WO2001080208A1 - Image sheet excellent in visibility and sheet for producing the same - Google Patents

Image sheet excellent in visibility and sheet for producing the same Download PDF

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Publication number
WO2001080208A1
WO2001080208A1 PCT/JP2001/003187 JP0103187W WO0180208A1 WO 2001080208 A1 WO2001080208 A1 WO 2001080208A1 JP 0103187 W JP0103187 W JP 0103187W WO 0180208 A1 WO0180208 A1 WO 0180208A1
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WO
WIPO (PCT)
Prior art keywords
image
sheet
printing
retroreflective
transparent
Prior art date
Application number
PCT/JP2001/003187
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroaki Matsuura
Shunji Sugano
Nobuya Kita
Takeshi Nishida
Original Assignee
Komatsu Process Co., Ltd.
Negami Chemical Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Process Co., Ltd., Negami Chemical Industrial Co., Ltd. filed Critical Komatsu Process Co., Ltd.
Publication of WO2001080208A1 publication Critical patent/WO2001080208A1/en

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/12Reflex reflectors

Definitions

  • the present invention provides an image sheet in which an image represented by a full color image or the like is made excellent in visibility by using a property of reflecting light toward a light source, so-called retroreflectivity, and a personal computer.
  • the present invention relates to an image printing sheet for easily obtaining the image sheet by a simple printing method such as an ink jet printing method used. Background technology
  • the retroreflective pattern has a structure in which the retroreflected light can be viewed as colored light (chromatic light) such as red, yellow, and blue, visibility from far away at night will be even better.
  • colored light chromatic light
  • retroreflective sheets are industrially designed and mass-produced, and most of them are composed of one or two or three colors. A simple method that can be integrated is desired.
  • a retroreflective sheet for example, a desired pattern on a fabric, a scaly My force and a no or aluminum layer, and a dye layer made of a dye or pigment such as red, yellow, blue, etc. thereon, Further, there is a method of forming a glass bead layer thereon. Also, in Japanese Patent Application Laid-Open No. 9-198583, a temporary adhesive layer is provided on a base layer, glass beads are temporarily bonded to the temporary adhesive layer to produce a base sheet, and a glass sheet is formed on the base sheet.
  • a glass bead protective layer that adheres to the beads and the glass bead temporary adhesive layer is provided, and a pattern pattern layer that is temporarily attached to the glass bead protective layer and also adheres to the glass beads protrudes from the glass bead protective layer.
  • a method of providing an adhesive layer made of a tacky adhesive on the entire design pattern layer proposes a method of providing a metallic color ink pattern layer, a non-metallic color ink pattern layer, and a light diffusion transfer layer from the object surface side.
  • a method has been proposed in which an image is output on a transfer paper using a sublimable dye ink, and the image is transferred onto a retroreflective material.
  • the first method and the second method require a commercial printing method such as screen printing for image formation, and furthermore, it is necessary to provide an adhesive layer after image formation, which makes the operation complicated.
  • the third method and the fourth method are not special methods that general users can use to create original works, but are special methods in which a printable printer can use metallic ink or sublimable dye ink. And operation was complicated.
  • the recording quality of an ink-jet printer is greatly affected not only by the performance of the hardware but also by the properties of the recording medium.
  • a variety of recording media having an ink receiving layer on the surface have been developed.
  • the first object of the present invention is to use original OA in such a home or the like to create an original image such as a full-color image created using a printer such as an ink jet printing method or a thermal transfer printing method, or the like.
  • An object of the present invention is to provide a technology capable of easily forming a large full-color image obtained by using a large-sized printing technology into a retroreflective sheet having excellent visibility.
  • a second object of the present invention is to provide an image printing sheet which can easily obtain such an excellently visible image sheet using a personal computer.
  • an image sheet having excellent visibility according to the present invention is obtained by superposing a transparent film on which an image is printed on a retroreflective surface of a substrate having retroreflective properties.
  • the image printing sheet according to the present invention for obtaining the image sheet excellent in visibility according to the present invention is provided on a rear surface of a transparent film having printability by recurring. It is obtained by bonding a retroreflective surface of a reflective substrate.
  • a full-color image or the like that has been conventionally produced industrially by a simple printing method such as a screen printing method, a gravure printing method, an ink jet printing method, and a thermal transfer method.
  • a full-color image or the like obtained by the above method or a full-color original image produced in a home or the like can be a retroreflective image with excellent visibility.
  • FIG. 1 is an exploded perspective view (a) and two partially enlarged sectional views (b) and (c) showing an embodiment of an image sheet according to the present invention.
  • FIG. 2 is a partially enlarged sectional view showing another embodiment of the image sheet according to the present invention.
  • FIG. 3 is a partially enlarged cross-sectional view showing another embodiment of the image sheet according to the present invention.
  • FIG. 1 shows an example of an image sheet having excellent visibility according to the present invention.
  • this superposed state is fixed by bonding through the adhesive layers 3 of the first and second adhesive layers.
  • the adhesive layer 3 used for the above-mentioned bonding is preferably formed in a dot shape and / or a linear shape.
  • the transparent image film 1 and the retroreflective substrate 2 can be fixed without using an adhesive by surrounding the area with a frame. Therefore, the adhesive layer 3 can be omitted.
  • reference numeral 4 denotes an air layer existing between the transparent image film 1 and the substrate 1.
  • the transparent image film 1 having the image layer 11 has a structure in which the image layer 11 is formed only on the surface of one transparent film 10 as shown in FIG.
  • a protective layer may be formed on the image layer 11 formed on the surface of the first transparent film 10 via an adhesive layer 12 if necessary.
  • a transparent film 13 is provided.
  • the S 2 retroreflectivity of the substrate 2 can be provided by various methods. For example, by applying a retroreflective ink composition containing glass beads, aluminum fine particles, and an adhesive resin to the entire surface of the base material 2, it is possible to impart retroreflective properties to the surface. If the removable pressure-sensitive adhesive layer 5 is provided on the back surface of the base material 2, the image sheet according to the present invention can be attached to the adherend only when necessary. When it becomes dirty, it can be removed from the adherend and washed off. However, in the image sheet according to the present invention, the pressure-sensitive adhesive layer 5 can be omitted.
  • the image printing sheet according to the present invention is not shown, in the transparent image sheet 1, the transparent film 10 has no image, the surface has printability, and is printed by a personal computer or the like. However, if an image can be formed on the surface at a later date, the other configuration may be the same as the above-mentioned image sheet.
  • the transparent film used in the present invention is not particularly limited as long as it has transparency, but preferably has a visible light transmittance of 80% or more.
  • plastic films such as polyester, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, polyacryl, and polyurethane, and those obtained by laminating any two or more of these films are used.
  • the image may be only a character or a solid color in addition to the design image.
  • ink jet printing, screen printing, and gravure printing are excellent. It is preferable to use a transparent ink with low opacity as the ink used in the screen printing method and gravure printing method from the viewpoint of sharpening the emission of retroreflective light, but it is preferable to use an opaque ink with high concealment property. Even when used, apply ink on an area of 10% or more and 90% or less, preferably 30% or more and 70% or less of the occupied area of the image to be printed, and do not put it on other areas.
  • Part of the retroreflected light can be colored by reflecting the color of the ink.
  • an opaque ink with high hiding power if the area occupied by the ink with respect to the image is less than 10%, the print itself becomes unclear and the retroreflected image becomes unclear. The reflected light tends to be small and the retroreflected image also tends to be unclear.
  • the output is preferably from a thermal transfer type or an inkjet type printer, but may be handwritten with a magic ink or a marking pen.
  • the image is created by a company, in addition to the individual user's method, letterpress printing, intaglio printing, lithographic printing, stencil printing, electrostatic toner printing, silver halide photography, laser exposure silver halide photography, etc. may be used. Printing can be performed using one of these methods or a combination of two or more methods.
  • a thermal transfer method letterpress printing, intaglio printing, lithographic printing, stencil printing. It is possible to print an image using the film as it is, but when using a silver halide photograph or a laser-exposed silver halide photograph, it is necessary to use a special film containing a photosensitive agent.
  • a printer of the inkjet printing method or when printing using a water-based ink in letterpress printing, intaglio printing, lithographic printing, and stencil printing these materials cannot usually absorb the water-based ink. It cannot be used as it is.
  • the entire film provided with the inkjet ink receiving layer has transparency, and the visible light transmittance of the entire film is preferably 80% or more.
  • the ink jet ink receiving layer having transparency any layer may be used, and various layers have been proposed.
  • a material mainly containing a water-soluble or hydrophilic polymer substance and adding inorganic or organic fine particles to a range not impairing the transparency can be suitably used.
  • a water-soluble or hydrophilic polymer substance has excellent affinity for ink, enables fixing of ink, and fine particles have a function of improving ink absorbability.
  • water-soluble or hydrophilic polymer examples thereof include starch and modified products thereof, polyvinyl alcohol and modified products thereof, SBR latex, NBR latex, carboxymethylcellulose, hydroxymethylcellulose, polyvinylpyrrolidone, and the like, and mixtures of two or more of these.
  • examples of the inorganic or organic fine particles include silica, alumina, calcium carbonate, tanolek, titanium dioxide, barium sulfate, aluminum sulfate, polyacryl cross-linked products, polyurethane cross-linked products, and a mixture of two or more of these.
  • either the surface on which the surface image is printed or the surface on which the surface image is not printed may be used as the surface to be bonded to the base material 2.
  • the printed surface it is preferable to use the printed surface as the adhesive surface with the base material 2 and expose the non-printed surface to the outside. In this case, it is necessary to print the original image with the left and right reversed, but this is easily possible using a computer.
  • the material used for the substrate may be any material as long as it is a sheet, such as paper, paper, cloth, nonwoven fabric, leather, plastic film, plastic plate, metal film, metal plate, and glass plate. No.
  • a three-dimensional object may be used as long as it has a surface to which a transparent film can be attached.
  • a material having flexibility and mechanical strength that can be applied to a printer is selected as a substrate for obtaining an image printing sheet.
  • the method of imparting the retroreflective property of the base layer may be any method.
  • Recursive structures include glass beads embedded in a transparent resin provided on a glossy metal surface, and three reflective planes that are perpendicular to each other are arranged in a concave shape and laid back and over (corner cupe structure). It is reflective and various methods have been proposed for making these structures.
  • transparent resin is coated on a transparent base sheet such as polyester, and glass beads are evenly spread on the surface. Then, half of the glass beads are embedded in the coating resin layer by pressing, and then the surface is coated. Then, a transparent resin is coated to form a protective layer. Then, when a metal thin film is formed on the opposite side of the laminated sheet in which the glass beads are embedded by vacuum evaporation or the like, a retroreflective structure is obtained. You.
