公开(公告)号：US10661581B2

公开(公告)日：2020-05-26

申请号：US16094395

申请日：2017-05-11

申请人： Konica Minolta Inc.

发明人： Takashi Muramatsu ,  Mitsuo Kaburagi ,  Masashi Ikeda

IPC分类号： B41J11/00 ,  B41J13/08

摘要： An ink jet recording apparatus contains a conveyer which conveys a recording medium, the conveyer having conveyance members on which the recording medium is mounted; a recorder which jets ink onto the recording medium being conveyed; and a fixer which fixes the ink landed on the recording medium. The ink is curable by a predetermined energy ray. The fixer irradiates the ink on the recording medium with the predetermined energy ray. The conveyer passes the recording medium for conveyance between the conveyance members and moves the recording medium in respective planes by movement of the conveyance members.

公开(公告)号：US10385227B2

公开(公告)日：2019-08-20

申请号：US15746692

申请日：2016-06-29

申请人： Konica Minolta, Inc.

发明人： Yusuke Takaku ,  Masashi Ikeda ,  Yuka Yazaki ,  Hiromichi Nishiyama

IPC分类号： C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C09D11/40 ,  B41J2/21 ,  C09D11/38 ,  B41M5/00 ,  B41M7/00 ,  C09D11/037 ,  C09D11/101 ,  C09D11/107 ,  C09D11/322 ,  B41J2/515

摘要： Purpose is to provide an inkjet recording method for forming high-quality color image on a thick recording medium having low thermal conductance rate. The present invention is a single-pass inkjet recording method using an ink set including at least two active ray-curing color inks, and a recording medium having thermal conductivity of less than 0.10 W/(m·K) and thickness of 0.4 mm or more. The ink set containing two color inks satisfy only condition (a), and the ink set containing three or more color inks satisfy conditions (a) and (b): (a) most downstream color ink has a gelation temperature which is 3.0° C. to 15.0° C. higher than that of most upstream color ink, and (b) second or subsequent color ink from the most upstream position in conveyance direction has a gelation temperature which is the same as or higher than that of an adjacent color ink at the upstream position.

公开(公告)号：US20150070451A1

公开(公告)日：2015-03-12

申请号：US14394396

申请日：2013-04-30

申请人： Konica Minolta, Inc.

发明人： Masashi Ikeda

IPC分类号： B41J11/00

CPC分类号： B41J11/002 ,  B41J2/155 ,  B41M7/0081 ,  C09D11/101 ,  C09D11/322 ,  C09D11/34 ,  C09D11/38 ,  C09D11/40

摘要： An image-forming method that comprises: a process of discharging a radiation-curable inkjet ink, which contains a photopolymerizable compound, a photopolymerization initiator, and a gelling agent and which undergoes a phase transition depending on the temperature, on a recording medium; and a process of curing the radiation-curable inkjet ink discharged on the recording medium by irradiating active radiation thereon. The method performs the irradiation with the active radiation so that the maximum illuminance at the surface of the recording medium is 2-5 W/cm2 and in the distribution of illuminance in the irradiated region at the surface of the recording medium in the direction of recording medium conveyance, the half-width of the illuminance is 20 mm or more. Using said image-forming method, productivity is high and images with excellent gloss homogeneity, surface curability and abrasion properties can be formed.

摘要翻译： 一种图像形成方法，包括：在记录介质上排放包含可光聚合化合物，光聚合引发剂和胶凝剂并根据温度进行相变的可辐射固化喷墨油墨的过程; 以及通过在其上照射活性辐射来固化在记录介质上排出的可辐射固化喷墨油墨的方法。 该方法用有源辐射进行照射，使得记录介质表面的最大照度为2-5W / cm 2，并且在记录方向的记录介质表面的照射区域中的照度分布 介质输送时，照度的半宽度为20mm以上。 使用所述图像形成方法，生产率高，并且可以形成具有优异光泽均匀性，表面固化性和磨损性能的图像。

公开(公告)号：US20200215828A1

公开(公告)日：2020-07-09

申请号：US16692399

申请日：2019-11-22

申请人： Konica Minolta, Inc.

