JP2000141863A - Fluorescent material printed matter - Google Patents
Fluorescent material printed matterInfo
- Publication number
- JP2000141863A JP2000141863A JP10328209A JP32820998A JP2000141863A JP 2000141863 A JP2000141863 A JP 2000141863A JP 10328209 A JP10328209 A JP 10328209A JP 32820998 A JP32820998 A JP 32820998A JP 2000141863 A JP2000141863 A JP 2000141863A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent
- image
- phosphor
- ink
- color
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title description 9
- 239000003086 colorant Substances 0.000 claims abstract description 10
- 238000007639 printing Methods 0.000 claims abstract description 8
- 239000000976 ink Substances 0.000 claims description 42
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 29
- 239000000049 pigment Substances 0.000 claims description 12
- 238000010023 transfer printing Methods 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 2
- BFMYDTVEBKDAKJ-UHFFFAOYSA-L disodium;(2',7'-dibromo-3',6'-dioxido-3-oxospiro[2-benzofuran-1,9'-xanthene]-4'-yl)mercury;hydrate Chemical compound O.[Na+].[Na+].O1C(=O)C2=CC=CC=C2C21C1=CC(Br)=C([O-])C([Hg])=C1OC1=C2C=C(Br)C([O-])=C1 BFMYDTVEBKDAKJ-UHFFFAOYSA-L 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000007850 fluorescent dye Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- -1 allyl ester Chemical class 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- CFZXDJWFRVEWSR-BUHFOSPRSA-N indigo carmine (acid form) Chemical compound N/1C2=CC=C(S(O)(=O)=O)C=C2C(=O)C\1=C1/NC2=CC=C(S(=O)(=O)O)C=C2C1=O CFZXDJWFRVEWSR-BUHFOSPRSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004166 Lanolin Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 229940092738 beeswax Drugs 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004204 candelilla wax Substances 0.000 description 1
- 235000013868 candelilla wax Nutrition 0.000 description 1
- 229940073532 candelilla wax Drugs 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 229940082483 carnauba wax Drugs 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- IUJAMGNYPWYUPM-UHFFFAOYSA-N hentriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IUJAMGNYPWYUPM-UHFFFAOYSA-N 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
- 235000019381 petroleum wax Nutrition 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005553 polystyrene-acrylate Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
- B42D25/387—Special inks absorbing or reflecting ultraviolet light
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蛍光体を使用した
耐光性の良好な印刷物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed material using a phosphor and having good light fastness.
【０００２】[0002]
【従来の技術】従来、クレジットカードなどの個々人向
けのカードには、偽造防止の一つとして蛍光染料を使用
した隠し模様の印刷を行ったり、最近では所有者の照合
のために個人の頭部が印像されたりしている。また、パ
スポート、免許証や社員証の身分を照合できる証明書に
は、頭部の写真が貼り付けられたり、印像されたりして
いる。2. Description of the Related Art Conventionally, cards for individuals such as credit cards are printed with a hidden pattern using a fluorescent dye as one of countermeasures against forgery. Has been imprinted. In addition, a photo of the head is pasted or stamped on a certificate that can verify the identity of a passport, license or employee ID card.
【０００３】[0003]
【発明が解決しようとする課題】しかし、このような従
来の証明書やカードでは次のような問題点があった。 （１） パスポート、免許証や社員証などの個人を照合
できる証明書には、個々人の照合のために、頭部の写真
の貼り付けが行われているが、この方法では写真のすり
替えによって容易に偽造することができる。 （２） 最近では個人毎の頭部の写真を印像した個人を
照合できる証明書もあるが、一般染料（色の変化がな
い）を用いているので、別の印像をＣＣＤカメラで読み
込み、カラープリンタにより該印像を出力することによ
り別の証明書やカードを容易に偽造することができる。 （３） クレジットカードなどの個々人向けのカードの
蛍光染料の印刷は、所有者ごとに異なった印刷ではな
く、同じ模様が印刷されているので、蛍光印刷による個
人の識別が困難である。However, such conventional certificates and cards have the following problems. (1) A certificate that can be used to verify an individual, such as a passport, driver's license, or employee ID card, is pasted with a photo of the head for individual verification. Can be forged. (2) Recently, there is a certificate that can verify the individual who imprinted a photograph of the head of each individual, but since a general dye (no color change) is used, another imprint is read by a CCD camera. By outputting the imprint by a color printer, another certificate or card can be easily forged. (3) The printing of fluorescent dye on a card for an individual such as a credit card is not different for each owner, but the same pattern is printed. Therefore, it is difficult to identify an individual by fluorescent printing.
