JP2020181177A - Electrophotographic printing image receiving film material - Google Patents
Electrophotographic printing image receiving film material Download PDFInfo
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本発明は、湿式電子写真方式印刷及び乾式電子写真方式印刷の両方の印刷方法に対して使用可能な受像用フィルム素材に関する。 The present invention relates to an image-receiving film material that can be used for both wet electrophotographic printing and dry electrophotographic printing.
近年特に小ロットの商業用印刷において、湿式電子写真方式による印刷が行われる事が多くなってきている。湿式電子写真方式印刷は、一般的な商業用印刷に用いられているＵＶオフセット印刷と比較すると、版を作る必要が無いので小ロット印刷におけるコスト的なメリットがあるだけでなく、オンデマンドの印刷対応が可能であり、さらに環境負荷が少ないという利点を有している。また、従来からオフィスなどで使用されているような卓上で使用する乾式電子写真方式のレーザープリンタ等で用いられている乾式トナーに比べて、湿式電子写真方式で用いられる湿式トナーはトナーの粒子径をより小さくする事が可能である為に、湿式電子写真方式印刷はオフセット印刷相当の優れた印刷画像の解像度や階調性を有している点も大きな特徴の一つである。 In recent years, especially in small lot commercial printing, printing by the wet electrophotographic method is often performed. Compared to UV offset printing used for general commercial printing, wet electrophotographic printing not only has a cost advantage in small lot printing because it does not require plate making, but also on-demand printing. It has the advantage that it can be handled and the environmental load is small. Further, compared to the dry toner used in the dry electrophotographic laser printer or the like used on a desktop as conventionally used in offices, the wet toner used in the wet electrophotographic method has a toner particle size. One of the major features of wet electrophotographic printing is that it has excellent print image resolution and gradation equivalent to offset printing because it is possible to make the size smaller.
この様な湿式電子写真方式印刷によって、受像層などを全く設けていないフィルム基材に対して直接印刷を行うと、印刷画像が適切に転写しなかったり、仮に印刷画像がフィルム基材に適切に転写したとしてもフィルム基材との密着性が悪くて印刷画像を少し擦っただけで取れてしまったりといった問題が発生する。そこで従来から一般的に乾式電子写真方式印刷で使用されているような乾式トナー用の受像層を有した受像用フィルム素材に対して湿式電子写真方式で印刷を行ったが、それでも印刷画像の転写性や印刷画像と受像層との密着性はほとんど改善されなかった。この様な問題に対応する為に、特許文献１（特開平９−１１４１２２号公報）に記載されているようなコロイダルシリカを主成分とする湿式トナーに適した受像層をフィルム基材上に設けた液体現像式電子写真のトナー定着層付き記録シートが提案されている。 When printing is performed directly on a film substrate that does not have an image receiving layer or the like by such wet electrophotographic printing, the printed image may not be transferred properly, or the printed image may be appropriately transferred to the film substrate. Even if the image is transferred, the adhesion to the film substrate is poor, and there is a problem that the printed image can be removed by rubbing it a little. Therefore, printing was performed by the wet electrophotographic method on an image receiving film material having an image receiving layer for dry toner, which has been generally used in dry electrophotographic printing, but the transfer of the printed image is still performed. The property and the adhesion between the printed image and the image receiving layer were hardly improved. In order to deal with such a problem, an image receiving layer suitable for a wet toner containing colloidal silica as a main component as described in Patent Document 1 (Japanese Unexamined Patent Publication No. 9-114122) is provided on the film substrate. A recording sheet with a toner fixing layer for liquid-developed electrophotographic has been proposed.
しかしながら特許文献１に記載の液体現像式電子写真のトナー定着層付き記録シートは基本的にポリエチレンテレフタレートフィルムをフィルム基材として使用する事を想定しており、フィルム基材に極性の大きいポリエチレンテレフタレート樹脂製のフィルムを使用した場合にはフィルム基材とトナー定着層との密着性は優れているが、フィルム基材に極性の小さいポリプロピレン樹脂製のフィルムを使用した場合には、フィルム基材とトナー定着層との間の密着性が大幅に低下する事が原因でトナー定着層がフィルム基材から容易に剥離してしまうといった問題が発生する事が分かった。また既存の湿式電子写真方式印刷受像用フィルム素材や乾式電子写真方式印刷受像用フィルム素材に関しては、各々の受像用フィルム素材に適した印刷方式においては優れた印刷適性や印刷画像と受像層との密着性を有するものの、例えば湿式電子写真方式印刷受像用フィルム素材を乾式電子写真方式の印刷に使用すると印刷画像の転写性や印刷品質といった各種印刷適性や、印刷画像と受像層との密着性に問題が生じる事が多かった。このように従来の湿式電子写真方式印刷受像用フィルム素材や乾式電子写真方式印刷受像用フィルム素材に関しては、使用可能なフィルム基材の材質や印刷方式が限定された物であった。 However, the recording sheet with a toner fixing layer for liquid-developing electrophotographic described in Patent Document 1 basically assumes that a polyethylene terephthalate film is used as a film base material, and a polyethylene terephthalate resin having a large polarity is used as the film base material. When a film made of polypropylene resin is used, the adhesion between the film base material and the toner fixing layer is excellent, but when a polypropylene resin film having a small polarity is used for the film base material, the film base material and the toner are used. It has been found that the toner fixing layer is easily peeled off from the film base material due to the significant decrease in the adhesion between the fixing layer and the fixing layer. Regarding the existing wet electrophotographic printing image receiving film material and the dry electrophotographic printing image receiving film material, the printing method suitable for each image receiving film material has excellent printability and the print image and the image receiving layer. Although it has adhesiveness, for example, when a wet electrophotographic printing image receiving film material is used for dry electrophotographic printing, various printability such as transferability and print quality of the printed image and adhesion between the printed image and the image receiving layer are improved. Problems often occurred. As described above, with respect to the conventional wet electrophotographic printing image receiving film material and the dry electrophotographic printing image receiving film material, the usable film base material and printing method have been limited.
本発明はこの様な状況に鑑みてなされたものであり、湿式電子写真方式印刷及び乾式電子写真方式印刷の両方に対して優れた印刷適性を有した受像用フィルム素材であって、各種フィルム基材と受像層との密着性及び印刷画像と受像層との密着性に優れ、さらにさばき性と耐ブロッキング性に優れた電子写真方式印刷受像用フィルム素材を提供する事が本発明の主たる課題である。 The present invention has been made in view of such a situation, and is an image-receiving film material having excellent printability for both wet electrophotographic printing and dry electrophotographic printing, and is based on various film groups. The main object of the present invention is to provide a film material for electrophotographic printing image reception, which is excellent in adhesion between a material and an image receiving layer, adhesion between a printed image and an image receiving layer, and further excellent handling property and blocking resistance. is there.
これらの課題を解決する為に、まず本発明者は湿式及び乾式電子写真方式印刷を行った際に印刷画像の転写性（トナーの転写性）や印刷品質といった印刷適性に優れるような受像層の原料を選別し、次にそれらの原料の中から各種フィルム基材との密着性が安定的に優れているような原料を選別した結果、ダイマー酸を原料とした熱可塑性のダイマー酸系ポリアミド樹脂を受像層に使用すれば極性の小さい樹脂を使ったフィルム基材から極性の大きな樹脂を使ったフィルム基材までの各種フィルム基材に対して非常に強い密着性を示す事を見出した。本発明者はさらに印刷画像と受像層の密着性について検討を重ねた結果、ダイマー酸系ポリアミド樹脂を受像層に使用すれば、印刷画像と受像層の密着性に関しても優れている事を見出した。さらに本発明者は、このダイマー酸系ポリアミド樹脂を使用した受像層の優れた各特性を損ねずに、受像用フィルムのさばき性及び耐ブロッキング性を改善できるような原料を検討した結果、レーザー回折・散乱法によって測定した粒子の体積径のメジアン径Ｄ５０がおおよそ１０数μｍ以下の大きさの球状微粒子になるように加工されたワックス微粒子であって、さらに融点（ＪＩＳ Ｋ７１２１（ＤＳＣ法））が９０〜１６０℃の範囲であるようなワックス微粒子を前記受像層に適量添加する事によって前記目的を達成する事が可能である事を見出した。In order to solve these problems, the present inventor first obtains an image receiving layer that is excellent in printability such as transferability (toner transferability) and print quality of a printed image when wet and dry electrophotographic printing is performed. As a result of selecting the raw materials and then selecting the raw materials having stable and excellent adhesion to various film substrates from those raw materials, a thermoplastic dimer acid-based polyamide resin made from dimer acid as a raw material. It was found that when is used for the image receiving layer, it exhibits extremely strong adhesion to various film substrates from a film substrate using a resin having a small polarity to a film substrate using a resin having a large polarity. As a result of further studies on the adhesion between the printed image and the image receiving layer, the present inventor has found that if a dimer acid-based polyamide resin is used for the image receiving layer, the adhesion between the printed image and the image receiving layer is also excellent. .. Furthermore, the present inventor has investigated a raw material capable of improving the handling property and blocking resistance of the image receiving film without impairing the excellent properties of the image receiving layer using this dimer acid-based polyamide resin, and as a result, laser diffraction -Wax fine particles processed so that the median diameter D 50 of the volume diameter of the particles measured by the scattering method becomes spherical fine particles having a size of about 10 μm or less, and further has a melting point (JIS K7121 (DSC method)). It has been found that the above object can be achieved by adding an appropriate amount of wax fine particles having a temperature in the range of 90 to 160 ° C. to the image receiving layer.
すなわち上述した全ての課題を解決する為に、本発明者が様々な検討を行った結果、フィルム基材の少なくとも一方の面に、ダイマー酸系ポリアミド樹脂と融点（ＪＩＳ Ｋ７１２１（ＤＳＣ法））が９０〜１６０℃の範囲であるワックス微粒子を含有する受像層を設ける事によって、湿式電子写真方式印刷及び乾式電子写真方式印刷の両方に対して優れた印刷適性を有した受像用フィルム素材であって、各種フィルム基材と受像層との密着性及び印刷画像と受像層との密着性に優れ、さらにさばき性と耐ブロッキング性に優れた電子写真方式印刷受像用フィルム素材を提供する事が可能となった。 That is, as a result of various studies conducted by the present inventor in order to solve all the above-mentioned problems, a dimer acid-based polyamide resin and a melting point (JIS K7121 (DSC method)) are found on at least one surface of the film substrate. By providing an image receiving layer containing wax fine particles in the range of 90 to 160 ° C., the image receiving film material has excellent printability for both wet electrophotographic printing and dry electrophotographic printing. It is possible to provide a film material for electrophotographic printing image reception, which has excellent adhesion between various film substrates and an image receiving layer, and excellent adhesion between a printed image and an image receiving layer, and also has excellent handling property and blocking resistance. became.
