JP2010228392A - Ink-jet recording medium - Google Patents
Ink-jet recording medium Download PDFInfo
- Publication number
- JP2010228392A JP2010228392A JP2009080654A JP2009080654A JP2010228392A JP 2010228392 A JP2010228392 A JP 2010228392A JP 2009080654 A JP2009080654 A JP 2009080654A JP 2009080654 A JP2009080654 A JP 2009080654A JP 2010228392 A JP2010228392 A JP 2010228392A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- ink
- receiving layer
- recording medium
- jet recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 69
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 49
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 49
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- 238000000034 method Methods 0.000 claims abstract description 32
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- 238000001556 precipitation Methods 0.000 abstract 1
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
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- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
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- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
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- BTOVVHWKPVSLBI-UHFFFAOYSA-N 2-methylprop-1-enylbenzene Chemical compound CC(C)=CC1=CC=CC=C1 BTOVVHWKPVSLBI-UHFFFAOYSA-N 0.000 description 1
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- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
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- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
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- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Description
本発明はオフセット印刷用塗工紙の風合いを持つインクジェット記録媒体に関する。 The present invention relates to an inkjet recording medium having a texture of coated paper for offset printing.
インクジェット記録方式は、フルカラー化が容易なことや印字騒音が少ない事などから、印字性能の急速な向上に伴って多くの用途に利用されてきている。これらの用途として、例えば、文書作成ソフトからの文書記録、デジタル写真などのデジタル画像の記録、銀塩写真や本などの美麗な印刷体をスキャナーで取り込んでの複製、比較的少枚数のポスターなどの展示用画像作成が挙げられる。また、これらの用途毎に適した構成のインクジェット記録媒体が提案されており、例えば、単に文字を記録する場合は、紙上に直接記録する普通紙タイプの媒体が使用され、高い解像度と色再現性を得たい場合は、塗工層としてインク受容層を設けた塗工紙タイプが使用される。特に、銀塩写真に匹敵するような高い光沢度が要求される場合は、塗工タイプの塗工層をキャスト方式で形成したキャスト紙タイプなどが使用される。 The ink jet recording system has been used in many applications along with the rapid improvement in printing performance because it is easy to achieve full color and has low printing noise. These applications include, for example, document recording from document creation software, digital image recording such as digital photographs, reproduction of beautiful printed materials such as silver halide photographs and books, and relatively small number of posters. Creation of images for exhibition. In addition, inkjet recording media having a configuration suitable for each application have been proposed. For example, when simply recording characters, a plain paper type medium that is directly recorded on paper is used, and high resolution and color reproducibility are used. When it is desired to obtain the coating paper, a coated paper type provided with an ink receiving layer as the coating layer is used. In particular, when a high gloss level comparable to a silver salt photograph is required, a cast paper type in which a coating type coating layer is formed by a cast method is used.
インクジェット記録方式の種々の分野への展開の一つとして、印刷分野が挙げられる。従来この分野では、主にオフセット方式が用いられてきたが、この印刷方式は版を必要とし、製版、印刷の工程を経るため、印刷物の完成までにはある程度の時間を要する。一方、インクジェット記録方式では、記録媒体に直接、画像を形成するだけで印字物が得られることから非常に効率的であり、安価に印字物を作製可能である。特にコストの面からオフセット印刷には適さない小ロットの印刷物ではインクジェットへの置き換えが進められている。ただし、従来の印刷物の代替となるため、印字物にはオフセット印刷物と同等の風合いが求められる。加えて、オフセット印刷用紙には、印刷物に高級感やインパクトを与えるため、白紙光沢度と印刷部光沢度の差（Δグロス）が大きい用紙が好んで使用される傾向にあり、オフセット印刷用紙を代替するためのインクジェット用紙にも同様の品質が求められている。さらに、近年、フルカラーに対応したインクジェット印刷機の印字スピードの高速化が進んでいるため、これまでの要求品質に加えてインクジェット印字媒体には高速プリンター適性が求められている。ここでいう高速プリンターとは、実用に耐えうる画像をＡ４換算で一分間に１１枚以上（１１ｐｐｍ）印字することができるプリンターを示す。 One of the developments of the ink jet recording system in various fields is the printing field. Conventionally, an offset method has been mainly used in this field. However, this printing method requires a plate and undergoes plate making and printing processes, so that it takes a certain amount of time to complete a printed matter. On the other hand, the ink jet recording method is very efficient because a printed matter can be obtained simply by forming an image directly on a recording medium, and the printed matter can be produced at low cost. In particular, from the viewpoint of cost, replacement with ink jet is being promoted for small-lot printed materials that are not suitable for offset printing. However, since it is an alternative to the conventional printed matter, the printed matter is required to have a texture equivalent to that of the offset printed matter. In addition, offset printing paper tends to be used with a large difference between the glossiness of the blank paper and the gloss of the printing area (Δ gloss) in order to give a high-class feel and impact to the printed matter. Similar quality is also required for inkjet paper for replacement. Furthermore, in recent years, since the printing speed of inkjet printers that support full color has been increased, high-speed printer suitability is required for inkjet printing media in addition to the required quality. The high-speed printer here refers to a printer capable of printing 11 or more (11 ppm) images per minute in A4 conversion, which can be practically used.
ところで、高品質なインクジェット記録画像を印字する場合、画像の色再現性を向上させるに従ってプリンターから吐出されるインク量が多くなるため、インク受容層の設置が必要となり、このインク受容層には十分なインク吸収容量が求められる。このようなことから、インクジェット記録媒体のインク受容層には、従来、合成非晶質シリカなどの多孔性物質が用いられる例が多いが、この場合、インク吸収性は向上するが、光沢度が低く質感もオフセット印刷物と異なるという問題がある。又、インク受容層の光沢度を高めたキャスト紙タイプのインクジェット記録媒体の場合、一般のオフセット印刷用塗工紙と比べて光沢度が非常に高くなり、また用紙が厚手であるため、やはりオフセット印刷物と風合いが異なる。なお、これらのインクジェット記録媒体は高価な原料、例えばシリカ、アルミナ、ポリビニルアルコール、エチレン酢酸ビニルエマルジョン、インク定着剤（ポリアミン系、ＤＡＤＭＡＣ系、ポリアミジン系等）などを多量に用いているため、一般のオフセット印刷用塗工紙に比べ、製造原価が高い。 By the way, when printing a high-quality ink jet recording image, the amount of ink ejected from the printer increases as the color reproducibility of the image increases, so it is necessary to install an ink receiving layer. Ink absorption capacity is required. For this reason, there are many examples in the past where porous materials such as synthetic amorphous silica have been used for the ink receiving layer of an ink jet recording medium. In this case, the ink absorbability is improved, but the glossiness is high. There is a problem that the texture is low and the texture is different from the offset printed matter. In addition, in the case of a cast paper type ink jet recording medium in which the glossiness of the ink receiving layer is increased, the glossiness is very high compared to general coated paper for offset printing, and the paper is thick, so that the offset is also required. The texture is different from the printed material. These ink jet recording media use a large amount of expensive raw materials such as silica, alumina, polyvinyl alcohol, ethylene vinyl acetate emulsion, ink fixing agents (polyamine, DADMAC, polyamidine, etc.) Manufacturing costs are higher than coated paper for offset printing.
一方、塗工層の顔料として安価なカオリンや炭酸カルシウムを含有する、一般的なオフセット印刷用塗工紙にインクジェットプリンターで印字を行うと、塗工層のインク吸収容量が低いためにフェザーリング（滲み）、ブリード（色境界滲み）、ベタ部の印字ムラ（印字部の濃度ムラ）、コックリング（印字部の波打ち）、コスレ（印字部の擦過キズ）、ロール汚れ（印字された画像からプリンター内の紙搬送用ロールへ転写したインクが紙の白紙部へ再転写する現象）といった現象が起きる。 On the other hand, when printing with general inkjet printing paper containing inexpensive kaolin or calcium carbonate as a pigment for the coating layer with an ink jet printer, feathering ( Bleeding, bleeding (color boundary bleeding), solid printing unevenness (printing density unevenness), cockling (printing ripples), scraping (printing scratches), roll stains (printed image to printer Phenomenon in which the ink transferred to the paper transporting roll is retransferred to the white paper portion of the paper) occurs.
これら問題を解決するために、インクと用紙の両方の側面から検討が行われている。例えば、特許文献１には、インク受容層を形成する顔料としてカオリンを９０質量部以上含有し、前記カオリンのうち５〜１５質量部のカオリンの平均粒径が１．５μｍ以上であるインクジェット記録用紙に印字するインクとして、顔料と親水性高分子化合物の割合を６０／４０〜９５／５とするインクジェット用水性顔料インクが提案されている。 In order to solve these problems, studies have been made from both aspects of ink and paper. For example, Patent Document 1 discloses an ink jet recording paper containing 90 parts by mass or more of kaolin as a pigment for forming an ink receiving layer, and an average particle diameter of 5 to 15 parts by mass of kaolin out of the kaolin is 1.5 μm or more. As an ink for printing on an ink jet, an aqueous pigment ink for inkjet in which the ratio of the pigment and the hydrophilic polymer compound is 60/40 to 95/5 has been proposed.