  • an embossed plate is manufactured using a corner-cube structure manufactured by injection molding, and in Japanese Patent Application Laid-Open No. 10-199124, a cubic crystal such as sodium chloride is used to produce an embossed plate.
  • a cubic crystal such as sodium chloride is used to produce an embossed plate.
  • a retroreflective ink composition composed of glass beads, aluminum particles and a binder resin to a cloth or the like by a method such as screen printing, large glass beads remain on the surface, and the fluidity is improved. It is also known that the resin and aluminum particles sink under the glass beads to obtain a retroreflective structure.
  • a retroreflective ink composition As one kind of such a retroreflective ink composition, one of the present applicants has previously provided a print sheet with a colorless retroreflective function with good productivity and efficiency, and even from a distance at night.
  • a retroreflective printing ink composition that enhances visibility and contributes to crime prevention or safety, and also enhances the expressiveness of the product by giving it fashionability through colorization.
  • a patent application was filed (Japanese Patent Application No. 11-1-11 395).
  • a pattern (coating film) formed by screen printing or the like is irradiated with visible light (wavelength: 400 to 700 nm)
  • visible light wavelength: 400 to 700 nm
  • the particles serving as the reflecting mirror are of my power
  • the light transmitted through the glass beads A part of the light is immediately reflected by my force, but the wavelength portion of the color of the dye or the base material is also reflected by the dye or base material for light passing through the my force.
  • the particles serving as the reflecting mirror are colored aluminum particles
  • the light transmitted through the glass beads is reflected by the colored aluminum particle particles themselves.
  • the reflected color light enters the observer's eyes as a chromatic retroreflected light in which the color of the dye is combined with the color of the substrate surface and the color of the colored aluminum particles.
  • an adhesive is generally used, and preferred types of the adhesive include an emulsion type, a solution type, and a hot melt type adhesive and an adhesive.
  • an adhesive When using an adhesive, apply it to either the film surface or the substrate retroreflective surface and bond it, or place a hot-melt adhesive sheet between the film surface and the substrate retroreflective surface. Depending on the method of bonding.
  • the hot-melt-type adhesive sheet referred to here refers to a sheet, such as a film, a woven fabric, a knitted fabric, or a nonwoven fabric, made of a polymer material having a hot melt property and having a planar shape.
  • the occupied area of the image printed on the transparent film 10 be less than 90%. In other words, it is preferable that, on the image printed on the transparent film 10, 10% or more of the surface to which no adhesive is attached (non-adhesive surface) remains.
  • any method may be used. For example, there is a method of creating dot-like, parallel-line, or lattice-like patterns by gravure coating.
  • the adhesive will be a continuous line, such as a grid or a turtle, and a closed pattern.
  • the formation of a layer shields the non-adhesive surface from the outside, and is particularly preferred.
  • a preferred embodiment of the present invention is to provide a protective layer made of the transparent film 13 on the image layer 11.
  • Means for forming such a protective layer include, for example, a method of thermocompression bonding a film with a hot melt adhesive and a method of thermocompression bonding with a film for a laminator, but are not limited thereto. Les ,.
  • the re-peelable layer 5 may be formed on the back surface of the base material 2 by using an adhesive, a hot melt adhesive, or the like, as described above.
  • the obtained retroreflective sheet can be easily attached to a desired place as a seal, an emblem, a sticker, or the like.
  • re-peelable adhesive processing it can be repeatedly attached and removed repeatedly.
  • Removable adhesive processing methods include those with low adhesive strength of the adhesive itself, those with a plasticizer added to the adhesive, and those with irregularities on the surface of the adhesive layer.
  • Etc. and any method may be used.
  • the image sheet with excellent visibility according to the present invention can be used for conventional applications such as road signs, information signs, construction signs, and other safety signs, and clothes, shoes, shoes, safety equipment, and other safety signs. , Which greatly expands the range of expression, and also enables applications that were previously impossible, such as advertisements such as large billboards and posters, and original hobby applications such as personal seals and original stickers. is there.
  • the image printing sheet according to the present invention facilitates obtaining such an image sheet excellent in visibility according to the present invention.
  • the accelerated weathering test conducted in some of the following examples was carried out according to JISZ9117 7.5 (1) using a ducycle type sunshine carbon accelerated weathering tester manufactured by Suga Test Instruments Co., Ltd. Exposure was performed according to the method shown, and the state of appearance after 80 hours was observed.
  • the entire surface of the synthetic woven fabric (polyester bondee) is screen-printed with retroreflective ink (Art Bright Co., Ltd. made by Komatsu Process Co., Ltd.) using an 80-mesh screen gauze, and then dried using a dryer. Heat treatment was performed at 1 75 ° C for 3 minutes to obtain a retroreflective cloth (base material) 2.
  • a full-color image is printed on the ink-receiving layer of an ink-jet OHP sheet (manufactured by Seiko Epson Corporation) using an inkjet printer (manufactured by Seiko Epson Corporation PM-770C).
  • the transparent image film 1 is placed on the retroreflective surface of the retroreflective cloth 2, the glass plate 6 is further placed thereon, and the periphery is fixed with a frame, thereby providing a full color image.
  • 10 is a transparent film
  • 11 is an image layer
  • 4 is an air layer.
  • Example 2 In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained.
  • a removable acrylic resin adhesive solution manufactured by Negami Kogyo Co., Ltd., trade name: Paracron ME—200, solid content: 20% by weight
  • release paper was dried on release paper to a dry thickness of 10 ⁇ . Coating and drying so that the retroreflective cloth is adhered thereon so that the retroreflective surface is exposed, to thereby obtain a retroreflective cloth which has been subjected to a removable adhesive processing. .
  • an acrylic resin pressure-sensitive adhesive solution (Paraklon AS-30000 mm, solid content: 30%) manufactured by Negami Co., Ltd., having a line width of 0.1 cm and a space of 0.1 cm was applied to the non-printing surface of the transparent image film. It was applied in a grid pattern of lcni and dried to obtain a transparent image film with an adhesive.
  • the adhesive surface of the transparent image film with an adhesive was adhered to the retroreflective surface of the retroreflective cloth to obtain a full-color retroreflective image sheet.
  • this retroreflective image sheet When this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. Also, from a distance of 100 m in the dark, when illuminated with a car headlight, the presence was easily recognized. In addition, when the release paper on the back surface of this retroreflective image sheet is peeled off, a re-peelable adhesive-treated surface appears, so it can be attached to a desired location and then removed. .
  • Example 2 In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained.
  • a hot-melt adhesive (Daicel Huls) is applied to the retroreflective surface of the retroreflective cloth. Co., Ltd., XI 316, solid content 30%) is applied in a grid pattern with a line width of 0.1 cm and an interval of 1 cm, and the non-printing surface of the transparent image film is bonded by thermocompression. Together, a full-color retroreflective sheet was obtained.
  • this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. In addition, when it was illuminated by a car headlight from a distance of 10 Om at ⁇ ⁇ , its presence could be easily recognized.
  • a retroreflective cloth 2 and a transparent image film 1 were obtained.
  • the image was turned left and right by computer processing.
  • a hot-melt adhesive was applied to the printing surface of the transparent image film 1 in a grid pattern having a line width of 0.1 cm and an interval of 1 cm, and the retroreflective surface of the retroreflective cloth 2 was applied.
  • 10 is a transparent film
  • 11 is an image layer
  • 3 is an adhesive layer
  • 4 is an air layer.
  • Example 2 In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained. However, in this case, the image was turned left and right by computer processing.
  • a hot-melt adhesive is applied to the retroreflective surface of the retroreflective fabric in a grid pattern with a line width of 0.1 cm and an interval of 1 cra, and the printed surface of the transparent image film is firmly pressed and bonded.
  • a full-color retroreflective sheet was obtained.
  • Example 2 In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained.
  • thermoplastic polyurethane A woven fabric was placed, a transparent image film was overlaid so that the non-printing surface was in contact with the nonwoven fabric, and bonded by thermocompression bonding from above to obtain a full-color S-reflective sheet.
  • a polyurethane resin solution is applied on release paper so as to have a dry thickness of 100 / zm, dried, and the above-mentioned inkjet ink receiving agent is gravure-printed thereon, and one point has a diameter of ⁇ ⁇ ,
  • the film was applied in the form of discontinuous dots having a distance between dots of 12 m and dried to obtain a flexible film having an ink jet receiving layer on the release paper. Since polyvinylpyrrolidone itself is a hard resin, continuous coating does not result in a flexible film. Therefore, the inkjet ink receiving layer was formed by discontinuous gravure printing as described above so as not to impair the flexibility of the polyurethane resin film.
  • Example 2 In the same manner as in Example 2, a hot-melt adhesive was applied in a grid pattern on the retroreflective surface of the retroreflective fabric, and the same hot-melt adhesive was applied on the entire opposite surface, and the hot-melt adhesive was applied to both surfaces. A coated retroreflective fabric was obtained.
  • the retroreflective cloth and the soft transparent image film are placed on the T-shirt, the non-retroreflective surfaces of the T-shirt and the retroreflective cloth face each other, and the retroreflective face of the retroreflective cloth and the soft transparent image film are printed.
  • the release paper is peeled off from the soft transparent image film, it is Ding shirts printed with Zinal's retroreflective images are now available.
  • a full-color image sheet was obtained in the same manner as in Example 1 except that the synthetic woven fabric was used as it was without performing retroreflection.
  • This full color image sheet could not be recognized even when it was illuminated with a flashlight from a distance of 1 Om in the cabinet. Also, when it was illuminated by a car headlight from a distance of 10 Om from ⁇ ⁇ , its presence could not be recognized.
  • a full-color image sheet was obtained in the same manner as in Example 1, except that the acryl resin adhesive solution was applied to the entire non-printing surface of the transparent image film.
  • a full-color retroreflective image sheet was prepared in the same manner as in Example 1 except that a full-color transparent image film was obtained using Fujicolor G poster provided by Fujicolor Service Co., Ltd. Obtained.
  • this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. Also, from a distance of 100 m in the dark, when illuminated with a car headlight, the presence was easily recognized.
  • Table 1 shows the results of accelerated weathering test of this retroreflective image sheet.
  • Example 1 The entire surface of the transparent image film obtained in the same manner as in Example 1 was laminated using a hot melt laminator (MSPOUCHH-320-Z, manufactured by Meiko Shokai Co., Ltd.). Other than using this laminated processed transparent image film, In the same manner as in Example 1, a full-color retroreflective image sheet was obtained. When this retroreflective sheet was illuminated with a flashlight from a distance of 1 Om from ⁇ ⁇ , the image was clearly recognizable. Also, from a distance of 100 m in the dark, when illuminated with the headlights of a car, the presence was easily recognized. Table 1 shows the results of accelerated weather resistance testing of this retroreflective image sheet. It can be seen that the retroreflective image sheet of Example 10 subjected to the laminating process has much better weather resistance than the retroreflective image sheet of Example 1.
  • Example 9 The entire surface of the transparent image film obtained in the same manner as in Example 9 was laminated with a hot menoret laminator (MSPOUCHH-320-Z manufactured by Meiko Shokai Co., Ltd.). A full-color retroreflective image sheet was obtained in the same manner as in Example 1 except for using this laminated transparent image film.
  • MSPOUCHH-320-Z manufactured by Meiko Shokai Co., Ltd.