本発明の電子写真方式印刷受像用フィルム素材は湿式電子写真方式印刷にも乾式電子写真方式印刷にも使用可能であり、優れた印刷適性を有し且つフィルム基材と受像層の密着性及び印刷画像と受像層との密着性において共に優れた性能を発揮し、さらに重送やブロッキングなどの問題を起こさない。 The film material for electrophotographic printing of the present invention can be used for both wet electrophotographic printing and dry electrophotographic printing, has excellent printability, and has excellent printability, adhesion between the film substrate and the image receiving layer, and printing. It exhibits excellent performance in terms of adhesion between the image and the image receiving layer, and does not cause problems such as double feeding and blocking.
本発明における電子写真方式印刷受像用フィルム素材３は、基本的に図１に示されているように、少なくともフィルム基材１とフィルム基材１の少なくとも一方の面に設けられた受像層２からなる事を特徴としている。フィルム基材１としては、フィルム基材１の受像層２が設けられる面にコロナ処理などの表面処理を施したものを使用してもよいし、必要に応じてフィルムの製膜時にフィルム基材１の両面もしくは一方の面に帯電防止層を設けたものを使用してもよい。本発明の電子写真方式印刷受像用フィルム素材３の特徴としては、フィルム基材１と受像層２の間にプライマー層などの中間層を設けなくてもフィルム基材１と受像層２との間の密着力が優れており、さらに湿式電子写真方式又は乾式電子写真方式による印刷によって受像層２上に設けた印刷画像４の転写性や印刷品質などの各種印刷適性が良好で、且つ印刷画像４と受像層２との間の密着力が優れている点である。 As shown in FIG. 1, the
＜電子写真方式印刷受像用フィルム素材について＞
本発明における電子写真方式印刷受像用フィルム素材は、少なくともフィルム基材とフィルム基材の少なくとも一方の面に設けられた受像層を設けた構造を特徴としている。<About film material for electrophotographic printing image reception>
The film material for electrophotographic printing image reception in the present invention is characterized by a structure in which an image receiving layer provided on at least one surface of the film base material and the film base material is provided.
本発明の電子写真方式印刷受像用フィルム素材はロール状に巻かれた状態で印刷機に供給される事もあるが、一般的には枚葉シート状の印刷用素材として印刷機に供給される事が多く、その大きさに関しては特に限定はされないが基本的にはＪＩＳ Ｐ０２０２で定められている各種の全紙寸法を適宜選択して使用すれば良い。 The film material for electrophotographic printing of the present invention may be supplied to a printing machine in a rolled state, but is generally supplied to a printing machine as a sheet-like printing material. There are many cases, and the size thereof is not particularly limited, but basically, various total paper dimensions defined by JIS P0202 may be appropriately selected and used.
本発明の電子写真方式印刷受像用フィルム素材の厚みは特に限定はされないが、７５〜３６０μｍの範囲である事が好ましく、さらには１００〜３１０μｍの範囲である事がより好ましい。電子写真方式印刷受像用フィルム素材の厚みが前記範囲の下限を下回るとフィルムの腰が足りなかったりフィルムにシワが入りやすくなったりして搬送や印刷などで不具合が発生しやすくなり、逆に前記範囲の上限を上回ると厚みが増え過ぎた事が原因で搬送や印刷などで不具合が発生したり、印刷後の成型が困難になるといった不具合が発生しやすくなったりする。 The thickness of the film material for electrophotographic printing of the present invention is not particularly limited, but is preferably in the range of 75 to 360 μm, and more preferably in the range of 100 to 310 μm. If the thickness of the film material for electrophotographic printing image reception is less than the lower limit of the above range, the film may not be sufficiently stiff or wrinkled easily, and problems may easily occur during transportation or printing. If the upper limit of the range is exceeded, problems may occur during transportation or printing due to the excessive thickness, or problems such as difficulty in molding after printing may occur.
＜電子写真方式印刷受像用フィルム素材の各構成体＞
次に本発明における電子写真方式印刷受像用フィルム素材の各構成体についての詳細説明を下記に示す。<Each composition of film material for electrophotographic printing image reception>
Next, a detailed description of each component of the film material for electrophotographic printing image reception in the present invention is shown below.
（フィルム基材）
本発明の構成体の一つであるフィルム基材は特に限定されず、例えばポリエチレンテレフタレートフィルム（２軸延伸ポリエチレンテレフタレートフィルム（ＰＥＴフィルム）、非晶性ポリエチレンテレフタレートフィルム（Ａ‐ＰＥＴフィルム）、グリコール変性ポリエチレンテレフタレートフィルム（ＰＥＴ‐Ｇフィルム）等）、ポリカーボネート（ＰＣ）フィルム、ＰＭＭＡフィルム、ポリプロピレンフィルム（二軸延伸ポリプロピレンフィルム（ＯＰＰフィルム）、無延伸ポリプロピレンフィルム（ＣＰＰフィルム）等）といった公知のフィルムを使用する事が可能であるが、ポリエチレンテレフタレートフィルムやポリプロピレンフィルムを使用する事がより好ましい。(Film base material)
The film substrate which is one of the constituents of the present invention is not particularly limited, and for example, polyethylene terephthalate film (biaxially stretched polyethylene terephthalate film (PET film), amorphous polyethylene terephthalate film (A-PET film), glycol modified Uses known films such as polyethylene terephthalate film (PET-G film), polycarbonate (PC) film, PMMA film, polypropylene film (biaxially stretched polypropylene film (OPP film), non-stretched polypropylene film (CPP film), etc.). Although it is possible, it is more preferable to use a polyethylene terephthalate film or a polypropylene film.
フィルム基材の厚みは特に限定はされないが、上記電子写真方式印刷受像用フィルム素材の厚みと同様の理由から、７０〜３５０μｍの範囲である事が好ましく、１００〜３００μｍの範囲である事がより好ましい。 The thickness of the film base material is not particularly limited, but is preferably in the range of 70 to 350 μm, more preferably in the range of 100 to 300 μm, for the same reason as the thickness of the film material for electrophotographic printing image reception. preferable.
フィルム基材には必要に応じてフィルム基材の造膜時にフィルム基材の一方の面もしくは両方の面に帯電防止層をインラインで形成してもよいし、フィルム基材の受像層を設ける側の面の表面に受像層との密着性を向上させる為にコロナ処理等の表面処理を必要に応じて施してもよい。 If necessary, an antistatic layer may be formed in-line on one or both surfaces of the film substrate when the film substrate is formed, or the side where the image receiving layer of the film substrate is provided. A surface treatment such as a corona treatment may be applied to the surface of the surface as necessary in order to improve the adhesion with the image receiving layer.
（受像層）
本発明の電子写真方式印刷受像用フィルム素材における受像層は、少なくともフィルム基材の一方の面の最外層に設けられ、電子写真方式印刷が行われた際にトナーの転写性や濡れ性や耐熱性等を改善する事によって各種印刷適性を向上し、さらにフィルム基材と受像層との間の密着性及び印刷画像と受像層との間の密着性を向上させる為に基本的に設けられる層である。(Image receiving layer)
The image receiving layer in the film material for electrophotographic printing of the present invention is provided on at least the outermost layer of one surface of the film base material, and when electrophotographic printing is performed, the transferability, wettability, and heat resistance of the toner A layer basically provided to improve various printability by improving properties and the like, and further to improve the adhesion between the film substrate and the image receiving layer and the adhesion between the printed image and the image receiving layer. Is.
本発明の受像層に主に用いられる原料としては、受像層の塗膜を主に形成して、フィルム基材や印刷画像との密着性やトナーの転写性や濡れ性や耐熱性等に影響を与える樹脂原料と、電子写真方式印刷受像用フィルム素材のさばき性や耐ブロッキング性等に影響を与えるワックス微粒子が少なくとも挙げられる。 As a raw material mainly used for the image receiving layer of the present invention, a coating film of the image receiving layer is mainly formed, which affects the adhesion to the film substrate and the printed image, the transferability of the toner, the wettability, the heat resistance, and the like. At least the resin raw material that gives the effect and the wax fine particles that affect the handling property, blocking resistance, etc. of the film material for electrophotographic printing image reception can be mentioned.
本発明の受像層に用いられる樹脂原料としては、各電子写真方式印刷における印刷適性に優れ、且つ各種フィルム基材と受像層との間の密着性及び印刷画像と受像層との間の密着性に優れているような樹脂が好ましく、本発明者が様々な樹脂を検討した結果、ダイマー酸を素原料とする熱可塑性のダイマー酸系ポリアミド樹脂を使用する事が最も好ましい事を見出した。ダイマー酸系ポリアミド樹脂はその構造中に極性の小さい長鎖アルキル基と極性の大きいアミド基の両方を有しており、それらが極性の小さい樹脂原料からなるフィルム基材から極性の大きい樹脂原料からなるフィルム基材までに対する密着性の向上や各種トナー原料との密着性の向上に関与していると考えられる。 The resin raw material used for the image receiving layer of the present invention is excellent in printability in each electrophotographic printing, and has adhesion between various film substrates and the image receiving layer and adhesion between the printed image and the image receiving layer. As a result of examining various resins, the present inventor has found that it is most preferable to use a thermoplastic dimer acid-based polyamide resin using dimer acid as a raw material. The dimer acid-based polyamide resin has both a long-chain alkyl group having a small polarity and an amide group having a large polarity in its structure, and from a film substrate made of a resin raw material having a small polarity to a resin raw material having a large polarity. It is considered that it is involved in the improvement of the adhesion to the film substrate and the adhesion to various toner raw materials.
