公开(公告)号：US5693206A

公开(公告)日：1997-12-02

申请号：US665458

申请日：1996-06-18

申请人： Adrien Castegnier ,  Normand Lepine ,  Gilles Gadbois ,  Christian Laplante

发明人： Adrien Castegnier ,  Normand Lepine ,  Gilles Gadbois ,  Christian Laplante

IPC分类号： B41C1/10 ,  B41L19/00

CPC分类号： B41C1/105 ,  Y10S101/37

摘要： An electrocoagulation printing apparatus comprises a positive cylindrical electrode having a central longitudinal axis extending horizontally and a passivated surface defining a positive electrode active surface, the positive electrode being formed of an electrolytically inert metal; a drive mechanism for rotating the positive electrode about the longitudinal axis thereof at a substantially constant speed; a coating device for coating the positive electrode active surface with an olefinic substance and a metal oxide to form on the surface micro-droplets of olefinic substance containing the metal oxide; and a printing head for forming on the olefin and metal oxide-coated positive electrode active surface a plurality of dots of colored, coagulated colloid by electrocoagulation of an electrolytically coagulable colloid in the presence of a coloring agent, the dots of colored, coagulated colloid being representative of a desired image. The apparatus of the invention further comprises a transfer device for bringing a substrate into contact with the dots of colored, coagulated colloid to cause transfer of the colored, coagulated colloid from the positive electrode active surface onto the substrate and thereby imprint the substrate with the image; and a cleaning device for cleaning the positive electrode active surface to remove therefrom any remaining coagulated colloid, the cleaning device being disposed under the positive electrode and below the coating device. Such an apparatus is capable of printing images of high definition.

摘要翻译： 一种电凝式印刷装置，其特征在于，包括具有中心纵轴水平延伸的正圆柱形电极和限定正电极活性表面的钝化表面，所述正电极由电解惰性金属形成; 驱动机构，用于以基本恒定的速度绕其纵轴旋转正极; 涂覆装置，用于在烯属物质和金属氧化物上涂覆正极活性表面，以在含有金属氧化物的烯烃物质的表面微滴上形成; 以及用于在着色剂存在下通过电解凝结胶体电凝而在烯烃和金属氧化物涂覆的正极活性表面上形成多个着色的凝固胶体点的打印头，着色的凝固胶体的点为 代表所需图像。 本发明的装置还包括用于使基底与着色的凝结胶体的点接触的转移装置，以使着色的凝固胶体从正极活性表面转移到基底上，从而用图像印刷基底 ; 以及用于清洁正极活性表面以除去其中任何剩余的凝结胶体的清洁装置，该清洁装置设置在正极下方和涂覆装置下方。 这种装置能够打印高分辨率的图像。

公开(公告)号：US5863402A

公开(公告)日：1999-01-26

申请号：US925778

申请日：1997-09-09

申请人： Adrien Castegnier ,  Normand Lepine

发明人： Adrien Castegnier ,  Normand Lepine

IPC分类号： B41C1/10 ,  C25D13/04

CPC分类号： B41C1/105

摘要： An electrocoagulation printing method comprises the steps of (a) providing a positive electrolytically inert electrode having a continuous passivated surface moving at substantially constant speed along a predetermined path, the passivated surface defining a positive electrode active surface; (b) coating the positive electrode active surface with an olefinic substance and silica to form on the surface micro-droplets of olefinic substance containing the silica; (c) forming on the olefin and silica-coated positive electrode active surface a plurality of dots of colored, coagulated colloid representative of a desired image, by electrocoagulation of an electrolytically coagulable colloid present in an electrocoagulation printing ink comprising a liquid colloidal dispersion containing the electrolytically coagulable colloid, a dispersing medium, a soluble electrolyte and a coloring agent; and (d) bringing a substrate into contact with the olefin and silica-coated positive electrode active surface to cause transfer of the dots of colored, coagulated colloid from the surface onto the substrate and thereby imprint the substrate with the image. The use in step (b) of silica prevents abrasion and pitting of the positive electrode, without substantially affecting passivation. The use of silica also prevents the formation of undesirable background on the printed image in step (d).

摘要翻译： 电凝印刷方法包括以下步骤：（a）提供正电解惰性电极，其具有以预定路径以基本恒定速度移动的连续钝化表面，所述钝化表面限定正极活性表面; （b）用烯烃物质和二氧化硅涂覆正极活性表面，在表面上形成含有二氧化硅的烯烃物质的微滴; （c）在所述烯烃和二氧化硅包被的正极活性表面上形成代表所需图像的多个着色凝固胶体点，通过电凝凝电凝凝印刷油墨中的电解凝固性胶体，所述胶体包含含有 电解凝固胶体，分散介质，可溶性电解质和着色剂; 和（d）使基材与烯烃和二氧化硅涂覆的正极活性表面接触，以使着色的凝结胶体的点从表面转移到基材上，从而用图像印刷基材。 二氧化硅步骤（b）中的使用防止了正极的磨损和点蚀，而基本上不影响钝化。 二氧化硅的使用也防止在步骤（d）中在印刷图像上形成不期望的背景。

公开(公告)号：US5750593A

公开(公告)日：1998-05-12

申请号：US376245

申请日：1995-01-23

申请人： Adrien Castegnier ,  Normand Lepine

发明人： Adrien Castegnier ,  Normand Lepine

IPC分类号： C09D11/02 ,  C09D11/10

CPC分类号： C09D11/107 ,  C09D11/02 ,  Y10S260/38

摘要： A stabilized electrocoagulation printing ink comprises a liquid colloidal dispersion containing an electrolytically coagulable colloid, a dispersing medium, a soluble electrolyte, a coloring agent and a sequestering agent for completing metal ions generated during electrocoagulation printing. The sequestering agent is present in an amount to prevent the metal ions from causing the colloid to undergo undesirable cross-linking, without adversely affecting electrocoagulation of the colloid.