また特許文献２には、風合いが一般コート紙に近いインクジェット記録媒体として、支持体表面にカオリン及び非晶質合成シリカを主に含有する下層のインク受容層と、気相法アルミナを主な顔料とする上層のインク受容層を設けたものが開示されている。 Patent Document 2 discloses an ink jet recording medium having a texture close to that of general coated paper, a lower ink receiving layer mainly containing kaolin and amorphous synthetic silica on the surface of the support, and gas phase method alumina as main pigments. And an upper ink-receiving layer are disclosed.
さらに特許文献３には、顔料インクのみならず染料インクへの適性が優れるインクジェット記録シートにおいて、インク受容層中にシリカ１０〜９０質量％と、炭酸カルシウム及び／またはカオリナイト９０〜１０質量％とを含有することが開示されている。 Further, in Patent Document 3, in an ink jet recording sheet excellent in suitability not only for pigment ink but also for dye ink, 10 to 90% by mass of silica in the ink receiving layer, and 90 to 10% by mass of calcium carbonate and / or kaolinite. Is disclosed.
また、特許文献４には記録層（インク受容層）中に、平均粒子径０．２〜２．０μｍで、かつ１≦Ｌ／Ｗ≦５０（Ｌは粒子の長径、Ｗは粒子の短径（厚み）を表す）を満足する顔料を有し、ＪＩＳ−Ｚ ８７４１による７５°光沢度が４０％以上であるインクジェット記録用塗工紙が開示されている。 Patent Document 4 discloses that the recording layer (ink receiving layer) has an average particle diameter of 0.2 to 2.0 μm and 1 ≦ L / W ≦ 50 (L is the long diameter of the particle and W is the short diameter of the particle). A coated paper for inkjet recording having a pigment satisfying (representing (thickness)) and having a 75 ° gloss of 40% or more according to JIS-Z 8741 is disclosed.
上述したように、安価なカオリンや炭酸カルシウムを含有する一般的なオフセット印刷用塗工紙またはそれに近い風合いを持つインクジェット記録用紙にインクジェット記録を行う試みがなされているが、いずれも充分な印字品質を得られていない。特にオフセット印刷からの代替となるのに必要な高速印刷を実現するためには乾燥性、ロール汚れの改善は急務である。 As mentioned above, attempts have been made to perform ink jet recording on general offset printing coated paper containing inexpensive kaolin and calcium carbonate, or ink jet recording paper having a texture close to it, but all have sufficient print quality. Not got. In particular, in order to realize high-speed printing necessary to substitute for offset printing, it is an urgent need to improve the drying property and roll contamination.
特許文献１に開示された顔料インクは、白紙光沢度が低い記録用紙（マット調のインクジェット記録用紙）に印字する場合はある程度のインク吸収性を持つが充分ではなく、特に白紙光沢度が高めの記録用紙（グロス調のインクジェット記録用紙）に記録する場合においては、必要なインク吸収性を得ることができない。また、特許文献２のインクジェット記録媒体においては、インク受容層を２層にする必要があり高コストとなる。また、特許文献３のインクジェット記録シートにおいてはシリカと炭酸カルシウムおよび／又はカオリンを併用する構成のため、インク吸収性やロール汚れとオフセット印刷用塗工紙並みの光沢度の付与の両立ができず、同様に、特許文献４のインクジェット記録用塗工紙では光沢度はあるもののインク吸収性、ロール汚れが不足するものであった。 The pigment ink disclosed in Patent Document 1 has a certain level of ink absorptivity when printing on a recording paper (matte inkjet recording paper) with a low white paper glossiness, but is not sufficient. When recording on recording paper (glossy ink jet recording paper), the required ink absorbability cannot be obtained. In addition, in the ink jet recording medium of Patent Document 2, it is necessary to provide two ink receiving layers, resulting in high cost. In addition, since the ink jet recording sheet of Patent Document 3 has a configuration in which silica and calcium carbonate and / or kaolin are used in combination, it is impossible to achieve both ink absorptivity and roll stain and glossiness equivalent to coated paper for offset printing. Similarly, the inkjet recording coated paper of Patent Document 4 has glossiness but lacks ink absorbability and roll contamination.
従って本発明の目的は、顔料インクでインクジェット記録を行った印字部分の乾燥性（インク吸収性）やロール汚れに優れ、さらに安価なインクジェット記録媒体を提供することにある。 Accordingly, an object of the present invention is to provide an ink jet recording medium which is excellent in dryness (ink absorbability) and roll smearing of a printed portion where ink jet recording is performed with a pigment ink and which is further inexpensive.
本発明者らはインクジェット印刷に適し、オフセット印刷用塗工紙の風合いを得られるインクジェット記録媒体について鋭意検討した結果、インク受容層中の顔料の種類を規定することで上記課題を解決できることを見出した。 As a result of intensive studies on an ink jet recording medium suitable for ink jet printing and capable of providing a texture of coated paper for offset printing, the present inventors have found that the above problem can be solved by defining the type of pigment in the ink receiving layer. It was.
すなわち、本発明のインクジェット記録媒体は、木材パルプを主成分とする原紙の片面又は両面に、沈降法により測定した平均粒子径が０．１５μｍ以上０．５０μｍ未満であり、かつ２．０μｍ以下の粒子が体積基準の積算値で９５％以上を占めるカオリンとコールターカウンター法で測定された平均二次粒子径が４μｍ以上１０μｍ以下である合成非晶質シリカ、及びバインダーを主成分とするインク受容層を有している。 That is, the inkjet recording medium of the present invention has an average particle size measured by a sedimentation method of 0.15 μm or more and less than 0.50 μm on one side or both sides of a base paper mainly composed of wood pulp, and 2.0 μm or less. Ink-receiving layer comprising, as a main component, kaolin whose particles are 95% or more by volume-based integrated value, synthetic amorphous silica having an average secondary particle diameter of 4 μm or more and 10 μm or less measured by a Coulter counter method, and a binder have.
また、前記合成非晶質シリカがゲル法シリカであることが好ましい。 The synthetic amorphous silica is preferably gel silica.
本発明によれば、オフセット印刷用塗工紙の風合いを得られ、顔料インクでインクジェット記録を行った印字部分の乾燥性やロール汚れに優れ、さらに安価なインクジェット記録媒体が得られる。 According to the present invention, a texture of coated paper for offset printing can be obtained, and an inexpensive ink jet recording medium can be obtained which is excellent in dryness and roll smearing of a printed portion where ink jet recording is performed with pigment ink.
以下本発明のインクジェット記録媒体に係る実施形態について説明する。
（原紙）
原紙は木材パルプを主成分とする。原料パルプとして、化学パルプ（針葉樹の晒または未晒クラフトパルプ、広葉樹の晒または未晒クラフトパルプ等）、機械パルプ（グラウンドパルプ、サーモメカニカルパルプ、ケミカルサーモメカニカルパルプ等）、脱墨パルプ等のパルプを単独または任意の割合で混合して使用することができる。
Hereinafter, embodiments of the ink jet recording medium of the present invention will be described.
(Base paper)
The base paper is mainly composed of wood pulp. Pulp such as chemical pulp (coniferous bleached or unbleached kraft pulp, hardwood bleached or unbleached kraft pulp), mechanical pulp (ground pulp, thermomechanical pulp, chemical thermomechanical pulp, etc.), deinked pulp, etc. Can be used alone or in admixture at any ratio.