さらに本発明者が特に湿式電子写真方式の印刷において検討を重ねた結果、受像層に用いるダイマー酸系ポリアミド樹脂の軟化点（環球法）は９０〜１７０℃の範囲である事が好ましく、１００〜１５０℃の範囲である事がより好ましく、１２０〜１５０℃の範囲である事が最も好ましい事を見出した。ダイマー酸系ポリアミド樹脂の軟化点が前記範囲内であれば、フィルム基材と受像層との間の密着性及び湿式電子写真方式の印刷を行った際の印刷画像と受像層との間の密着性が共に大きく向上することを見出した。ダイマー酸系ポリアミド樹脂の軟化点が前記範囲の下限を下回ると、印刷画像と受像層との間の密着性が低下したり、電子写真方式印刷受像用フィルム素材を枚葉シート状にして積層した際に受像層が前記フィルム素材の背面側にブロッキングし易くなったりする傾向があり、逆にダイマー酸系ポリアミド樹脂の軟化点が前記範囲の上限を上回るとフィルム基材と受像層との間の密着性及び印刷画像と受像層との間の密着性が共に低下する傾向がある。なお本発明における軟化点とは、ＪＩＳ Ｋ５６０１に基づいて環球法によって測定した軟化点の事である。 Further, as a result of repeated studies by the present inventor especially in wet electrophotographic printing, the softening point (ring ball method) of the dimer acid-based polyamide resin used for the image receiving layer is preferably in the range of 90 to 170 ° C., and is preferably 100 to 170 ° C. It has been found that the range of 150 ° C. is more preferable, and the range of 120 to 150 ° C. is the most preferable. When the softening point of the dimer acid-based polyamide resin is within the above range, the adhesion between the film substrate and the image receiving layer and the adhesion between the printed image and the image receiving layer when wet electrophotographic printing is performed. It was found that both sexes are greatly improved. When the softening point of the dimer acid-based polyamide resin is less than the lower limit of the above range, the adhesion between the printed image and the image receiving layer is lowered, or the film material for electrophotographic printing image receiving is laminated in the form of a sheet. At that time, the image receiving layer tends to be easily blocked on the back side of the film material, and conversely, when the softening point of the dimer acid-based polyamide resin exceeds the upper limit of the above range, the film base material and the image receiving layer are separated from each other. Both the adhesion and the adhesion between the printed image and the image receiving layer tend to decrease. The softening point in the present invention is a softening point measured by the ring-and-ball method based on JIS K5601.
本発明の受像層に用いるのに適したダイマー酸系ポリアミド樹脂の融点（ＤＳＣ法）については特に限定はされないが、本発明者が検討したところ７０〜１４０℃の範囲である事が好ましく、９０〜１４０℃の範囲である事がより好ましく、１００〜１３０℃の範囲である事が最も好ましい事が判明した。受像層に用いるダイマー酸系ポリアミド樹脂の融点が前記範囲内であれば、湿式電子写真方式の印刷を行った際の印刷画像の受像層に対する転写性及び印刷画像と受像層との間の密着性が共に優れていて、さらに印刷時にトナーを被印刷媒体に定着させる為のブランケットロール（湿式電子写真方式印刷）やヒートロール（乾式電子写真方式印刷）等の熱圧着ロールに電子写真方式印刷受像用フィルム素材が巻きつく事が少なく、また熱圧着ロール等の熱によって印刷画像が歪むことも少ない傾向にある。ダイマー酸系ポリアミド樹脂の融点が前記範囲の下限を下回ると、湿式電子写真方式の印刷を行った際の印刷画像の受像層に対する転写性及び印刷画像と受像層との間の密着性が共に低下し、さらに印刷時に熱圧着ロールに電子写真方式印刷受像用フィルム素材が巻きついたり、熱圧着ロールの熱によって印刷画像が歪んだりし易くなったりする傾向があるだけでなく、電子写真方式印刷受像用フィルム素材の耐ブロッキング性も悪化する傾向がある。逆にダイマー酸系ポリアミド樹脂の融点が前記範囲の上限を上回るとフィルム基材と受像層との間の密着性及び湿式電子写真方式の印刷を行った際の印刷画像と受像層との間の密着性が共に低下する傾向がある。なお本発明における融点とは、ＪＩＳ Ｋ７１２１に基づいて示差走査熱量測定法（ＤＳＣ法）によって測定した融解ピーク温度の事である。 The melting point (DSC method) of the dimer acid-based polyamide resin suitable for use in the image receiving layer of the present invention is not particularly limited, but as examined by the present inventor, it is preferably in the range of 70 to 140 ° C., 90. It was found that the range of ~ 140 ° C. is more preferable, and the range of 100 to 130 ° C. is the most preferable. When the melting point of the dimer acid-based polyamide resin used for the image receiving layer is within the above range, the transferability of the printed image to the image receiving layer and the adhesion between the printed image and the image receiving layer when printing by the wet electrophotographic method is performed. For electrophotographic printing on heat-bonded rolls such as blanket rolls (wet electrophotographic printing) and heat rolls (dry electrophotographic printing) for fixing toner to the printing medium during printing. The film material is less likely to wrap, and the printed image is less likely to be distorted by heat from a heat-bonding roll or the like. When the melting point of the dimer acid-based polyamide resin falls below the lower limit of the above range, the transferability of the printed image to the image receiving layer and the adhesion between the printed image and the image receiving layer when wet electrophotographic printing is performed are both lowered. In addition, the film material for electrophotographic printing image reception tends to be wrapped around the heat-bonding roll during printing, and the printed image tends to be distorted due to the heat of the heat-bonding roll. The blocking resistance of the film material also tends to deteriorate. On the contrary, when the melting point of the dimer acid-based polyamide resin exceeds the upper limit of the above range, the adhesion between the film base material and the image receiving layer and the gap between the printed image and the image receiving layer when wet electrophotographic printing is performed. Adhesion tends to decrease together. The melting point in the present invention is the melting peak temperature measured by the differential scanning calorimetry (DSC method) based on JIS K7121.
本発明の受像層におけるダイマー酸系ポリアミド樹脂の含有量は特に限定はされないが、受像層の全質量中の６０．０〜９９．５質量％の範囲である事が好ましく、８０．０〜９９．５質量％の範囲である事がより好ましい。受像層中におけるダイマー酸の含有量が前記範囲内であれば、フィルム基材と受像層との間の密着性及び印刷を行った際の印刷画像と受像層との間の密着性は共に優れており、前記範囲の下限を下回るとフィルム基材と受像層との密着性及び印刷画像と受像層との間の密着性が共に大きく低下する傾向がある。 The content of the dimer acid-based polyamide resin in the image receiving layer of the present invention is not particularly limited, but is preferably in the range of 60.0 to 99.5% by mass, and 80.0 to 99% of the total mass of the image receiving layer. More preferably, it is in the range of 5.5% by mass. When the content of dimer acid in the image receiving layer is within the above range, the adhesion between the film base material and the image receiving layer and the adhesion between the printed image and the image receiving layer at the time of printing are both excellent. If it is less than the lower limit of the above range, both the adhesion between the film base material and the image receiving layer and the adhesion between the printed image and the image receiving layer tend to be significantly reduced.
本発明の受像層の原料として使用するのに好ましいワックス微粒子とは、レーザー回折・散乱法によって測定した粒子の体積径のメジアン径Ｄ５０が１０数μｍ以下の球状粒子に形成されたワックスの微粒子粉末の事であり、受像層の滑性や耐熱性を向上させたり、電子写真方式印刷受像用フィルム素材のさばき性や耐ブロッキング性を向上させたりする為に受像層に添加される。The wax fine particles preferable to be used as a raw material for the image receiving layer of the present invention are wax fine particles formed into spherical particles having a median diameter D 50 of the volume diameter of the particles measured by a laser diffraction / scattering method of 10 and several μm or less. It is a powder, and is added to the image receiving layer in order to improve the slipperiness and heat resistance of the image receiving layer, and to improve the handling property and blocking resistance of the film material for electrophotographic printing image receiving.
本発明の受像層に使用するワックス微粒子の融点は９０〜１６０℃の範囲である事が少なくとも必要であり、１００〜１５０℃の範囲である事がより好ましく、１２０〜１５０℃である事が最も好ましい。ワックス微粒子の融点が前記範囲であれば、さばき性や耐ブロッキング性に関する問題は発生し難く、さらに湿式電子写真方式印刷と乾式電子写真方式印刷の両方において印刷画像の転写性や印刷品質などの各種印刷適性に問題が発生しない。ワックス微粒子の融点が前記範囲の下限を下回ると、さばき性や耐ブロッキング性が悪化したり、印刷時の熱圧着ロールの熱によって印刷画像が歪んでしまったり、印刷画像と受像層との間の密着性が低下したりといった問題が発生し易くなる傾向があり、逆にワックス微粒子の融点が前記範囲の上限を上回ると、印刷画像の転写性がワックス微粒子部分において悪化したり、印刷画像と受像層との間の密着性が低下する傾向がある。 The melting point of the wax fine particles used in the image receiving layer of the present invention needs to be at least in the range of 90 to 160 ° C., more preferably in the range of 100 to 150 ° C., and most preferably in the range of 120 to 150 ° C. preferable. If the melting point of the wax fine particles is within the above range, problems related to handling and blocking resistance are unlikely to occur, and in both wet electrophotographic printing and dry electrophotographic printing, various types such as transferability and print quality of printed images are not likely to occur. There is no problem with printability. If the melting point of the wax fine particles falls below the lower limit of the above range, the handling property and blocking resistance deteriorate, the printed image is distorted by the heat of the thermocompression bonding roll during printing, and the printed image and the image receiving layer are separated from each other. Problems such as deterioration of adhesion tend to occur. On the contrary, when the melting point of the wax fine particles exceeds the upper limit of the above range, the transferability of the printed image deteriorates in the wax fine particles portion, or the printed image and the image are received. Adhesion between layers tends to decrease.
本発明の受像層に使用するワックス微粒子の粒子径は、そのレーザー回折・散乱法によって測定した粒子の体積径のメジアン径Ｄ５０が１．０〜１５．０μｍの範囲である事が好ましく、３．０〜９．０μｍの範囲である事がより好ましい。ワックス微粒子の粒子径が前記範囲内であれば、受像層の滑性等が向上する事によって電子写真方式印刷受像用フィルム素材のさばき性が充分となり、ワックス微粒子による印刷画像の印字品質や印刷画像と受像層との間の密着性の低下などの影響を最小限に抑える事が可能となる。ワックス微粒子の粒子径が前記範囲の下限を下回ると、電子写真方式印刷受像用フィルム素材のさばき性や耐ブロッキング性などが悪化する傾向があり、逆に前記範囲の上限を上回ると、印刷画像の印字品質や印刷画像と受像層との間の密着性が低下していく傾向がある。The particle size of the wax fine particles used in the image receiving layer of the present invention preferably has a median diameter D 50 of the volume diameter of the particles measured by the laser diffraction / scattering method in the range of 1.0 to 15.0 μm. More preferably, it is in the range of .0 to 9.0 μm. When the particle size of the wax fine particles is within the above range, the slipperiness of the image receiving layer is improved, so that the handling property of the film material for electrophotographic printing image receiving is sufficient, and the print quality of the printed image and the printed image by the wax fine particles are sufficient. It is possible to minimize the influence of a decrease in adhesion between the image and the image receiving layer. When the particle size of the wax fine particles is less than the lower limit of the above range, the handling property and blocking resistance of the film material for electrophotographic printing image reception tend to deteriorate, and conversely, when the particle size exceeds the upper limit of the above range, the printed image is displayed. The print quality and the adhesion between the printed image and the image receiving layer tend to decrease.