Abstract

A technique for producing a retroreflective sheet excellent in visibility on which a full-color image is provide by using, e.g., a personal computer. An image sheet produced by overlaying a transparent film on which an image is printed over a retroreflecting surface of a base having a retroreflectivity and an image-printing sheet used for producing such an image sheet are disclosed. The image printing sheet is produced by joining the back of the transparent film having a printability to the retroreflective surface of the base.

Description

明 細 書 視認性に優れた画像シートおよびこれを得るためのシ一ト 技 術 分 野  Description Image sheet with excellent visibility and sheet technology for obtaining it
本発明は、 光を光源方向に向けて反射させる性質、 いわゆる再帰反射性を利用 して、 フルカラ一等で表現された画像を視認性に優れたものとした画像シ一ト、 および、 パソコンを使用したインクジエツト印刷方式等の簡便な印刷方法により 上記画像シ一トを容易に得させる画像印刷用シートに関するものである。 背 景 技 術  The present invention provides an image sheet in which an image represented by a full color image or the like is made excellent in visibility by using a property of reflecting light toward a light source, so-called retroreflectivity, and a personal computer. The present invention relates to an image printing sheet for easily obtaining the image sheet by a simple printing method such as an ink jet printing method used. Background technology
従来、 光を光源方向へ向けて反射させる性質、 いわゆる再帰反射性に基づく優 れた視認性を利用して、 様々なシ一ト状商品が広い分野において使用されている。 例えば、 道路標識 ·案内標識 ·工事標識などの標識類、 自動車 ·オートバイなど の車輛のステッカーやプレート類、 衣服 .靴 .鞫 ·救命用具などへの安全標示類、 看板 ·宣伝旗 ·幟などの宣伝標示類などがその使用例である。 これらの再帰反射 商品は、 夜間のみならず、 昼間における視認性にも優れている。  Conventionally, various sheet-like products have been used in a wide range of fields by utilizing the property of reflecting light toward a light source, that is, excellent visibility based on so-called retroreflectivity. For example, road signs, information signs, construction signs, etc., signs and plates for vehicles such as cars and motorcycles, clothes, shoes, safety signs, safety signs on life-saving equipment, signs, advertising flags, banners, etc. Advertising signs are examples of its use. These retroreflective products have excellent visibility not only during the night but also during the day.
再帰反射性の図柄は、 その再帰反射光が赤、 黄、 青のように色光 (有彩色の 光) として見えるような構造を備えていれば、 夜間遠方からの視認性がより一層 * θ。  If the retroreflective pattern has a structure in which the retroreflected light can be viewed as colored light (chromatic light) such as red, yellow, and blue, visibility from far away at night will be even better.
広く一般に使用されている再帰反射シートは、 工業的にデザインされて大量生 産されており、 しかも、 そのほとんどが単色ないしは 2〜 3色で構成されていて、 フルカラーのオリジナル面像を再帰反射シ一トとすることができる簡便な方法が 望まれている。  Widely used retroreflective sheets are industrially designed and mass-produced, and most of them are composed of one or two or three colors. A simple method that can be integrated is desired.
このような再帰反射シートを得る方法として、 例えば、 布帛上に所望の図柄で、 鱗片状マイ力およびノまたはアルミニウム層、 その上に赤、 黄、 青などの染料や 顔料などからなる色素層、 さらにその上にガラスビーズ層を形成する方法が挙げ られる。 また、 特開平 9一 1 0 5 0 8 3号公報では、 基層上に仮接着層を設け、 これにガラスビーズを仮接着して基体シ一トを作製し、 この基体シ一ト上にガラ スビーズとガラスビーズ仮接着層に接着するガラスビーズ保護層を設け、 その上 に、 上記ガラスビーズ保護層に仮着するとともにガラスビーズにも接着する図柄 模様層をガラスビ一ズ保護層よりもはみ出して設け、 かつ図柄模様層全面に粘着 性接着剤よりなる接着層を設ける方法が提案されている。 さらに、 特開平 1 1一 4 8 6 9 3号公報では、 物体表面側からメタリックカラーインクパターン層、 非 メタリックカラ一インクパターン層、 光拡散性転写層を設ける方法が提案されて いる。 そのほか、 転写紙上に昇華性染料インクを用いて画像を出力し、 これを再 帰反射素材上に転写する方法も提案されている。 As a method for obtaining such a retroreflective sheet, for example, a desired pattern on a fabric, a scaly My force and a no or aluminum layer, and a dye layer made of a dye or pigment such as red, yellow, blue, etc. thereon, Further, there is a method of forming a glass bead layer thereon. Also, in Japanese Patent Application Laid-Open No. 9-198583, a temporary adhesive layer is provided on a base layer, glass beads are temporarily bonded to the temporary adhesive layer to produce a base sheet, and a glass sheet is formed on the base sheet. A glass bead protective layer that adheres to the beads and the glass bead temporary adhesive layer is provided, and a pattern pattern layer that is temporarily attached to the glass bead protective layer and also adheres to the glass beads protrudes from the glass bead protective layer. There has been proposed a method of providing an adhesive layer made of a tacky adhesive on the entire design pattern layer. Further, Japanese Patent Application Laid-Open No. 11-46893 proposes a method of providing a metallic color ink pattern layer, a non-metallic color ink pattern layer, and a light diffusion transfer layer from the object surface side. In addition, a method has been proposed in which an image is output on a transfer paper using a sublimable dye ink, and the image is transferred onto a retroreflective material.
しかしながら、 上記諸方法のうち、 第 1の方法と第 2の方法は、 画像形成にス クリーン印刷など業務用印刷方式を必要とし、 しかも画像形成後に接着層を設け る必要があり、 操作が複雑である上に、 一般ユーザ一がオリジナル作品作りに使 用できる方法ではなく、 第 3の方法と第 4の方法は、 印刷できるプリンタ一がメ タリックインクや昇華性染料ィンクを使用できる特殊なものに限定される上に、 操作が複雑であった。  However, of the above methods, the first method and the second method require a commercial printing method such as screen printing for image formation, and furthermore, it is necessary to provide an adhesive layer after image formation, which makes the operation complicated. In addition, the third method and the fourth method are not special methods that general users can use to create original works, but are special methods in which a printable printer can use metallic ink or sublimable dye ink. And operation was complicated.
ところで、 近年、 コンピュータ一とインクジェット印刷方式、 熱転写印刷方式 等によるカラ一プリンターが、 オフィス、 家庭に急速に普及してきた。 そして、 自分で撮影した写真や、 電子媒体で供給される画像をコンピュータ一で加工した オリジナル画像を、 カラープリンターでプリントアウトすることで、 ポスタ一や カレンダ一などのオリジナル作品を容易に作れるようになつている。 更に、 イン クジェット記録方式は、 大型化の容易さから、 大型看板、 ポスタ一、 電飾等の産 業分野へも応用されている。  By the way, in recent years, color printers using a computer and an ink jet printing method or a thermal transfer printing method have rapidly spread to offices and homes. Then, by printing out a photograph taken by yourself or an original image obtained by processing an image supplied on an electronic medium with a computer using a color printer, original works such as posters and calendars can be easily created. I'm sorry. Furthermore, the ink jet recording method has been applied to industrial fields such as large signboards, posters, and illuminations due to the ease of upsizing.
インクジェットプリ ンターの記録画質は、 ハードの性能のみならず、 記録媒体 の性質により大きく左右されるが、 表面にインク受理層を設けた多種多様の記録 媒体が開発されている。  The recording quality of an ink-jet printer is greatly affected not only by the performance of the hardware but also by the properties of the recording medium. A variety of recording media having an ink receiving layer on the surface have been developed.
さらに、 近年、 大型印刷の技術が進歩し、 インクジェッ ト印刷方式に限らず、 透明フィルムにフルカラ一の画像を印刷することが可能になってきた。 このよう な印刷方式として、 例えば、 銀塩写真ゃ静電トナー方式が挙げられる。 発 明 の 開 示 発明の目的 Furthermore, in recent years, the technology of large-scale printing has been advanced, and it has become possible to print a full-color image on a transparent film in addition to the inkjet printing method. As such a printing method, for example, a silver halide photography / electrostatic toner method is used. Disclosure of the invention Purpose of the invention
そこで、 本発明の第 1の課題は、 このような家庭内 O A化を利用する等して、 インクジエツ ト印刷方式、 熱転写印刷方式等のプリンタ一を用いて作られるフル カラー等のオリジナル画像や、 大型印刷技術を利用して得られた大型のフルカラ 一画像を容易に、 視認性に優れた再帰反射シートとすることができる技術を提供 することである。  Therefore, the first object of the present invention is to use original OA in such a home or the like to create an original image such as a full-color image created using a printer such as an ink jet printing method or a thermal transfer printing method, or the like. An object of the present invention is to provide a technology capable of easily forming a large full-color image obtained by using a large-sized printing technology into a retroreflective sheet having excellent visibility.
本発明の第 2の課題は、 このような視認性に優れた画像シートをパソコンを利 用して容易に得させる画像印刷用シートを提供することである。 発明の概要  A second object of the present invention is to provide an image printing sheet which can easily obtain such an excellently visible image sheet using a personal computer. Summary of the Invention
上記第 1 の課題を解決するため、 本発明にかかる、 視認性に優れた画像シート は、 画像の印刷された透明フィルムを再帰反射性を有する基材の再帰反射面に重 ね合わせてなる。  In order to solve the first problem, an image sheet having excellent visibility according to the present invention is obtained by superposing a transparent film on which an image is printed on a retroreflective surface of a substrate having retroreflective properties.
上記第 2の課題を解決するため、 上記本発明にかかる視認性に優れた画像シー トを得るための、 本発明にかかる画像印刷用シートは、 印刷適性を有する透明フ イルムの裏面に、 再帰反射性を有する基材の再帰反射面を貼り合わせてなる。 発明の効果  In order to solve the second problem, the image printing sheet according to the present invention for obtaining the image sheet excellent in visibility according to the present invention is provided on a rear surface of a transparent film having printability by recurring. It is obtained by bonding a retroreflective surface of a reflective substrate. The invention's effect
本発明によれば、 従来は工業的に作られているフルカラー画像等をスクリーン 印刷方式、 グラビア印刷方式、 インクジェッ ト印刷方式、 熱転写方式等の簡便な 印刷方式で得ることができ、 しかも、 このようにして得られるフルカラー画像等 や家庭内等で制作されるフルカラーォリジナル画像を視認性に優れた再帰反射画 像とすることができる。  According to the present invention, it is possible to obtain a full-color image or the like that has been conventionally produced industrially by a simple printing method such as a screen printing method, a gravure printing method, an ink jet printing method, and a thermal transfer method. A full-color image or the like obtained by the above method or a full-color original image produced in a home or the like can be a retroreflective image with excellent visibility.
図面の簡単な説明 BRIEF DESCRIPTION OF THE FIGURES
図 1は、 本発明にかかる画像シートの一実施例を表す分解斜視図 (a ) と部分 拡大断面図 2つ (b )、 ( c ) である。  FIG. 1 is an exploded perspective view (a) and two partially enlarged sectional views (b) and (c) showing an embodiment of an image sheet according to the present invention.