原紙の抄紙ｐＨは、酸性、中性、アルカリ性のいずれでも良い。また、原紙中の填料量が増えると、紙の不透明度が向上する傾向があるため、紙中に填料を含有させることは好ましい。原紙に占める填料の含有割合は１％以上４０％以下であることが好ましい。填料が１％未満では原紙の平滑性に劣り、均一な塗工を形成することが困難となる。また、４０％以上では紙力が劣り、高速での抄紙が困難になるばかりか、ワイヤー磨耗等が早いなど、抄紙用具の寿命が短くなるといった操業上の問題が大きくなる。填料としては、水和珪酸、ホワイトカーボン、タルク、カオリン、クレー、炭酸カルシウム、酸化チタン、合成樹脂填料等の公知の填料を使用することができる。填料の種類には特に制限はないが、得られる原紙が高い白色度を持つ点でカルシウムが好ましく、また、その形状は高い不透明度を得ることができるウィスカー状であることが好ましい。さらに本発明の原紙には必要に応じて硫酸バンド、サイズ剤、紙力増強剤、歩留まり向上剤、着色剤、染料、消泡剤、ｐＨ調整剤等の助剤を含有しても良い。なお原紙の坪量は特に制限されない。 The papermaking pH of the base paper may be acidic, neutral or alkaline. Further, since the opacity of the paper tends to improve as the amount of the filler in the base paper increases, it is preferable to contain the filler in the paper. The content of the filler in the base paper is preferably 1% or more and 40% or less. If the filler is less than 1%, the smoothness of the base paper is inferior, and it becomes difficult to form a uniform coating. On the other hand, if it is 40% or more, the paper strength is inferior and not only high speed paper making becomes difficult, but also the operational problems such as shortening of the life of the paper making tool such as rapid wear of the wire become serious. As the filler, known fillers such as hydrated silicic acid, white carbon, talc, kaolin, clay, calcium carbonate, titanium oxide, synthetic resin filler and the like can be used. Although there is no restriction | limiting in particular in the kind of filler, Calcium is preferable at the point from which the obtained base paper has high whiteness, and the shape is preferable that it is a whisker shape which can obtain high opacity. Furthermore, the base paper of the present invention may contain auxiliary agents such as a sulfuric acid band, a sizing agent, a paper strength enhancer, a yield improver, a colorant, a dye, an antifoaming agent, and a pH adjuster as necessary. The basis weight of the base paper is not particularly limited.
本発明においては、原紙に嵩高紙を用いることが好ましい。嵩高紙とは、一般用紙よりも低密度（０．５〜０．７ｇ／ｃｍ３程度）な紙であり、パルプスラリーに低密度化薬品を配合する、嵩高填料を配合する等、公知の方法で抄紙して得ることができる。前記低密度化薬品としては、例えば油脂系非イオン性界面活性剤、糖アルコール系非イオン界面活性剤、糖系非イオン界面活性剤、多価アルコールの脂肪酸エステル等の多価アルコール型非イオン界面活性剤、高級アルコール、高級アルコールあるいは高級脂肪酸のエチレンオキサイドまたはプロピレンオキサイド付加物、脂肪酸ポリアミドアミン、飽和脂肪酸モノアミド、脂肪族第4級アンモニウム塩などを低密度化薬品として例示することができるが、特に飽和脂肪酸モノアミドを用いることが好ましい。このような紙としては、特開2005−54331号公報に記載された中性嵩高紙が挙げられる。前記嵩高填料としては、例えば、特開2001−214395号公報に開示された無定型シリケートおよび特開2003−49389号公報に開示された無機微粒子・シリカ複合凝集体粒子を用いることができる。嵩高紙を原紙に用いた場合、同じ坪量の一般紙を用いた場合と比較すると、紙の剛度が高く搬送性に優れる、寸法安定性が高くカール・コックリングが低減できる等の利点がある。 In the present invention, bulky paper is preferably used as the base paper. Bulky paper is a paper having a lower density (about 0.5 to 0.7 g / cm 3 ) than general paper, and is a known method such as blending a low-density chemical in pulp slurry or blending a bulky filler. It can be obtained by making paper. Examples of the densification chemical include polyhydric alcohol-type nonionic surfactants such as oil-based nonionic surfactants, sugar alcohol-based nonionic surfactants, sugar-based nonionic surfactants, and fatty acid esters of polyhydric alcohols. Activators, higher alcohols, higher alcohols or higher fatty acid ethylene oxide or propylene oxide adducts, fatty acid polyamidoamines, saturated fatty acid monoamides, aliphatic quaternary ammonium salts and the like can be exemplified as the reducing agent, particularly Saturated fatty acid monoamides are preferably used. Examples of such paper include neutral bulky paper described in JP-A-2005-54331. As the bulky filler, for example, amorphous silicate disclosed in JP-A-2001-214395 and inorganic fine particle / silica composite aggregate particles disclosed in JP-A-2003-49389 can be used. When bulk paper is used as the base paper, there are advantages such as high paper rigidity and excellent transportability, high dimensional stability and reduced curling and cockling compared to the case of using general paper with the same basis weight. .
本発明の原紙にインク受容層を設ける前に、紙力増強やサイズ性付与などを目的とし、澱粉、ＰＶＡ、サイズ剤などから調成されたサイズプレス液を含浸または塗布しても良い。含浸または塗布を行う方法については特に制限を設けないが、ポンド式サイズプレスに代表される含浸法、あるいはロッドメタリングサイズプレスやゲートロールコーター、ブレードコーターに代表される塗布法で行われることが好ましい。また、該サイズプレス液を含浸、あるいは塗布するときに、本発明の効果を損なわない範囲で、必要に応じて蛍光染料、導電剤、保水剤、耐水化剤、ｐＨ調整剤、消泡剤、潤滑剤、防腐剤、界面活性剤等の助剤を任意の割合で混合することができる。 Before the ink receiving layer is provided on the base paper of the present invention, a size press solution prepared from starch, PVA, sizing agent or the like may be impregnated or applied for the purpose of enhancing paper strength or imparting size. The impregnation or coating method is not particularly limited, but may be performed by an impregnation method typified by a pound-type size press, or an application method typified by a rod metering size press, a gate roll coater, or a blade coater. preferable. Further, when impregnating or applying the size press solution, as long as the effect of the present invention is not impaired, a fluorescent dye, a conductive agent, a water retention agent, a water resistance agent, a pH adjuster, an antifoaming agent, Auxiliaries such as lubricants, preservatives, surfactants and the like can be mixed in an arbitrary ratio.
（インク受容層）
１．インク受容層の顔料
インク受容層の顔料は、沈降法により測定した平均粒子径が０．１５μｍ以上０．５０μｍ未満であり、かつ２．０μｍ以下の粒子が体積基準の積算値で９５％以上を占めるカオリンを含む。カオリンはカオリナイト、ハロイサイト、ディッカイト、ナックライトといったカオリン鉱物を少なくとも１種類以上含む粘土であり、一般的なオフセット印刷用塗工紙に使用される公知のカオリンであればいかなるものを用いて良い。カオリンとしては、例えば、ジョージア産、ブラジル産、中国産等の産地のものや、１級、２級、デラミ等のグレードのものが存在するが、カオリンの産地やグレードはこれらに限定されない。又、１種類または２種類以上のカオリンを混合したものを適宜選択して顔料として使用することができる。
(Ink receiving layer)
1. Pigment of ink receiving layer The pigment of the ink receiving layer has an average particle size of 0.15 μm or more and less than 0.50 μm as measured by a sedimentation method, and particles of 2.0 μm or less have a volume-based integrated value of 95% or more Contains occupying kaolin. Kaolin is a clay containing at least one kind of kaolin mineral such as kaolinite, halloysite, dickite, and nacklite, and any known kaolin used in general coated paper for offset printing may be used. Examples of kaolin include Georgia, Brazil, and China, and grades such as grade 1, grade 2, and delami. However, the kaolin production and grade are not limited to these. Moreover, what mixed 1 type or 2 or more types of kaolin can be selected suitably, and can be used as a pigment.
沈降法による粒度分布の測定は、溶媒中に分散した粒子がストークスの沈降速度式に従って沈降するものと仮定し，沈降速度から粒径分布を求める方法である。沈降法による粒径は、ストークス相当径（ストークス径）と称され、その粒度分布は質量基準である。 The measurement of the particle size distribution by the sedimentation method is a method of obtaining the particle size distribution from the sedimentation speed on the assumption that the particles dispersed in the solvent settle according to the Stokes sedimentation rate equation. The particle diameter obtained by the sedimentation method is called a Stokes equivalent diameter (Stokes diameter), and the particle size distribution is based on mass.
本発明においては、粒度分布の測定方法は、純水中にカオリンを含む試料スラリーを滴下混合して均一分散体としたものをサンプルに用いる。 In the present invention, as a method for measuring the particle size distribution, a sample slurry containing a sample slurry containing kaolin in pure water is dropped and mixed to form a uniform dispersion.
一般的なオフセット印刷用塗工紙等に使用されるカオリンの沈降法による粒度分布は、約０．０５〜２０μｍの範囲に拡がって存在しており、例えばＫＣＳ（イメリス社製カオリンの製品名）の沈降法による粒度分布は０．０５〜１０μｍである。 The particle size distribution by the sedimentation method of kaolin used for general offset printing coated papers and the like is present in a range of about 0.05 to 20 μm. For example, KCS (product name of kaolin made by Imeris) The particle size distribution according to the sedimentation method is 0.05 to 10 μm.
又、一般的なカオリンにおいては、２．０μｍ以下の粒子の重量割合が９０〜１００％のものをコーディング１級品、８０〜８５％のものをコーディング２級品、７０％以下のものをコーディング３級品、５５％以下のものをフィラクレイと規定している。 Moreover, in general kaolin, the weight ratio of particles of 2.0 μm or less is 90 to 100%, the coding grade product is 80 to 85%, the coding grade product is 70% or less coding. Grade 3 products and 55% or less are defined as Philaclay.