本発明の受像層に用いられるワックス微粒子のワックスの種類は特に限定はされないが、少なくともある程度の滑性と硬さを有しているようなワックスを使用する事が好ましい。その様なワックスとしては、モンタン酸ワックス、フィッシャートロプシュワックス、ポリエチレンワックス、ポリプロピレンワックス、脂肪酸アミド系ワックス及びそれらの酸化物及び各種変性物などの合成ワックスを使用する事が好ましいがこれらに限定されない。前述したワックスのうちポリエチレンワックスと脂肪酸アミド系ワックスを本発明のワックス微粒子のワックスとして使用する事がより好ましい。 The type of wax of the wax fine particles used for the image receiving layer of the present invention is not particularly limited, but it is preferable to use a wax having at least a certain degree of slipperiness and hardness. As such a wax, it is preferable to use, but not limited to, a synthetic wax such as a montanic acid wax, a Fishertroph wax, a polyethylene wax, a polypropylene wax, a fatty acid amide wax, an oxide thereof, and various modified products. Of the waxes described above, it is more preferable to use polyethylene wax and fatty acid amide wax as the wax of the wax fine particles of the present invention.
本発明の受像層に用いられるワックス微粒子の原料であるポリエチレンワックスとは、特に限定はされないが重量平均分子量が１０００〜１００００程度の低分子量のポリエチレンの事であり、本発明者が検討した結果、受像層に添加すると電子写真方式印刷受像用フィルム素材のさばき性と耐ブロッキング性が非常に向上するだけでなく、湿式電子写真方式印刷と乾式電子写真方式印刷の両方で印刷画像の受像層に対する転写性や密着性をほとんど阻害しなかった。ポリエチレンワックスの種類としては、低密度ポリエチレンワックス（重合タイプ及び分解タイプ）、中密度ポリエチレンワックス、高密度ポリエチレンワックス、及び前記各種密度や製法の異なるポリエチレンワックスの酸化物や酸変性物である各種酸化ポリエチレンワックスや各種酸変性ポリエチレンワックスなどが挙げられるが、この中でも滑性や耐ブロッキング性や耐熱性に優れた高密度ポリエチレンワックスからなる微粒子を本発明の受像層に添加するワックス微粒子として使用する事が特に好ましい。 The polyethylene wax, which is a raw material for the wax fine particles used in the image receiving layer of the present invention, is a low molecular weight polyethylene having a weight average molecular weight of about 1000 to 10000, although it is not particularly limited. Addition to the image-receiving layer not only greatly improves the handling and blocking resistance of the film material for electrophotographic printing, but also transfers the printed image to the image-receiving layer in both wet electrophotographic printing and dry electrophotographic printing. Almost no inhibition of sex or adhesion. Types of polyethylene wax include low-density polyethylene wax (polymerization type and decomposition type), medium-density polyethylene wax, high-density polyethylene wax, and various oxidations such as oxides and acid-modified products of polyethylene wax having different densities and manufacturing methods. Examples thereof include polyethylene wax and various acid-modified polyethylene waxes. Among them, fine particles made of high-density polyethylene wax having excellent slipperiness, blocking resistance and heat resistance should be used as wax fine particles to be added to the image receiving layer of the present invention. Is particularly preferable.
本発明の受像層に用いられるワックス微粒子の原料である脂肪酸アミド系ワックスとは、高級脂肪酸とアミン類の縮合反応等によって生成されたワックスの事であり、その構造内に長鎖アルキル基とアミド基を有しており、本発明の受像層の樹脂成分であるダイマー酸系ポリアミド樹脂との親和性が高く、受像層に少量添加するだけで滑性と耐ブロッキング性が向上するだけでなく、湿式電子写真方式印刷と乾式電子写真方式印刷の両方で印刷画像の受像層に対する転写性や密着性をほとんど阻害しなかった。脂肪酸アミド系ワックスの種類としては、飽和脂肪酸アミド、不飽和脂肪酸アミド、飽和脂肪酸ビスアミド、不飽和脂肪酸ビスアミドなどが挙げられるが、この中でも滑性や耐ブロッキング性や耐熱性に優れた飽和脂肪酸ビスアミドからなる微粒子を本発明の受像層に添加するワックス微粒子として使用する事がより好ましく、より具体的にはメチレンビスステアリン酸アミド、エチレンビスステアリン酸アミド、ヘキサメチレンビスステアリン酸アミドのいずれかである事が特に好ましい。 The fatty acid amide-based wax, which is a raw material for the wax fine particles used in the image receiving layer of the present invention, is a wax produced by a condensation reaction between higher fatty acids and amines, and has a long-chain alkyl group and an amide in its structure. It has a group and has a high affinity with the dimer acid-based polyamide resin which is a resin component of the image receiving layer of the present invention. Not only the slipperiness and blocking resistance are improved by adding a small amount to the image receiving layer, but also Both wet electrophotographic printing and dry electrophotographic printing hardly impaired the transferability and adhesion of the printed image to the image receiving layer. Examples of the fatty acid amide wax include saturated fatty acid amides, unsaturated fatty acid amides, saturated fatty acid bisamides, and unsaturated fatty acid bisamides. Among them, saturated fatty acid bisamides having excellent slipperiness, blocking resistance, and heat resistance. It is more preferable to use the fine particles as wax fine particles to be added to the image receiving layer of the present invention, and more specifically, it is one of methylene bisstearic acid amide, ethylene bisstearic acid amide, and hexamethylene bisstearic acid amide. Is particularly preferable.
本発明の受像層におけるワックス微粒子の含有量は特に限定はされないが、受像層の全質量中の０．５〜５．０質量％の範囲である事が好ましく、１．０〜３．０質量％の範囲である事がより好ましい。受像層中におけるワックス微粒子の含有量が前記範囲内であれば、電子写真方式印刷受像用フィルム素材に優れたさばき性と耐ブロッキング性を付与し、さらに電子写真方式印刷受像用フィルム素材の各種印刷適性やフィルム基材と受像層との間の密着性及び印刷画像と受像層との間の密着性などを低下させる事もない。 The content of the wax fine particles in the image receiving layer of the present invention is not particularly limited, but is preferably in the range of 0.5 to 5.0% by mass, and 1.0 to 3.0% by mass in the total mass of the image receiving layer. It is more preferably in the range of%. When the content of wax fine particles in the image receiving layer is within the above range, excellent handling and blocking resistance are imparted to the electrophotographic printing image receiving film material, and various printing of the electrophotographic printing image receiving film material. It does not deteriorate the suitability, the adhesion between the film base material and the image receiving layer, and the adhesion between the printed image and the image receiving layer.
本発明の電子写真方式印刷受像用フィルム素材のさばき性は受像層の表面の動摩擦係数と関係性があり、表面性測定機ＨＥＩＤＯＮ−１４（新東科学株式会社製）を用いてＡＳＴＭ Ｄ１８９４に準拠した方法で本発明の受像層と標準のステンレス板との間に発生する動摩擦力を測定する事によって動摩擦係数を求めたところ、受像層とステンレス板との間の動摩擦係数が少なくとも０．５０以下である事が好ましく、０．４０以下である事がより好ましい。受像層とステンレス板の摩擦係数が前記範囲以下であれば、電子写真方式印刷受像用フィルム素材におけるさばき性の問題が大幅に発生し難くなる。 The handling property of the film material for electrophotographic printing of the present invention is related to the coefficient of dynamic friction on the surface of the image receiving layer, and conforms to ASTM D1894 using a surface property measuring machine HEIDON-14 (manufactured by Shinto Kagaku Co., Ltd.). When the coefficient of dynamic friction was obtained by measuring the dynamic friction force generated between the image receiving layer of the present invention and the standard stainless steel plate by the above method, the coefficient of dynamic friction between the image receiving layer and the stainless steel plate was at least 0.50 or less. It is preferably 0.40 or less, and more preferably 0.40 or less. When the friction coefficient between the image receiving layer and the stainless steel plate is not more than the above range, the problem of handleability in the film material for electrophotographic printing image receiving is less likely to occur.
本発明の受像層にはその他の副原料として、印刷画像の転写性や印刷画像と受像層との間の密着性や電子写真方式印刷受像用フィルム素材のさばき性や耐ブロッキング性等を向上させる為に、必要に応じて、シリカ、タルク、炭酸カルシウム、炭酸マグネシウム、水酸化アルミニウム、マイカなどの各種公知の無機フィラーを少量添加しても良い。またダイマー酸系ポリアミド樹脂の各種性能を補う為に、各種熱可塑性合成樹脂や各種有機フィラー等を別途少量添加しても良い。さらに受像層に使用しているダイマー酸系ポリアミド樹脂の酸化を防ぐ為の各種公知の酸化防止剤や、紫外線などによる受像層の劣化を防ぐ為の各種公知の紫外線吸収材や紫外線散乱材等を必要に応じて受像層に添加しても構わない。この様な副原料の受像層における含有量は特に限定はされないが、受像層全体質量の３５質量％以下である事が好ましく、１０質量％以下である事がより好ましい。 As other auxiliary materials, the image-receiving layer of the present invention improves the transferability of the printed image, the adhesion between the printed image and the image-receiving layer, the handling property of the film material for electrophotographic printing image receiving, and the blocking resistance. Therefore, various known inorganic fillers such as silica, talc, calcium carbonate, magnesium carbonate, aluminum hydroxide, and mica may be added in a small amount, if necessary. Further, in order to supplement various performances of the dimer acid-based polyamide resin, various thermoplastic synthetic resins, various organic fillers and the like may be separately added in a small amount. Furthermore, various known antioxidants for preventing oxidation of the dimer acid-based polyamide resin used for the image receiving layer, and various known ultraviolet absorbing materials and ultraviolet scattering materials for preventing deterioration of the image receiving layer due to ultraviolet rays and the like are used. It may be added to the image receiving layer as needed. The content of such an auxiliary raw material in the image receiving layer is not particularly limited, but is preferably 35% by mass or less, and more preferably 10% by mass or less of the total mass of the image receiving layer.