【０００４】一方、特開平７−１２５４０３公報では個
人識別が可能な蛍光印像の形成方法を開示している。し
かし、該蛍光色素は染料であり、ポリスチレンやポリメ
チルメタアクリレートなどの透明樹脂に相溶させて使用
するものであり、色は鮮やかで着色力も大きい長所があ
る反面、顔料系と比べて耐光性が悪く、クレジットカー
ドなどのセキュリティ用として使用するには信頼性に欠
けるという問題がある。また、透明性が高すぎるため
に、下地色の影響を受け易い、下地（カード、基材
など）の表面で紫外線および発光光（蛍光）の一部が吸
収され発光効率が低下するなどの問題がある。On the other hand, Japanese Patent Application Laid-Open No. Hei 7-125403 discloses a method of forming a fluorescent image capable of identifying individuals. However, the fluorescent dye is a dye, which is used by being compatible with a transparent resin such as polystyrene or polymethyl methacrylate. However, there is a problem that it is not reliable for use in security of credit cards and the like. In addition, since the transparency is too high, it is easily affected by the background color, and the surface of the base (card, base material, etc.) absorbs a part of the ultraviolet light and emission light (fluorescence) to lower the luminous efficiency. There is.
【０００５】[0005]
【課題を解決するための手段】本発明はこれらの上記問
題点を解決するために、クレジットカードのような個々
人向けのカードや、パスポート、免許証、社員証などの
所有者を照合できる証明書において、紫外線を照射する
と蛍光を発するパターンまたは画像などの印像が赤・緑
・青の３色からなる蛍光インクで構成されていて、これ
ら印像を形成するインクが点の集合体と少なくとも２色
以上の重ね合わせのいづれかあるいは両方からなってお
り、インクに白色系無機蛍光体を用いた印刷物とした。SUMMARY OF THE INVENTION In order to solve these problems, the present invention provides a card for an individual such as a credit card and a certificate capable of verifying an owner such as a passport, a license or an employee ID card. Wherein an image such as a pattern or an image which emits fluorescence when irradiated with ultraviolet light is composed of fluorescent ink of three colors of red, green and blue, and the ink forming these images is an aggregate of dots and at least 2 The printed matter was made of one or both of superimposed colors or more, and using a white inorganic phosphor as the ink.
【０００６】上述の無機蛍光体（顔料）は耐光性、耐熱
性、耐溶剤性に優れているが着色力が小さいという問題
がある。しかし、白色系無機蛍光体では、紫外線が照射
されると特定の可視光線を吸収することがない上に、該
蛍光体粒子の界面や内部では、入射面での紫外線の乱
反射または散乱、粒子内における一部の紫外線の波長
エネルギ変換（紫外線→蛍光発光）、残り紫外線の出
射面での乱反射または散乱などの作用が起こる。The above-mentioned inorganic phosphors (pigments) are excellent in light resistance, heat resistance, and solvent resistance, but have a problem of low coloring power. However, the white inorganic phosphor does not absorb a specific visible ray when irradiated with ultraviolet rays, and further, at the interface or inside of the phosphor particles, irregular reflection or scattering of the ultraviolet rays on the incident surface, the inside of the particles. In this case, an action such as wavelength energy conversion of a part of ultraviolet rays (ultraviolet light → fluorescence emission) and irregular reflection or scattering on the exit surface of the remaining ultraviolet rays occur.