図 2は、 本発明にかかる画像シー トの別の実施例を表す部分拡大断面図である。 図 3は、 本発明にかかる画像シー卜のざらに別の実施例を表す部分拡大断面図 である。 FIG. 2 is a partially enlarged sectional view showing another embodiment of the image sheet according to the present invention. FIG. 3 is a partially enlarged cross-sectional view showing another embodiment of the image sheet according to the present invention.
符合の説明 Explanation of sign
1 透明画像フィルム  1 Transparent image film
1 0 透明フィルム  1 0 Transparent film
1 1 画像層  1 1 Image layer
1 2 接着剤層  1 2 Adhesive layer
1 3 透明フィルム  1 3 Transparent film
2 再帰反射性を有する基材 (布帛)  2 Retroreflective substrate (fabric)
3 接着剤層  3 Adhesive layer
5 粘着剤層 (再剥離層)  5 Adhesive layer (removable layer)
6 ガラス板 発明を実施するための最良の形態  6 Glass plate Best mode for carrying out the invention
図 1は、 本発明にかかる、 視認性に優れた画像シートの 1例を示す。 「 → 一方通行 T H I S WA Y」 等の、 印刷による画像層 1 1を有する透明画像フ イルム 1が再帰反射性を有する基材 2の表面 (再帰反射面) に重ね合わされてい る。 図 1の実施例では、 この重ね合わせ状態が両者 1, 2の接着剤層 3を介する 貼り合わせにより固定されている。 基材 2の再帰反射性をできるだけ損なわない ようにするためには、 上記貼り合わせに用いる接着剤層 3は点状および/または 線状に形成されていることが好ましいが、 透明性に優れる接着剤であれば全面塗 布してもよく、 また、 周囲を枠で囲うなどすれば、 接着剤を用いることなく、 透 明画像フィルム 1 と再帰反射性基材 2の重ね合わせ状態を固定することが出来る ので、 接着剤層 3を省略することも出来る。 図 1の (b )、 (c ) 中、 4は透明画 像フィルム 1と基材 1の間に存在する空気層である。  FIG. 1 shows an example of an image sheet having excellent visibility according to the present invention. A transparent image film 1 having an image layer 11 by printing, such as “→ one-way THIS WAY”, is superimposed on the surface (retroreflective surface) of a substrate 2 having retroreflective properties. In the embodiment shown in FIG. 1, this superposed state is fixed by bonding through the adhesive layers 3 of the first and second adhesive layers. In order to minimize the retroreflectivity of the base material 2, the adhesive layer 3 used for the above-mentioned bonding is preferably formed in a dot shape and / or a linear shape. The transparent image film 1 and the retroreflective substrate 2 can be fixed without using an adhesive by surrounding the area with a frame. Therefore, the adhesive layer 3 can be omitted. In FIGS. 1 (b) and (c), reference numeral 4 denotes an air layer existing between the transparent image film 1 and the substrate 1.
本発明において、 画像層 1 1を有する透明画像フィルム 1は、 図 1の (b ) の ように、 1枚の透明フィルム 1 0の表面に画像層 1 1が形成されただけの構成で あっても良いが、 図 1の (c ) のように、 第 1の透明フィルム 1 0の表面に形成 された画像層 1 1の上に、 必要に応じ接着層 1 2を介して、 保護層としての第 2 の透明フィルム 1 3を設けておくのが好ましい。 このような保護層を設けておく ことにより、 画像を成形している色材が空気や水と直接接触しない構造となり、 画像の耐久性、 耐候性が向上する。 In the present invention, the transparent image film 1 having the image layer 11 has a structure in which the image layer 11 is formed only on the surface of one transparent film 10 as shown in FIG. However, as shown in FIG. 1 (c), a protective layer may be formed on the image layer 11 formed on the surface of the first transparent film 10 via an adhesive layer 12 if necessary. No. 2 Preferably, a transparent film 13 is provided. By providing such a protective layer, the color material forming the image has a structure that does not directly come into contact with air or water, and the durability and weather resistance of the image are improved.
基材 2の S帰反射性は様々な方法で付与することが出来る。 例えば、 ガラスビ ーズ、 アルミニウム微粒子および接着用樹脂を含む再帰反射性インク組成物を基 材 2の全面に塗工することにより、 表面に再帰反射性を付与することが出来る。 基材 2の裏面に再剥離可能な粘着剤層 5を設けておく と、 本発明にかかる画像 シートは、 必要時のみ、 被着体に貼り付けておくことができる。 また、 汚れたと きには被着体から外して汚れを洗い落とすことも出来る。 もっとも、 本発明にか 力 る画像シートにおいては、 この粘着剤層 5は省略することもできる。  The S 2 retroreflectivity of the substrate 2 can be provided by various methods. For example, by applying a retroreflective ink composition containing glass beads, aluminum fine particles, and an adhesive resin to the entire surface of the base material 2, it is possible to impart retroreflective properties to the surface. If the removable pressure-sensitive adhesive layer 5 is provided on the back surface of the base material 2, the image sheet according to the present invention can be attached to the adherend only when necessary. When it becomes dirty, it can be removed from the adherend and washed off. However, in the image sheet according to the present invention, the pressure-sensitive adhesive layer 5 can be omitted.
本発明にかかる、 画像印刷用シートは、 図示はしないが、 上記透明画像シート 1において、 透明フィルム 1 0は、 画像を有せず、 その表面が印刷適性を有して いて、 パソコン印刷等により、 後日その表面に画像を形成できるようになつてお れば、 それ以外の構成は上記画像シー卜と同一であって良い。  Although the image printing sheet according to the present invention is not shown, in the transparent image sheet 1, the transparent film 10 has no image, the surface has printability, and is printed by a personal computer or the like. However, if an image can be formed on the surface at a later date, the other configuration may be the same as the above-mentioned image sheet.
以下、 本発明について、 さらに詳しく説明する。  Hereinafter, the present invention will be described in more detail.
本発明で用いられる透明フィルムとしては、 透明性を有するものであれば特に 限定されるものではないが、 好ましくは可視光透過率 8 0 %以上のものがよい。 例えば、 ポリエステル、 ポリエチレン、 ポリプロピレン、 ポリスチレン、 ポリ塩 化ビニル、 ポリカーボネート、 ポリアクリル、 ポリウレタンなどのプラスチック フィルム、 およびこれらの任意の 2種類以上のものを貼り合わせたものが挙げら れる。  The transparent film used in the present invention is not particularly limited as long as it has transparency, but preferably has a visible light transmittance of 80% or more. For example, plastic films such as polyester, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, polyacryl, and polyurethane, and those obtained by laminating any two or more of these films are used.
本発明において、 画像とは、 デザイン画の他に、 文字や単色ベタのみのもので もよい。 それを得る手段としては、 工業的には、 インクジェット印刷方式、 スク リーン印刷方式、 グラビア印刷方式が優れている。 スク リーン印刷方式ゃグラビ ァ印刷方式で用いられるインクは、 隠蔽性の低い透明インクを用いることが、 再 帰反射光の発光を鮮明にすると言う観点から好ましいが、 隠蔽性の高い不透明ィ ンクを用いる場合でも、 印刷される画像の占有面積の 1 0 %以上 9 0 %以下、 好 ましくは 3 0 %以上 7 0 %以下の面積にインクを載せ、 それ以外の面積には載せ ないように調節して印刷することにより、 ィンクの載っていない部分を透過した 再帰反射光の一部がィンクの色を反映して発色できるようになる。 隠蔽性の高い 不透明インクを用いる場合において、 画像に対するインクの占有面積が 1 0 %未 満では印刷自体が不鮮明となって再帰反射した画像が不鮮明となり、 他方、 9 0 %を超えると透過する再帰反射光がわずかとなって、 やはり再帰反射した画像 が不鮮明となる傾向がある。 In the present invention, the image may be only a character or a solid color in addition to the design image. As means for obtaining this, industrially, ink jet printing, screen printing, and gravure printing are excellent. It is preferable to use a transparent ink with low opacity as the ink used in the screen printing method and gravure printing method from the viewpoint of sharpening the emission of retroreflective light, but it is preferable to use an opaque ink with high concealment property. Even when used, apply ink on an area of 10% or more and 90% or less, preferably 30% or more and 70% or less of the occupied area of the image to be printed, and do not put it on other areas. By adjusting and printing, the part without the ink was transmitted through Part of the retroreflected light can be colored by reflecting the color of the ink. When using an opaque ink with high hiding power, if the area occupied by the ink with respect to the image is less than 10%, the print itself becomes unclear and the retroreflected image becomes unclear. The reflected light tends to be small and the retroreflected image also tends to be unclear.
画像作成を個人ユーザ一が行う場合には、 熱転写方式かインクジエツト方式の プリンタ一での出力がよいが、 マジックインクやマ一キングペンなどによる手書 きのものであってもよい。 画像作成を業者が行う場合には、 上記個人ユーザーの 方式以外にも凸版印刷、 凹版印刷、 平版印刷、 孔版印刷、 静電トナー印刷、 銀塩 写真、 レーザー露光銀塩写真などによれば良く、 これらの中のいずれか 1つの方 式で、 または 2種類以上の方式を組み合わせて、 印刷作成することができる。  When an individual user creates an image, the output is preferably from a thermal transfer type or an inkjet type printer, but may be handwritten with a magic ink or a marking pen. When the image is created by a company, in addition to the individual user's method, letterpress printing, intaglio printing, lithographic printing, stencil printing, electrostatic toner printing, silver halide photography, laser exposure silver halide photography, etc. may be used. Printing can be performed using one of these methods or a combination of two or more methods.
本発明において、 透明フィルム 1 0上に画像を得る手段として、 熱転写方式、 凸版印刷、 凹版印刷、 平版印刷、 孔版印刷ゃ静電トナー印刷で油性インクを用い て印刷する場合には、 一般の透明フィルムをそのまま用いて画像を印刷すること は可能であるが、 銀塩写真やレーザ一露光銀塩写真を用いる場合には、 感光剤を 含有する特殊なフィルムを用いる必要がある。 また、 インクジェット印刷方式の プリ ンタ一を使用する場合や凸版印刷、 凹版印刷、 平版印刷、 孔版印刷で水性ィ ンクを用いて印刷する場合には、 これらの素材は通常水性ィンクを吸収できない ため、 そのままでは使用することができない。  In the present invention, as a means for obtaining an image on the transparent film 10, a thermal transfer method, letterpress printing, intaglio printing, lithographic printing, stencil printing. It is possible to print an image using the film as it is, but when using a silver halide photograph or a laser-exposed silver halide photograph, it is necessary to use a special film containing a photosensitive agent. In addition, when using a printer of the inkjet printing method or when printing using a water-based ink in letterpress printing, intaglio printing, lithographic printing, and stencil printing, these materials cannot usually absorb the water-based ink. It cannot be used as it is.
そこで、 インクジェット印刷方式のプリンターを使用する場合には、 これらの 透明フィルムの片面、 あるいは両面に、 インクジェットインク受理層を設ける必 要がある。 ただし、 この場合もインクジェットインク受理層を設けたフィルム全 体で透明性を有していることが必要であり、 フィルム全体として、 可視光透過率 は 8 0 %以上が好ましい。 透明性を有するインクジエツ トインク受理層としては、 いかなるものを用いてもよく、 様々なものが提案されている。 例えば、 水溶性あ るいは親水性の高分子物質を主として、 これに透明性を損なわない範囲で無機あ るいは有機の微粒子を添加したものが好適に使用できる。 水溶性あるいは親水性 の高分子物質は、 インク との親和性に優れ、 インクの定着を可能とし、 微粒子は インクの吸収性を改善する働きを有する。 水溶性あるいは親水性の高分子物質と しては、 例えば、 デンプンやその変性物、 ポリビニルアルコールやその変性物、 S B Rラテックス、 N B Rラテックス、 カルボキシメチルセルロース、 ヒ ドロキ シメチルセルロース、 ポリビニルピロリ ドンなど、 およびこれらの 2種類以上の 混合物が挙げられる。 また、 無機あるいは有機の微粒子としては、 シリカ、 アル ミナ、 炭酸カルシウム、 タノレク、 二酸化チタン、 硫酸バリウム、 硫酸アルミニゥ ム、 ポリアク リル架橋体、 ポリウレタン架橋体など、 およびこれらの 2種類以上 の混合物が挙げられる。 Therefore, when using an inkjet printing type printer, it is necessary to provide an inkjet ink receiving layer on one side or both sides of these transparent films. However, in this case as well, it is necessary that the entire film provided with the inkjet ink receiving layer has transparency, and the visible light transmittance of the entire film is preferably 80% or more. As the ink jet ink receiving layer having transparency, any layer may be used, and various layers have been proposed. For example, a material mainly containing a water-soluble or hydrophilic polymer substance and adding inorganic or organic fine particles to a range not impairing the transparency can be suitably used. A water-soluble or hydrophilic polymer substance has excellent affinity for ink, enables fixing of ink, and fine particles have a function of improving ink absorbability. With water-soluble or hydrophilic polymer Examples thereof include starch and modified products thereof, polyvinyl alcohol and modified products thereof, SBR latex, NBR latex, carboxymethylcellulose, hydroxymethylcellulose, polyvinylpyrrolidone, and the like, and mixtures of two or more of these. Examples of the inorganic or organic fine particles include silica, alumina, calcium carbonate, tanolek, titanium dioxide, barium sulfate, aluminum sulfate, polyacryl cross-linked products, polyurethane cross-linked products, and a mixture of two or more of these. Can be