本発明の受像層全体の融点に関して本発明者らが検討したところ、受像層の融点（ＤＳＣ法）は特に限定はされないが７０〜１６０℃の範囲である事が好ましく、８０〜１５０℃の範囲である事がより好ましく、１００〜１５０℃の範囲である事が最も好ましい事が分かった。受像層の融点の範囲が前記範囲内であれば、特に湿式電子写真方式の印刷を行った際の印刷画像の受像層に対する転写性及び印刷画像と受像層との間の密着性が共に優れていて、さらに熱圧着ロール等に電子写真方式印刷受像用フィルム素材が巻きつく事が少なく、印字画像が熱圧着ロール等の熱によって歪むことも少なく、耐ブロッキング性に優れた電子写真方式印刷受像用フィルム素材を得る事が可能となる事を見出した。 When the present inventors examined the melting point of the entire image receiving layer of the present invention, the melting point of the image receiving layer (DSC method) is not particularly limited, but is preferably in the range of 70 to 160 ° C, preferably in the range of 80 to 150 ° C. It was found that the above is more preferable, and the range of 100 to 150 ° C. is most preferable. When the melting point range of the image receiving layer is within the above range, the transferability of the printed image to the image receiving layer and the adhesion between the printed image and the image receiving layer are both excellent, especially when printing by the wet electrophotographic method is performed. In addition, the film material for electrophotographic printing image reception is less likely to be wrapped around the heat crimping roll, etc., and the printed image is less likely to be distorted by the heat of the heat crimping roll, etc., and for electrophotographic printing image reception with excellent blocking resistance. We have found that it is possible to obtain film materials.
本発明の受像層は各種公知の塗装方法によって受像層用塗料をフィルム基材上に塗布した後に熱風乾燥機などによって乾燥することによって設けられる。受像層の乾燥後の塗布量は特に限定はされないが、０．５〜５．０ｇ／ｍ２の範囲である事が好ましく、１．０〜３．０ｇ／ｍ２の範囲である事がより好ましい。受像層の乾燥後の塗布量が前記範囲であれば、印刷適性とさばき性に優れ、さらに受像層とフィルム基材の密着性及び印刷画像と受像層の密着性が共に優れた電子写真方式印刷受像用フィルム素材を得る事が可能である。受像層の乾燥後の塗布量が前記範囲の下限を下回ると、電子写真方式印刷受像用フィルム素材の印刷適性と印刷画像と受像層との間の密着性が悪化する傾向があり、逆に受像層の乾燥後の塗布量が前記範囲の上限を上回ると受像層とフィルム基材の密着性や電子写真方式印刷受像用フィルム素材の耐ブロッキング性などが悪化する傾向がある。The image receiving layer of the present invention is provided by applying a coating material for an image receiving layer on a film substrate by various known coating methods and then drying it with a hot air dryer or the like. Coating amount after drying of the image-receiving layer is not particularly limited, it is preferably in the range of 0.5 to 5.0 g / m 2, and more is possible in the range of 1.0 to 3.0 g / m 2 preferable. If the coating amount of the image receiving layer after drying is within the above range, the printability and handling properties are excellent, and the adhesion between the image receiving layer and the film substrate and the adhesion between the printed image and the image receiving layer are both excellent in electrophotographic printing. It is possible to obtain a film material for image reception. When the amount of the image-receiving layer applied after drying is less than the lower limit of the above range, the printability of the film material for electrophotographic printing and the image-receiving layer tends to deteriorate, and conversely, the adhesion between the printed image and the image-receiving layer tends to deteriorate. If the coating amount of the layer after drying exceeds the upper limit of the above range, the adhesion between the image receiving layer and the film substrate and the blocking resistance of the film material for electrophotographic printing image receiving tend to deteriorate.
次に実施例及び比較例を挙げて本発明について具体的に説明するが、本発明は実施例に限定されるものではない。 Next, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to the Examples.
＜＜電子写真方式印刷受像用フィルム素材の作製方法＞＞
実施例及び比較例に使用する電子写真方式印刷受像用フィルム素材の作製方法について下記に詳細を説明する。<< Method of manufacturing film material for electrophotographic printing image reception >>
The method for producing the film material for electrophotographic printing image reception used in Examples and Comparative Examples will be described in detail below.
表１に実施例及び比較例に使用する電子写真方式印刷受像用フィルム素材の受像層に用いる各原料の詳細と各実施例及び比較例用の受像層用塗料の配合比率の詳細を示す。 Table 1 shows the details of each raw material used for the image receiving layer of the electrophotographic printing image receiving film material used in Examples and Comparative Examples, and the details of the blending ratio of the image receiving layer paint for each Example and Comparative Example.
＜実施例１の電子写真方式印刷受像用フィルム素材＞
表１に記載の実施例１の受像層用塗料の配合比率に従って、容器中にトルエンとイソプロピルアルコール（ＩＰＡ）をそれぞれ計量後投入して混合溶媒を作製した後に、ダイマー酸系ポリアミド樹脂１（軟化点１３０〜１４５℃）を計量して容器の混合溶媒中に投入して攪拌機で攪拌しながら完全にダイマー酸系ポリアミド樹脂１を溶解した後に、さらに飽和脂肪酸ビスアミド（融点１４５℃）を計量して容器に投入して全てが均一に混合されるまで攪拌機で充分に攪拌混合を行うことによって実施例１の受像層用塗料を作製した。作製した受像層用塗料をバーコーターで厚み１００μｍの２軸延伸ポリエチレンテレフタレートフィルム（ＰＥＴフィルム）の一方の面に乾燥後の受像層の付着量が３．０ｇ／ｍ２となるように塗布した後に、熱風ドライヤーによって溶媒を揮発させて受像層を設けて実施例１で使用する電子写真方式印刷受像用フィルム素材を作製し、さらに同様の方法で厚み２００μｍの２軸延伸ポリプロピレンフィルム（ＯＰＰフィルム）の一方の面に乾燥後の付着量が３．０ｇ／ｍ２の受像層を設ける事によって実施例１で使用するもう１種類の電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image receiving in Example 1>
According to the blending ratio of the image-receiving layer coating material of Example 1 shown in Table 1, toluene and isopropyl alcohol (IPA) are weighed and added into the container to prepare a mixed solvent, and then the dimer acid-based polyamide resin 1 (softened). Points 130 to 145 ° C.) are weighed and put into the mixed solvent of the container, and the dimer acid-based polyamide resin 1 is completely dissolved while stirring with a stirrer, and then the saturated fatty acid bisamide (melting point 145 ° C.) is further measured. The coating material for the image receiving layer of Example 1 was prepared by putting it in a container and sufficiently stirring and mixing with a stirrer until everything was uniformly mixed. After applying the produced paint for the image receiving layer to one surface of a biaxially stretched polyethylene terephthalate film (PET film) having a thickness of 100 μm with a bar coater so that the amount of the image receiving layer adhered after drying is 3.0 g / m 2. The solvent was volatilized by a hot air dryer to provide an image receiving layer, and the film material for electrophotographic printing image receiving used in Example 1 was prepared. Further, in the same manner, a biaxially stretched polypropylene film (OPP film) having a thickness of 200 μm was prepared. Another type of film material for electrophotographic printing image reception used in Example 1 was produced by providing an image receiving layer having an adhesion amount of 3.0 g / m 2 after drying on one surface.
＜実施例２〜４の電子写真方式印刷受像用フィルム素材＞
実施例１の受像層用塗料配合中のダイマー酸系ポリアミド樹脂１をそれぞれダイマー酸系ポリアミド樹脂２（軟化点９０〜９８℃）、ダイマー酸系ポリアミド樹脂３（軟化点１００〜１１５℃）、ダイマー酸系ポリアミド樹脂４（軟化点１５５〜１７０℃）に置き換えて実施例２〜４の受像層用塗料を実施例１の受像層用塗料と同じ方法によって作製し、さらにそれらの受像層用塗料を使用して実施例１の電子写真方式印刷受像用フィルム素材と同じ方法で厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムの一方の面にそれぞれ乾燥後の付着量が３．０ｇ／ｍ２である受像層を設ける事によって、実施例２〜４で使用する電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image reception in Examples 2 to 4>
The dimer acid-based polyamide resin 1 in the image-receiving layer coating film of Example 1 is divided into a dimer acid-based polyamide resin 2 (softening point 90 to 98 ° C.), a dimer acid-based polyamide resin 3 (softening point 100 to 115 ° C.), and a dimer, respectively. The image-receiving layer paints of Examples 2 to 4 were prepared by replacing with the acid-based polyamide resin 4 (softening point 155 to 170 ° C.) by the same method as the image-receiving layer paint of Example 1, and further, the image-receiving layer paints were prepared. The amount of adhesion after drying is 3.0 g / m 2 on one surface of a PET film having a thickness of 100 μm and an OPP film having a thickness of 200 μm, respectively, in the same manner as the film material for electrophotographic printing image receiving in Example 1. By providing the image receiving layer, the film material for electrophotographic printing image receiving used in Examples 2 to 4 was produced.
＜実施例５の電子写真方式印刷受像用フィルム素材＞
実施例１の受像層用塗料配合中の飽和脂肪酸ビスアミドを、高密度ポリエチレンワックス（融点１２５℃）に置き換えて実施例５の受像層用塗料を実施例１の受像層用塗料と同じ方法によって作製し、この受像層用塗料を使用して実施例１の電子写真方式印刷受像用フィルム素材と同じ方法で厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムの一方の面にそれぞれ乾燥後の付着量が３．０ｇ／ｍ２である受像層を設ける事によって、実施例５で使用する電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image receiving in Example 5>
The saturated fatty acid bisamide in the image-receiving layer paint of Example 1 was replaced with a high-density polyethylene wax (melting point 125 ° C.) to prepare the image-receiving layer paint of Example 5 by the same method as the image-receiving layer paint of Example 1. Then, using this paint for the image receiving layer, the amount of adhesion after drying is applied to one surface of the PET film having a thickness of 100 μm and the OPP film having a thickness of 200 μm in the same manner as the film material for electrophotographic printing image receiving in Example 1. By providing the image receiving layer of 3.0 g / m 2 , the film material for electrophotographic printing image receiving used in Example 5 was produced.
＜比較例１の電子写真方式印刷受像用フィルム素材＞
比較例１の電子写真方式印刷受像用フィルム素材は、受像層を何も設けていない厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムをそのまま電子写真方式印刷受像用フィルム素材として用いる。<Film material for electrophotographic printing image reception in Comparative Example 1>
As the film material for electrophotographic printing image receiving in Comparative Example 1, a PET film having a thickness of 100 μm and an OPP film having a thickness of 200 μm without any image receiving layer are used as they are as the film material for electrophotographic printing image receiving.