【０００７】このために該蛍光体粒子はインク中に多く
含まれているから波長エネルギ変換されていない紫外線
は他の粒子と前記〜の作用を繰り返しながらインク
深部に進み波長エネルギ変換が効率よく実行されて蛍光
を発する利点があり、更には下地色の影響も受け難い利
点がある。本発明者らが、主に波長が４００ｎｍ以下で
ありピーク波長が３６５ｎｍあるいは２５３．７ｎｍの
紫外線（以下、単に紫外線と言う。）を用いて鋭意研究
を重ねた結果、該紫外線を無機蛍光体そのものに照射し
たとき、その蛍光色がＸＹＺ表色系において、 赤色蛍光体はｘが０．５５〜０．７０、さらに好ましく
は０．５７〜０．６８ ｙが０．２５〜０．３５、さらに好ましくは０．２８〜
０．３３ 緑色蛍光体はｘが０．０５〜０．３５、さらに好ましく
は０．１０〜０．３０ ｙが０．５０〜０．７５、さらに好ましくは０．５５〜
０．７２ 青色蛍光体はｘが０．１０〜０．２０、さらに好ましく
は０．１２〜０．１８ ｙが０．０１〜０．２５、さらに好ましくは０．０２〜
０．１５ の範囲の色度特性を有する蛍光体を含有させたインクを
用いて印像を形成させることにより綺麗な蛍光フルカラ
ー印像を得られることが明らかになった。これらの範囲
から逸脱するとこれらインクの２次色であるシアン、マ
ゼンタ、イエローおよび３次色である白色の色表現が困
難となり、良好な蛍光印像を得ることができない。For this reason, since the phosphor particles are contained in a large amount in the ink, the ultraviolet light whose wavelength energy has not been converted proceeds to the deep part of the ink while repeating the above-mentioned operations with other particles, and the wavelength energy conversion is efficiently performed. This has the advantage of emitting fluorescent light and of being less affected by the underlying color. The present inventors have conducted extensive studies mainly using ultraviolet light having a wavelength of 400 nm or less and a peak wavelength of 365 nm or 253.7 nm (hereinafter, simply referred to as ultraviolet light). When the fluorescent material has an XYZ color system, x of the red phosphor is 0.55 to 0.70, more preferably 0.57 to 0.68, and y is 0.25 to 0.35. Preferably 0.28-
0.33 x of the green phosphor is preferably 0.05 to 0.35, more preferably 0.10 to 0.30, and y is 0.50 to 0.75, more preferably 0.55 to 0.75.
0.72 In the blue phosphor, x is 0.10 to 0.20, more preferably 0.12 to 0.18, y is 0.01 to 0.25, and still more preferably 0.02 to 0.25.
It was revealed that a clear fluorescent full-color image can be obtained by forming an image using an ink containing a phosphor having a chromaticity characteristic in the range of 0.15. If the amount deviates from these ranges, it becomes difficult to express the secondary colors cyan, magenta, yellow and the tertiary color white, and a good fluorescent image cannot be obtained.
【０００８】個々人の隠し印像が当人のものと合致する
かどうかを識別する場合は肉眼で判定できた方が好まし
い。このような観点から蛍光インクリボン中に含まれる
白色系無機蛍光体の坪量（顔料坪量）が、０．４ｇ／ｍ
2よりも少ないと蛍光強度が十分でなく、紫外線を照射
したときに得られる蛍光印像は視認が困難となる。した
がって、０．４ｇ／ｍ2以上、さらに好ましくは１ｇ／
ｍ2以上の顔料坪量とすることが好ましい。[0008] In order to discriminate whether or not an individual's hidden seal image matches that of the individual, it is preferable that the judgment can be made with the naked eye. From such a viewpoint, the basis weight (pigment basis weight) of the white inorganic phosphor contained in the fluorescent ink ribbon is 0.4 g / m 2.
If it is less than 2 , the fluorescence intensity is not sufficient, and it becomes difficult to visually recognize the fluorescent image obtained when irradiating with ultraviolet rays. Therefore, 0.4 g / m 2 or more, more preferably 1 g / m 2
The pigment basis weight is preferably at least m 2 .
【０００９】しかし、パターンなどの印像を読取装置で
読み取る場合は、一般的に肉眼よりもセンサーの方が十
分感度が高いから、前記下限量よりも少量であっても読
取りは可能である。本発明を用いればこのような読取装
置用にも利用することができる。顔料坪量を増すと蛍光
印像はより鮮明に浮かび上がることから、より多くの顔
料を導入することが好ましい。しかし、無機蛍光体は高
価であるから肉眼による判定であっても、性能とコスト
を考慮すると１０ｇ／ｍ2が顔料坪量の上限の目安とな
る。However, when a printed image such as a pattern is read by a reading device, the sensor is generally sufficiently sensitive compared to the naked eye, so that reading is possible even with a smaller amount than the lower limit. The present invention can be used for such a reading device. When the pigment basis weight is increased, the fluorescent image becomes clearer, so it is preferable to introduce more pigment. However, since inorganic phosphors are expensive, even in the case of judgment by the naked eye, 10 g / m 2 is a standard for the upper limit of pigment basis weight in consideration of performance and cost.