发明人： Shogo Watanabe ,  Go Yamaguchi ,  Masashi Ikeda

IPC分类号： B41J11/00

摘要： An image forming method includes: discharging an inkjet actinic ray curable white ink containing an actinic ray polymerizable compound, a gelling agent, and titanium oxide from a nozzle of an inkjet head to attach the inkjet actinic ray curable white ink to a surface of a recording medium; irradiating the inkjet actinic ray curable white ink attached to the surface of the recording medium with an actinic ray to cure the inkjet actinic ray curable white ink; discharging an inkjet actinic ray curable ink containing an actinic ray polymerizable compound from a nozzle to attach the inkjet actinic ray curable ink to a surface of a white cured film obtained by curing the inkjet actinic ray curable white ink; and irradiating the inkjet actinic ray curable ink attached to the surface of the white cured film with an actinic ray to cure the inkjet actinic ray curable ink.

公开(公告)号：US10072169B2

公开(公告)日：2018-09-11

申请号：US15549865

申请日：2016-02-02

申请人： Konica Minolta, Inc.

发明人： Masashi Ikeda

IPC分类号： B41J11/00 ,  C09D11/101 ,  C09D11/322 ,  C09D11/38 ,  C09D11/30 ,  C09D11/54

CPC分类号： C09D11/38 ,  B41J2/01 ,  B41J11/002 ,  B41M5/00 ,  C09D11/101 ,  C09D11/12 ,  C09D11/30 ,  C09D11/322 ,  C09D11/34 ,  C09D11/54

摘要： The purpose of the present invention is to provide an active ray-curable inkjet ink capable of further enhancing gloss uniformity, surface curability, and scratch resistance of a formed image. The purpose is achieved by an active ray-curable inkjet ink containing a polymerization initiator, a photopolymerizable compound, and a gelling agent, and that undergoes a reversible sol-gel phase transition by temperature change. The inkjet ink contains a polymerization initiator with a molecular weight of 360 or more, and a polyfunctional photopolymerizable compound. The inkjet ink contains 3.0 mass % or more and less than 8.0 mass % of the polymerization initiator with a molecular weight of 360 or more, 1.0 mass % or more and less than 5.0 mass % of the gelling agent, less than 0.1 mass % of the initiator with a molecular weight of 360 or more, and less than 5.0 mass % of the monofunctional photopolymerizable compound.

公开(公告)号：US09840086B2

公开(公告)日：2017-12-12

申请号：US15122692

申请日：2015-03-13

申请人： Konica Minolta, Inc.

发明人： Masashi Ikeda

IPC分类号： B41J2/19 ,  B41J2/175 ,  C09D11/101 ,  C09D11/12 ,  C09D11/322 ,  B41M7/00

CPC分类号： B41J2/19 ,  B41J2/175 ,  B41M7/0081 ,  C09D11/101 ,  C09D11/12 ,  C09D11/322

摘要： The present invention addresses the problem of providing an ink-jet recording method with which it is possible to sufficiently remove air bubbles contained in an actinic-ray-curable ink-jet ink and to heighten the delivery stability and curability of the ink. The ink-jet recording method employs an actinic-ray-curable ink-jet ink which comprises a colorant, a photopolymerization initiator, and a photopolymerizable compound. The ink-jet recording method comprises: a step in which the ink-jet ink is introduced into a depressurized space within an ink-jet recorder and deaerated at an ink temperature which is 50° C. or higher but lower than 120° C.; a step in which droplets of the deaerated ink-jet ink are ejected from the recording head and delivered to a recording medium; and a step in which the ink droplets delivered to the recording medium are irradiated with actinic rays to cure the ink droplets.

公开(公告)号：US09528013B2

公开(公告)日：2016-12-27

申请号：US14915040

申请日：2014-09-09

申请人： Konica Minolta, Inc.