＜比較例２の電子写真方式印刷受像用フィルム素材＞
比較例２の電子写真方式印刷受像用フィルム素材は、実施例１の受像層用塗料配合から飽和脂肪酸ビスアミドを除いた配合である比較例２の受像層用塗料を実施例１の受像層用塗料と同様の方法によって作製し、この受像層用塗料を使用して実施例１の電子写真方式印刷受像用フィルム素材と同じ方法で厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムの一方の面にそれぞれ乾燥後の付着量が３．０ｇ／ｍ２である受像層を設ける事によって、比較例２で使用する電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image reception in Comparative Example 2>
The film material for electrophotographic printing image reception of Comparative Example 2 is the image-receiving layer paint of Comparative Example 2, which is a composition obtained by removing the saturated fatty acid bisamide from the image-receiving layer paint formulation of Example 1. Using this paint for the image receiving layer, the PET film having a thickness of 100 μm and the OPP film having a thickness of 200 μm can be used on one surface in the same manner as the film material for electrophotographic printing image receiving in Example 1. By providing an image receiving layer having an adhesion amount of 3.0 g / m 2 after drying, an electrophotographic printing image receiving film material used in Comparative Example 2 was produced.
＜比較例３の電子写真方式印刷受像用フィルム素材＞
比較例３の電子写真方式印刷受像用フィルム素材は、特許文献１に記載されている湿式電子写真方式印刷用の受像層を設けた受像用フィルム素材であり、受像層はポリビニルアルコール樹脂とメジアン径Ｄ５０が１０ｎｍのコロイダルシリカで構成される。比較例３の受像層用塗料は、表１の比較例３の受像層用塗料配合の配合比率に基づいて、容器中に溶媒である純水を計量後投入し、容器中の純水を攪拌機で攪拌しながら計量したポリビニルアルコール樹脂を投入して樹脂が純水に完全に溶解するまで攪拌を続ける。前記容器中のポリビニルアルコール樹脂溶液を攪拌機で攪拌しながら別途計量したコロイダルシリカを容器に投入して全てが均一に混合されるまで攪拌機で充分に攪拌混合を行うことによって比較例３の受像層用塗料を作製した。この受像層用塗料を使用して実施例１の電子写真方式印刷受像用フィルム素材と同じ方法で厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムの一方の面にそれぞれ乾燥後の付着量が３．０ｇ／ｍ２である受像層を設ける事によって、比較例３で使用する電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image reception in Comparative Example 3>
The film material for electrophotographic printing in Comparative Example 3 is an image-receiving film material provided with an image-receiving layer for wet electrophotographic printing described in Patent Document 1, and the image-receiving layer is made of a polyvinyl alcohol resin and a median diameter. D 50 is composed of colloidal silica at 10 nm. The paint for the image-receiving layer of Comparative Example 3 is prepared by adding pure water as a solvent into the container after weighing based on the blending ratio of the paint for the image-receiving layer of Comparative Example 3 in Table 1, and stirring the pure water in the container. Add the polyvinyl alcohol resin weighed while stirring with, and continue stirring until the resin is completely dissolved in pure water. While stirring the polyvinyl alcohol resin solution in the container with a stirrer, separately weighed colloidal silica is put into the container, and the mixture is sufficiently stirred and mixed with the stirrer until all are uniformly mixed, whereby the image receiving layer of Comparative Example 3 is used. The paint was made. Using this paint for the image receiving layer, the amount of adhesion after drying to one surface of the PET film having a thickness of 100 μm and the OPP film having a thickness of 200 μm was increased in the same manner as the film material for electrophotographic printing image receiving in Example 1. By providing the image receiving layer of 0 g / m 2 , the film material for electrophotographic printing image receiving used in Comparative Example 3 was produced.
＜比較例４の電子写真方式印刷受像用フィルム素材＞
比較例４の電子写真方式印刷受像用フィルム素材は一般的な乾式電子写真方式印刷用の受像層を設けた受像用フィルム素材であり、受像層は飽和共重合ポリエステル樹脂と合成シリカで構成されている。比較例４の受像層用塗料は、表１の比較例４の受像層用塗料配合の配合比率に基づいて、容器中に溶媒であるトルエンとメチルエチルケトン（ＭＥＫ）を計量後投入し、容器中の溶媒を攪拌機で攪拌しながら計量した飽和共重合ポリエステル樹脂を投入して樹脂が溶媒に完全に溶解するまで攪拌を続ける。前記容器中の飽和共重合ポリエステル樹脂溶液を攪拌機で攪拌しながら別途計量した合成シリカを容器に投入して全てが均一に混合されるまで攪拌機で充分に攪拌混合を行うことによって比較例４の受像層用塗料を作製した。この受像層用塗料を使用して実施例１の電子写真方式印刷受像用フィルム素材と同じ方法で厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムの一方の面にそれぞれ乾燥後の付着量が３．０ｇ／ｍ２である受像層を設ける事によって、比較例４で使用する電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image reception in Comparative Example 4>
The film material for electrophotographic printing in Comparative Example 4 is an image-receiving film material provided with an image-receiving layer for general dry electrophotographic printing, and the image-receiving layer is composed of a saturated copolymer resin and synthetic silica. There is. In the image-receiving layer paint of Comparative Example 4, the solvents toluene and methyl ethyl ketone (MEK) were weighed and charged into the container based on the blending ratio of the image-receiving layer paint of Comparative Example 4 in Table 1, and the container was charged. The saturated copolymerized polyester resin weighed while stirring the solvent with a stirrer is added, and stirring is continued until the resin is completely dissolved in the solvent. While stirring the saturated copolymer resin solution in the container with a stirrer, separately weighed synthetic silica is put into the container, and the mixture is sufficiently stirred and mixed with the stirrer until all are uniformly mixed. A layer paint was prepared. Using this paint for the image receiving layer, the amount of adhesion after drying to one surface of the PET film having a thickness of 100 μm and the OPP film having a thickness of 200 μm was increased in the same manner as the film material for electrophotographic printing image receiving in Example 1. By providing the image receiving layer of 0 g / m 2 , the film material for electrophotographic printing image receiving used in Comparative Example 4 was produced.
＜比較例５の電子写真方式印刷受像用フィルム素材＞
実施例１の受像層用塗料配合中の飽和脂肪酸ビスアミドをパラフィンワックス（融点７２℃）に置き換えて比較例５の受像層用塗料を実施例１の受像層用塗料と同じ方法によって作製し、この受像層用塗料を使用して実施例１の電子写真方式印刷受像用フィルム素材と同じ方法で厚み１００μｍのＰＥＴフィルムと厚み２００μｍのＯＰＰフィルムの一方の面にそれぞれ乾燥後の付着量が３．０ｇ／ｍ２である受像層を設ける事によって、比較例５で使用する電子写真方式印刷受像用フィルム素材を作製した。<Film material for electrophotographic printing image reception in Comparative Example 5>
The saturated fatty acid bisamide in the image-receiving layer paint of Example 1 was replaced with paraffin wax (melting point 72 ° C.) to prepare the image-receiving layer paint of Comparative Example 5 by the same method as the image-receiving layer paint of Example 1. Using the paint for the image receiving layer, the amount of adhesion after drying is 3.0 g on one surface of the PET film having a thickness of 100 μm and the OPP film having a thickness of 200 μm in the same manner as the electrophotographic printing film material of Example 1. By providing the image receiving layer of / m 2 , the film material for electrophotographic printing image receiving used in Comparative Example 5 was produced.
＜＜電子写真方式印刷受像用フィルム素材の評価＞＞
作製した各電子写真方式印刷受像用フィルム素材について下記に示す方法によって各種評価を行った。なお比較例１に関しては受像層を有さないので、フィルム基材を受像層とみなす事によって印刷適正と印刷画像と受像層間の密着性の代替評価を行った。<< Evaluation of film material for electrophotographic printing image reception >>
Various evaluations were made on each of the produced film materials for electrophotographic printing and image reception by the methods shown below. Since Comparative Example 1 does not have an image receiving layer, an alternative evaluation of printability and adhesion between the printed image and the image receiving layer was performed by regarding the film base material as the image receiving layer.
＜さばき性の評価＞
電子写真方式印刷受像用フィルム素材のさばき性について下記の条件で試験を行い、その結果について下記の評価基準によって電子写真方式印刷受像用フィルム素材のさばき性の評価を行った。
（印刷条件）
電子写真方式印刷受像用フィルム素材を株式会社日本ＨＰ（ヒューレットパッカード）製の湿式電子写真方式印刷機である「ｉｎｄｉｇｏ（登録商標）７９００」の給紙部に１０００枚積層させた状態でセットし、１０００枚全てに写真画像などを含むテストパターンの印刷を行い、給紙時の重送を目視で観察した。
（評価基準）
Ａ・・・給紙の際に重送が全く発生せず、その兆候も見られなかった。
Ｂ・・・給紙の際に重送が発生しなかったが、その兆候が時々みられた。
Ｃ・・・給紙の際に稀に重送がみられた。
Ｄ・・・給紙の際に頻繁に重送がみられた。<Evaluation of handling>
The handling property of the film material for electrophotographic printing image reception was tested under the following conditions, and the results were evaluated for the handling property of the film material for electrophotographic printing image receiving according to the following evaluation criteria.
(Printing conditions)
The film material for electrophotographic printing image reception is set in a state where 1000 sheets are laminated on the paper feed section of "indigo (registered trademark) 7900", which is a wet electrophotographic printing machine manufactured by Nippon HP Co., Ltd. (Hewlett-Packard). A test pattern including a photographic image was printed on all 1000 sheets, and double feeding at the time of feeding was visually observed.
(Evaluation criteria)
A ... No double feeding occurred during paper feeding, and no sign of it was observed.
B ... Double feeding did not occur during paper feeding, but there were occasional signs of this.
C ... In rare cases, double feeding was observed during paper feeding.
D ... Double feeding was frequently observed during paper feeding.