【００１０】蛍光インク中に含まれる熱溶融性ビヒクル
としては、熱溶融性樹脂類あるいはワックス状物質のい
づれかまたは両方の混合があげられる。該熱溶融性ビヒ
クル全体としての融点または軟化点はブロッキングや熱
転写性の観点から５０〜１２０℃に調整したものが好ま
しい。前記熱溶融性樹脂類としてはキシレン樹脂、エポ
キシ樹脂、エチレン−酢酸ビニル共重合体、エチレン−
アルリル酸エステル共重合体樹脂、アクリル酸エステル
樹脂、ポリアミド樹脂、ポリスチレン樹脂、ポリエステ
ル樹脂、ポリウレタン樹脂などの中から選ばれた１種ま
たは２種以上の混合物が使用できる。[0010] The hot-melt vehicle contained in the fluorescent ink includes either hot-melt resins or waxy substances or a mixture of both. The melting point or softening point of the heat-fusible vehicle as a whole is preferably adjusted to 50 to 120 ° C. from the viewpoint of blocking and heat transferability. As the heat-fusible resin, xylene resin, epoxy resin, ethylene-vinyl acetate copolymer, ethylene-
One or a mixture of two or more selected from an allyl ester copolymer resin, an acrylic ester resin, a polyamide resin, a polystyrene resin, a polyester resin, and a polyurethane resin can be used.
【００１１】前記ワックス状物質としては木ロウ、ミツ
ロウ、ラノリン、カルナバワックス、キャンデリラワッ
クス、モンタンワックスなどの天然ワックス；パラフィ
ンワックス、マイクロクリスタリンワックスなどの石油
系ワックス；酸化ワックス、エステルワックス低分子量
ポリエチレンα−オレフィン−無水マレイン酸共重合ワ
ックスなどの合成ワックスなどの中から選ばれた１種ま
たは２種以上の混合物が使用できる。The waxy substance includes natural waxes such as wood wax, beeswax, lanolin, carnauba wax, candelilla wax and montan wax; petroleum waxes such as paraffin wax and microcrystalline wax; oxidized wax, ester wax and low molecular weight polyethylene One or a mixture of two or more selected from synthetic waxes such as α-olefin-maleic anhydride copolymer waxes can be used.
【００１２】これらワックス単体または混合物は融点が
５０〜１２０℃のものが好ましい。紫外線で赤色、緑色
および青色に発光する白色系無機蛍光インクのみで頭部
像や人物像を印像することにより、可視光線下では単に
白色の印像であるが、紫外線照射により頭部像や人物像
を浮かび上がらせることができる。本発明では一般イン
キ（紫外線の照射により色の変化がないインキ。）のイ
エロー、マゼンタ、シアンおよびブラックにより印刷さ
れた頭部像や人物像と、紫外線で赤色、緑色および青色
に発光する３種類の白色系無機蛍光インクにより印刷さ
れた頭部や人物の印像を重ね合わせたり、または少しず
らした位置に印像を形成し、あるいは全く別の位置に形
成しても良い。These waxes alone or in mixtures preferably have a melting point of 50 to 120 ° C. By printing a head image or a human image only with a white inorganic fluorescent ink that emits red, green and blue light with ultraviolet light, it is simply a white image under visible light, but the head image and A person image can be raised. In the present invention, a head image and a human image printed with yellow, magenta, cyan, and black of general inks (inks that do not change color upon irradiation with ultraviolet light), and three types that emit red, green, and blue light with ultraviolet light. The printed images of the head or person printed with the white inorganic fluorescent ink may be superimposed, or the printed images may be formed at slightly shifted positions, or may be formed at completely different positions.
【００１３】前記イエロー・マゼンタ・シアンインクに
紫外線で赤色、緑色および青色に発光する白色系無機蛍
光体を混ぜ合わせても、該インクの色はほとんど変化し
ないことから、該インクを用いて頭部像や人物像を印刷
すると、可視光線下ではイエロー・マゼンタ・シアンイ
ンクによるカラーの印像が見え、紫外線を照射すると僅
かに蛍光を発するカラー印像を浮かび上がらせることが
できる。[0013] Even if the yellow, magenta, and cyan inks are mixed with a white inorganic phosphor that emits red, green, and blue light by ultraviolet light, the color of the ink hardly changes. When an image or a person image is printed, a color image formed by yellow, magenta, and cyan ink can be seen under visible light, and a color image that slightly emits fluorescence when irradiated with ultraviolet light can be made to emerge.
【００１４】熱転写印刷を印像の手段として用いること
により、個々人に対して個別の模様や人物像や頭部像を
デジタルデータで容易に印刷することができる。紫外線
の照射により赤色、緑色および青色に発光する３種類の
蛍光インクリボンを用いると、可視光線下では視認が困
難な印像、あるいは不可視の印像となり、紫外線照射に
より綺麗なフルカラー印像を形成することができる。By using thermal transfer printing as a means of printing, individual patterns, personal images and head images can be easily printed on individual persons in digital data. Using three types of fluorescent ink ribbons that emit red, green, and blue light when irradiated with ultraviolet light, makes visible images invisible or invisible under visible light, and forms a beautiful full-color image when irradiated with ultraviolet light. can do.