发明人： Toshiyuki Takabayashi ,  Masashi Ikeda

IPC分类号： B41J2/01 ,  C09D11/101 ,  C09D11/107 ,  C09D11/30 ,  C09D11/38 ,  B41J2/165 ,  B41J11/00

CPC分类号： C09D11/101 ,  B41J2/01 ,  B41J2/165 ,  B41J2/16585 ,  B41J11/002 ,  C09D11/107 ,  C09D11/30 ,  C09D11/38

摘要： Disclosed herein are an active energy ray-curable ink-jet ink that is excellent in ejection stability and does not undergo a local thermal polymerization reaction, and an image forming method using the same. The active energy ray-curable ink-jet ink is an actinic radiation-curable ink-jet ink that undergoes temperature-dependent reversible sol-gel phase transition, comprising a photopolymerizable compound, a photoinitiator, and a gelling agent, wherein the photopolymerizable compound comprises one or more combinations of: a compound A that has n (n is an integer of 2 or more) (meth)acrylate ester units, is represented by the following formula, and has a molecular weight in a range of 280 to 1500; and a compound B that has n−1 (meth)acrylate ester units and a hydroxyl group, is represented by the following formula, and has a molecular weight in a range of 280 to 1500, (wherein n is an integer of 2 or more, R is an n-valent branched or unbranched linear or cyclic hydrocarbon group that optionally contains an oxygen atom or a nitrogen atom, and n and R in both the compounds A and B are the same integer and the same structure, respectively), in at least one of the combinations of the compound A and the compound B, an amount of the compound B contained is 5 to 15 mass % of a total mass of the compound A as a counterpart of the compound B, an amount of the gelling agent contained is 0.5 to 7.0 mass % of a total mass of the ink, and a gelling temperature of the ink is 50° C. or more.

摘要翻译： 本文公开了喷射稳定性优异且不进行局部热聚合反应的活性能量射线固化型喷墨油墨，以及使用其的图像形成方法。 活性能量射线固化喷墨油墨是经过温度依赖性可逆溶胶 - 凝胶相变的光化辐射固化喷墨油墨，其包含可光聚合化合物，光引发剂和胶凝剂，其中光聚合化合物包括 具有n（n为2以上的整数）（甲基）丙烯酸酯单元的化合物A的一种或多种组合由下式表示，分子量为280〜1500; 和具有n-1（甲基）丙烯酸酯单元和羟基的化合物B由下式表示，分子量在280至1500的范围内（其中n是2或更大的整数） R是任选含有氧原子或氮原子的n价支链或非支链的直链或环状烃基，化合物A和B中的n和R分别相同的整数和相同的结构），在 化合物A和化合物B的组合中的至少一种，化合物B的含量相对于化合物B的配合物的化合物A的总质量的5〜15质量％，胶凝剂的量 含量为油墨总质量的0.5〜7.0质量％，油墨的凝胶化温度为50℃以上。

公开(公告)号：US09382434B2

公开(公告)日：2016-07-05

申请号：US14366471

申请日：2012-12-19

申请人： Konica Minolta, Inc.

发明人： Masashi Ikeda ,  Satoshi Masumi ,  Toshiyuki Takabayashi

IPC分类号： B41J2/21 ,  C09D11/107 ,  C09D11/101 ,  C09D11/30 ,  B41M7/00

CPC分类号： C09D11/107 ,  B41J2/2107 ,  B41M7/0081 ,  C09D11/101 ,  C09D11/30

摘要： Provided is an actinic radiation-curable inkjet ink that undergoes sol-gel phase transfer and contains a dye, a gelling agent, a photopolymerization compound and a photopolymerization initiator. The actinic radiation-curable inkjet ink includes a photopolymerizable compound A, which is a (meth)acrylate having hydroxyl groups; a photopolymerizable compound B, which is a (meth)acrylate compound having a molecular weight within a range of 300 to 1,500 and an intramolecular structure (—CH2—CH2—O—)m (where m is an integer between 3 and 14); and a (meth)acrylate compound C, which has a molecular weight within a range of 280 to 1,500 and a C log P value within a range of 4 to 7. The ink contains, in terms of the mass of the entire ink, 1 to 15 mass % of photopolymerizable compound A, 30 to 70 mass % of photopolymerizable compound B, 10 to 40 mass % of photopolymerizable compound C, and 2 to 10 mass % of gelling agent.

