US 2014/0063127 A1 UMEBAYASH (43) Pub
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US 2014006.3127A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2014/0063127 A1 UMEBAYASH (43) Pub. Date: Mar. 6, 2014 (54) INKJET INK COMPOSITION AND METHOD (30) Foreign Application Priority Data FOR PRODUCING THE SAME, INKJET RECORDING METHOD, PIGMENT Aug. 29, 2012 (JP) ................................. 2012-1890.65 DISPERSION FOR INKJET INKAND Publication Classification METHOD FOR PRODUCING THE SAME (51) Int. Cl. (71) Applicant: FUJIFILM CORPORATION, Tokyo C09D II/00 (2006.01) (JP) (52) U.S. Cl. (72) Inventor: Tsutomu UMEBAYASHI, Kanagawa CPC ...................................... C09D 1 1/38 (2013.01) (JP) USPC ............... 347/56; 106/31.75:522/33:522/64 (57) ABSTRACT An inkjet ink composition includes (component A) C.I. Pig (73) Assignee: FUJIFILM CORPORATION, Tokyo ment Yellow 180, (component B) a fatty acid amide com (JP) pound, and (component C) a high molecular weight dispers ant. The method of producing an inkjet ink composition (21) Appl. No.: 14/011,578 includes preliminary mixing (component A) C.I. Pigment Yellow 180 and (component B) a fatty acid amide compound to obtain a mixture, and mixing the mixture and (component (22) Filed: Aug. 27, 2013 C) a high molecular weight dispersant. US 2014/00631.27 A1 Mar. 6, 2014 NKUET INK COMPOSITION AND METHOD 0010 <1> An inkjet ink composition includes C.I. Pig FOR PRODUCING THE SAME, INKJET ment Yellow 180, a fatty acid amide compound, and a high RECORDING METHOD, PIGMENT molecular weight dispersant. DISPERSION FOR INKJET INKAND 0011 <2> The inkjet ink composition according to <1> in METHOD FOR PRODUCING THE SAME which the fatty acid amide compound is a compound repre sented by the following formula (B) below, BACKGROUND OF THE INVENTION 0001 1. Field of the Invention Chem. 1 0002 The present invention relates to an inkjet ink com (B) position and a method for producing the same, an inkjet O recording method, a pigment dispersion and a method for producing the same. ls 0003 2. Description of the Related Art RB NH2 0004 Inkjet systems ejecting an ink composition as drop lets from ink ejection ports are widely used in many printers in the formula (B), R represents a saturated or unsaturated for reasons such as being compact and inexpensive, and aliphatic group having 5 to 30 carbon atoms.) enabling image forming on a recording medium without con 0012 <3> The inkjet ink composition according to <1> or tact. Also among these inkjet systems, a piezo inkjet system <2> in which the fatty acid amide compound is an oleamide. using the deformation of a piezoelectric element to eject ink 0013 <4> The inkjet ink composition according to any and a thermal inkjet system using a phenomenon of boiling of one of <1> to <3> in which the value of W/W is 0.05 to 0.2 the ink composition by thermal energy to eject the ink com in a case where the content of the C.I. Pigment Yellow 180 is position as droplets have high resolution and excellent high set to W and the content of the fatty acid amide compound is speed printing characteristics. set to W, in the ink composition 0005. Here, over several years, there has been develop 0014) <5> The inkjet ink composition according to any ment of commercial printing and industrial printing using one of <1> to <4>, further containing a solvent. inkjet printers, without being limited to photo printing or 00.15 <6>The inkjet ink composition according to <5>, in document printing for domestic use or office use. In particu which the solvent includes at least one compound selected lar, the demand for wide-format inkjet printers suitable to from a group consisting of alkylene glycol monoalkyl ether printing large advertisements pasted in a show window or on acetates, alkylene glycol monoalkyl ethers, alkylene glycol the walls of a building, and the like, is expanding rapidly. dialkyl ethers, alkylene glycol acetates, polyalkylene glycol Large advertisements are often used, mainly outside, and monoalkyl ether acetates, polyalkylene glycol monoalkyl because long-term weather resistance is demanded, polyvinyl ethers, polyalkylene glycol dialkyl ethers, polyalkylene gly chloride and the like is widely used as the material, and an col acetates, ketones, and lactones aZo-based pigment having an azo skeleton (mainly used for 0016 <7> The inkjet ink composition according to <5> or yellow), a quinacridone-based pigment (mainly used for <6>, in which the solvent includes at least one compound magenta), a copper phthalocyanine-based pigment (mainly selected from a group consisting of ethylene glycol monobu used for cyan), and carbon black (mainly used for black) and tyl ether acetate, diethylene glycol diethyl ether, cyclohex the like, all having excellent weather resistance (resistance anone, and, Y-butyrolactone. with respect to light, rain, or wind), are widely used as the 0017 <8> The inkjet ink composition according to any pigment. one of <1> to <7>, further containing a polymerization ini 0006. In addition, in order to perform full color printing, tiator and a polymerizable compound. an inkjet ink set is used in which four colors, obtained by 0018 <9>The inkjet ink composition according to <8>, in adding black ink to the three primary colors, yellow, magenta, which a content ratio of the polymerizable compound with and cyan, of ink in the Subtractive color process, are com respect to the solvent in the ink composition (content of bined. polymerizable compound/content of Solvent; mass ratio) is 0007 For example, ink compositions disclosed in JP2004 0.1 to 0.2. 