【００１５】前記蛍光体印刷物をパスポート、免許証、
社員証、クレジットカードなどに使用することによっ
て、偽造防止に有効な一手段となる。また、セキュリテ
ィ分野はもちろんのこと、アミューズメントなどの一般
分野にも利用できることは自明である。[0015] A passport, a license,
It is an effective means of preventing counterfeiting by using it for employee ID cards and credit cards. It is obvious that the present invention can be used not only in the security field but also in general fields such as amusement.
【００１６】[0016]
【発明の実施の形態】以下に、本発明の実施例について
説明する。 （実施例１）厚みが４．５μｍのＰＥＴ（ポリエチレン
テレフタレート）などのフィルム状基材の一方の面にス
ティッキング防止層を０．１ｇ／ｍ2塗布し、他方の面
に離型層を０．５ｇ／ｍ2と、前記離型層の表面に蛍光
インク層を塗布しインクリボンを作製した。Embodiments of the present invention will be described below. (Example 1) An anti-sticking layer is applied at 0.1 g / m 2 on one surface of a film-like base material such as PET (polyethylene terephthalate) having a thickness of 4.5 μm, and a release layer is formed on the other surface at 0.1 g / m 2 . At 5 g / m 2 , a fluorescent ink layer was applied to the surface of the release layer to prepare an ink ribbon.
【００１７】ここで蛍光インク中の白色系無機蛍光体は
根本特殊化学製の特殊発光体ＹＳ−Ｆ（蛍光赤色 ｘ＝
０．６１、ｙ＝０．３１）、ＨＧ−Ｆ（蛍光緑色 ｘ＝
０．２９、ｙ＝０．５９）、ＳＰＥ−Ｆ（蛍光青色 ｘ
＝０．１５、ｙ＝０．０５）を用いた。＜ｘ，ｙは紫外
線照射時の蛍光色をＸＹＺ表色系で表示。以下、同じ。
＞ 蛍光インクは溶剤を除いた乾燥インク組成で、白色系無
機蛍光体 ３０重量％、エチレン−酢酸ビニル共重合体
５８重量％、ダイヤカルナ３０Ｋ １２重量％からな
り、蛍光強度を調整するため蛍光赤・緑・青インクはそ
れぞれ３．０ｇ／ｍ2、３．９ｇ／ｍ2と４．９ｇ／ｍ2
の塗布量とした。Here, the white inorganic phosphor in the fluorescent ink is a special luminous body YS-F (fluorescent red x =
0.61, y = 0.31), HG-F (fluorescent green x =
0.29, y = 0.59), SPE-F (fluorescent blue x
= 0.15, y = 0.05). <X, y indicate the fluorescent color at the time of ultraviolet irradiation in the XYZ color system. same as below.
The fluorescent ink is a dry ink composition excluding the solvent, and is composed of 30% by weight of a white inorganic fluorescent substance, 58% by weight of an ethylene-vinyl acetate copolymer, and 12% by weight of Diamond Carna 30K. • each green, and blue ink is 3.0g / m 2, 3.9g / m 2 and 4.9g / m 2
Was applied.
