JP7089700B2 - Printed matter and printing method - Google Patents

Printed matter and printing method Download PDF

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JP7089700B2
JP7089700B2 JP2018157733A JP2018157733A JP7089700B2 JP 7089700 B2 JP7089700 B2 JP 7089700B2 JP 2018157733 A JP2018157733 A JP 2018157733A JP 2018157733 A JP2018157733 A JP 2018157733A JP 7089700 B2 JP7089700 B2 JP 7089700B2
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protrusion
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JP2020029076A (en
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方哉 石田
嵩貴 平田
翔平 波越
千草 佐藤
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Seiko Epson Corp
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本発明は、印刷物及び印刷方法に関する。 The present invention relates to a printed matter and a printing method.

現在、画像に触感を付与するために、その画像の表面に凸部（突起）を形成する技術が種々提案されている。例えば近年においては、ラベルの絵柄層の表面に凸部を形成するように樹脂をパターン状にコーティングすることにより、ラベルの表面に触感性や断熱性を付与する技術が提案されている（特許文献１参照）。 At present, various techniques for forming convex portions (projections) on the surface of an image have been proposed in order to give a tactile sensation to the image. For example, in recent years, a technique has been proposed in which a resin is coated in a pattern so as to form a convex portion on the surface of a pattern layer of a label to impart tactile sensation and heat insulating property to the surface of the label (Patent Documents). 1).

特開２００４－２０５７６８号公報Japanese Unexamined Patent Publication No. 2004-205768

しかし、特許文献１に記載されたような従来の技術は、絵柄層の表面に一定のパターンで凸部を設けるものであり、ある印刷領域の触感を他の印刷領域の触感と異ならせるものではない。このため、上記技術を採用しても、例えば絵柄の明度に応じて触感を異ならせるというような触感制御を実現させることはできなかった。 However, in the conventional technique as described in Patent Document 1, convex portions are provided on the surface of the pattern layer in a certain pattern, and the tactile sensation of a certain printed area is different from the tactile sensation of another printed area. do not have. Therefore, even if the above technique is adopted, it is not possible to realize tactile control such that the tactile sensation is different depending on the brightness of the pattern, for example.

本発明は、かかる事情に鑑みてなされたものであり、ある印刷領域の触感を他の印刷領域の触感と異ならせることができる印刷物及び印刷方法を提供する。 The present invention has been made in view of such circumstances, and provides a printed matter and a printing method capable of making the tactile sensation of a certain printed area different from the tactile sensation of another printed area.

本発明に係る印刷物は、基材と、基材の表面に複数の突起が配列されている第一の印刷領域と、基材の表面に複数の突起が配列されている第二の印刷領域と、を備えるものであって、第一の印刷領域における突起の配列間隔、サイズ、平面形状の何れか一つ以上は、第二の印刷領域における突起の配列間隔、サイズ、平面形状と異なるものである。突起の高さは、１６μｍ以上である。 The printed matter according to the present invention includes a base material, a first printed area in which a plurality of protrusions are arranged on the surface of the base material, and a second printed area in which a plurality of protrusions are arranged on the surface of the base material. , And any one or more of the protrusion arrangement spacing, size, and planar shape in the first print area is different from the protrusion arrangement spacing, size, and planar shape in the second print area. be. The height of the protrusion is 16 μm or more.

本発明に係る印刷方法は、基材の表面に、複数の突起が配列されている第一の印刷領域と、複数の突起が配列されている第二の印刷領域と、を形成する方法であって、第一の印刷領域における突起の配列間隔、サイズ、平面形状の何れか一つ以上を、第二の印刷領域における突起の配列間隔、サイズ、平面形状と異ならせる工程と、突起の高さを１６μｍ以上にする工程と、を含むものである。 The printing method according to the present invention is a method of forming a first printing area in which a plurality of protrusions are arranged and a second printing area in which a plurality of protrusions are arranged on the surface of a base material. The process of making one or more of the protrusion arrangement spacing, size, and planar shape in the first print area different from the protrusion arrangement spacing, size, and planar shape in the second print area, and the height of the protrusions. Includes a step of increasing the size to 16 μm or more.

本発明の実施形態に係る印刷物の絵柄を示す図。The figure which shows the picture of the printed matter which concerns on embodiment of this invention. 本発明の実施形態に係る印刷方法を説明するためのフローチャート。The flowchart for demonstrating the printing method which concerns on embodiment of this invention. 本発明の実施例に係る印刷物の突起構造のレイアウトを示す図。The figure which shows the layout of the protrusion structure of the printed matter which concerns on embodiment of this invention.