本発明者らが鋭意研究した結果、沈降法により測定した平均粒子径が０．１５μｍ以上０．５０μｍ未満であり、かつ２．０μｍ以下の粒子が体積基準の積算値で９５％以上を占めるカオリンを用いると、上記した一般的なカオリンに比べてインク吸収性に優れることが判明した。これは、粒度分布が上記範囲に集中していると、粒度分布の幅が狭く、粒子径が揃っているため、顔料粒子の充填密度が低く、ポーラスで嵩高なインク受容層を形成できるからと考えられる。ポーラスなインク受容層は、顔料の充填状態が密なインク受容層よりもインク吸収性に優れる。 As a result of intensive studies by the present inventors, kaolin whose average particle size measured by the sedimentation method is 0.15 μm or more and less than 0.50 μm and particles of 2.0 μm or less occupy 95% or more by volume-based integrated value. It has been found that the ink absorbability is superior to that of the above-described general kaolin. This is because if the particle size distribution is concentrated in the above range, the width of the particle size distribution is narrow and the particle diameter is uniform, so that the packing density of the pigment particles is low, and a porous and bulky ink receiving layer can be formed. Conceivable. A porous ink-receiving layer is more excellent in ink absorbency than an ink-receiving layer with a densely packed pigment.
一方、上記粒度分布を持つカオリンに代えて、２．０μｍ以下の粒子が体積基準の積算値で９５％未満となる粒度分布を有するカオリンを用いた場合、カオリンの粒度分布がブロードであるため、インク受容層中にカオリンが細密充填され、インク吸収性が低下する。 On the other hand, instead of kaolin having the above particle size distribution, when using kaolin having a particle size distribution in which particles of 2.0 μm or less are less than 95% by volume based integrated value, the particle size distribution of kaolin is broad, The ink receiving layer is finely packed with kaolin, and the ink absorbability is lowered.
また、平均粒子径が０．１５μｍ未満のカオリンを使用した場合、インク受容層が密となるためインク吸収性が低下する。 In addition, when kaolin having an average particle diameter of less than 0.15 μm is used, the ink-receiving layer is dense and ink absorbability is lowered.
また、平均粒子径が０．５０μｍ以上のカオリンを使用した場合、塗工紙表面に形成される細孔の数が少なくなるため、インクの吸収チャンネルが減り、インクの吸収性が劣る。さらに、このような粒子を用いると塗工表面の平滑性が悪化するため、所望の白紙光沢度を得るために強力なカレンダー処理を行わなければならず、塗工層中の空隙が減少してインク吸収性が劣る。 Further, when kaolin having an average particle diameter of 0.50 μm or more is used, the number of pores formed on the coated paper surface is reduced, so that the ink absorption channel is reduced and the ink absorbability is poor. Further, when such particles are used, the smoothness of the coating surface deteriorates, so that a strong calendering treatment must be performed to obtain the desired white paper glossiness, and the voids in the coating layer are reduced. Ink absorbability is poor.
また、インク受容層にはカオリン以外の必須の構成成分として合成非晶質シリカが含まれる。合成非晶質シリカは平均二次粒子径が４μｍ以上１０μｍ以下であるものを用いる。平均二次粒子径が１０μｍを超えると、得られるインクジェット記録媒体の平滑性が無くなり、光沢感が減少してしまう場合がある。また、インクの浸透が過剰となり、発色性が悪化したり、ムラが発生したりする問題が起こる。合成非晶質シリカの平均二次粒子径が４μｍ未満の場合にはインク吸収性が低下したり、印刷時にインク乾燥性やロール汚れが悪化したりする。上述した合成非晶質シリカの平均二次粒子径は、コールターカウンター法で測定することができる。 The ink receiving layer contains synthetic amorphous silica as an essential constituent other than kaolin. As the synthetic amorphous silica, one having an average secondary particle diameter of 4 μm or more and 10 μm or less is used. When the average secondary particle diameter exceeds 10 μm, the smoothness of the resulting ink jet recording medium is lost, and glossiness may be reduced. In addition, the ink permeates excessively, resulting in a problem that the color developability deteriorates or unevenness occurs. When the average secondary particle diameter of the synthetic amorphous silica is less than 4 μm, the ink absorbability is lowered, and the ink drying property and roll stain are deteriorated during printing. The average secondary particle diameter of the synthetic amorphous silica described above can be measured by a Coulter counter method.
本発明で使用される合成非晶質シリカの吸油量については特に制限を設けないが、１５０ｍｌ／１００ｇ以上５００ｍｌ／１００ｇ以下であることが好ましい。吸油量が１５０ｍｌ／１００ｇ未満だと、インク受容層のインクを保持する能力が満足ではなく、印字部の耐擦過性やインク吸収性が劣る場合がある。吸油量が５００ｍｌ／１００ｇを超えると、顔料を分散する際、塗料粘度が増大して塗料の分散性が悪化する場合がある。合成非晶質シリカの吸油量は２００ｍｌ／１００ｇ以上４００ｍｌ／１００ｇ以下であることがより好ましい。なお、吸油量の測定はＪＩＳ−Ｋ ５１０１に定められた方法で行うことができる。 The oil absorption amount of the synthetic amorphous silica used in the present invention is not particularly limited, but is preferably 150 ml / 100 g or more and 500 ml / 100 g or less. If the amount of oil absorption is less than 150 ml / 100 g, the ability of the ink receiving layer to hold ink is not satisfactory, and the scratch resistance and ink absorbability of the printed portion may be inferior. When the oil absorption exceeds 500 ml / 100 g, when the pigment is dispersed, the viscosity of the paint may increase and the dispersibility of the paint may deteriorate. The oil absorption amount of the synthetic amorphous silica is more preferably 200 ml / 100 g or more and 400 ml / 100 g or less. The oil absorption amount can be measured by the method defined in JIS-K 5101.
本発明の合成非晶質シリカはゲル法シリカであることが好ましい。ゲル法シリカとは、ケイ酸ナトリウムと鉱酸（通常は硫酸）の中和反応を酸性のｐＨ領域で進行させることにより一次粒子の成長を抑えた状態で凝集を起こして得られる湿式法合成非晶質シリカ微粒子をいう。ゲル法シリカは沈降法シリカ（ケイ酸ナトリウムと鉱酸の中和反応をアルカリ性のｐＨ領域で進行させて製造）に比較して、凝集後の反応時間が長く、一次粒子間結合が強く、また、細孔容積が大きくなる傾向にある。このためインク吸収性・耐擦過性能に優れ、好ましく用いられる。 The synthetic amorphous silica of the present invention is preferably gel silica. Gel silica is a non-wet method synthesized by agglomeration in a state where primary particle growth is suppressed by a neutralization reaction of sodium silicate and mineral acid (usually sulfuric acid) in an acidic pH region. It refers to crystalline silica fine particles. Compared with precipitated silica (manufactured by proceeding neutralization reaction of sodium silicate and mineral acid in an alkaline pH range), gel method silica has a longer reaction time after agglomeration and strong bond between primary particles. , The pore volume tends to increase. For this reason, it is excellent in ink absorbability and scratch resistance and is preferably used.
なお、本発明においては、上述したインク受容層中のカオリンと合成非晶質シリカの配合割合（質量割合）は９５／５〜５０／５０であることが好ましい。合成非晶質シリカの配合割合が５質量％より少ないと目的とするインク吸収性や耐擦過性の性能が得られ難い。また、シリカの配合割合が多すぎるとインク受容層表面にクラックが発生し、インクの浸透が過剰となり、発色性が悪化したり、ムラが発生したりする問題が起こる可能性がある。さらに合成非晶質シリカの配合割合が５０質量％を越えるとオフセット印刷用紙の風合いから遠ざかる傾向にあるうえに、光沢度の発現性が得られ難くなるため、グロス調の記録用紙を得ることが困難となる。 In the present invention, the blending ratio (mass ratio) of kaolin and synthetic amorphous silica in the ink receiving layer is preferably 95/5 to 50/50. If the blending ratio of the synthetic amorphous silica is less than 5% by mass, it is difficult to obtain the intended ink absorbability and scratch resistance performance. On the other hand, if the silica content is too large, cracks may occur on the surface of the ink receiving layer, resulting in excessive ink permeation, which may cause problems such as deterioration of color developability and unevenness. Furthermore, if the blending ratio of the synthetic amorphous silica exceeds 50% by mass, it tends to move away from the texture of the offset printing paper and it becomes difficult to obtain glossiness, so that it is possible to obtain a glossy recording paper. It becomes difficult.