【００１８】顔料坪量はそれぞれ０．９０ｇ／ｍ2、
１．１７ｇ／ｍ2、１．４７ｇ／ｍ2となる。このリボン
を用いてアルプス電気（株）製のマイクロドライプリン
タで上質紙および白ＰＥＴに頭部印像を形成し、名刺サ
イズにカッティングした。図１に可視光線下の蛍光印像
を示す。頭部印像１は肉眼では上質紙または白ＰＥＴで
できた基材２と同じ白色をしているため、どこに印像が
描画されているのか区別するのが困難であった。図の点
線は頭部印像部を示している。図２に紫外線照射時の印
像を示す。波長が主に４００ｎｍ以下であり３６５ｎｍ
あるいは２５３．７ｎｍにピークを持つ紫外線（以下単
に紫外線と呼ぶ）を放射する紫外線照射装置を用いて観
察したところ鮮明で、かつ色合いが良好な蛍光色の頭部
印像３が浮かび上がった。さらにルーペを用いて観察し
たところ、背景色などのインクの重なりがない点状の部
分は、それぞれの蛍光色（１次色）に、頭部印像のイン
クの重なりがある部分ではそれぞれの２次色または３次
色に蛍光を発していた。The pigment basis weight is 0.90 g / m 2 ,
1.17g / m 2, the 1.47g / m 2. Using this ribbon, a head image was formed on high-quality paper and white PET using a micro dry printer manufactured by Alps Electric Co., Ltd., and cut into business card sizes. FIG. 1 shows a fluorescent image under visible light. Since the head image 1 has the same white color as the base material 2 made of high-quality paper or white PET with the naked eye, it is difficult to distinguish where the image is drawn. The dotted line in the figure indicates the head image portion. FIG. 2 shows a printed image upon irradiation with ultraviolet rays. Wavelength is mainly 400 nm or less and 365 nm
Alternatively, when observed using an ultraviolet irradiation device that emits ultraviolet light having a peak at 253.7 nm (hereinafter, simply referred to as ultraviolet light), a clear and well-colored fluorescent head image 3 with a good hue emerged. Further observation using a loupe shows that a dot-like portion having no ink overlap such as a background color has two portions in each of the fluorescent colors (primary colors) and a portion where the ink of the head image overlaps. Fluorescence was emitted in the secondary or tertiary color.
【００１９】（実施例２）市販のマイクロドライ（以
下、ＭＤ略す）イエローインクリボンのインクを熱ヘラ
で回収し、該インク１００重量部に対し、実施例１の蛍
光緑色の白色系蛍光体を１０重量部添加したインクリボ
ンを作製した。該リボンとＭＤマゼンタ・シアンリボン
とを用いてカラー印像を形成した。該印像と、全て市販
のＭＤカラーインクリボンで同一印像を形成して比較し
たところ、いずれの印刷物も肉眼ではほとんど差異はな
いが、紫外線を照射すると白色系無機蛍光体を添加した
印像の方のみ、僅かに蛍光を発しており、差異を表現で
きた。(Example 2) The ink of a commercially available micro dry (hereinafter abbreviated as MD) yellow ink ribbon was recovered with a hot spatula, and the fluorescent green white phosphor of Example 1 was added to 100 parts by weight of the ink. An ink ribbon to which 10 parts by weight was added was prepared. A color image was formed using the ribbon and the MD magenta / cyan ribbon. When the same image was formed using the commercially available MD color ink ribbon and the same image was formed, there was almost no difference between the printed images and the printed images. Only the one slightly emitted fluorescence, and the difference was able to be expressed.
【００２０】（実施例３）白色系無機蛍光体として、根
本特殊化学（株）製の特殊発光体ＹＳ―Ｆ（蛍光赤色
ｘ＝０．５９，ｙ＝０．３０）、ＡＬＮ−ＧＰＦ（蛍光
緑色 ｘ＝０．１５，ｙ＝０．６８）、ＳＰＥ―Ｆ（蛍
光青色 ｘ＝０．１５、ｙ＝０．０５）を用いた。蛍光
強度を調整するため蛍光緑色インクの塗布量のみ１．６
ｇ／ｍ2（顔料坪量０．４８ｇ／ｍ2）として、その他処
方・条件は実施例１と同様とした。Example 3 As a white inorganic phosphor, a special luminous body YS-F (fluorescent red) manufactured by Nemoto Special Chemical Co., Ltd. was used.
x = 0.59, y = 0.30), ALN-GPF (fluorescent green x = 0.15, y = 0.68), SPE-F (fluorescent blue x = 0.15, y = 0.05) Was used. To adjust the fluorescence intensity, only the applied amount of the fluorescent green ink is 1.6.
As g / m 2 (Pigment basis weight 0.48g / m 2), and other prescription and conditions were the same as in Example 1.
【００２１】図３に可視光線下での印像を、図４に紫外
線照射時の印像を示す。得られた頭部印像１は肉眼では
上質紙または白ＰＥＴでできた基材２と同じ白色をして
いるため、どこに印像が描画されているのか区別するの
が困難であった。図の点線は頭部印像位置を示す。しか
し、紫外線を照射したところ鮮明で、かつ色合いが良好
な印像が得られた。続いて、該印像より少しずらした位
置に市販のＭＤカラーインクリボンで同じ頭部印像４を
形成させた。これを名刺サイズにカッティングし、可視
光線下と紫外線照射下で観察したところ、可視光線下で
は一般インクのカラーの頭部印像４が、紫外線照射下で
は蛍光カラーの頭部印像３が浮かび上がった。FIG. 3 shows a printed image under visible light, and FIG. 4 shows a printed image upon irradiation with ultraviolet rays. Since the obtained head image 1 has the same white color as the base material 2 made of high-quality paper or white PET with the naked eye, it is difficult to distinguish where the image is drawn. The dotted line in the figure indicates the head image position. However, upon irradiation with ultraviolet light, a clear and well-colored image was obtained. Subsequently, the same head image 4 was formed with a commercially available MD color ink ribbon at a position slightly shifted from the image. This was cut into a business card size and observed under visible light and ultraviolet irradiation. Under visible light, a head image 4 of a general ink color emerged, and under ultraviolet irradiation, a fluorescent color head image 3 emerged. Went up.