以下、本発明の実施形態に係る印刷物１について、図面を用いて説明する。なお、本発明は、かかる実施形態によって制約されるものではない。 Hereinafter, the printed matter 1 according to the embodiment of the present invention will be described with reference to the drawings. The present invention is not limited by such embodiments.

まず、本実施形態に係る印刷物１の構成について説明する。印刷物１は、図１に示すように、基材１０と、基材１０の表面に設けられた複数の印刷領域（第一の印刷領域２１及び第二の印刷領域２２）と、を備えるものである。 First, the configuration of the printed matter 1 according to the present embodiment will be described. As shown in FIG. 1, the printed matter 1 includes a base material 10 and a plurality of print areas (first print area 21 and second print area 22) provided on the surface of the base material 10. be.

基材１０としては、その表面に印刷を施すことが可能な剛性を有する板状の部材であり、例えば合成樹脂製のシートを採用することができる。基材１０に用いられる合成樹脂は、アクリル、ポリエチレン、ポリ塩化ビニル、ＡＢＳ樹脂等に代表される汎用プラスティック、ポリカーボネート、ポリエチレンテレフタレート等に代表されるエンジニアリング・プラスチック、ポリイミド、ポリエーテルエーテルケトン等に代表されるスーパーエンジニアリングプラスチック、等から選ぶことができる。また、合成樹脂製のシートの他にも、木材、ＭＤＦ（中密度繊維板）、ガラス、金属、セラミック等で基材１０を構成することができる。 The base material 10 is a plate-shaped member having rigidity capable of printing on the surface thereof, and for example, a sheet made of synthetic resin can be adopted. The synthetic resin used for the base material 10 is represented by general-purpose plastics represented by acrylic, polyethylene, polyvinyl chloride, ABS resin and the like, engineering plastics represented by polycarbonate, polyethylene terephthalate and the like, polyimide, polyether ether ketone and the like. You can choose from super engineering plastics, etc. In addition to the synthetic resin sheet, the base material 10 can be made of wood, MDF (medium density fiberboard), glass, metal, ceramic, or the like.

本実施形態における基材１０の表面には、図１に示すように、比較的明度の高い第一の印刷領域２１と、比較的明度の低い第二の印刷領域２２と、を有する木目模様が印刷されている。これら第一の印刷領域２１及び第二の印刷領域２２の表面には、各々、複数の透明な突起が配列されている。なお、本実施形態においては、第一の印刷領域２１と第二の印刷領域２２の「明度」を異ならせた例を示したが、これら印刷領域の「色相」を異ならせてもよい。これら明度や色相は、例えばＬ*ａ*ｂ*表色系で表すことができる。 As shown in FIG. 1, on the surface of the base material 10 in the present embodiment, a wood grain pattern having a first printed area 21 having a relatively high lightness and a second printed area 22 having a relatively low lightness is formed. It is printed. A plurality of transparent protrusions are arranged on the surfaces of the first print area 21 and the second print area 22. In this embodiment, an example in which the "brightness" of the first print area 21 and the second print area 22 are different is shown, but the "hue" of these print areas may be different. These brightness and hue can be expressed by, for example, L * a * b * color system.

第一の印刷領域２１における突起の配列間隔は、第二の印刷領域２２における突起の配列間隔と異なっている。具体的には、第一の印刷領域２１における突起の配列間隔は、第二の印刷領域２２における突起の配列間隔よりも大きくなっている。このように第一の印刷領域２１の突起の配列間隔を、第二の印刷領域２２の突起の配列間隔よりも大きくすることにより、第一の印刷領域２１の凹凸感（ザラザラ感、ジャリジャリ感、ゴツゴツ感、ボコボコ感）を第二の印刷領域２２の凹凸感よりも強くすることができる。これらの凹凸感の強弱は高さ違いとしても認識され得るので、第一の印刷領域２１は第二の印刷領域２２よりも高いという触感を得ることもできる。従って、突起の高さを変えることなく、印刷領域２１・２２の触感を変えることができ、また、触感としての高さの違いを得ることができる。 The arrangement spacing of the protrusions in the first print area 21 is different from the arrangement spacing of the protrusions in the second print area 22. Specifically, the arrangement spacing of the protrusions in the first print area 21 is larger than the arrangement spacing of the protrusions in the second print area 22. By making the arrangement spacing of the protrusions of the first print area 21 larger than the arrangement spacing of the protrusions of the second print area 22 in this way, the unevenness feeling (roughness, jerky feeling, and the feeling of roughness) of the first print area 21 can be obtained. The ruggedness and bumpiness) can be made stronger than the unevenness of the second print area 22. Since the strength of these unevennesses can be recognized as differences in height, it is possible to obtain a tactile sensation that the first print area 21 is higher than the second print area 22. Therefore, the tactile sensation of the printed areas 21 and 22 can be changed without changing the height of the protrusions, and the difference in height as the tactile sensation can be obtained.