なお、 透明画像フィルム 1において、 面像を印刷した面と印刷していない面と は、 どちらを基材 2との接着面としても構わない。 ただし、 印刷面を保護すると レ、う観点から考えると、 印刷した方の面を基材 2との接着面とし、 外部には印刷 されていない面を出す方が好ましい。 この場合はオリジナル画像を左右反転させ た状態で印刷することが必要となるが、 コンピュータ一を用いれば容易に可能な ことである。  In the transparent image film 1, either the surface on which the surface image is printed or the surface on which the surface image is not printed may be used as the surface to be bonded to the base material 2. However, from the viewpoint of protecting the printed surface, it is preferable to use the printed surface as the adhesive surface with the base material 2 and expose the non-printed surface to the outside. In this case, it is necessary to print the original image with the left and right reversed, but this is easily possible using a computer.
本発明において、 基材に用いられる素材としては、 シート状のものであれば何 でもよく、 紙、 紙、 布、 不織布、 皮革、 プラスチックフィルム、 プラスチック板、 金属フィルム、 金属板、 ガラス板などが挙げられる。 また、 透明フィルムを貼る ことができる面を有していれば、 立体物であってもよい。 しかし、 画像印刷用シ —トを得る場合の基材はプリンタ一に掛けることができる柔軟性と機械的強度を 有する材料が選ばれる。  In the present invention, the material used for the substrate may be any material as long as it is a sheet, such as paper, paper, cloth, nonwoven fabric, leather, plastic film, plastic plate, metal film, metal plate, and glass plate. No. In addition, a three-dimensional object may be used as long as it has a surface to which a transparent film can be attached. However, as a substrate for obtaining an image printing sheet, a material having flexibility and mechanical strength that can be applied to a printer is selected.
基層が有する再帰反射性の付与方法については、 いかなる方法で付与されてい てもよい。 金属光沢面の上に設けられた透明樹脂中にガラスビーズを埋設した構 造や、 互いに直行する三つの反射性平面を凹状に並べて、 線り返し敷き詰めた構 造 (コーナーキュープ構造) などが再帰反射性を有しており、 これらの構造を作 るための様々な方法が提案されている。  The method of imparting the retroreflective property of the base layer may be any method. Recursive structures include glass beads embedded in a transparent resin provided on a glossy metal surface, and three reflective planes that are perpendicular to each other are arranged in a concave shape and laid back and over (corner cupe structure). It is reflective and various methods have been proposed for making these structures.
例えば、 まずポリエステルなどの透明な基材シートに透明な樹脂をコーティン グし、 その表面にガラスビーズを均一に散布し、 その後プレス加工によりガラス ビーズの半分をコ一ティング樹脂層に埋め込み、 その表面には透明な樹脂をコー ティングして保護層を形成する。 そして、 上記ガラスビーズを埋め込んだ積層シ ートの反対側に、 真空蒸着などにより金属薄膜を形成すると、 再帰反射構造とな る。 For example, first, transparent resin is coated on a transparent base sheet such as polyester, and glass beads are evenly spread on the surface. Then, half of the glass beads are embedded in the coating resin layer by pressing, and then the surface is coated. Then, a transparent resin is coated to form a protective layer. Then, when a metal thin film is formed on the opposite side of the laminated sheet in which the glass beads are embedded by vacuum evaporation or the like, a retroreflective structure is obtained. You.
一般には射出成型により製造するコーナ一キューブ構造を、 また、 特開平 1 0 - 3 9 1 2 4号公報では、 塩化ナトリゥムなどの立方体の結晶を用いてエンボス 版を作製し、 そのエンボス版の微細構造を基材シートの上に設けた樹脂に賦型す ることにより、 樹脂表面に微細なコーナ一キューブ構造を形成し、 その凹凸面に 真空蒸着などにより金属薄膜を形成して、 再帰反射構造を作る方法を提案してい る。  In general, an embossed plate is manufactured using a corner-cube structure manufactured by injection molding, and in Japanese Patent Application Laid-Open No. 10-199124, a cubic crystal such as sodium chloride is used to produce an embossed plate. By shaping the structure on the resin provided on the base sheet, a fine corner-cube structure is formed on the resin surface, and a metal thin film is formed on the uneven surface by vacuum evaporation, etc. It proposes a method for making
さらに、 ガラスビーズとアルミニウム粒子およびバインダ一樹脂からなる再帰 反射性ィンク組成物を、 スク リ一ン印刷などの方法で布帛などに塗布することに より、 表面には大きなガラスビーズが残り、 流動性を帯びて樹脂およびアルミ二 ゥム粒子はガラスビーズの下に沈みこんで、 再帰反射構造が得られるという方法 も知られている。  Furthermore, by applying a retroreflective ink composition composed of glass beads, aluminum particles and a binder resin to a cloth or the like by a method such as screen printing, large glass beads remain on the surface, and the fluidity is improved. It is also known that the resin and aluminum particles sink under the glass beads to obtain a retroreflective structure.
このような再帰反射性インク組成物の 1種として、 本出願人の一人は先に、 印 刷物にカラ一再帰反射機能を生産性よく、 かつ効率良く付与して、 夜間において も遠方からの視認性を高めて防犯または安全に寄与すると共に、 カラー化により ファ ッショ ン性をも付与することによって商品の表現力が大きく広がり商品価値 を高め得る再帰反射性印刷用インク組成物を開発し、 特許出願した (特願平 1 1 — 1 1 5 3 9 5号)。  As one kind of such a retroreflective ink composition, one of the present applicants has previously provided a print sheet with a colorless retroreflective function with good productivity and efficiency, and even from a distance at night. We have developed a retroreflective printing ink composition that enhances visibility and contributes to crime prevention or safety, and also enhances the expressiveness of the product by giving it fashionability through colorization. A patent application was filed (Japanese Patent Application No. 11-1-11 395).
スク リーン印刷等により形成された図柄 (塗膜) に可視光線 (波長 4 0 0〜 7 0 0 n m) を照射したとき、 反射鏡となる粒子がマイ力の場合、 ガラスビーズ を透過した光の一部がマイ力で直ちに反射されるが、 マイ力を通過した光につい ても色素や基材の持つ色の波長部分が色素や基材で反射される。 反射鏡となる粒 子が着色アルミニゥム粒子の場合は、 ガラスビーズを透過した光は着色アルミ二 ゥム粒子の粒子本体で反射される。 これらの反射色光は、 色素の色ゃ基材表面の 色や着色アルミニウム粒子の色が合わさった有彩色を持つ再帰反射光として観察 者の目に入る。  When a pattern (coating film) formed by screen printing or the like is irradiated with visible light (wavelength: 400 to 700 nm), if the particles serving as the reflecting mirror are of my power, the light transmitted through the glass beads A part of the light is immediately reflected by my force, but the wavelength portion of the color of the dye or the base material is also reflected by the dye or base material for light passing through the my force. When the particles serving as the reflecting mirror are colored aluminum particles, the light transmitted through the glass beads is reflected by the colored aluminum particle particles themselves. The reflected color light enters the observer's eyes as a chromatic retroreflected light in which the color of the dye is combined with the color of the substrate surface and the color of the colored aluminum particles.
本発明においては、 透明画像フィルム 1は、 基材 2の再帰反射面上に重ね合わ されておりさえすれば、 貼り合わされる必要は必ずしもないが、 貼り合わされて いると取扱いが容易になり、 様々な用途において有利である。 貼り合わせは、 い かなる方法によっても良いが、 一般的には接着剤が使用され、 好ましい接着剤の 種類としては、 ェマルジヨ ン型、 溶液型、 ホッ トメルト型の粘着剤や接着剤が挙 げられる。 接着剤を使用する場合には、 フィルム面か基材再帰反射面のどちらか 一方に塗布して接着する方法や、 ホットメルト型接着剤シートをフィルム面と基 材再帰反射面との間に挟んで接着する方法などによる。 なお、 ここで言うホッ ト メルト型接着剤シートとは、 ホットメルト性を有する高分子物質からなる、 フィ ルム、 織物、 編み物、 不織布などの平面形状を有するものを指す。 In the present invention, as long as the transparent image film 1 is superimposed on the retroreflective surface of the substrate 2, it is not always necessary to laminate the transparent image film 1. It is advantageous in applications. Bonding Although such a method may be used, an adhesive is generally used, and preferred types of the adhesive include an emulsion type, a solution type, and a hot melt type adhesive and an adhesive. When using an adhesive, apply it to either the film surface or the substrate retroreflective surface and bond it, or place a hot-melt adhesive sheet between the film surface and the substrate retroreflective surface. Depending on the method of bonding. The hot-melt-type adhesive sheet referred to here refers to a sheet, such as a film, a woven fabric, a knitted fabric, or a nonwoven fabric, made of a polymer material having a hot melt property and having a planar shape.
本発明において、 接着剤層 3が透明性に乏しい場合は、 透明フィルム 1 0に印 刷された画像に対して占有面積が 9 0 %未満であることが好ましい。 言い換える と、 透明フィルム 1 0に印刷された画像に対し、 接着剤の付かない面 (非接着 面) が 1 0 %以上残っていることが好ましいと言うことである。  In the present invention, when the adhesive layer 3 has poor transparency, it is preferable that the occupied area of the image printed on the transparent film 10 be less than 90%. In other words, it is preferable that, on the image printed on the transparent film 10, 10% or more of the surface to which no adhesive is attached (non-adhesive surface) remains.
このような接着剤層を得る手段としては、 いかなる方法を用いてもよい。 例え ばグラビアコーティングにより点状や平行線状、 格子状などの模様を作る方法が ある。 ここで、 もし非接着面の間に水などが浸入した場合、 十分な再帰反射性が 得られにく くなるので、 格子状や亀甲状など、 連続した線で、 しかも閉じた模様 に接着剤層を作ることが、 非接着面を外部から遮断することになり、 特に好まし レ、。  As a means for obtaining such an adhesive layer, any method may be used. For example, there is a method of creating dot-like, parallel-line, or lattice-like patterns by gravure coating. Here, if water or the like enters between the non-adhesive surfaces, it will be difficult to obtain sufficient retroreflectivity, so the adhesive will be a continuous line, such as a grid or a turtle, and a closed pattern. The formation of a layer shields the non-adhesive surface from the outside, and is particularly preferred.
本発明における好ましい形態が、 画像層 1 1の上に透明フィルム 1 3からなる 保護層を設けておくことであることは、 前述した。 このような保護層を形成する 手段としては、 例えば、 ホットメルト接着剤付きフィルムを熱圧着する方法ゃラ ミネ一タ一用フィルムで熱圧着する方法があるが、 これらに限定されることはな レ、。  As described above, a preferred embodiment of the present invention is to provide a protective layer made of the transparent film 13 on the image layer 11. Means for forming such a protective layer include, for example, a method of thermocompression bonding a film with a hot melt adhesive and a method of thermocompression bonding with a film for a laminator, but are not limited thereto. Les ,.