＜耐ブロッキング性の評価＞
電子写真方式印刷受像用フィルム素材の耐ブロッキング性について下記の条件で試験を行い、その結果について下記の評価基準によって電子写真方式印刷受像用フィルム素材の耐ブロッキング性の評価を行った。
（試験条件）
フィルム基材の一方の面に受像層を設けた電子写真方式印刷受像用フィルム素材を用いて、受像層と受像層を設けていないフィルム基材の背面側がそれぞれ対面するように電子写真方式印刷受像用フィルム素材を１０枚積層させたものに８０ｇ／ｃｍ２の荷重をかけ、気温４５℃湿度８５％ＲＨに設定した恒温槽の中で４８時間静置した後のブロッキングの状態について下記の評価基準によって評価することにより電子写真方式印刷受像用フィルム素材の耐ブロッキング性の評価を行った。
（評価基準）
Ａ・・・受像層の成分がフィルム基材背面側へ全く移行していない。
Ｂ・・・受像層の成分のフィルム基材背面側への移行が目視では確認できないが、受像層とフィルム基材の剥離が重い。
Ｃ・・・受像層の成分のフィルム基材背面側への移行が少量ながら目視で確認できる。
Ｄ・・・受像層の成分がフィルム基材背面側へ多量に移行している。<Evaluation of blocking resistance>
The blocking resistance of the film material for electrophotographic printing image reception was tested under the following conditions, and the results were evaluated for the blocking resistance of the film material for electrophotographic printing image reception according to the following evaluation criteria.
(Test condition)
Using a film material for electrophotographic printing with an image receiving layer provided on one surface of the film substrate, electrophotographic printing receiving images so that the image receiving layer and the back side of the film substrate without the image receiving layer face each other. The following evaluation criteria are used for the blocking state after applying a load of 80 g / cm 2 to a stack of 10 film materials for printing and allowing them to stand for 48 hours in a constant temperature bath set at a temperature of 45 ° C and a humidity of 85% RH. The blocking resistance of the film material for electrophotographic printing image reception was evaluated by the above evaluation.
(Evaluation criteria)
A ... The components of the image receiving layer have not migrated to the back side of the film substrate at all.
B ... The transfer of the components of the image receiving layer to the back surface side of the film base material cannot be visually confirmed, but the peeling between the image receiving layer and the film base material is heavy.
C ... The migration of the components of the image receiving layer to the back surface side of the film substrate can be visually confirmed although the amount is small.
D ... A large amount of components of the image receiving layer are transferred to the back surface side of the film substrate.
＜フィルム基材と受像層間の密着性＞
電子写真方式印刷受像用フィルム素材におけるフィルム基材と受像層との間の密着性について下記の条件で試験を行い、その結果について下記の評価基準によって電子写真方式印刷受像用フィルム素材のフィルム基材と受像層間の密着性の評価を行った。
（試験条件）
電子写真方式印刷受像用フィルム素材の受像層に対して、巾１８ｍｍのセロハンテープ（ニチバン株式会社製）を空気が入らないように張り合わせ、張り合わせたセロハンテープの背面に対し自重５００ｇのローラーを押し当ててしっかり密着させてから１分以上放置し、その後張り合わせたセロハンテープを剥離角１８０度で１ｍ／秒の速さで受像層から強制剥離する。セロハンテープを剥離した電子写真方式印刷受像用フィルム素材の受像層の状態について下記に示す評価基準に基づいて評価することによってフィルム基材と受像層間の密着性について評価を行った。
（評価基準）
Ａ・・・受像層の剥離が全く見られない。
Ｂ・・・受像層の剥離が極一部に見られる事がある。
Ｃ・・・受像層の剥離が一部に明確に見られる。
Ｄ・・・受像層がほぼ全面で剥離する。<Adhesion between film substrate and image receiving layer>
The adhesion between the film base material and the image receiving layer in the electrophotographic printing image receiving film material was tested under the following conditions, and the results were tested according to the following evaluation criteria. The adhesion between the image receiving layers was evaluated.
(Test condition)
A cellophane tape (manufactured by Nichiban Co., Ltd.) with a width of 18 mm is attached to the image receiving layer of the film material for electrophotographic printing so that air does not enter, and a roller with a weight of 500 g is pressed against the back surface of the attached cellophane tape. The cellophane tape is forcibly peeled from the image receiving layer at a peeling angle of 180 degrees and at a speed of 1 m / sec. The adhesion between the film substrate and the image receiving layer was evaluated by evaluating the state of the image receiving layer of the electrophotographic printing image receiving film material from which the cellophane tape was peeled off based on the evaluation criteria shown below.
(Evaluation criteria)
A ... No peeling of the image receiving layer is observed.
B ... Detachment of the image receiving layer may be seen in a very small part.
C ... Peeling of the image receiving layer is clearly seen in a part.
D ... The image receiving layer is peeled off on almost the entire surface.
＜印刷画像と受像層間の密着性（湿式電子写真方式印刷及び乾式電子写真方式印刷）＞
電子写真方式印刷受像用フィルム素材における印刷画像と受像層との間の密着性について下記の条件で試験を行い、その結果について下記の評価基準によって電子写真方式印刷受像用フィルム素材の印刷画像と受像層間の密着性の評価を行った。本評価においては、湿式電子写真方式印刷で行った印刷画像と受像層間の密着性と、乾式電子写真方式印刷で行った印刷画像と受像層間の密着性とをそれぞれ行った。
（試験条件）
電子写真方式印刷受像用フィルム素材に対して、湿式電子写真方式印刷として株式会社日本ＨＰ製湿式電子写真方式印刷機「ｉｎｄｉｇｏ７９００」によって写真画像などを含むテストパターンを１ショット印刷によって印刷を行って湿式電子写真方式印刷による印刷画像と受像層間の密着性評価用サンプルを作製し、さらに乾式電子写真方式印刷としてキャノン株式会社製のレーザープリンタ「ＬＢＰ９６００Ｃ」によって写真画像などを含むテストパターンの印刷を行い乾式電子写真方式印刷による印刷画像と受像層間の密着性評価用サンプルを作製した。作製した各評価用サンプルの印刷画像が設けられている受像層の部位に対して、巾１８ｍｍのセロハンテープ（ニチバン株式会社製）を空気が入らないように張り合わせ、張り合わせたセロハンテープの背面に対し自重５００ｇのローラーを押し当ててしっかり密着させてから１分以上放置し、その後張り合わせたセロハンテープを剥離角１８０度で１ｍ／秒の速さで受像層から強制剥離する。セロハンテープを剥離した各密着性評価用サンプルの印刷画像の状態について下記に示す評価基準に基づいて評価することによって電子写真方式印刷受像用フィルム素材の印刷画像と受像層間の密着性について評価を行った。
（評価基準）
Ａ・・・印刷画像の剥離が全く見られない。
Ｂ・・・印刷画像の剥離が極一部に僅かに見られる。
Ｃ・・・印刷画像の剥離が一部に明確に見られる。
Ｄ・・・印刷画像がほぼ全面で剥離する。<Adhesion between printed image and image receiving layer (wet electrophotographic printing and dry electrophotographic printing)>
The adhesion between the printed image and the image receiving layer in the electrophotographic printing image receiving film material was tested under the following conditions, and the results were evaluated as the printed image and image receiving of the electrophotographic printing image receiving film material according to the following evaluation criteria. The adhesion between the layers was evaluated. In this evaluation, the adhesion between the printed image and the image receiving layer performed by the wet electrophotographic printing method and the adhesion between the printed image and the image receiving layer performed by the dry electrophotographic method printing were performed, respectively.
(Test condition)
Electrophotographic printing A test pattern including a photographic image is printed by one-shot printing on a film material for image reception by a wet electrophotographic printing machine "indigo7900" manufactured by Nippon HP Co., Ltd. as wet electrophotographic printing. A sample for evaluating the adhesion between the printed image and the image-receiving layer is prepared by electrophotographic printing, and a test pattern including a photographic image is printed by the laser printer "LBP9600C" manufactured by Canon Co., Ltd. as dry electrophotographic printing. A sample for evaluating the adhesion between the printed image and the image receiving layer by electrophotographic printing was prepared. A cellophane tape (manufactured by Nichiban Co., Ltd.) with a width of 18 mm was attached to the part of the image receiving layer on which the printed image of each evaluation sample was prepared so as not to allow air to enter, and to the back surface of the attached cellophane tape. A roller having a weight of 500 g is pressed against the roller to bring it into close contact with the image, and then the cellophane tape is left for 1 minute or more. The state of the printed image of each adhesion evaluation sample from which the cellophane tape has been peeled off is evaluated based on the evaluation criteria shown below to evaluate the adhesion between the printed image and the image receiving layer of the film material for electrophotographic printing image reception. It was.
(Evaluation criteria)
A ... No peeling of the printed image is seen.
B ... A slight peeling of the printed image is observed in a very small part.
C ... Peeling of the printed image is clearly seen in a part.
D ... The printed image is peeled off on almost the entire surface.
＜印刷適性（湿式電子写真方式印刷及び乾式電子写真方式印刷）＞
電子写真方式印刷受像用フィルム素材の印刷適性について下記の条件で試験を行い、その結果について下記の評価基準によって電子写真方式印刷受像用フィルム素材の印刷適性の評価を行った。本評価においては、湿式電子写真方式印刷と、乾式電子写真方式印刷に関してそれぞれの印刷適性の評価を行った。
（試験条件）
電子写真方式印刷受像用フィルム素材に対して、湿式電子写真方式印刷として株式会社日本ＨＰ製の湿式電子写真方式印刷機「ｉｎｄｉｇｏ７９００」によって写真画像などを含むテストパターンを１ショット印刷によって印刷を行って湿式電子写真方式印刷の印刷適性評価用サンプルを作製し、さらに乾式電子写真方式印刷としてキャノン株式会社製のレーザープリンタ「ＬＢＰ９６００Ｃ」によって写真画像などを含むテストパターンの印刷を行い乾式電子写真方式印刷による印刷適性評価用サンプルを作製した。作製した各印刷適性評価用サンプルに印刷された画像を目視で確認し、下記に示す評価基準に基づいて評価することによって電子写真方式印刷受像用フィルム素材の印刷適性について評価を行った。
（評価基準）
Ａ・・・印刷画像の転写不良、滲み、カスレ、熱による歪などが全く見られない。
Ｂ・・・印刷画像の転写不良、滲み、カスレ、熱による歪の少なくともいずれか一つが印字画像の極一部に僅かに見られる。
Ｃ・・・印刷画像の転写不良、滲み、カスレ、熱による歪の少なくともいずれか一つが印字画像の一部に明確に見られる。
Ｄ・・・印刷画像の転写不良、滲み、カスレ、熱による歪の少なくともいずれか一つが印字画像の大部分で見られる。<Printability (wet electrophotographic printing and dry electrophotographic printing)>
The printability of the film material for electrophotographic print image reception was tested under the following conditions, and the printability of the film material for electrophotographic print image reception was evaluated based on the following evaluation criteria. In this evaluation, the printability of wet electrophotographic printing and dry electrophotographic printing was evaluated.