突起の配列間隔は、４０μｍ以上２ｍｍ以下に設定される。突起の配列間隔が４０μｍ未満であると、皮膚の触覚センサのサイズに比べて小さくなりすぎるために、触感を制御するのに適さない。さらに、通常の印刷法で形成可能なサイズよりも小さくなることから、安価で大面積な領域の触感制御に適さなくなってしまうため好ましくない。一方、突起の配列間隔が２ｍｍを超えると、皮膚の触覚センサの間隔に比べて著しく大きくなるために、物体表面の凹凸として認識され易く、触感の制御に適さなくなってしまうため好ましくない。突起の配列間隔は、８０μｍ以上１．５ｍｍ以下に設定されるのが好ましい。 The arrangement spacing of the protrusions is set to 40 μm or more and 2 mm or less. If the arrangement spacing of the protrusions is less than 40 μm, it is too small compared to the size of the tactile sensor of the skin, and is not suitable for controlling the tactile sensation. Further, since the size is smaller than the size that can be formed by a normal printing method, it is not suitable for tactile control of an inexpensive and large area, which is not preferable. On the other hand, if the arrangement spacing of the protrusions exceeds 2 mm, it is significantly larger than the spacing of the tactile sensor on the skin, and is easily recognized as unevenness on the surface of the object, which is not suitable for controlling the tactile sensation. The arrangement spacing of the protrusions is preferably set to 80 μm or more and 1.5 mm or less.

第一の印刷領域２１における突起の高さは、第二の印刷領域２２における突起の高さと同一である。このように双方の印刷領域２１・２２の突起の高さを同一にすることにより、突起の摩耗を抑制することができる。突起の高さは、１６μｍ以上１５ｍｍ以下に設定される。突起の高さが１６μｍ未満であると、凹凸感が得られないため好ましくない。一方、突起の高さが１５ｍｍを超えると、指で印刷領域２１・２２に触れた際の突起構造の変形量が大きくなり過ぎ、突起の破損等が発生し易くなるため、好ましくない。突起の高さは、５０μｍ以上１０ｍｍ以下に設定されるのが好ましい。 The height of the protrusion in the first print area 21 is the same as the height of the protrusion in the second print area 22. By making the heights of the protrusions of both the print areas 21 and 22 the same in this way, it is possible to suppress the wear of the protrusions. The height of the protrusion is set to 16 μm or more and 15 mm or less. If the height of the protrusion is less than 16 μm, a feeling of unevenness cannot be obtained, which is not preferable. On the other hand, if the height of the protrusion exceeds 15 mm, the amount of deformation of the protrusion structure when the print areas 21 and 22 are touched with a finger becomes too large, and the protrusion is likely to be damaged, which is not preferable. The height of the protrusion is preferably set to 50 μm or more and 10 mm or less.

突起の平面形状としては、略円形状、略正方形状、略長方形状等を採用することができる。本実施形態においては、第一の印刷領域２１における突起のサイズ（平面視における最大寸法）を、第二の印刷領域２２における突起のサイズ（平面視における最大寸法）と同じサイズに設定し、その平面形状を略円形状としているが、第一の印刷領域２１における突起のサイズを、第二の印刷領域２２における突起のサイズよりも大きく設定することも可能である。第一の印刷領域２１における突起のサイズを、第二の印刷領域２２における突起のサイズよりも大きくすることにより、第一の印刷領域２１の突起への指の引っ掛かりをより強くすることができ、第一の印刷領域２１の凹凸感と第二の印刷領域２２の凹凸感との触感の違いをより強調することができる。また、このときに第一の印刷領域２１の突起の平面形状を略正方形状に変更することも可能である。そして、第一の印刷領域２１における突起と、第二の印刷領域２２における突起と、の配列間隔、サイズ、平面形状を同時に複数異ならせてもよく、それぞれ単独で異ならせてもよく、いずれにしても第一の印刷領域２１の凹凸感と第二の印刷領域２２の凹凸感との触感の違いを得ることができる。 As the planar shape of the protrusion, a substantially circular shape, a substantially square shape, a substantially rectangular shape, or the like can be adopted. In the present embodiment, the size of the protrusion in the first print area 21 (maximum dimension in the plan view) is set to the same size as the size of the protrusion in the second print area 22 (maximum dimension in the plan view), and the size thereof is set. Although the planar shape is a substantially circular shape, it is also possible to set the size of the protrusion in the first print area 21 to be larger than the size of the protrusion in the second print area 22. By making the size of the protrusion in the first print area 21 larger than the size of the protrusion in the second print area 22, it is possible to make the finger caught on the protrusion in the first print area 21 more strongly. It is possible to further emphasize the difference in tactile sensation between the unevenness of the first print area 21 and the unevenness of the second print area 22. At this time, it is also possible to change the planar shape of the protrusion of the first print area 21 to a substantially square shape. Then, the protrusions in the first print area 21 and the protrusions in the second print area 22 may have a plurality of different arrangement spacings, sizes, and planar shapes at the same time, or may be different from each other independently. Even so, it is possible to obtain a difference in tactile sensation between the unevenness of the first print area 21 and the unevenness of the second print area 22.