2528A, WO2009/098509A, JP2012-72401A, JP2011 0019 <10> A method for producing an inkjet ink compo 126881A, and JP2005-325279A are known as ink composi sition according to any one of <1> to <9>, the method includ tions. In addition, thermal transfer sheets disclosed in ing: preliminary mixing the C.I. Pigment Yellow 180 and the JP1997-272265A (JP-H09-272265A) are known of the fatty acid amide compound to obtain a mixture, and mixing related art. the mixture and the high molecular weight dispersant. 0020 <11 > An inkjet recording method including: eject SUMMARY OF THE INVENTION ing an ink composition on a recording medium; fixing the ink composition by adding heat to the ejected ink composition 0008. An object of the present invention is to provide an and/or curing the ink composition by irradiating the ejected inkjet ink composition able to obtain a printed matter with ink composition with active radiation, and the ink composi excellent weather resistance and a method for producing the tion is the inkjet ink composition according to any one of <1 > same, an inkjet recording method, a pigment dispersion for an to <8>. inkjet ink composition and a method of producing the same. 0021 <12> A pigment dispersion for an inkjet ink com 0009. The problems of the present invention are solved by position including: C.I. Pigment Yellow 180; a fatty acid the inkjet ink composition and the method of producing an amide compound; and a high molecular weight dispersant. inkjet composition. Preferable embodiments of the inkjet ink 0022 <13> A method for producing a pigment dispersion composition will also be described below. for an inkjet ink composition according to <12>. the method US 2014/00631.27 A1 Mar. 6, 2014 including: preliminary mixing the C.I. Pigment Yellow 180 composition by irradiation thereof, and widely encompasses and the fatty acid amide compound to obtain a mixture, and C-rays, Y-rays, X-rays, ultraviolet rays (UV), visible light mixing the mixture and the high molecular weight dispersant. rays, electron beams and the like; however, among these, 0023. According to the present invention, it is possible to ultraviolet rays and electron beams are preferable from the provide an inkjet ink composition able to obtain a printed viewpoint of curing sensitivity and device availability, and matter with excellent weather resistance, and a method of ultraviolet rays are particularly preferable. Accordingly, an producing the same, an inkjet recording method, a pigment ink composition curable by irradiating ultraviolet rays as the dispersion for an inkjet ink composition and a method for active radiation is preferable as the ink composition of the producing the same. present invention. 0034. An ink composition of the related art containing C.I. DESCRIPTION OF THE PREFERRED Pigment Yellow 180 has a problem of having poor weather EMBODIMENTS resistance despite having good chromogenic property. 0024 Below, the present invention will be described in 0035 Although the mechanism is unclear, the present detail. inventors discovered as a result of detailed investigation that 0025 Moreover, in the present specification, the descrip it is possible to obtain an inkjet ink compositionable to obtain tion “XX to yy' indicates a range of numerical values includ a printed matter with excellent weather resistance by contain ing XX and yy. In addition, "(component A) C.I. Pigment ing (component A) C.I. Pigment Yellow 180, (component B) Yellow 180' and the like are also simply referred to as “com a fatty acid amide compound, and (component C) a high ponent A’ and the like. molecular weight dispersant. 0026 “(Meth)acrylate' or the like is synonymous with “acrylate and/or methacrylate' or the like, and the same 0036. The ink composition of the present invention can be applies below. Suitably used as an ink composition for outdoor use because 0027. In addition, the terms “mass percent” and “weight of excellent weather resistance, and further can be particu percent are synonymous, and the terms “parts by mass” and larly suitably used as an ink composition for printing large "parts by weight are synonymous. advertisements pasted in a show window, on the wall of a 0028 (Inkjet Ink Composition) building or the like.