インク受容層に用いるカオリン及び合成非晶質シリカ以外の無機顔料としては、一般的なオフセット印刷用塗工紙に使用される公知の顔料であればいかなるものも用いて良い。無機顔料として、例えば本発明で使用されるカオリン以外のカオリン、本発明で使用されるシリカ以外のシリカ、重質炭酸カルシウム、軽質炭酸カルシウム、シリカ複合炭酸カルシウム、タルク、上記カオリンを焼成した焼成カオリン、硫酸カルシウム、硫酸バリウム、二酸化チタン、酸化亜鉛、アルミナ、炭酸マグネシウム、酸化マグネシウム、珪酸カルシウム、ベントナイト、ゼオライト、セリサイト及びスメクタイト等の無機顔料の中から１種類ないし２種類以上を適宜選択して使用することができる。これら無機顔料の配合量はインク受容層に用いるカオリン及び合成非晶質シリカの合計に対して１０％質量以下であることが望ましい。 As the inorganic pigment other than kaolin and synthetic amorphous silica used for the ink receiving layer, any known pigment used for general coated paper for offset printing may be used. Examples of inorganic pigments include kaolin other than kaolin used in the present invention, silica other than silica used in the present invention, heavy calcium carbonate, light calcium carbonate, silica composite calcium carbonate, talc, and calcined kaolin obtained by calcining the kaolin. 1 type or 2 types or more are appropriately selected from inorganic pigments such as calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, alumina, magnesium carbonate, magnesium oxide, calcium silicate, bentonite, zeolite, sericite and smectite. Can be used. The blending amount of these inorganic pigments is desirably 10% by mass or less based on the total of kaolin and synthetic amorphous silica used in the ink receiving layer.
本発明においては、インク受容層表面の白紙光沢度を向上させるために、適宜プラスチックピグメント等の有機顔料を含有することができる。有機顔料の配合割合は無機顔料１００質量部に対して０〜４０質量部、より好ましくは０〜３０質量部、更に好ましくは１〜２５質量部配合することができる。有機顔料を全く配合しない場合、本発明におけるマット調インクジェット記録媒体を製造することに関しては問題が無いが、グロス調インクジェット用紙を製造するときには光沢度発現性は十分ではないことがある。特に、本発明で使用する合成非晶質シリカの配合割合に反比例して、インク受容層の光沢度発現性は低下するため、グロス調インクジェット用紙を製造するためには、合成非晶質シリカの配合割合に比例して有機顔料の配合量を増やす必要がある。また、４０質量部より多く配合すると、高温に加熱されたカレンダーを通紙する際に有機顔料が溶融し、金属ロールに貼り付き、裂け、断紙トラブル等が発生する。なお、マット調インクジェット用紙を製造するときの有機顔料の配合量は特に制限されない。 In the present invention, an organic pigment such as a plastic pigment can be appropriately contained in order to improve the white paper glossiness of the ink receiving layer surface. The blending ratio of the organic pigment is 0 to 40 parts by mass, more preferably 0 to 30 parts by mass, and still more preferably 1 to 25 parts by mass with respect to 100 parts by mass of the inorganic pigment. When no organic pigment is blended, there is no problem in producing the matte inkjet recording medium in the present invention, but glossiness may not be sufficient when producing glossy inkjet paper. In particular, the glossiness of the ink receiving layer decreases in inverse proportion to the blending ratio of the synthetic amorphous silica used in the present invention. It is necessary to increase the blending amount of the organic pigment in proportion to the blending ratio. Moreover, when it mixes more than 40 mass parts, when passing the calendar | calender heated at high temperature, an organic pigment will fuse | melt, sticking to a metal roll, a tear, a paper break trouble, etc. generate | occur | produce. In addition, the compounding quantity of the organic pigment when manufacturing the mat-like inkjet paper is not particularly limited.
本発明に用いる有機顔料は、密実型、中空型、または、コア−シェル型等を必要に応じて単独または２種類以上混合して使用することができる。有機顔料の構成重合体成分としては、好ましくは、スチレン及び／または、メチルメタアクリレート等のモノマーを主成分として、必要に応じてこれらと共重合可能な他のモノマーが用いられる。この共重合可能なモノマーとしては、例えば、α−メチルスチレン、クロロスチレン、ジメチルスチレン等のオレフィン系芳香族系モノマー、（メタ）アクリル酸メチル、（メタ）アクリル酸エチル、（メタ）アクリル酸ブチル、（メタ）アクリル酸２−エチルへキシル、（メタ）アクリル酸グリシジル、（メタ）アクリルニトリル等のモノオレフィン系モノマー及び酢酸ビニル等のモノマーがある。また、必要に応じて、例えば、アクリル酸、メタクリル酸、イタコン酸、マレイン酸、フマール酸、クロトン酸等のオレフィン系不飽和カルボン酸モノマー類、ヒドロキシエチル、メタアクリル酸ヒドロキシエチル、アクリル酸ヒドロキシプロピル、メタアクリル酸ヒドロキシプロピル等のオレフィン系不飽和ヒドロキシモノマー類、アクリルアミド、メタアクリルアミド、Ｎ−メチロールアクリルアミド、Ｎ―メチロールメタアクリルアミド、Ｎ―メトキシメチルアクリルアミド等のオレフィン系不飽和アミドモノマー類、ジビニルベンゼン等の二量体ビニルモノマー等を一種または二種以上の組み合わせで用いることができる。これらのモノマーは例であり、このほかにも共重合可能なモノマーがあれば使用することができる。 As the organic pigment used in the present invention, a solid type, a hollow type, a core-shell type, or the like can be used singly or as a mixture of two or more types as necessary. As the constituent polymer component of the organic pigment, a monomer such as styrene and / or methyl methacrylate is preferably used as a main component, and other monomers copolymerizable with these as necessary. Examples of the copolymerizable monomer include olefinic aromatic monomers such as α-methylstyrene, chlorostyrene, and dimethylstyrene, methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate. Monoolefin monomers such as 2-ethylhexyl (meth) acrylate, glycidyl (meth) acrylate, (meth) acrylonitrile, and monomers such as vinyl acetate. If necessary, for example, olefinic unsaturated carboxylic acid monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, hydroxyethyl, hydroxyethyl methacrylate, hydroxypropyl acrylate Olefinic unsaturated hydroxy monomers such as hydroxypropyl methacrylate, acrylamide, methacrylamide, N-methylolacrylamide, N-methylolmethacrylamide, N-methoxymethylacrylamide and other olefinic unsaturated amide monomers, divinylbenzene, etc. These dimer vinyl monomers can be used singly or in combination of two or more. These monomers are examples, and any other copolymerizable monomer can be used.
２．インク受容層のバインダー
インク受容層に用いるバインダーは、一般的なオフセット印刷用塗工紙に使用される公知のバインダーであればいかなるものも用いて良い。バインダーとして、例えば酸化澱粉やエーテル化澱粉、エステル化澱粉等の澱粉類、スチレン・ブタジエン共重合体（ＳＢ）ラテックスやアクリロニトリル・ブタジエン共重合体（ＮＢ）ラテックス等のラテックス類、ポリビニルアルコール及びその変性物、カゼイン、ゼラチン、カルボキシメチルセルロース、ポリウレタン、酢酸ビニル及び不飽和ポリエステル樹脂等のバインダーの中から１種類ないし２種類以上を適宜選択して使用することができるが、調成された塗料の流動性や塗工適性の観点から、ラテックス類ないし澱粉類、またはその混合物用いることが好ましい。
2. Binder for Ink Receiving Layer Any binder may be used as the binder for the ink receiving layer as long as it is a known binder used for general coated paper for offset printing. Examples of binders include starches such as oxidized starch, etherified starch, and esterified starch; latexes such as styrene / butadiene copolymer (SB) latex and acrylonitrile / butadiene copolymer (NB) latex; polyvinyl alcohol and its modification 1 type or 2 or more types can be appropriately selected and used from binders such as products, casein, gelatin, carboxymethylcellulose, polyurethane, vinyl acetate and unsaturated polyester resin. From the viewpoint of coating suitability, latexes or starches, or mixtures thereof are preferably used.
インク受容層に含まれる全ての無機顔料の合計１００質量部に対するバインダーの割合は４質量部以上３５質量部以下であることが好ましい。バインダーの含有量が４質量部未満の場合、インク受容層の強度が不足する傾向にある。一方、バインダーの含有量が３５質量部を超えるとインク受容層中に存在する空隙がバインダーによって満たされ、インクの吸収容量が少なくなるため、良好な印字品質を得ることが困難となる傾向にある。 The ratio of the binder to 100 parts by mass of the total of all inorganic pigments contained in the ink receiving layer is preferably 4 parts by mass or more and 35 parts by mass or less. When the content of the binder is less than 4 parts by mass, the strength of the ink receiving layer tends to be insufficient. On the other hand, when the content of the binder exceeds 35 parts by mass, voids existing in the ink receiving layer are filled with the binder, and the ink absorption capacity is reduced. Therefore, it tends to be difficult to obtain good print quality. .