突起のサイズは、４０μｍ以上５００μｍ以下に設定される。突起のサイズが４０μｍ未満であると、指で印刷領域２１・２２に触れた際の突起構造の変形量が大きくなり過ぎ、突起の破損等が発生し易くなるため、好ましくない。一方、突起のサイズが５００μｍを超えると、突起の変形量が小さくなって凹凸感のみが強調されてしまい、第一の印刷領域２１と第二の印刷領域２２の触感を異ならせることが難しくなるため、好ましくない。なお、サイズが５００μｍを超える突起は、従来の加工法（型転写法等）で容易に実現することができることから、従来技術の枠を超えるものではない。 The size of the protrusion is set to 40 μm or more and 500 μm or less. If the size of the protrusion is less than 40 μm, the amount of deformation of the protrusion structure when the print areas 21 and 22 are touched with a finger becomes too large, and the protrusion is likely to be damaged, which is not preferable. On the other hand, when the size of the protrusion exceeds 500 μm, the amount of deformation of the protrusion becomes small and only the unevenness is emphasized, and it becomes difficult to make the tactile sensations of the first print area 21 and the second print area 22 different. Therefore, it is not preferable. It should be noted that protrusions having a size of more than 500 μm can be easily realized by a conventional processing method (type transfer method or the like), and therefore do not exceed the framework of the prior art.

突起のアスペクト比（幅寸法に対する高さの比）は、０．４以上３０以下に設定される。突起のアスペクト比が０．４未満であると、突起の変形量が小さくなって凹凸感のみが強調されてしまい、第一の印刷領域２１と第二の印刷領域２２の触感を異ならせることが難しくなるため、好ましくない。なお、アスペクト比０．４未満の突起は、従来の加工法（型転写法等）で容易に実現することができることから、従来技術の枠を超えるものではない。一方、突起のアスペクト比が３０を超えると、指で印刷領域２１・２２に触れた際の突起構造の変形量が大きくなり過ぎ、突起の破損等が発生し易くなるため、好ましくない。 The aspect ratio (ratio of height to width dimension) of the protrusion is set to 0.4 or more and 30 or less. If the aspect ratio of the protrusions is less than 0.4, the amount of deformation of the protrusions becomes small and only the unevenness is emphasized, which may make the tactile sensations of the first print area 21 and the second print area 22 different. It is not preferable because it becomes difficult. It should be noted that the protrusions having an aspect ratio of less than 0.4 can be easily realized by a conventional processing method (type transfer method or the like), and therefore do not exceed the framework of the prior art. On the other hand, if the aspect ratio of the protrusions exceeds 30, the amount of deformation of the protrusion structure when the print areas 21 and 22 are touched with a finger becomes too large, and the protrusions are likely to be damaged, which is not preferable.

第一の印刷領域２１及び第二の印刷領域２２に設けられる突起は、例えば、紫外線硬化樹脂インクをインクジェット法により複数層積層して形成することができる。紫外線硬化樹脂インクとしては、一般的に、光重合性樹脂（モノマー、オリゴマー等）、光重合開始剤および助剤（重合禁止剤、調整剤等）から構成され、例えば、光重合性樹脂として、（メタ）アクリル系モノマー／オリゴマー等を採用することができる。紫外線硬化樹脂インクは、通常、１００％硬化されて塗膜となることから、突起構造を形成するのに適している。また、紫外線硬化樹脂インクとは別の樹脂（例えば、合成ワックス系等のホットメルトインク、ウレタン樹脂、あるいは、エポキシ樹脂等の水系樹脂インク等）で突起を形成することもできる。 The protrusions provided in the first print area 21 and the second print area 22 can be formed by, for example, laminating a plurality of layers of ultraviolet curable resin ink by an inkjet method. The ultraviolet curable resin ink is generally composed of a photopolymerizable resin (monomer, oligomer, etc.), a photopolymerization initiator and an auxiliary agent (polymerization inhibitor, modifier, etc.), and for example, as a photopolymerizable resin. (Meta) Acrylic monomers / oligomers and the like can be adopted. The ultraviolet curable resin ink is usually 100% cured to form a coating film, and is therefore suitable for forming a protrusion structure. Further, the protrusions can be formed with a resin other than the ultraviolet curable resin ink (for example, a hot melt ink such as a synthetic wax, a urethane resin, or a water-based resin ink such as an epoxy resin).