本発明において、 基材 2の裏面には、 前述したように、 粘着剤やホットメルト 接着剤等による再剥離層 5が形成されていても良い。 このようにしておく と、 得 られる再帰反射シートは、 シールやワッペン、 ステッカーなどとして、 容易に好 きな場所に貼ることができるようになる。 特に、 再剥離可能な粘着加工を施せば、 貼り付け、 取り外しが繰り返し自由にできるようになる。  In the present invention, the re-peelable layer 5 may be formed on the back surface of the base material 2 by using an adhesive, a hot melt adhesive, or the like, as described above. By doing so, the obtained retroreflective sheet can be easily attached to a desired place as a seal, an emblem, a sticker, or the like. In particular, if re-peelable adhesive processing is applied, it can be repeatedly attached and removed repeatedly.
再剥離可能な粘着加工方法としては、 粘着剤自体の粘着力が低いもの、 粘着剤 中に可塑剤を加えたもの、 粘着剤層表面に凹凸を設けたもの (実開昭 4 8— 6 7 060号、 同 49— 1 1 645 3号、 同 50— 1 756 1号、 同 53— 13 54 74号、 同 59— 1 33641号など)、 粘着性の微小球を粘着剤層中に含ませ たもの (特公昭 58— 18959号、 同平 1— 33516号、 特開昭 50— 2 7 36号、 同 53— 65330号、 同 61— 28 1 1 73号、 同 62— 14398 8号など) などの各公報で提案されており、 いずれの方法であってもよい。 Removable adhesive processing methods include those with low adhesive strength of the adhesive itself, those with a plasticizer added to the adhesive, and those with irregularities on the surface of the adhesive layer. No. 060, No. 49-1-16453, No. 50-17561, No. 53-13 54 74, No. 59-1 33641), and adhesive microspheres are included in the adhesive layer. (No. 58-18959, No. 1-33516, No. 50-23736, No. 53-65330, No. 61-281171, No. 62-143988, etc.) Etc., and any method may be used.
本発明にかかる、 視認性に優れた画像シートは、 道路標識、 案内標識、 工事標 識などの標識類、 衣服、 靴、 鞫、 救命用具などへの安全標示類などの従来からあ る用途で、 表現の幅を大きく広げることを可能とし、 さらに大型看板やポスター などの広告類、 個人のオリジナルシール、 オリジナルステッカーなどのホビー用 途まで、 従来不可能であった用途をも可能とするものである。  The image sheet with excellent visibility according to the present invention can be used for conventional applications such as road signs, information signs, construction signs, and other safety signs, and clothes, shoes, shoes, safety equipment, and other safety signs. , Which greatly expands the range of expression, and also enables applications that were previously impossible, such as advertisements such as large billboards and posters, and original hobby applications such as personal seals and original stickers. is there.
本発明にかかる、 画像印刷シートは、 本発明にかかる、 このような視認性に優 れた画像シ一トを容易に得させる。 実施例  The image printing sheet according to the present invention facilitates obtaining such an image sheet excellent in visibility according to the present invention. Example
以下に実施例を示して、 本発明をより具体的に説明する。 かかる実施例は、 本 発明の一実施態様を示すに過ぎず、 本発明を限定するものではない。 したがって、 本発明は、 その特徴を損なわない範囲で任意に変更が可能である。  Hereinafter, the present invention will be described more specifically with reference to examples. Such examples are merely illustrative of one embodiment of the present invention and do not limit the present invention. Therefore, the present invention can be arbitrarily changed within a range that does not impair the features.
なお、 以下の実施例のいくつかにおいて行った促進耐候性テス トは、 スガ試験 機株式会社製デューサイクル式サンシャインカーボン促進耐候性試験機を用いて J I S Z 911 7の 7. 5の ( 1) に示す方法で 曝露し、 80時間後の外 観の状態を観察した。  The accelerated weathering test conducted in some of the following examples was carried out according to JISZ9117 7.5 (1) using a ducycle type sunshine carbon accelerated weathering tester manufactured by Suga Test Instruments Co., Ltd. Exposure was performed according to the method shown, and the state of appearance after 80 hours was observed.
(実施例 1 )  (Example 1)
合成織物布帛 (ポリエステルボンジー) の全面に、 80メ ッシュのスクリーン 紗を使用して、 再帰反射性インキ (株式会社小松プロセス製アートブライ トカラ 一シルバー) をスク リーン印刷したのち、 乾燥機を用い、 1 75°Cで 3分間熱処 理して、 再帰反射性布帛 (基材) 2を得た。  The entire surface of the synthetic woven fabric (polyester bondee) is screen-printed with retroreflective ink (Art Bright Co., Ltd. made by Komatsu Process Co., Ltd.) using an 80-mesh screen gauze, and then dried using a dryer. Heat treatment was performed at 1 75 ° C for 3 minutes to obtain a retroreflective cloth (base material) 2.
他方、 インクジヱッ ト専用 OHPシート (セイコーエプソン株式会社製) のィ ンク受理層面に、 インクジェッ トプリ ンター (セイコーエプソン株式会社製 PM - 770 C) を用いてフルカラーの画像を印刷して、 透明画像フィルム 1を得た。 図 2に見るように、 上記再帰反射性布帛 2の再帰反射面の上に上記透明画像フ イルム 1を置き、 さらにその上にガラス板 6を置いて、 周囲を枠で固定すること により、 フルカラーの再帰反射性画像シートを得た。 図 2中、 1 0は透明フィル ム、 1 1は画像層、 4は空気層である。 On the other hand, a full-color image is printed on the ink-receiving layer of an ink-jet OHP sheet (manufactured by Seiko Epson Corporation) using an inkjet printer (manufactured by Seiko Epson Corporation PM-770C). I got As shown in FIG. 2, the transparent image film 1 is placed on the retroreflective surface of the retroreflective cloth 2, the glass plate 6 is further placed thereon, and the periphery is fixed with a frame, thereby providing a full color image. Was obtained. In FIG. 2, 10 is a transparent film, 11 is an image layer, and 4 is an air layer.
この再帰反射性画像シートを、 暗閽で 1 0 m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 暗闇で 1 0 O m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。 この再帰反射性画像シートを促進耐候性テストした結果を表 1に示す。  When this retroreflective image sheet was illuminated with a flashlight from a distance of 10 m in the dark, the image could be clearly recognized. Also, from a distance of 10 Om in the dark, when illuminated with a car headlight, the presence was easily recognized. Table 1 shows the results of accelerated weathering test of this retroreflective image sheet.
(実施例 2 )  (Example 2)
実施例 1と同様にして、 再帰反射性布帛と透明画像フィルムを得た。  In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained.
次に、 離型紙上に再剥離性のアク リル樹脂粘着剤溶液 (根上工業株式会社製、 商品名パラクロン M E— 2 0 0 0、 固形分 2 0重量%) を乾燥厚みが 1 0 μ ιηと なるように塗布、 乾燥し、 その上に上記再帰反射性布帛を、 その再帰反射面が表 に出るようにして貼り合わせることにより、 再剥離性の粘着加工の施された再帰 反射性布帛とした。  Next, a removable acrylic resin adhesive solution (manufactured by Negami Kogyo Co., Ltd., trade name: Paracron ME—200, solid content: 20% by weight) was dried on release paper to a dry thickness of 10 μιη. Coating and drying so that the retroreflective cloth is adhered thereon so that the retroreflective surface is exposed, to thereby obtain a retroreflective cloth which has been subjected to a removable adhesive processing. .
他方、 上記透明画像フィルムの非印刷面に、 アク リル樹脂粘着剤溶液 (根上ェ 業株式会社製パラクロン A S— 3 0 0 0 Ε、 固形分 3 0 % ) を線幅 0 . 1 cm、 間 隔 l cniの格子状に塗布、 乾燥して、 粘着剤付き透明画像フィルムとした。  On the other hand, an acrylic resin pressure-sensitive adhesive solution (Paraklon AS-30000 mm, solid content: 30%) manufactured by Negami Co., Ltd., having a line width of 0.1 cm and a space of 0.1 cm was applied to the non-printing surface of the transparent image film. It was applied in a grid pattern of lcni and dried to obtain a transparent image film with an adhesive.
上記再帰反射性布帛の再帰反射面に上記粘着剤付き透明画像フィルムの粘着面 を貼り合わせて、 フルカラーの再帰反射性画像シートを得た。  The adhesive surface of the transparent image film with an adhesive was adhered to the retroreflective surface of the retroreflective cloth to obtain a full-color retroreflective image sheet.
この再帰反射性画像シートを、 暗闇で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 喑闇で 1 0 0 m離れたとこ ろから、 自動車のヘッ ドライ トで照らしたところ、 存在が容易に認識できた。 また、 この再帰反射性画像シートは、 その背面の離型紙を剥がすと、 再剥離性 の粘着加工面が現れるので、 好きな場所に貼り付けることができ、 そののち取り 外しもできるものであった。  When this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. Also, from a distance of 100 m in the dark, when illuminated with a car headlight, the presence was easily recognized. In addition, when the release paper on the back surface of this retroreflective image sheet is peeled off, a re-peelable adhesive-treated surface appears, so it can be attached to a desired location and then removed. .
(実施例 3 )  (Example 3)
実施例 1と同様にして、 再帰反射性布帛と透明画像フィルムを得た。  In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained.
上記再帰反射性布帛の再帰反射面に、 ホッ トメルト接着剤 (ダイセルヒュルス 株式会社製 X I 3 1 6、 固形分 3 0 % ) を線幅 0 . l cm、 間隔 l cm の格子状に 塗布し、 上記透明画像フィルムの非印刷面をその上に熱圧着することにより貼り 合わせて、 フルカラ一の再帰反射性シートを得た。 A hot-melt adhesive (Daicel Huls) is applied to the retroreflective surface of the retroreflective cloth. Co., Ltd., XI 316, solid content 30%) is applied in a grid pattern with a line width of 0.1 cm and an interval of 1 cm, and the non-printing surface of the transparent image film is bonded by thermocompression. Together, a full-color retroreflective sheet was obtained.
この再帰反射性画像シートを、 暗闇で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 喑閽で 1 0 O m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。  When this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. In addition, when it was illuminated by a car headlight from a distance of 10 Om at 喑 閽, its presence could be easily recognized.
(実施例 4 )  (Example 4)
実施例 1と同様にして、 再帰反射性布帛 2と透明画像フィルム 1を得た。 ただ し、 この場合、 画像は、 コンピュータ一処理により、 左右反転した画像とした。 図 3に見るように、 上記透明画像フィルム 1の印刷面に、 ホットメルト接着剤 を線幅 0 . l cm、 間隔 l cm の格子状に塗布し、 上記再帰反射性布帛 2の再帰反 射面を熱圧着することにより貼り合わせて、 フルカラーの再帰反射性シートを得 た。 図 3中、 1 0は透明フィルム、 1 1は画像層、 3は接着剤層、 4は空気層で ある。  In the same manner as in Example 1, a retroreflective cloth 2 and a transparent image film 1 were obtained. However, in this case, the image was turned left and right by computer processing. As shown in FIG. 3, a hot-melt adhesive was applied to the printing surface of the transparent image film 1 in a grid pattern having a line width of 0.1 cm and an interval of 1 cm, and the retroreflective surface of the retroreflective cloth 2 was applied. Were bonded by thermocompression bonding to obtain a full-color retroreflective sheet. In FIG. 3, 10 is a transparent film, 11 is an image layer, 3 is an adhesive layer, and 4 is an air layer.
この再帰反射性面像シートを、 喑闇で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 喑閽で 1 0 0 m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。  When this retroreflective sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. Also, from a distance of 100 m from 喑 閽, when illuminated by a car headlight, the presence was easily recognized.
(実施例 5 )  (Example 5)
実施例 1と同様にして、 再帰反射性布帛と透明画像フィルムを得た。 ただし、 この場合、 画像は、 コンピュータ一処理により、 左右反転した画像とした。  In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained. However, in this case, the image was turned left and right by computer processing.
上記再帰反射性布帛の再帰反射面に、 ホットメルト接着剤を線幅 0 . l cm、 間 隔 l cra の格子状に塗布し、 上記透明画像フィルムの印刷面を熟圧着することに より貼り合わせて、 フルカラーの再帰反射性シートを得た。  A hot-melt adhesive is applied to the retroreflective surface of the retroreflective fabric in a grid pattern with a line width of 0.1 cm and an interval of 1 cra, and the printed surface of the transparent image film is firmly pressed and bonded. Thus, a full-color retroreflective sheet was obtained.