無機顔料の合計１００質量部に対するバインダーの割合が５質量部以上３０質量部未満であることがさらに好ましい。
（その他の成分）
インク受容層には、その他必要に応じて、顔料分散剤、増粘剤、保水剤、滑剤、消泡剤、抑泡剤、離型剤、発泡剤、着色染料、着色顔料、蛍光染料、防腐剤、耐水化剤、界面活性剤、ｐＨ調整剤等の助剤を適宜添加することができる。
It is more preferable that the ratio of the binder with respect to 100 parts by mass of the inorganic pigment is 5 parts by mass or more and less than 30 parts by mass.
(Other ingredients)
For the ink receiving layer, pigment dispersant, thickener, water retention agent, lubricant, antifoaming agent, foam suppressor, mold release agent, foaming agent, coloring dye, coloring pigment, fluorescent dye, antiseptic, etc. Auxiliaries such as agents, water-resistant agents, surfactants, pH adjusters and the like can be added as appropriate.
（塗料濃度）
インク受容層を形成する塗料の濃度（固形分濃度）は４５質量％以上７０質量％未満であることが好ましい。塗料濃度が４５質量％未満の場合、塗料の保水性が著しく劣るために幅方向の塗工量プロファイルが劣るばかりか、得られる塗工紙の表面が荒れてしまい、光沢発現性に劣るなどの原因によりオフセット印刷用塗工紙の風合いが得られない。また、塗料濃度が７０質量％を超える場合、塗料中の顔料間距離が短く、凝集が起こりやすいため、ストリークなどの塗工欠陥が生じる。
(Paint concentration)
The concentration (solid content concentration) of the coating material forming the ink receiving layer is preferably 45% by mass or more and less than 70% by mass. When the coating concentration is less than 45% by mass, the water retention of the coating is remarkably inferior, so that the coating amount profile in the width direction is inferior, and the surface of the coated paper to be obtained is rough, resulting in inferior gloss development. The texture of coated paper for offset printing cannot be obtained due to the cause. Further, when the coating concentration exceeds 70% by mass, the distance between the pigments in the coating is short and aggregation easily occurs, so that coating defects such as streaks occur.
（塗工量）
インク受容層の塗工量は特に制限を設けないが、片面あたり１ｇ／ｍ２以上４０ｇ／ｍ２未満であることが好ましく、特に片面あたり４ｇ／ｍ２以上３０ｇ／ｍ２未満であることが好ましい。塗工量が多いほどインク受容層の空隙量も多くなるため、インク吸収性が良好となる。インク受容層の塗工量が片面あたり１ｇ／ｍ２未満の場合、基材となる原紙を充分に被覆することができないため、塗工紙表面にガサつきが残り、非塗工紙に似た風合いを帯び、本発明が所望する白紙光沢度を得ることが困難となり、目的としたオフセット印刷用塗工紙の風合いを持つインクジェット記録媒体を得ることができない。また、塗工量が片面あたり１ｇ／ｍ２未満の場合、インク受容層の吸収容量も充分ではないため、フェザーリングやブリードといった印字不良を起こしやすい。一方、インク受容層の塗工量が片面あたり４０ｇ／ｍ２以上となると、塗工時の乾燥負荷が大きいため、作業性が劣り、また高コストとなる。
(Coating amount)
The coating amount of the ink receiving layer is not formed in particular limited, it is less than per one side 1 g / m 2 or more 40 g / m 2 is preferable, and 4g / m 2 or more 30 g / m less than 2 per side preferable. The greater the coating amount, the greater the amount of voids in the ink receiving layer, and the better the ink absorbability. When the coating amount of the ink receiving layer is less than 1 g / m 2 per side, the base paper as a base material cannot be sufficiently coated, and the coated paper surface remains rugged and resembles non-coated paper It becomes difficult to obtain the desired white paper glossiness according to the present invention, and it is impossible to obtain an inkjet recording medium having the texture of the intended coated paper for offset printing. In addition, when the coating amount is less than 1 g / m 2 per side, the ink receiving layer has an insufficient absorption capacity, and printing defects such as feathering and bleeding are likely to occur. On the other hand, when the coating amount of the ink receiving layer is 40 g / m 2 or more per side, the drying load during coating is large, resulting in poor workability and high cost.
（塗工方法）
原紙上にインク受容層を設ける方法としては、一般的な塗工装置である、ブレードコーター、ロールコーター、エアーナイフコーター、バーコーター、ゲートロールコーター、カーテンコーター、グラビアコーター、フレキソグラビアコーター、スプレーコーター、サイズプレス等の各種装置を、オンマシンまたはオフマシンで使用することができる。また、インク受容層は片面ないし両面に設けて良く、１層又は２層以上設けても良い。本発明においてはインク受容層が１層であっても充分な性能が得られるため、コストを下げるという観点から１層のみ設けることが好ましい。
(Coating method)
As a method for providing an ink receiving layer on a base paper, a general coating apparatus, such as a blade coater, roll coater, air knife coater, bar coater, gate roll coater, curtain coater, gravure coater, flexographic gravure coater, spray coater. Various devices such as a size press can be used on-machine or off-machine. Further, the ink receiving layer may be provided on one side or both sides, and one or more layers may be provided. In the present invention, even if there is only one ink receiving layer, sufficient performance can be obtained. Therefore, it is preferable to provide only one layer from the viewpoint of cost reduction.
（白紙光沢度）
インクジェット記録媒体のインク受容層表面のＪＩＳ−Ｚ ８７４１による光入射角７５度の白紙光沢度は特に制限は設けておらず、用途に応じて適宜設定することが出来る。例えば、本発明で製造された用紙にオフセット印刷用グロス調塗工紙の風合いを持たせるためには５５％以上８５％以下であることが好ましく、また同様にオフセット印刷用マット調塗工紙の風合いを持たせるためには２０％以上５５％未満であることが好ましい。
(Blank gloss)
The white paper glossiness at a light incident angle of 75 degrees according to JIS-Z 8741 on the surface of the ink receiving layer of the ink jet recording medium is not particularly limited, and can be appropriately set according to the application. For example, in order to give the paper produced by the present invention the texture of glossy coated paper for offset printing, it is preferably 55% or more and 85% or less. Similarly, the matte coated paper for offset printing is preferably used. In order to give a texture, it is preferably 20% or more and less than 55%.
白紙光沢度はインク受容層を設けた後にマシンカレンダー、スーパーカレンダー、ソフトカレンダー、シューカレンダー等のカレンダー装置を用い、処理温度、処理速度、処理線圧、処理段数およびロールの径、材質等の条件を適宜調整、選択し表面処理することにより得ることができる。また、オフセット印刷用マット調塗工紙の製造に限っては前記カレンダー処理を行わないことにより、目的とする白紙光沢度が得られる場合もある。 For blank paper glossiness, use a calender device such as a machine calendar, super calendar, soft calendar, shoe calender, etc. after providing an ink receiving layer, and conditions such as processing temperature, processing speed, processing line pressure, number of processing steps, roll diameter, material, etc. Can be obtained by appropriately adjusting, selecting and surface-treating. Moreover, the target white paper glossiness may be obtained by not performing the calendar process only for the production of matte coated paper for offset printing.
以下、本発明を実施例によって更に詳述するが、本発明はこれによって限定されるものではない。又、特に断らない限り、以下に記載する「部」及び「％」は、それぞれ「質量部」及び「質量％」を示す。 EXAMPLES Hereinafter, although an Example demonstrates this invention further in full detail, this invention is not limited by this. Unless otherwise specified, “part” and “%” described below represent “part by mass” and “% by mass”, respectively.
（原紙の作製）
広葉樹漂白クラフトパルプ（カナダ標準濾水度：４００ｍｌ）１００％に対し、カチオン化澱粉を対パルプ０．５％添加し、アルキルケテンダイマーを対パルプ０．０５％添加し、硫酸バンドを対パルプ２％添加し、炭酸カルシウムを対パルプ１０％添加し、低密度化薬品として多価アルコールと脂肪酸のエステル化合物（ＫＢ−１１０（花王（株）製））０．３部を添加して紙料とした。この紙料を用いて長網抄紙機で紙匹を形成し、３段のウェットプレスを行い乾燥した後、ゲートロールコーターにて１０質量％濃度の酸化澱粉水溶液を塗布し、再び乾燥した後、坪量８０ｇ／ｍ２、密度０．６５ｇ／ｃｍ３の原紙を得た。
(Preparation of base paper)
To 100% hardwood bleached kraft pulp (Canadian standard freeness: 400 ml), 0.5% cationized starch is added to pulp, 0.05% alkyl ketene dimer is added to pulp, and sulfate band is added to pulp 2. 10% of calcium carbonate is added to the pulp, 0.3 parts of ester compound of polyhydric alcohol and fatty acid (KB-110 (manufactured by Kao Corporation)) is added as a material for reducing the density, and did. Using this paper stock, a paper web was formed on a long paper machine, dried by performing a three-stage wet press, coated with a 10% by weight oxidized starch aqueous solution with a gate roll coater, dried again, A base paper having a basis weight of 80 g / m 2 and a density of 0.65 g / cm 3 was obtained.