インクで凹凸構造を形成する際、一層積層する毎に塗膜を固化することが望ましい。紫外線硬化樹脂インクを用いる場合には、一層形成する毎に紫外線を照射して固化し、引き続きその直上にインクを配置し、固化を繰り返して凹凸構造を形成する。水系樹脂インクの場合は積層毎に乾燥・固化を行うことで同様に凹凸構造を形成する。 When forming an uneven structure with ink, it is desirable to solidify the coating film each time one layer is laminated. When an ultraviolet curable resin ink is used, each layer is irradiated with ultraviolet rays to solidify it, and then the ink is placed directly above the layer, and solidification is repeated to form an uneven structure. In the case of water-based resin ink, an uneven structure is similarly formed by drying and solidifying each layer.

なお、本実施形態においては、基材の表面に、明度の異なる二種類の印刷領域（第一の印刷領域２１及び第二の印刷領域２２）を設け、これら二種類の印刷領域における突起の配列間隔を異ならせた例を示したが、印刷領域は二種類に限られるものではない。例えば、基材の表面に明度や色相の異なる印刷領域を三種類以上設け、これら三種類以上の印刷領域における突起の配列間隔を各々異ならせることもできる。 In this embodiment, two types of printing areas (first printing area 21 and second printing area 22) having different brightness are provided on the surface of the base material, and the protrusions in these two types of printing areas are arranged. Although the example in which the intervals are different is shown, the print area is not limited to two types. For example, it is possible to provide three or more types of print areas having different brightness and hue on the surface of the base material, and to make the arrangement spacing of the protrusions in these three or more types of print areas different.

また、本実施形態においては、基材１０の表面に木目模様が印刷されているが、突起構造を形成する前に、突起構造と同様の透明な紫外線硬化樹脂インクを木目模様の全面を覆うようにコートした後に、同一の紫外線硬化樹脂インクにより突起構造を形成することも可能である。これにより、基材１０に対する突起構造の密着性を向上することが可能となり、手の指等で接触する際の耐久性をより向上することが出来る。さらに、顔料を含む紫外線硬化樹脂インクにより木目模様を印刷し、さらに同様な材料系からなる透明な紫外線硬化樹脂インクで突起構造形成することにより、全面を透明紫外線硬化樹脂で覆うことなく突起構造の密着性を向上することが可能となる。 Further, in the present embodiment, the wood grain pattern is printed on the surface of the base material 10, but before forming the protrusion structure, the same transparent ultraviolet curable resin ink as the protrusion structure is applied to cover the entire surface of the wood grain pattern. It is also possible to form a protrusion structure with the same ultraviolet curable resin ink after coating with. As a result, it is possible to improve the adhesion of the protrusion structure to the base material 10, and it is possible to further improve the durability when the protrusion structure is in contact with the fingers or the like. Furthermore, by printing a wood grain pattern with an ultraviolet curable resin ink containing a pigment and forming a protrusion structure with a transparent ultraviolet curable resin ink made of the same material system, the entire surface of the protrusion structure is not covered with the transparent ultraviolet curable resin. It is possible to improve the adhesion.

また、本実施形態においては、異なる印刷領域毎に突起構造の配列間隔やサイズ、あるいは、平面形状を変えることで触感を制御した場合について述べたが、本発明はこれに限るものではなく、突起構造の材料物性を変えて、変形量の小さい、あるいは、大きい材料を用いて形成することにより、突起の配列間隔やサイズ、あるいは、平面形状を変えることなく触感を制御できることは明らかである。具体的には、延伸性の高い、あるいは、低い紫外線硬化樹脂インクの差を用いる、あるいは、紫外線硬化樹脂インクに対して透明セラミック粒子を添加して膜物性を変える、等により突起の物性を変更して触感を制御することが出来る。 Further, in the present embodiment, the case where the tactile sensation is controlled by changing the arrangement interval and size of the protrusion structure or the planar shape for each different print area has been described, but the present invention is not limited to this, and the protrusion is not limited to this. It is clear that the tactile sensation can be controlled without changing the arrangement spacing and size of the protrusions or the planar shape by changing the material properties of the structure and using a material having a small or large amount of deformation. Specifically, the physical properties of the protrusions are changed by using the difference between the UV curable resin inks having high or low stretchability, or by adding transparent ceramic particles to the UV curable resin inks to change the film properties. The tactile sensation can be controlled.