この再帰反射性面像シートを、 喑闇で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 暗闇で 1 0 O m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。  When this retroreflective sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. Also, from a distance of 10 Om in the dark, when illuminated with a car headlight, the presence was easily recognized.
(実施例 6 )  (Example 6)
実施例 1と同様にして、 再帰反射性布帛と透明画像フィルムを得た。  In the same manner as in Example 1, a retroreflective cloth and a transparent image film were obtained.
上記再帰反射性布帛の再帰反射面に、 2 5メッシュの熱可塑性ポリウレタン不 織布を置き、 この不織布に非印刷面が接するようにして透明画像フィルムを重ね て、 上から熱圧着することにより貼り合わせて、 フルカラーの S帰反射性シート を得た。 On the retroreflective surface of the retroreflective cloth, a 25-mesh thermoplastic polyurethane A woven fabric was placed, a transparent image film was overlaid so that the non-printing surface was in contact with the nonwoven fabric, and bonded by thermocompression bonding from above to obtain a full-color S-reflective sheet.
この再帰反射性画像シートを、 喑闇で 1 0 m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 喑閽で 1 0 0 m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。  When this retroreflective image sheet was illuminated with a flashlight from a distance of 10 m in the dark, the image was clearly recognizable. Also, from a distance of 100 m from 喑 閽, when illuminated by a car headlight, the presence was easily recognized.
(実施例 7〉  (Example 7)
ポリビニルピロリ ドンの 1 0重量%水溶液 1 0 0重量部に微粉末シリカ 5重量 部を加え、 水平型ビーズミルを用いて粉砕 '分散し、 インクジェッ トインク受理 剤を得た。  5 parts by weight of fine powdered silica was added to 100 parts by weight of a 100% by weight aqueous solution of polyvinylpyrrolidone, and pulverized and dispersed using a horizontal bead mill to obtain an ink-jet ink receiving agent.
離型紙上にポリウレタン樹脂溶液を乾燥厚みが 1 0 0 /z mとなるように塗布、 乾燥し、 その上に上記インクジェットインク受理剤をグラビア印刷により、 一つ の点が直径 Ι Ο μ κιで、 点と点の間隔が 1 2 mの非連続の点状に塗布し、 乾燥 して、 インクジェット受理層を備えた軟質フィルムを前記離型紙上に得た。 ポリ ビニルピロリ ドン自体は硬い樹脂であるため、 連続コーティングにすると柔軟性 のあるフィルムとならない。 そこで、 インクジェッ トインク受理層の形成は、 上 述のような非連続のグラビア印刷で行い、 ポリウレタン樹脂フィルムの軟質性を 損なわないようにした。  A polyurethane resin solution is applied on release paper so as to have a dry thickness of 100 / zm, dried, and the above-mentioned inkjet ink receiving agent is gravure-printed thereon, and one point has a diameter of Ι Ομκι, The film was applied in the form of discontinuous dots having a distance between dots of 12 m and dried to obtain a flexible film having an ink jet receiving layer on the release paper. Since polyvinylpyrrolidone itself is a hard resin, continuous coating does not result in a flexible film. Therefore, the inkjet ink receiving layer was formed by discontinuous gravure printing as described above so as not to impair the flexibility of the polyurethane resin film.
上記ィンクジェットインク受理層を備えた軟質フィルムのィンクジェッ トイン ク受理層面に、 インクジェッ トプリンター (セイコーエプソン株式会社製 P M— 7 7 0 C ) を用い、 左右反転したフルカラ一画像を印刷して、 軟質透明画像ブイ ルムを得た。  Using an inkjet printer (PM-770C, manufactured by Seiko Epson Corporation), print a full-color image that has been flipped left and right on the ink-ink receiving layer surface of the flexible film having the ink-jet ink receiving layer. A soft transparent image film was obtained.
実施例 2と同様にして、 再帰反射性布帛の再帰反射面に格子状にホットメルト 接着剤を塗布し、 反対面には同じホットメルト接着剤を全面塗布して、 両面にホ ットメルト接着剤を塗布した再帰反射性布帛を得た。  In the same manner as in Example 2, a hot-melt adhesive was applied in a grid pattern on the retroreflective surface of the retroreflective fabric, and the same hot-melt adhesive was applied on the entire opposite surface, and the hot-melt adhesive was applied to both surfaces. A coated retroreflective fabric was obtained.
Tシャツ上に上記再帰反射性布帛と軟質透明画像フイルムとを、 Tシャツと再 帰反射性布帛の非再帰反射面が向かい合い、 再帰反射性布帛の再帰反射面と軟質 透明面像フィルムの印刷面とが向かい合うようにして重ね合わせ、 熱圧着するこ とにより貼り合わせたのち、 軟質透明画像フィルムから離型紙を剥がすと、 オリ ジナルの再帰反射画像をプリントした丁シャツができた。 The retroreflective cloth and the soft transparent image film are placed on the T-shirt, the non-retroreflective surfaces of the T-shirt and the retroreflective cloth face each other, and the retroreflective face of the retroreflective cloth and the soft transparent image film are printed. When the release paper is peeled off from the soft transparent image film, it is Ding shirts printed with Zinal's retroreflective images are now available.
この再帰反射性 Tシャツを、 喑閽で 1 O m離れたところから、 懐中電灯の光で 照らしたところ、 画像が鮮明に認識できた。 また、 暗閽で 1 0 O m離れたところ から、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。  When this retroreflective T-shirt was illuminated with a flashlight from a distance of 1 Om from 喑 閽, the image was clearly recognizable. When it was illuminated with a car headlight from a distance of 10 Om in the dark, the presence was easily recognized.
(比較例 1 )  (Comparative Example 1)
合成織物布帛に再帰反射加工を施さないで、 そのまま用いるようにする他は、 実施例 1と同様にして、 フルカラー画像シートを得た。  A full-color image sheet was obtained in the same manner as in Example 1 except that the synthetic woven fabric was used as it was without performing retroreflection.
このフルカラ一画像シートは、 喑閣で 1 O m離れたところから、 懐中電灯の光 で照らしても、 画像が認識できなかった。 また、 喑閽で 1 0 O m離れたところか ら、 自動車のヘッドライ トで照らしたところ、 存在が認識できなかった。  This full color image sheet could not be recognized even when it was illuminated with a flashlight from a distance of 1 Om in the cabinet. Also, when it was illuminated by a car headlight from a distance of 10 Om from 喑 閽, its presence could not be recognized.
(実施例 8 )  (Example 8)
透明画像フィルムの非印刷面に、 ァクリル樹脂粘着剤溶液を全面に塗布するよ うにする他は、 実施例 1と同様にして、 フルカラー画像シートを得た。  A full-color image sheet was obtained in the same manner as in Example 1, except that the acryl resin adhesive solution was applied to the entire non-printing surface of the transparent image film.
この再帰反射性フルカラ一画像シートは、 喑闍で 1 O m離れたところから、 懐 中電灯の光で照らしたところ、 画像は識別できたが、 反射光は少し弱かった。 暗 闇で 1 0 O m離れたところから、 自動車のヘッドライ トで照らした場合にも、 そ の存在は認識できたが、 やはり反射光が少し弱かつた。  When this retroreflective full-color image sheet was illuminated with a flashlight from a distance of 1 Om in the distance, the image could be identified, but the reflected light was slightly weak. When it was illuminated by a car headlight from a distance of 10 Om in the dark, its presence could be recognized, but the reflected light was still weak.
(実施例 9 )  (Example 9)
銀塩写真方式のフジカラーサ一ビス株式会社提供フジカラー Gポスタ一を利用 して、 フルカラーの透明画像フィルムを得たことの他は、 実施例 1と同様にして, フルカラーの再帰反射性画像シートを得た。  A full-color retroreflective image sheet was prepared in the same manner as in Example 1 except that a full-color transparent image film was obtained using Fujicolor G poster provided by Fujicolor Service Co., Ltd. Obtained.
この再帰反射性画像シートは、 喑闇で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 喑闇で 1 0 0 m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。  When this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om in the dark, the image was clearly recognizable. Also, from a distance of 100 m in the dark, when illuminated with a car headlight, the presence was easily recognized.
この再帰反射性画像シートを促進耐候性テストした結果を表 1に示す。  Table 1 shows the results of accelerated weathering test of this retroreflective image sheet.
(実施例 1 0 )  (Example 10)
実施例 1 と同様にして得た透明画像フィルムをホットメルトラミネーター (株 式会社明光商会製 M S P O U C H H— 3 2 0— Z ) を用いて全面をラミネ一 ト加工した。 このラミネ一ト加工済み透明画像フィルムを使用することの他は、 実施例 1と同様にして、 フルカラ一の再帰反射性画像シートを得た。 この再帰反射性面像シートは、 喑閽で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 暗闇で 1 0 0 m離れたとこ ろから、 自動車のヘッドライ トで照らしたところ、 存在が容易に認識できた。 なお、 この再帰反射性画像シートを促進耐候性テス トした結果を表 1に示す。 ラミネート加工を施した実施例 1 0の再帰反射性画像シートは、 実施例 1の再帰 反射性画像シー卜より耐候性が格段に優れていることがわかる。 The entire surface of the transparent image film obtained in the same manner as in Example 1 was laminated using a hot melt laminator (MSPOUCHH-320-Z, manufactured by Meiko Shokai Co., Ltd.). Other than using this laminated processed transparent image film, In the same manner as in Example 1, a full-color retroreflective image sheet was obtained. When this retroreflective sheet was illuminated with a flashlight from a distance of 1 Om from 喑 閽, the image was clearly recognizable. Also, from a distance of 100 m in the dark, when illuminated with the headlights of a car, the presence was easily recognized. Table 1 shows the results of accelerated weather resistance testing of this retroreflective image sheet. It can be seen that the retroreflective image sheet of Example 10 subjected to the laminating process has much better weather resistance than the retroreflective image sheet of Example 1.
(実施例 1 1 )  (Example 11)
実施例 9と同様にして得た透明画像フィルムをホットメノレトラミネ一ター (株 式会社明光商会製 M S P O U C H H— 3 2 0— Z ) にて全面をラミネート加 ェした。 このラミネート加工済み透明画像フィルムを使用することの他は、 実施 例 1と同様にして、 フルカラーの再帰反射性画像シートを得た。  The entire surface of the transparent image film obtained in the same manner as in Example 9 was laminated with a hot menoret laminator (MSPOUCHH-320-Z manufactured by Meiko Shokai Co., Ltd.). A full-color retroreflective image sheet was obtained in the same manner as in Example 1 except for using this laminated transparent image film.
この再帰反射性画像シートは、 喑閹で 1 O m離れたところから、 懐中電灯の光 で照らしたところ、 画像が鮮明に認識できた。 また、 暗闇で 1 0 O m離れたとこ ろから、 自動車のへッ ドライ トで照らしたところ、 存在が容易に認識できた。 この再帰反射性画像シートを促進耐候性テストした結果を表 1に示す。 ラミネ —ト加工を施した実施例 1 1の再帰反射性画像シートは、 実施例 9の再帰反射性 画像シ一トより耐候性が格段に優れている。 表 1  When this retroreflective image sheet was illuminated with a flashlight from a distance of 1 Om from the eaves, the image was clearly recognizable. When it was illuminated with a car headlight from a distance of 10 Om in the dark, its presence could be easily recognized. Table 1 shows the results of accelerated weathering test of this retroreflective image sheet. The retroreflective image sheet of Example 11 subjected to the laminating process has much better weather resistance than the retroreflective image sheet of Example 9. table 1
Figure imgf000017_0001
Figure imgf000017_0001
〇 · · '画像が元の濃度で残っている  画像 · · 'The image remains at the original density
△ · · '画像が元の濃度が半減している  △ · · 'The original image density is halved
X - · ·画像がほとんど残っていない  X-There are few images left