【００２２】（比較例１）白色系無機蛍光体としてグロ
ーバック社インビジブルシリーズＢｌｕｅ Ｒ（蛍光青
色 ｘ＝０．２２，ｙ＝０．２５）を用い、その他の条
件は実施例１と同様とした。蛍光赤色・緑色のｘ，ｙの
値は本発明の範囲内であるが、蛍光青色のｘ，ｙの値は
本発明の範囲外であった。Comparative Example 1 Invisible Series Blue R (Fluorescent blue x = 0.22, y = 0.25) was used as a white inorganic phosphor, and other conditions were the same as in Example 1. . The values of x and y for the fluorescent red and green were within the range of the present invention, but the values of x and y for the fluorescent blue were outside the range of the present invention.
【００２３】得られた印像を観察したところ２次色はシ
アンのはずが薄緑色に、マゼンタのはずがピンクがかっ
た色を呈していた。３次色は白色のはずが黄色味がかっ
た色を呈した。印像全体も黄色味がかり、良好な蛍光カ
ラー印像を得ることができなかった。この問題は塗布量
を調整しても解決することができなかった。Observation of the obtained image showed that the secondary color was light green, which should be cyan, and pinkish, which should have been magenta. The tertiary color should have been white but yellowish. The entire image was also yellowish, and a good fluorescent color image could not be obtained. This problem could not be solved by adjusting the coating amount.
【００２４】（比較例２）三井東圧化学（株）製色素
（蛍光染料）であるＥＲ−１０７（赤）、ＥＧ−３０２
（緑）、ＥＢ−５０１（青）を用い、特開平７−１２５
４０３の表１記載のインク処方でホットメルトインクを
作製した。該インクに紫外線を照射し、その蛍光色を測
色したところ、それぞれ（蛍光赤色 ｘ＝０．６５、ｙ
＝０．３２）、（蛍光緑色 ｘ＝０．１２、ｙ＝０．６
８）、（蛍光青色 ｘ＝０．１７、ｙ＝０．０３）で色
度は本発明の範囲内であった。Comparative Example 2 Pigments (fluorescent dyes) ER-107 (red) and EG-302 manufactured by Mitsui Toatsu Chemicals, Inc.
(Green) and EB-501 (blue).
A hot melt ink was prepared according to the ink formulation shown in Table 1 of Table 403. The ink was irradiated with ultraviolet light, and the fluorescent color thereof was measured. As a result, (fluorescent red x = 0.65, y
= 0.32), (fluorescent green x = 0.12, y = 0.6
8), (fluorescent blue x = 0.17, y = 0.03), and the chromaticity was within the range of the present invention.
【００２５】前記インクをホットメルトコータでインク
リボン化し、カラー熱転写プリンタでフルカラー印刷を
行った。得られた印像は比較的良好であった。しかし、
ウエザーメータで耐光性を調べたところ、該印像（蛍光
染料；有機系）は約１ヶ月相当の保証しか得られなかっ
た。一方、実施例１〜３の印刷物の蛍光印像（蛍光顔
料；無機系）は同テストで１２ヶ月以上の保証が得られ
た。The ink was converted into an ink ribbon using a hot melt coater, and full color printing was performed using a color thermal transfer printer. The obtained image was relatively good. But,
When the light fastness was examined with a weather meter, the printed image (fluorescent dye; organic system) could only be guaranteed for about one month. On the other hand, the fluorescent images (fluorescent pigments; inorganic type) of the printed materials of Examples 1 to 3 were guaranteed for 12 months or more in the same test.