次に、図２を用いて、基材１０の表面に第一の印刷領域２１及び第二の印刷領域２２を形成して印刷物１を得る方法（印刷方法）について説明する。 Next, a method (printing method) of forming a first print region 21 and a second print region 22 on the surface of the base material 10 to obtain a printed matter 1 will be described with reference to FIG.

まず、基材１０を調製する（基材調製工程）。基材１０としては、既に述べたように、合成樹脂製のシートを採用することができる。次いで、基材１０の表面に、絵柄を印刷する（絵柄印刷工程）。絵柄としては、図１に示すような木目模様を採用することができる。続いて、基材１０の表面に印刷した絵柄のうち比較的明度の高い第一の印刷領域２１と、比較的明度の低い第二の印刷領域２２と、の双方に、複数の透明な突起を配列する（突起配列工程）。この際、突起の高さを１６μｍ以上にする一方、第一の印刷領域２１における突起の配列間隔を、第二の印刷領域２２における突起の配列間隔と異ならせるようにする。各突起は、既に述べたように、紫外線硬化樹脂インクをインクジェット法により複数層積層して形成することができる。 First, the base material 10 is prepared (base material preparation step). As the base material 10, as described above, a sheet made of synthetic resin can be adopted. Next, a pattern is printed on the surface of the base material 10 (pattern printing step). As the pattern, a wood grain pattern as shown in FIG. 1 can be adopted. Subsequently, a plurality of transparent protrusions are formed on both the first printed area 21 having a relatively high lightness and the second printed area 22 having a relatively low lightness among the patterns printed on the surface of the base material 10. Arrange (projection arrangement step). At this time, the height of the protrusions is set to 16 μm or more, while the arrangement spacing of the protrusions in the first print area 21 is made different from the arrangement spacing of the protrusions in the second print area 22. As described above, each protrusion can be formed by laminating a plurality of layers of ultraviolet curable resin ink by an inkjet method.

以上説明した実施形態に係る印刷物１においては、第一の印刷領域２１の配列間隔が、第二の印刷領域２２の配列間隔と異なっているため、第一の印刷領域２１の触感を、第二の印刷領域２２の触感と異ならせることができる。具体的には、第一の印刷領域２１の配列間隔を、第二の印刷領域２２の配列間隔よりも大きくすることにより、第一の印刷領域２１の凹凸感を第二の印刷領域２２の凹凸感よりも強くすることができる。従って、突起の高さを変えることなく、印刷領域２１・２２の触感を変えることができる。また、第一の印刷領域２１における突起のサイズを、第二の印刷領域２２における突起のサイズよりも大きくすることにより、第一の印刷領域２１の突起への指の引っ掛かりをより強くすることができ、第一の印刷領域２１の凹凸感を第二の印刷領域２２の凹凸感よりも強くすることができる。 In the printed matter 1 according to the above-described embodiment, since the arrangement spacing of the first print area 21 is different from the arrangement spacing of the second print area 22, the tactile sensation of the first print area 21 is the second. It can be different from the tactile sensation of the print area 22 of. Specifically, by making the arrangement interval of the first print area 21 larger than the arrangement interval of the second print area 22, the unevenness of the first print area 21 is changed to the unevenness of the second print area 22. It can be stronger than the feeling. Therefore, the tactile sensation of the printed areas 21 and 22 can be changed without changing the height of the protrusions. Further, by making the size of the protrusion in the first print area 21 larger than the size of the protrusion in the second print area 22, it is possible to make the finger caught on the protrusion in the first print area 21 more strongly. The unevenness of the first print area 21 can be made stronger than the unevenness of the second print area 22.

また、以上説明した実施形態に係る印刷物１においては、第一の印刷領域２１における突起の高さを、第二の印刷領域２２における突起の高さと同一にしている。一方の印刷領域２１の突起を他方の印刷領域２２の突起よりも高くすると、高くした方の突起が摩耗し易くなるが、双方の印刷領域２１・２２の突起の高さを同一にすることにより、突起の摩耗を抑制することができる。 Further, in the printed matter 1 according to the embodiment described above, the height of the protrusion in the first print area 21 is the same as the height of the protrusion in the second print area 22. When the protrusion of one print area 21 is made higher than the protrusion of the other print area 22, the raised protrusion is likely to be worn, but by making the heights of the protrusions of both print areas 21 and 22 the same, , It is possible to suppress the wear of protrusions.

続いて、図３を用いて、本発明の実施例について説明する。 Subsequently, an embodiment of the present invention will be described with reference to FIG.