[実施例１]
カオリンＡ（製品名：Amazonplus、ＣＡＤＡＭ社製、沈降法による平均粒子径０．２６μｍ、体積基準の積算値で２．０μｍ以下の粒子が占める割合９８．４％）８０部、合成非晶質シリカＡ（製品名：ミズカシルＰ−５０、水澤化学工業社製、平均二次粒子径５．１μｍ、吸油量１７０ｍｌ／１００ｇ）２０部、有機顔料Ａ（変性スチレン系共重合体、製品名：Ｐ８９００、旭化成ケミカルズ社製）２０部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Example 1]
80 parts of kaolin A (product name: Amazonplus, manufactured by CADAM, average particle diameter of 0.26 μm by sedimentation method, ratio of 98.4% of particles less than 2.0 μm by volume-based integrated value), synthetic amorphous silica 20 parts of A (product name: Mizukasil P-50, manufactured by Mizusawa Chemical Industry Co., Ltd., average secondary particle size 5.1 μm, oil absorption 170 ml / 100 g), organic pigment A (modified styrene copolymer, product name: P8900, 20 parts by Asahi Kasei Chemicals), 7 parts SB latex (glass transition temperature 15 ° C.) as a binder, 0.2 parts sodium hydroxide, 0.2 parts sodium polyacrylate as a dispersant and diluting water are mixed to form a solid A paint of 60% min was obtained. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［実施例２］
カオリンＡ８０部、合成非晶質シリカＢ（製品名：ミズカシルＰ−７８Ｄ、水澤化学工業社製、平均二次粒子径７．６μｍ、吸油量２４０ｍｌ／１００ｇ）２０部、有機顔料Ａ２０部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Example 2]
80 parts of kaolin A, synthetic amorphous silica B (product name: Mizukasil P-78D, manufactured by Mizusawa Chemical Co., Ltd., average secondary particle size 7.6 μm, oil absorption 240 ml / 100 g), 20 parts of organic pigment A, binder 7 parts of SB latex (glass transition temperature 15 ° C.), 0.2 part of sodium hydroxide, 0.2 part of sodium polyacrylate as a dispersant and dilution water were mixed to obtain a paint having a solid content of 60%. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［実施例３］
カオリンＡ９０部、合成非晶質シリカＡ１０部、有機顔料Ａ１０部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Example 3]
90 parts of kaolin A, 10 parts of synthetic amorphous silica A, 10 parts of organic pigment A, 7 parts of SB latex (glass transition temperature 15 ° C.) as a binder, 0.2 part of sodium hydroxide, 0.2% sodium polyacrylate as a dispersant Parts and dilution water were mixed to obtain a paint having a solid content of 60%. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［実施例４］
カオリンＡ８０部、合成非晶質シリカＣ（製品名：ＮＩＰＧＥＬ ＡＹ−６０３、東ソーシリカ社製、平均二次粒子径６．５μｍ、吸油量２５０ｍｌ／１００ｇ）２０部、有機顔料Ａ１０部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Example 4]
80 parts of kaolin A, synthetic amorphous silica C (product name: NIPGEL AY-603, manufactured by Tosoh Silica Co., Ltd., average secondary particle size 6.5 μm, oil absorption 250 ml / 100 g) 20 parts, organic pigment A 10 parts, binder 7 parts of SB latex (glass transition temperature 15 ° C.), 0.2 part of sodium hydroxide, 0.2 part of sodium polyacrylate as a dispersing agent and dilution water were mixed to obtain a paint having a solid content of 60%. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［実施例５］
カオリンＡ８０部、合成非晶質シリカＤ（製品名：ファインシールＸ−１２、トクヤマ社製：平均二次粒子径１０．０μｍ、吸油量２４０ｍｌ／１００ｇ）２５部、有機顔料Ａ２０部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Example 5]
Kaolin A 80 parts, synthetic amorphous silica D (product name: Fine Seal X-12, manufactured by Tokuyama Corporation: average secondary particle size 10.0 μm, oil absorption 240 ml / 100 g), organic pigment A 20 parts, binder 7 parts of SB latex (glass transition temperature 15 ° C.), 0.2 part of sodium hydroxide, 0.2 part of sodium polyacrylate as a dispersing agent and dilution water were mixed to obtain a paint having a solid content of 60%. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［比較例１］
カオリンＡ１００部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）５部、水酸化ナトリウム０．１部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Comparative Example 1]
100 parts of kaolin A, 5 parts of SB latex as a binder (glass transition temperature 15 ° C.), 0.1 part of sodium hydroxide, 0.2 part of sodium polyacrylate as a dispersant and dilution water are mixed to a solid content of 60%. A paint was obtained. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［比較例２］
カオリンＢ（製品名：ＫＣＳ、イメリス社製、沈降法による平均粒子径０．３５μｍ、体積基準の積算値で２．０μｍ以下の粒子が占める割合８３％）９０部、合成非晶質シリカＡ１０部、有機顔料Ａ１５部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Comparative Example 2]
Kaolin B (product name: KCS, manufactured by Imeris Co., Ltd., average particle size of 0.35 μm by sedimentation method, 83% ratio of particles having a volume based integrated value of 2.0 μm or less) 90 parts, synthetic amorphous silica A 10 parts 15 parts of organic pigment A, 7 parts of SB latex (glass transition temperature 15 ° C.) serving as a binder, 0.2 part of sodium hydroxide, 0.2 part of sodium polyacrylate as a dispersant, and dilution water are mixed to obtain a solid content of 60 % Paint was obtained. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［比較例３］
炭酸カルシウム（製品名：ＦＭＴ−７５、ファイマテック社製）９０部、合成非晶質シリカＡ１０部、有機顔料Ａ１５部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）７部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Comparative Example 3]
90 parts of calcium carbonate (product name: FMT-75, manufactured by Phimatech), 10 parts of synthetic amorphous silica A, 15 parts of organic pigment A, 7 parts of SB latex (glass transition temperature 15 ° C.) serving as binder, 0 sodium hydroxide .2 parts, 0.2 part of sodium polyacrylate as a dispersing agent and dilution water were mixed to obtain a paint having a solid content of 60%. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
［比較例４］
カオリンＡ８０部、合成非晶質シリカＥ（製品名：ＮＩＰＧＥＬ ＡＺ−４００、東ソーシリカ社製、平均二次粒子径３．５μｍ、吸油量３１５ｍｌ／１００ｇ）２０部、有機顔料Ａ２０部、バインダーとなるＳＢラテックス（ガラス転移温度１５℃）８部、水酸化ナトリウム０．２部、分散剤としてポリアクリル酸ソーダ０．２部及び希釈水を混合して固形分６０％の塗料を得た。この塗料を、ブレードコーターを用いて片面あたり塗工量１２ｇ／ｍ２となるように、上記原紙上に両面塗工した。塗工後、紙中水分率５％となるまで乾燥し、ＪＩＳ−Ｚ ８７４１に基づく光入射角７５度の白紙光沢度が６０％となるようにスーパーカレンダー処理してインクジェット記録媒体を得た。
[Comparative Example 4]
80 parts of kaolin A, synthetic amorphous silica E (product name: NIPGEL AZ-400, manufactured by Tosoh Silica Co., Ltd., average secondary particle size 3.5 μm, oil absorption 315 ml / 100 g) 20 parts, organic pigment A 20 parts, binder 8 parts of SB latex (glass transition temperature 15 ° C.), 0.2 part of sodium hydroxide, 0.2 part of sodium polyacrylate as a dispersing agent and dilution water were mixed to obtain a paint having a solid content of 60%. This paint was coated on both sides of the base paper using a blade coater so that the coating amount per side was 12 g / m 2 . After coating, the paper was dried until the moisture content in the paper reached 5%, and an ink jet recording medium was obtained by supercalendering so that the white paper glossiness at a light incident angle of 75 degrees based on JIS-Z 8741 was 60%.
実施例、比較例で得られたインクジェット記録媒体について下記の評価を行った。
＜評価方法＞
１．白紙品質
１−１．白紙光沢度
ＪＩＳ−Ｚ ８７４１に準じて、光入射角７５度の白紙光沢度を光沢度計（村上色彩技術研究所製、Ｔｒｕｅ ＧＬＯＳＳ ＧＭ−２６ＰＲＯ）を用いて測定した。
The following evaluation was performed on the ink jet recording media obtained in Examples and Comparative Examples.