摘要翻译： 稳定化的电凝印刷油墨包括含有电解凝结胶体，分散介质，可溶性电解质，着色剂和螯合剂的液体胶态分散体，用于完成在电凝期间产生的金属离子。 螯合剂的存在量是为了防止金属离子引起胶体发生不希望的交联，而不会不利地影响胶体的电凝。

公开(公告)号：US06288140B1

公开(公告)日：2001-09-11

申请号：US09430018

申请日：1999-10-29

申请人： Adrien Castegnier ,  Normand Lepine

发明人： Adrien Castegnier ,  Normand Lepine

IPC分类号： C08L3302

CPC分类号： C09D11/102

摘要： An electrocoagulation printing ink consisting essentially of a liquid colloidal dispersion containing an electrolytically coagulable colloid, a dispersing medium, a soluble electrolyte and a coloring agent, is improved by selecting as the colloid an anionic copolymer of acrylamide and acrylic acid having a weight average molecular weight of about 200,000 to about 400,000 and containing about 8 to about 15 weight % of carboxyl groups. The ink is free of surfactant associated with the copolymer. Such an ink is capable of forming dots of coagulated colloid which are resistant to abrasion, without producing undesirable background on the electrocoagulation printed images.

摘要翻译： 通过选择具有重均分子量的丙烯酰胺和丙烯酸的阴离子共聚物作为胶体来改进基本上由含有可电解凝胶胶体，分散介质，可溶性电解质和着色剂的液体胶体分散体组成的电凝印迹油墨 约20万至约40万，并含有约8至约15重量％的羧基。 油墨不含与共聚物相关的表面活性剂。 这样的墨水能够形成耐磨损的凝固胶体点，而不会在电凝图像上产生不希望的背景。

公开(公告)号：US5681436A

公开(公告)日：1997-10-28

申请号：US608747

申请日：1996-02-29

申请人： Adrien Castegnier ,  Normand Lepine

发明人： Adrien Castegnier ,  Normand Lepine

IPC分类号： B41C1/10 ,  C25D13/00

CPC分类号： B41C1/105 ,  Y10S101/29

摘要： An improved electrocoagulation printing method comprising the steps of (a) providing a positive electrode formed of an electrolytically inert metal and having a continuous passivated surface moving at substantially constant speed along a predetermined path, the passivated surface defining a positive electrode active surface; (b) forming on the positive electrode active surface a plurality of dots of colored, coagulated colloid representative of a desired image, by electrocoagulation of an electrolytically coagulable colloid present in an electrocoagulation printing ink comprising a liquid colloidal dispersion containing the electrolytically coagulable colloid, a dispersing medium, a soluble electrolyte and a coloring agent; and (c) bringing a substrate into contact with the dots of colored, coagulated colloid to cause transfer of the colored, coagulated colloid from the positive electrode active surface onto the substrate and thereby imprint the substrate with the image. The improvement resides in applying between steps (b) and (c) on the positive electrode active surface a liquid olefinic substance to dislodge any remaining ink from the surface without altering the dots of colored, coagulated colloid, and removing the dislodged ink in admixture with the olefinic substance from the positive electrode active surface, thereby preventing formation of undesirable background on the printed image in step (c).

摘要翻译： 一种改进的电凝印刷方法，包括以下步骤：（a）提供由电解惰性金属形成的正电极，并具有以预定路径以基本上恒定的速度移动的连续钝化表面，钝化表面限定正极活性表面; （b）在正极活性物表面上形成代表所需图像的多个着色凝固胶体点，通过电凝凝电凝凝印刷油墨中的电解凝固性胶体，其包含含有可电解凝结胶体的液体胶态分散体， 分散介质，可溶性电解质和着色剂; 和（c）使基板与着色的凝结胶体的点接触，以使着色的凝结胶体从正极活性表面转移到基板上，从而用图像印刷基板。 改进之处在于在正极活性表面上应用步骤（b）和（c）之间的液体烯烃物质，以从表面上移除任何剩余的油墨，而不改变着色的凝固胶体的点，并且将漂白的油墨与 来自正极活性表面的烯烃物质，从而防止在步骤（c）中在印刷图像上形成不期望的背景。

公开(公告)号：US5928417A

公开(公告)日：1999-07-27

申请号：US922257

申请日：1997-09-02

申请人： Adrien Castegnier ,  Normand Lepine

发明人： Adrien Castegnier ,  Normand Lepine

IPC分类号： C09D11/02 ,  C09D11/10

CPC分类号： C09D11/02

摘要： The shelf-life of an electrocoagulation printing ink consisting essentially of a liquid colloidal dispersion containing an electrolytically coagulable colloid, a dispersing medium, a soluble electrolyte, a pigment and a dispersing agent uniformly dispersing said pigment into the dispersion, is increased by selecting as the dispersing agent an alkali metal salt of a naphthalenesulfonic acid-formaldehyde polycondensate having the general formula: ##STR1## in which R is an alkali metal and n is an integer ranging from about 5 to about 12.

摘要翻译： 基本上由含有电解凝结胶体，分散介质，可溶性电解质，颜料和将所述颜料均匀分散到分散体中的分散剂的液体胶态分散体的电凝印刷油墨的保质期通过选择作为 分散剂是具有以下通式的萘磺酸 - 甲醛缩聚物的碱金属盐：其中R是碱金属，n是约5至约12的整数。