基材１０としての合成樹脂製のシートの表面に、紫外線硬化樹脂インクをインクジェット法により複数積層して、図３に示す３種類のパターンＡ、Ｂ、Ｃの樹脂突起構造体を形成した。各樹脂突起は、シート表面の同一箇所に、紫外線硬化樹脂インクを少なくとも３回積層して形成したものであり、積層する際の１回目の樹脂突起の直径を約１１０μｍ、２回目以降の樹脂突起の直径を約８０μｍに設定した。また、各樹脂突起の高さをいずれも０．５ｍｍに設定した。各パターンが形成される領域はいずれも、平面視正方形（１５ｍｍ×１５ｍｍ）状を呈する領域とした。紫外線硬化樹脂インクとしては、単官能アクリルアミド化合物、アクリレートオリゴマー、光重合開始剤、光重合界禁止剤、界面活性剤を含むものを採用した。 A plurality of ultraviolet curable resin inks were laminated on the surface of a synthetic resin sheet as the base material 10 by an inkjet method to form resin protrusion structures of three types of patterns A, B, and C shown in FIG. Each resin protrusion is formed by laminating ultraviolet curable resin ink at the same location on the sheet surface at least three times, and the diameter of the first resin protrusion at the time of laminating is about 110 μm, and the second and subsequent resin protrusions are formed. The diameter of the was set to about 80 μm. Further, the height of each resin protrusion was set to 0.5 mm. The region where each pattern is formed is a region exhibiting a square view (15 mm × 15 mm) in a plan view. As the ultraviolet curable resin ink, one containing a monofunctional acrylamide compound, an acrylate oligomer, a photopolymerization initiator, a photopolymerization boundary inhibitor, and a surfactant was adopted.

パターンＡは、平面視略円形状（直径約１１０μｍ）の樹脂突起を１５０ｄｐｉ間隔（配列間隔約０．１７ｍｍ）で基材１０の表面の所定領域に配置したものである。パターンＢは、平面視略矩形状（一辺の長さ約４４０μｍ）の樹脂突起を３７．５ｄｐｉ間隔（配列間隔約０．６８ｍｍ）で基材１０の表面の所定領域に配置したものである。パターンＣは、基材１０の表面の所定領域にパターンＡを形成した上に、平面視略矩形状（一辺の長さ約５５０μｍ）の樹脂突起を１５ｄｐｉ間隔（配列間隔約１．６９ｍｍ）で配置したものである。 In the pattern A, resin protrusions having a substantially circular shape in a plan view (diameter of about 110 μm) are arranged in a predetermined region on the surface of the base material 10 at intervals of 150 dpi (arrangement interval of about 0.17 mm). In the pattern B, resin protrusions having a substantially rectangular shape in a plan view (length of one side of about 440 μm) are arranged in a predetermined region on the surface of the base material 10 at a spacing of 37.5 dpi (arrangement spacing of about 0.68 mm). In the pattern C, the pattern A is formed in a predetermined region on the surface of the base material 10, and resin protrusions having a substantially rectangular shape in a plan view (one side length of about 550 μm) are arranged at 15 dpi intervals (arrangement interval of about 1.69 mm). It was done.

３種類のパターンＡ、Ｂ、Ｃの触感を確認したところ、パターンＡは、基材１０と比較してサラサラした触感を提供するものであるのに対し、パターンＣは、ゴムのような触感を提供するものであった。これは、パターンＣに含まれる大きな樹脂突起のパターンが指表面に軽く引っ掛かるためと考えられる。パターンＢは、パターンＡとパターンＣの中間のような触感を提供するものであった。 When the tactile sensations of the three types of patterns A, B, and C were confirmed, the pattern A provided a smooth tactile sensation as compared with the base material 10, whereas the pattern C had a rubber-like tactile sensation. It was to provide. It is considered that this is because the pattern of the large resin protrusions contained in the pattern C is lightly caught on the finger surface. Pattern B provided a tactile sensation between pattern A and pattern C.

本発明は、以上の実施形態に限定されるものではなく、かかる実施形態に当業者が適宜設計変更を加えたものも、本発明の特徴を備えている限り、本発明の範囲に包含される。すなわち、かかる実施形態が備える各要素及びその配置、材料、条件、形状、サイズ等は、例示したものに限定されるわけではなく適宜変更することができる。また、かかる実施形態が備える各要素は、技術的に可能な限りにおいて組み合わせることができ、これらを組み合わせたものも本発明の特徴を含む限り本発明の範囲に包含される。 The present invention is not limited to the above embodiments, and those having a design modification appropriately by those skilled in the art are also included in the scope of the present invention as long as they have the features of the present invention. .. That is, each element included in the embodiment and its arrangement, material, condition, shape, size, and the like are not limited to those exemplified, and can be appropriately changed. Further, the elements included in such an embodiment can be combined as much as technically possible, and the combination thereof is also included in the scope of the present invention as long as the features of the present invention are included.

