating the first layer is lowered to such a degree that substantially through dissolution of the exposed coating occurs when the coating is immersed in the aqueous alkaline developing solution for a time t1 .

53. 发明专利

JP2002333705A METHOD FOR PRODUCING NEGATIVE WORKING HEAT SENSITIVE PLANOGRAPHIC PRINTING PLATE PRECURSOR 审中-公开
公开(公告)号：JP2002333705A
公开(公告)日：2002-11-22
申请号：JP2002075943
申请日：2002-03-19
申请人： AGFA GEVAERT NV
发明人： VERMEERSCH JOAN , VAN DAMME MARC
IPC分类号： G03F7/004 , B41C1/055 , B41C1/10 , B41M5/36 , B41N1/14 , G03F7/00 , G03F7/38
摘要： PROBLEM TO BE SOLVED: To provide a composition capable of producing a planographic printing plate precursor which works in accordance with heat induced coalescene or fusion of hydrophobic thermoplastic polymer particles and can ensure a toning- free high run length. SOLUTION: The method for producing a negative working heat sensitive planographic printing plate precursor includes (a) a step for preparing an aqueous dispersion containing particles of a hydrophobic thermoplastic polymer A which is not soluble or swellable in an aqueous alkaline developing solution and particles of a polymer B which is soluble or swellable in the aqueous alkaline developing solution but is not soluble or swellable in water, wherein the glass transition temperature of the polymer A is higher than the softening temperature of the polymer B, (b) a step for applying the aqueous dispersion on a planographic printing substrate having a hydrophilic surface to obtain an image-recording layer and (c) a step for entirely heating the image-recording layer at a higher temperature than the softening temperature of the polymer B at which coalescene of particles of the polymer A is not caused. The resulting printing plate precursor has an enhanced mechanical resistance.

54. 发明专利

JP2002331635A CLEANING METHOD FOR RECYCLING PRINTING SUBSTRATE BY LASER ABLATION 审中-公开
公开(公告)号：JP2002331635A
公开(公告)日：2002-11-19
申请号：JP2002035135
申请日：2002-02-13
申请人： AGFA GEVAERT NV
发明人： VERSCHUEREN ERIC , VAN DAMME MARC
IPC分类号： B41C1/055 , B41C1/10 , B41N1/14 , B41N3/00 , C23C26/00 , C23F4/00 , C23F4/02 , G03F7/00 , G03F7/42
摘要： PROBLEM TO BE SOLVED: To provide a cleaning method for effectively cleaning the substrate of a printing master without affecting the quality of the substrate of the printing master to make the substrate to be reused in a next printing cycle without developing a ghost image. SOLUTION: In the method for removing an ink receiving region from the printing master by laser ablation, the printing master includes the substrate having a support and a base layer, and the base layer contains a crosslinked hydrophilic binder and a metal oxide. Further, (a) the substrate having the support and the base layer containing the crosslinked hydrophilic binder and the metal oxide is prepared, (b) one or more layer are adapted to the base layer to obtain an image forming material, (c) the image forming material is imagewise exposed to heat or light and, depending on circumstances, the image forming material is treated, to manufacture the printing master having the ink receiving region to be printed (d) (e) the ink receiving region is removed from the printing master by laser ablation, and (f) the stages (a)-(d) are repeated to also provide a method for performing planographic printing by the reusable substrate.

55. 发明专利

JP2002046248A COMPUTER-TO-PLATE METHOD USING INK JET 失效
公开(公告)号：JP2002046248A
公开(公告)日：2002-02-12
申请号：JP2001155417
申请日：2001-05-24
申请人： AGFA GEVAERT NV
发明人： LOCCUFIER JOHAN , VAN DAMME MARC , OELBRANDT LEO , HENDRIKX PETER
IPC分类号： B41J2/01 , B41C1/10 , B41M5/00 , C09D11/00
摘要： PROBLEM TO BE SOLVED: To provide a method for simply and inexpensively manufacturing a planographic printing plate. SOLUTION: In the method for manufacturing the planographic printing plate, including a process for distributing small drops of a fluid on the surface of a planographic receiving material according to data by ink jet printing, the fluid contains an oleophilizing agent and the oleophilizing agent has a phosphorus-containing group capable of reacting with the surface of the planographic receiving material in its chemical structure.

56. 发明专利

JP2001047759A PROCESSLESS PRINTING PLATE HAVING HIGH RATIO OF INORGANIC PIGMENT VERSUS CURING AGENT 失效
公开(公告)号：JP2001047759A
公开(公告)日：2001-02-20
申请号：JP2000194285
申请日：2000-06-28
申请人： AGFA GEVAERT NV
发明人： VAN DAMME MARC , VERMEERSCH JOAN
IPC分类号： G03F7/004 , B41C1/055 , B41C1/10 , B41N1/14 , G03F7/00 , G03F7/11
摘要： PROBLEM TO BE SOLVED: To provide a heat-sensitive material of a high sensitivity and a high quality regarding a small quantity to toning at the time of a starting by specifying a ratio of an inorganic pigment versus a curing agent when a lithographic printing plate, which is equipped with a bridge-bonded hydrophilic layer, constituted by containing an IR-photosensitive lipophilic layer, the inorganic pigment and the curing agent on a supporting body, is manufactured. SOLUTION: For a heat-sensitive material in order to manufacture a lithographic printing plate, which is equipped with an ablatable bridge-bonded hydrophilic layer constituted by containing an IR-photosensitive lipophilic layer, an inorganic pigment and a curing agent, on a supporting body, the ratio of the inorganic pigment versus the curing agent is set to be within a range of 95/5 to 75/25 by the weights. In this case, the supporting body is a lithographic printing plate base having a hydrophilic surface. Also, the IR-photosensitive lipophilic layer is set to be within a range of 0.1 to 0.75 g/m2 by the dry weight. At the same time, a heat-sensitive compound, which can convert a binder and light into heat, i.e., carbon black, is contained. In addition, in the bridge-bonded hydrophilic layer, beryllium, magnesium, aluminum or an oxide of a fiber metal and others are contained.