(Test condition)
Electrophotographic printing For image receiving film material, a test pattern including photographic images is printed by one-shot printing with the wet electrophotographic printing machine "indigo7900" manufactured by Nippon HP Co., Ltd. as wet electrophotographic printing. A sample for evaluating the printability of wet electrophotographic printing was prepared, and as dry electrophotographic printing, a test pattern including photographic images was printed by the laser printer "LBP9600C" manufactured by Canon Co., Ltd. by dry electrophotographic printing. A sample for evaluation of printability was prepared. The printability of the film material for electrophotographic printing image reception was evaluated by visually confirming the images printed on each of the produced printability evaluation samples and evaluating them based on the evaluation criteria shown below.
(Evaluation criteria)
A: No transfer failure, bleeding, blurring, heat distortion, etc. of the printed image are observed.
B ... At least one of transfer failure, blurring, blurring, and heat distortion of the printed image is slightly observed in a very small part of the printed image.
C ... At least one of transfer failure, blurring, blurring, and heat distortion of the printed image is clearly seen in a part of the printed image.
D ... At least one of transfer failure, blurring, blurring, and heat distortion of the printed image is observed in most of the printed image.
本発明の実施例及び比較例の電子写真方式印刷受像用フィルム素材の各種評価結果について表２に示す。 Table 2 shows various evaluation results of the film materials for electrophotographic printing image reception in Examples and Comparative Examples of the present invention.
実施例１〜５に示すように、フィルム基材の少なくとも一方の面に、ダイマー酸系ポリアミド樹脂と融点（ＪＩＳ Ｋ７１２１（ＤＳＣ法））が９０〜１６０℃の範囲であるワックス微粒子を含有する受像層を設けた電子写真方式印刷受像用フィルム素材であれば、湿式電子写真方式印刷において優れた印刷適性とさばき性を有し、各種フィルム基材と受像層との密着性及び印刷画像と受像層との密着性に優れ、さらに乾式電子写真方式印刷にも使用可能である事が分かる。 As shown in Examples 1 to 5, an image receiving image containing dimer acid-based polyamide resin and wax fine particles having a melting point (JIS K7121 (DSC method)) in the range of 90 to 160 ° C. on at least one surface of the film substrate. An electrophotographic printing image-receiving film material provided with a layer has excellent printability and handling properties in wet electrophotographic printing, and the adhesion between various film substrates and the image-receiving layer and the printed image and the image-receiving layer. It can be seen that it has excellent adhesion to and can be used for dry electrophotographic printing.
比較例１のように、フィルム基材に受像層を設けないでそのまま使用するとフィルム基材表面は非常に平滑である為に枚葉シート状に加工して積み重ねた時にフィルム基材とフィルム基材の間に全く空気が抱き込まれずフィルム基材同士がくっ付いてしまう事が原因で重送が稀に発生する。また湿式電子写真方式印刷に関しては印刷画像自体が全く転写せず、乾式電子写真方式印刷に関しては印刷画像が転写するものの、印刷画像とフィルム基材の密着性に乏しく、セロハンテープで容易に剥離してしまう。 As in Comparative Example 1, when the film base material is used as it is without providing the image receiving layer, the surface of the film base material is very smooth. Therefore, when the film base material is processed into a single-wafer sheet and stacked, the film base material and the film base material are used. Double feeding rarely occurs because the film substrates stick to each other without air being trapped between them. In addition, in wet electrophotographic printing, the printed image itself is not transferred at all, and in dry electrophotographic printing, the printed image is transferred, but the adhesion between the printed image and the film substrate is poor, and it is easily peeled off with cellophane tape. It ends up.
比較例２のように、受像層にワックス微粒子を何も添加しないと、受像層の動摩擦係数が高いままでさばき性が非常に悪くなり、また電子写真方式印刷受像用フィルム素材の耐ブロッキング性も悪化した。 If no wax fine particles are added to the image receiving layer as in Comparative Example 2, the handling property becomes very poor while the dynamic friction coefficient of the image receiving layer remains high, and the blocking resistance of the film material for electrophotographic printing image receiving is also improved. It got worse.
比較例３のように、湿式電子写真方式印刷用の受像層をフィルム基材上に設けて電子写真方式印刷受像用フィルム素材を作製したところ、ＰＥＴフィルムをフィルム基材とした電子写真方式印刷受像用フィルム素材に関しては、ＰＥＴフィルムと受像層との間の密着性に優れていて、湿式電子写真方式印刷において印刷適性及び印刷画像と受像層との密着性が良好であるが、乾式電子写真方式印刷においては印刷適性に優れているものの、印刷画像と受像層の密着性に乏しかった。またＯＰＰフィルムをフィルム基材とした電子写真方式印刷受像用フィルム素材に関しては、ＯＰＰフィルムと受像層との間の密着性が全く無く、その為に印刷を行ってもＯＰＰフィルムと受像層との間がセロハンテープで容易に剥離してしまう。なお上記表２の比較例３のＯＰＰフィルムをフィルム基材とした電子写真方式印刷受像用フィルム素材における「印刷画像と受像層間の密着性（湿式）」及び「印刷画像と受像層間の密着性（乾式）」において評価が無いのは、受像層に印刷が転写しているものの、ＯＰＰフィルムと受像層との間がセロハンテープで容易に剥離してしまうために、印刷画像と受像層間の密着性が測れない為である。 As in Comparative Example 3, when an image receiving layer for wet electrophotographic printing was provided on a film substrate to prepare a film material for electrophotographic printing image reception, an electrophotographic printing image receiving using a PET film as a film substrate was produced. Regarding the film material for use, the adhesion between the PET film and the image receiving layer is excellent, and the printability and the adhesion between the printed image and the image receiving layer are good in wet electrophotographic printing, but the dry electrophotographic method In printing, the printability was excellent, but the adhesion between the printed image and the image receiving layer was poor. Further, regarding the film material for electrophotographic printing image receiving using the OPP film as the film base material, there is no adhesion between the OPP film and the image receiving layer, and therefore, even if printing is performed, the OPP film and the image receiving layer are not adhered to each other. The space is easily peeled off with cellophane tape. In the film material for electrophotographic print image reception using the OPP film of Comparative Example 3 in Table 2 as the film base material, "adhesion between the printed image and the image receiving layer (wet)" and "adhesion between the printed image and the image receiving layer (adhesion between the printed image and the image receiving layer) The reason why there is no evaluation in "dry type)" is that although the print is transferred to the image receiving layer, the adhesion between the printed image and the image receiving layer is easily peeled off by the cellophane tape between the OPP film and the image receiving layer. This is because it cannot be measured.
比較例４のように、乾式電子写真方式印刷用の受像層をフィルム基材上に設けて電子写真方式印刷受像用フィルム素材を作製したところ、湿式電子写真方式印刷を行った際に印刷画像が全く転写しなかった。またＯＰＰフィルムをフィルム基材とした電子写真方式印刷受像用フィルム素材に関しては、ＯＰＰフィルムと受像層との間の密着性が乏しく、乾式電子写真方式印刷によって印刷画像は受像層に転写するものの、ＯＰＰフィルムと受像層との間がセロハンテープで剥離しやすい傾向にあった。 As in Comparative Example 4, when an image receiving layer for dry electrophotographic printing was provided on a film substrate to prepare a film material for electrophotographic printing image reception, a printed image was produced when wet electrophotographic printing was performed. It did not transfer at all. Further, regarding the film material for electrophotographic printing image receiving using the OPP film as the film base material, the adhesion between the OPP film and the image receiving layer is poor, and although the printed image is transferred to the image receiving layer by the dry electrophotographic printing, There was a tendency for the cellophane tape to easily peel off between the OPP film and the image receiving layer.
比較例５のように、ワックス微粒子を融点が７２℃のパラフィンワックスからなるワックス微粒子を使用すると、実施例１と比較して、さばき性と耐ブロッキング性がやや低下し、さらに湿式電子写真方式印刷及び乾式電子写真方式印刷の両方において印刷時の熱圧着ロール等の熱によって印刷画像に歪が発生したり、印刷画像と受像層との間の密着性が低下したりするようになり、特に乾式電子写真方式印刷における印刷画像の歪は大きく悪化した。 When wax fine particles made of paraffin wax having a melting point of 72 ° C. are used as in Comparative Example 5, the handling property and blocking resistance are slightly lowered as compared with Example 1, and wet electrophotographic printing is performed. In both dry electrophotographic printing and dry electrophotographic printing, heat from a heat-bonded roll or the like during printing causes distortion in the printed image and reduces the adhesion between the printed image and the image receiving layer, especially in the dry type. The distortion of the printed image in electrophotographic printing was greatly exacerbated.
本発明における電子写真方式印刷受像用フィルム素材は、湿式電子写真方式印刷機及び乾式電子写真方式印刷機の被印刷媒体として利用する事が可能であり、各種印刷広告物、カタログ、パンフレット、リーフレット、モックアップサンプル、各種装丁用表紙材、クリアファイルなどに使用される。 The film material for electrophotographic printing image reception in the present invention can be used as a printing medium for wet electrophotographic printing machines and dry electrophotographic printing machines, and various printed advertisements, catalogs, brochures, leaflets, etc. Used for mockup samples, cover materials for various bindings, clear files, etc.
１；フィルム基材
２；受像層
３；電子写真方式印刷受像用フィルム素材
４；印刷画象（トナー）1;
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| JP2001242658A (en) * | 2000-03-01 | 2001-09-07 | Daicel Chem Ind Ltd | Transfer sheet for electrophotographic printer |
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| JP2007328034A (en) * | 2006-06-06 | 2007-12-20 | Fuji Xerox Co Ltd | Electrophotographic recording medium and image forming method |
| JP2016105138A (en) * | 2014-12-01 | 2016-06-09 | 大日精化工業株式会社 | Method for producing liquid toner receiving layer-forming coating liquid |
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- 2019-04-25 JP JP2019094840A patent/JP2020181177A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| JPH09319131A (en) * | 1996-03-29 | 1997-12-12 | Canon Inc | Light-transmitting recording material for electrophotography and thermal fixing method |
| JP2001242658A (en) * | 2000-03-01 | 2001-09-07 | Daicel Chem Ind Ltd | Transfer sheet for electrophotographic printer |
| JP2002214817A (en) * | 2001-01-23 | 2002-07-31 | Kimoto & Co Ltd | Light transmissive recording material for electrophotography |
| JP2007328034A (en) * | 2006-06-06 | 2007-12-20 | Fuji Xerox Co Ltd | Electrophotographic recording medium and image forming method |
| JP2016105138A (en) * | 2014-12-01 | 2016-06-09 | 大日精化工業株式会社 | Method for producing liquid toner receiving layer-forming coating liquid |
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