摘要翻译： 提供经过溶胶 - 凝胶相转移并含有染料，胶凝剂，光聚合化合物和光聚合引发剂的光化辐射固化喷墨油墨。 光化性可辐射固化喷墨油墨包括具有羟基的（甲基）丙烯酸酯的光聚合性化合物A; 作为分子量在300〜1500的分子结构（-CH 2 -CH 2 -O - ）m（m为3〜14的整数）的（甲基）丙烯酸酯化合物的光聚合性化合物B， 和（甲基）丙烯酸酯化合物C，其分子量在280至1,500的范围内，并且C log P值在4至7的范围内。根据整个油墨的质量，包含1 〜15质量％的光聚合性化合物A，30〜70质量％的光聚合性化合物B，10〜40质量％的光聚合性化合物C和2〜10质量％的胶凝剂。

公开(公告)号：US20150015648A1

公开(公告)日：2015-01-15

申请号：US14366471

申请日：2012-12-19

申请人： Konica Minolta, Inc.

发明人： Masashi Ikeda ,  Satoshi Masumi ,  Toshiyuki Takabayashi

IPC分类号： C09D11/107 ,  C09D11/30

CPC分类号： C09D11/107 ,  B41J2/2107 ,  B41M7/0081 ,  C09D11/101 ,  C09D11/30

摘要： Provided is an actinic radiation-curable inkjet ink that undergoes sol-gel phase transfer and contains a dye, a gelling agent, a photopolymerization compound and a photopolymerization initiator. The actinic radiation-curable inkjet ink comprises a photopolymerizable compound A, which is a (meth)acrylate having hydroxyl groups; a photopolymerizable compound B, which is a (meth)acrylate compound having a molecular weight within a range of 300 to 1,500 and an intramolecular structure (—CH2—CH2—O—)m (where m is an integer between 3 and 14); and a (meth)acrylate compound C, which has a molecular weight within a range of 280 to 1,500 and a ClogP value within a range of 4 to 7. The ink contains, in terms of the mass of the entire ink, 1 to 15 mass % of photopolymerizable compound A, 30 to 70 mass % of photopolymerizable compound B, 10 to 40 mass % of photopolymerizable compound C, and 2 to 10 mass % of gelling agent.

摘要翻译： 提供经过溶胶 - 凝胶相转移并含有染料，胶凝剂，光聚合化合物和光聚合引发剂的光化辐射固化喷墨油墨。 光化性可辐射固化喷墨油墨包括具有羟基的（甲基）丙烯酸酯的可光聚合化合物A; 作为分子量在300〜1500的分子结构（-CH 2 -CH 2 -O - ）m（m为3〜14的整数）的（甲基）丙烯酸酯化合物的光聚合性化合物B， 和（甲基）丙烯酸酯化合物C，其分子量在280至1,500的范围内，ClogP值在4至7的范围内。根据油墨的整体质量，包含1至15 光聚合性化合物A的质量％，光聚合性化合物B为30〜70质量％，光聚合性化合物C为10〜40质量％，胶凝剂为2〜10质量％。

公开(公告)号：US09656473B2

公开(公告)日：2017-05-23

申请号：US14911635

申请日：2014-08-14

申请人： Konica Minolta, Inc.

发明人： Masashi Ikeda ,  Hirotaka Iijima ,  Toshiyuki Takabayashi

IPC分类号： B41J2/19 ,  B41J2/175 ,  C09D11/101 ,  C09D11/12 ,  C09D11/38 ,  C09D11/40 ,  C09D11/30 ,  C09D133/08

CPC分类号： B41J2/19 ,  B41J2/175 ,  C09D11/101 ,  C09D11/12 ,  C09D11/30 ,  C09D11/38 ,  C09D11/40 ,  C09D133/08

摘要： The purpose of the present invention is to provide an inkjet ink degassing method that can sufficiently remove bubbles contained in active ray curable inkjet ink and improve dispensing stability and curability. The inkjet ink degassing method according to the present invention comprises a step of using hollow fibers to degas active ray curable inkjet ink that has been heated to between 60° C. and 120° C. and contains a colorant, a photopolymerizable compound, and a photoinitiator.