１…印刷装置、１０…基材、２１…第一の印刷領域、２２…第二の印刷領域、Ｓ３…突起配列工程 1 ... Printing device, 10 ... Substrate, 21 ... First printing area, 22 ... Second printing area, S3 ... Projection arrangement process

Claims (10)

基材と、前記基材の表面に複数の突起が配列されている第一の印刷領域と、前記基材の表面に複数の突起が配列されている第二の印刷領域と、を備える印刷物であって、
前記第一の印刷領域における前記突起の配列間隔、平面視における最大寸法、平面形状の何れか一つ以上は、前記第二の印刷領域における前記突起の配列間隔、平面視における最大寸法、平面形状と異なり、
前記突起の高さは、１６μｍ以上であり、
前記第一の印刷領域及び前記第二の印刷領域には、画像が印刷されており、
前記第一の印刷領域に印刷された前記画像の明度又は色相は、前記第二の印刷領域に印刷された前記画像の明度又は色相と異なる、印刷物。 A printed matter comprising a base material, a first printed area in which a plurality of protrusions are arranged on the surface of the base material, and a second printed area in which a plurality of protrusions are arranged on the surface of the base material. There,
One or more of the arrangement spacing of the protrusions in the first print area , the maximum dimension in the plan view , and the planar shape is the arrangement spacing of the protrusions in the second print area , the maximum dimension in the plan view , and the planar shape. Unlike
The height of the protrusion is 16 μm or more, and the height is 16 μm or more.
An image is printed in the first print area and the second print area.
A printed matter in which the brightness or hue of the image printed in the first print area is different from the brightness or hue of the image printed in the second print area . 前記突起は、透明である、請求項１に記載の印刷物。 The printed matter according to claim 1, wherein the protrusions are transparent. 前記突起の配列間隔は、４０μｍ以上２ｍｍ以下である、請求項１又は２に記載の印刷物。 The printed matter according to claim 1 or 2, wherein the arrangement spacing of the protrusions is 40 μm or more and 2 mm or less. 前記突起の配列間隔は、８０μｍ以上１．５ｍｍ以下である、請求項１又は２に記載の印刷物。 The printed matter according to claim 1 or 2, wherein the arrangement spacing of the protrusions is 80 μm or more and 1.5 mm or less. 前記突起の高さは、１５ｍｍ以下である、請求項１から３の何れか一項に記載の印刷物。 The printed matter according to any one of claims 1 to 3, wherein the height of the protrusion is 15 mm or less. 前記突起の高さは、５０μｍ以上１０ｍｍ以下である、請求項１から３の何れか一項に記載の印刷物。 The printed matter according to any one of claims 1 to 3, wherein the height of the protrusion is 50 μm or more and 10 mm or less. 前記第一の印刷領域における前記突起の高さは、前記第二の印刷領域における前記突起の高さと同一である、請求項１に記載の印刷物。 The printed matter according to claim 1, wherein the height of the protrusion in the first printed area is the same as the height of the protrusion in the second printed area. 前記第一の印刷領域における前記突起の配列間隔は、前記第二の印刷領域における前記突起の配列間隔よりも大きく、
前記第一の印刷領域における前記突起の平面視における最大寸法は、前記第二の印刷領域における前記突起の平面視における最大寸法よりも大きい、請求項１から７の何れか一項に記載の印刷物。 The arrangement spacing of the protrusions in the first print area is larger than the arrangement spacing of the protrusions in the second print area.
The printed matter according to any one of claims 1 to 7, wherein the maximum dimension of the protrusion in the first printed area in a plan view is larger than the maximum dimension of the protrusion in a plan view in the second printed area. .. 前記突起のアスペクト比は、０．４以上３０以下に設定される、請求項１から８の何れか一項に記載の印刷物。 The printed matter according to any one of claims 1 to 8, wherein the aspect ratio of the protrusion is set to 0.4 or more and 30 or less. 前記突起の平面視における最大寸法は、４０μｍ以上５００μｍ以下に設定される、請求項１から９の何れか一項に記載の印刷物。 The printed matter according to any one of claims 1 to 9, wherein the maximum dimension of the protrusion in a plan view is set to 40 μm or more and 500 μm or less.
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JP2011083991A (en) 2009-10-16 2011-04-28 National Printing Bureau Valuable printed matter with distinguishing mark
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