<Evaluation method>
1. Blank paper quality 1-1. White Paper Glossiness According to JIS-Z 8741, white paper glossiness at a light incident angle of 75 degrees was measured using a gloss meter (manufactured by Murakami Color Research Laboratory, True GLOSS GM-26PRO).
２．インクジェット印字品質
下記の市販の顔料インクジェットプリンターで印字を行い、以下の評価方法に準じて印字評価した。
評価プリンター：ヒューレット・パッカード社製、ＣＭ８０６０（つや消しブローシャ用紙／高品質）
2. Inkjet printing quality Printing was performed with the following commercially available pigment inkjet printers, and printing evaluation was performed according to the following evaluation method.
Evaluation printer: CM8060 manufactured by Hewlett-Packard Company (matte brochure paper / high quality)
２−１．乾燥性（インク吸収性）
評価プリンターにて１．５ポイントの太さの黒色直線を印字し、印字１０分後に指で擦り、以下の基準で乾燥性を評価した。
○：指で擦っても印字部が殆ど延びず、インク吸収速度が速く、良好なレベルである。
△：指で擦ると印字部が若干延び、ややインク吸収速度が遅いが、実用上問題の無いレベルである。
×：指で擦ると印字部が延び、インク吸収速度が遅く、実用に耐えないレベルである。
2-1. Dryability (ink absorption)
A black straight line with a thickness of 1.5 points was printed with an evaluation printer, and rubbed with a finger 10 minutes after printing, and the drying property was evaluated according to the following criteria.
○: The printed part hardly extends even when rubbed with a finger, the ink absorption speed is fast, and the level is good.
[Delta]: When rubbed with a finger, the printed portion is slightly extended and the ink absorption speed is slightly slow, but it is at a level that causes no practical problems.
X: When rubbed with a finger, the printed part is extended, the ink absorption speed is slow, and it is at a level unbearable for practical use.
２−２．ロール汚れ
評価プリンターにて印刷速度が１１ｐｐｍ以上となるような特定の印字パターンを30枚連続で印刷したときに発生するロール汚れについて評価した。
○：ロール汚れが見られず、良好なレベルである。
×：ロール汚れが発生し、実用に耐えないレベルである。
2-2. Roll stain The roll stain generated when a specific print pattern having a printing speed of 11 ppm or more was continuously printed by an evaluation printer was evaluated.
○: No roll stains are seen and the level is good.
X: Roll contamination occurs and the level is not practical.
２−３．オフセット印刷用塗工紙の風合い
評価プリンターにて所定のパターンをインクジェット印字した。これと同一のパターンをオフセット印刷用塗工紙（オーロラコート：日本製紙社製、坪量１０４．７ｇ／ｍ２）にオフセット印刷した。各インクジェット印刷物の見た目や手触り等の質感をオフセット印刷物と比較し、以下の基準で評価した。
○：見た目や手触り等の質感がオフセット印刷用塗工紙に近く、オフセット印刷物の風合いを有している。
×：見た目や手触り等の質感がオフセット印刷用塗工紙と異なり、オフセット印刷物の風合いを有していない。
2-3. Texture of coated paper for offset printing A predetermined pattern was inkjet printed with an evaluation printer. The same pattern as this was offset printed on coated paper for offset printing (Aurora Coat: manufactured by Nippon Paper Industries Co., Ltd., basis weight 104.7 g / m 2 ). The appearance and texture of each inkjet printed material was compared with the offset printed material and evaluated according to the following criteria.
○: The texture such as appearance and touch is close to the coated paper for offset printing, and has a texture of offset printed matter.
X: Unlike the coated paper for offset printing, the texture such as appearance and touch is not the texture of the offset printed material.
得られた結果を表１、表２に示す。 The obtained results are shown in Tables 1 and 2.
表１、２から明らかなように、各実施例の場合、ロール汚れが良好で、乾燥性にも優れオフセット印刷用塗工紙の風合いを持った用紙が得られた。 As is clear from Tables 1 and 2, in each example, a paper with good roll stain and excellent dryness and texture of coated paper for offset printing was obtained.
一方、合成非晶質シリカを全く含まない比較例１の場合、乾燥性やロール汚れが劣っていたが、これはインク受容層の空隙が著しく少ないことにより、インク受容層のインクを保持する能力が低くなったためと考えられる。 On the other hand, in the case of Comparative Example 1 which does not contain any synthetic amorphous silica, the drying property and the roll stain were inferior, but this is the ability to hold the ink in the ink receiving layer due to the extremely small voids in the ink receiving layer. This is thought to be due to lowering.
カオリンの粒度分布が本発明で指定する範囲と異なる比較例２やカオリンを全く含まない比較例３の場合、インクの乾燥性やロール汚れが劣っていた。これは、顔料の粒度分布がブロードであるためにインク受容層が密となり、その結果インク吸収性能が低くなったためと考えられる。 In the case of Comparative Example 2 in which the particle size distribution of kaolin is different from the range specified in the present invention and Comparative Example 3 containing no kaolin at all, the drying property and roll stain of the ink were inferior. This is presumably because the ink receiving layer became dense due to the broad particle size distribution of the pigment, and as a result, the ink absorption performance was lowered.
合成非晶質シリカの平均二次粒子径が本発明で指定する範囲より小さい比較例４の場合、乾燥性は良好だったが、ロール汚れは劣っていた。これは、原因は定かではないが塗工紙表面の平滑性が優れることにより搬送ロールとの密着が良好になったためと考えられる。 In Comparative Example 4 in which the average secondary particle diameter of the synthetic amorphous silica was smaller than the range specified in the present invention, the drying property was good, but the roll soil was inferior. Although this is not clear, it is thought that the close contact with the transport roll is improved due to the excellent smoothness of the coated paper surface.
Claims (5)
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10102395A (en) * | 1996-09-27 | 1998-04-21 | Kao Corp | Manufacturing method of recording paper |
| JPH1148604A (en) * | 1997-07-31 | 1999-02-23 | Hokuetsu Paper Mills Ltd | High gloss type ink jet recording paper and method of manufacturing the same |
| JP2000313167A (en) * | 1999-04-28 | 2000-11-14 | Kao Corp | Recording sheet |
| JP2005188001A (en) * | 2003-12-26 | 2005-07-14 | Nicca Chemical Co Ltd | Method for producing coated paper |
| JP2005186359A (en) * | 2003-12-25 | 2005-07-14 | Nippon Paper Industries Co Ltd | Inkjet recording medium for pigment ink |
| JP2006231914A (en) * | 2005-01-28 | 2006-09-07 | Oji Paper Co Ltd | Inkjet recording medium |
| JP2006281606A (en) * | 2005-03-31 | 2006-10-19 | Nippon Paper Industries Co Ltd | Inkjet recording medium |
| JP2008069332A (en) * | 2006-09-15 | 2008-03-27 | Ricoh Co Ltd | Ink jet recording ink, ink jet recording ink set, ink jet recording ink media set, ink cartridge, ink jet recording method, and ink jet recording apparatus. |
| JP2008238612A (en) * | 2007-03-28 | 2008-10-09 | Nippon Paper Industries Co Ltd | Inkjet recording medium |
-
2009
- 2009-03-27 JP JP2009080654A patent/JP2010228392A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10102395A (en) * | 1996-09-27 | 1998-04-21 | Kao Corp | Manufacturing method of recording paper |
| JPH1148604A (en) * | 1997-07-31 | 1999-02-23 | Hokuetsu Paper Mills Ltd | High gloss type ink jet recording paper and method of manufacturing the same |
| JP2000313167A (en) * | 1999-04-28 | 2000-11-14 | Kao Corp | Recording sheet |
| JP2005186359A (en) * | 2003-12-25 | 2005-07-14 | Nippon Paper Industries Co Ltd | Inkjet recording medium for pigment ink |
| JP2005188001A (en) * | 2003-12-26 | 2005-07-14 | Nicca Chemical Co Ltd | Method for producing coated paper |
| JP2006231914A (en) * | 2005-01-28 | 2006-09-07 | Oji Paper Co Ltd | Inkjet recording medium |
| JP2006281606A (en) * | 2005-03-31 | 2006-10-19 | Nippon Paper Industries Co Ltd | Inkjet recording medium |
| JP2008069332A (en) * | 2006-09-15 | 2008-03-27 | Ricoh Co Ltd | Ink jet recording ink, ink jet recording ink set, ink jet recording ink media set, ink cartridge, ink jet recording method, and ink jet recording apparatus. |
| JP2008238612A (en) * | 2007-03-28 | 2008-10-09 | Nippon Paper Industries Co Ltd | Inkjet recording medium |
Cited By (28)
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