57. 发明专利

JP2001039046A UNTREATED PRINTING PLATE HAVING LOW RATIO OF INORGANIC PIGMENT/MEMBRANE HARDENING AGENT 失效
公开(公告)号：JP2001039046A
公开(公告)日：2001-02-13
申请号：JP2000191223
申请日：2000-06-26
申请人： AGFA GEVAERT NV
发明人： VAN DAMME MARC , VERMEERSCH JOAN
IPC分类号： G03F7/004 , B41C1/055 , B41C1/10 , B41N1/14 , G03F7/00 , G03F7/11
摘要： PROBLEM TO BE SOLVED: To increase sensitivity and to improve lithographic printing with respect to an especially high run length by forming an IR-sensitive lipophilic layer and a crosslinked hydrophilic layer containing an inorganic pigment and a membrane hardening agent on a support and setting up an inorganic pigment/ membrane hardening agent ratio within a specified range. SOLUTION: An image is formed on a heat mode recording material by using a laser. In a thermosensible material in which an IR-sensitive lipophilic layer and a crosslinked hydrophilic layer containing an inorganic pigment and a membrane hardening agent are formed on a support, by using a lithographic base combined with a low inorganic pigment/membrane hardening agent ratio in the hydrophilic layer, a high run length is obtained. The ratio is set up at 75/25-25/75. The dry weight of the lipophilic layer containing a binder and a compound which can convert light into heat is preferably 0.10-0.75 g/m2, more preferably 0.15-0.5 g/m2.

58. 发明专利

JP2000131832A HEAT MODE SENSITIVE IMAGE FORMING ELEMENT FOR MANUFACTURE OF POSITIVE WORKING PRINTING PLATE 失效
公开(公告)号：JP2000131832A
公开(公告)日：2000-05-12
申请号：JP10514199
申请日：1999-04-13
申请人： AGFA GEVAERT NV
发明人： VAN DAMME MARC , VERMEERSCH JOAN , VERSCHUEREN ERIC , HAUQUIER GUIDO
IPC分类号： G03F7/039 , B41C1/10 , B41M5/36 , B41N1/14 , G03F7/00 , G03F7/11
摘要： PROBLEM TO BE SOLVED: To provide a heat mode image forming element capable of giving a planographic printing plate having superior printability by an easy method, capable of development by a selective, rapid, easy and ecological method and having high infrared sensitivity and a large difference in developability between exposed and unexposed regions. SOLUTION: The heat mode image forming element for giving a planographic printing plate contains a planographic printing base having a hydrophilic surface and a top layer sensitive to IR, containing a polymer soluble in an aqueous alkaline solution and impermeable to an aqueous alkaline developer. The top layer also contains a polysiloxane surfactant.

59. 发明专利

JP2000035662A MANUFACTURE OF POSITIVE ACTIVE PRINTING PLATE FROM HEAT MODE SENSITIVE IMAGE FORMING ELEMENT 失效
公开(公告)号：JP2000035662A
公开(公告)日：2000-02-02
申请号：JP6493699
申请日：1999-03-11
申请人： AGFA GEVAERT NV
发明人： VAN DAMME MARC , VERMEERSCH JOAN , VERSCHUEREN ERIC , JUNG JOERG DR , HABENHAUER HELMUTH
IPC分类号： G03F7/004 , B41C1/10 , B41M5/36 , B41N1/14 , G03F7/00
摘要： PROBLEM TO BE SOLVED: To provide a heat mode image forming element having a high IR sensitivity developable by a selective, rapid, simple and ecological method for manufacturing a positive planographic printing plate having excellent printability with a simple method. SOLUTION: The heat mode image forming element, which is a heat mode image forming element for manufacture of the planographic printing plate having a first layer contg. a polymer soluble in an aq. alkaline soln. on a planographic printing base having a hydrophilic surface and the uppermost layer on the same side as the first layer of the planographic printing base nonpermeable to an alkaline developer contg. SiO2 in the form of silicate and insoluble into this developer and contains a compd. capable of converting IR- light to heat in the first layer and the uppermost layer, is provided.

60. 发明专利

JPH11265062A THERMOSENSITIVE ELEMENT AND METHOD FOR FORMING LITHOGRAPHIC PRINTING PLATE 失效
公开(公告)号：JPH11265062A
公开(公告)日：1999-09-28
申请号：JP1190899
申请日：1999-01-20
申请人： AGFA GEVAERT NV
发明人： VERMEERSCH JOAN , VAN DAMME MARC , KOKKELENBERG DIRK
IPC分类号： G03F7/004 , B41C1/10 , B41M5/36 , B41M5/46 , B41N1/14 , G03F7/00
摘要： PROBLEM TO BE SOLVED: To provide a thermosensitive image forming element having high sensitivity for forming a lithographic printing plate superior in ink receptivity and free from scum formation by a simple method and developable on a printing machine. SOLUTION: This image forming element is provided on a lithographic printing base having a hydrophilic surface with an image forming layer containing thermoplastic styrene homopolymer or copolymer particles and a hydrophilic polymer having carboxylic groups, and further this image forming layer or its adjacent layer contains an anionic IR-cyanine dye.

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