Claims

請 求 の 範 囲 The scope of the claims
1 . 画像が印刷された透明フィルムを、 再帰反射性を有する基材の再帰反射面に 重ね合わせてなる、 視認性に優れた画像シート。 1. An image sheet with excellent visibility, in which a transparent film on which an image is printed is superimposed on the retroreflective surface of a substrate having retroreflective properties.
2 . 前記重ね合わせが貼り合わせにより固定されている、 請求項 1に記載の視認 性に優れた画像シ一ト。  2. The image sheet with excellent visibility according to claim 1, wherein the superposition is fixed by bonding.
3 . 前記透明フィルムに施された画像が、 凸版印刷、 凹版印刷、 平版印刷、 孔版 印刷、 インクジェッ ト印刷、 昇華型熱転写印刷、 溶融型熱転写印刷、 静電トナー 印刷、 銀塩写真およびレーザー露光銀塩写真の中から選ばれた少なく とも 1つの 印刷方式により印刷されたものである、 請求項 1または 2に記載の視認性に優れ た画像シ一ト。  3. The image applied to the transparent film is relief printing, intaglio printing, lithographic printing, stencil printing, ink jet printing, sublimation type thermal transfer printing, fusion type thermal transfer printing, electrostatic toner printing, silver halide photography, and laser exposure silver. 3. The image sheet with excellent visibility according to claim 1, wherein the image sheet is printed by at least one printing method selected from salt photographs.
4 . 画像印刷された透明フィルムの印刷面の上に第 2の透明フイノレムを貼り合わ せてなる、 請求 1から 3までのいずれかに記載の視認性に優れた画像シ一ト。  4. The image sheet having excellent visibility according to any one of claims 1 to 3, wherein a second transparent finolem is laminated on a printing surface of the image-printed transparent film.
5 . 前記再帰反射性を有する基材の裏面に再剥離性の粘着加工が施されている、 請求項 1から 4までのいずれかに記載の視認性に優れた画像シ一ト。 5. The image sheet excellent in visibility according to any one of claims 1 to 4, wherein a back surface of the substrate having the retroreflective property is subjected to a releasable adhesive treatment.
6 . 請求項 1から 5までのいずれかに記載の視認性に優れた画像シ一トを得るた めのシートであって、 表面が印刷適性を有する透明フィルムの裏面に、 再帰反射 性を有する基材の再帰反射面を貼り合わせてなる、 画像印刷用シ一ト。 6. A sheet for obtaining an image sheet having excellent visibility according to any one of claims 1 to 5, wherein the front surface has a retroreflective property on the back surface of a transparent film having printability. An image printing sheet made by bonding the retroreflective surface of a substrate.
7 . 前記透明フィルムが、 インクジェット印刷方式による画像作成が可能で透明 なインク受理層を持ち、 印刷適性を有するようになつている、 請求項 6に記載の 画像印刷用シ一ト。  7. The image printing sheet according to claim 6, wherein the transparent film has a transparent ink receiving layer capable of forming an image by an inkjet printing method and has printability.
PCT/JP2001/003187 2000-04-19 2001-04-13 Image sheet excellent in visibility and sheet for producing the same WO2001080208A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000118680 2000-04-19
JP2000-118680 2000-04-19

Publications (1)

Publication Number Publication Date
WO2001080208A1 true WO2001080208A1 (en) 2001-10-25

Family

ID=18629771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/003187 WO2001080208A1 (en) 2000-04-19 2001-04-13 Image sheet excellent in visibility and sheet for producing the same

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Country Link
WO (1) WO2001080208A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316434A3 (en) * 2001-12-03 2004-03-03 Trip Industries Holding B.V. Process for making weather proof and chemical-resistant outdoor signs and signs made thereby
US8496340B2 (en) 2007-12-21 2013-07-30 3M Innovative Properties Company Retroreflective articles and retroreflective elements comprising a spherical core and two concentric optical interference layers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623066U (en) * 1992-06-25 1994-03-25 邦彦 小島 Label structure
JP3040893U (en) * 1997-02-24 1997-09-05 株式会社丸仁 Retroreflective tape for personal accessories

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623066U (en) * 1992-06-25 1994-03-25 邦彦 小島 Label structure
JP3040893U (en) * 1997-02-24 1997-09-05 株式会社丸仁 Retroreflective tape for personal accessories

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316434A3 (en) * 2001-12-03 2004-03-03 Trip Industries Holding B.V. Process for making weather proof and chemical-resistant outdoor signs and signs made thereby
US8496340B2 (en) 2007-12-21 2013-07-30 3M Innovative Properties Company Retroreflective articles and retroreflective elements comprising a spherical core and two concentric optical interference layers

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