【００２６】[0026]
【発明の効果】以上説明したように、本発明によれば、
紫外線で発光する無機蛍光体を用いて、人物や頭部の印
像を個々人が所有するカードや証明書に個別に設けるの
で、偽造が困難になる。無機蛍光体の外観が白色系のも
のを用いることにより、可視光線下では白色の隠し模様
とすることができる。また、蛍光体として無機タイプを
使用するので、印像は耐光性に優れている。さらに、印
像形成手段として熱転写印刷を利用することにより、個
々人で個別の印像を容易に形成できる。As described above, according to the present invention,
Since an image of a person or a head is individually provided on a card or certificate owned by an individual using an inorganic phosphor that emits ultraviolet light, forgery becomes difficult. By using an inorganic phosphor having a white appearance, a white hidden pattern can be obtained under visible light. Further, since the inorganic type is used as the phosphor, the printed image is excellent in light resistance. Furthermore, by utilizing thermal transfer printing as the image forming means, individual images can be easily formed by individuals.
【図１】本発明の可視光線下の蛍光印像を示す図であるFIG. 1 is a diagram showing a fluorescent image under visible light of the present invention.
【図２】本発明の紫外線照射時の印像を示す図であるFIG. 2 is a view showing a printed image at the time of irradiation with ultraviolet light according to the present invention.
【図３】本発明の可視光線下の印像を示す図であるFIG. 3 is a view showing an image under visible light of the present invention.
【図４】本発明の紫外線照射時の印像を示す図であるFIG. 4 is a diagram showing a stamp image when irradiating ultraviolet rays according to the present invention.
【符号の簡単な説明】 １ 頭部印像（蛍光潜像） ２ 基材 ３ 頭部印像（蛍光印像） ４ 頭部印像（カラー印像）[Brief Description of Codes] 1 Head image (fluorescent latent image) 2 Base material 3 Head image (fluorescent image) 4 Head image (color image)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 買手 良一 大阪府大阪市西淀川区御幣島五丁目４番14 号 フジコピアン内 (72)発明者 黒川 健治 大阪府大阪市西淀川区御幣島五丁目４番14 号 フジコピアン内 (72)発明者 島崎 良一 大阪府大阪市西淀川区御幣島五丁目４番14 号 フジコピアン内 Ｆターム(参考） 2H111 AA01 AA05 AA07 AA26 BA32 BA33 BA38 BA74 2H113 AA06 BA22 BB02 BB22 BC00 BC09 CA32 DA43 DA57 EA01 EA16 FA43 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryoichi Inventor, Buyer Ryoichi 5-4-1-14 Mitejima, Nishiyodogawa-ku, Osaka-shi, Osaka (72) Kenji Kurokawa 5-4-1-14 Mitejima, Nishiyodogawa-ku, Osaka, Osaka Fujicopian (72) Ryoichi Shimazaki, Inventor F-term in Fujikopian 5-4-1-14 Moundoshima, Nishiyodogawa-ku, Osaka-shi, Osaka 2H111 AA01 AA05 AA07 AA26 BA32 BA33 BA38 BA74 2H113 AA06 BA22 BB02 BB22 BC00 BC09 CA32 DA43 DA57 FA43
Claims (5)
印像を印刷してなる蛍光体印刷物において、該印像が紫
外線を照射した時の色が赤・緑・青の３色からなる蛍光
インクの点の集合体と少なくとも２色以上の重ね合わせ
とのうちいづれかあるいは両方からなり、それぞれのイ
ンクには紫外線を照射した時の色度特性が異なる無機蛍
光体を用いた印刷物としたことを特徴とする蛍光体印刷
物。1. A fluorescent printed matter obtained by printing an image such as a pattern or an image that emits fluorescent light, wherein the color of the fluorescent image is three colors of red, green, and blue when the image is irradiated with ultraviolet rays. It is characterized in that the printed matter is made of one or both of a group of dots and a superposition of at least two colors, and each ink uses inorganic phosphors having different chromaticity characteristics when irradiated with ultraviolet rays. Phosphor printed matter.
蛍光インク中に含まれる蛍光体は白色系無機蛍光体であ
り、主に波長が４００ｎｍ以下で３６０から３７０ｎｍ
あるいは２５０ｎｍから２６０ｎｍにピーク値を持つ紫
外線を照射したときのそれぞれの蛍光色がＸＹＺ表色系
において、 赤色蛍光体はｘが０．５５〜０．７０、ｙが０．２５〜
０．３５ 緑色蛍光体はｘが０．０５〜０．３５、ｙが０．５０〜
０．７５ 青色蛍光体はｘが０．１０〜０．２０、ｙが０．０１〜
０．２３ なる色度特性を有しており、前記赤・緑・青の蛍光インク
を用いて蛍光カラー印像を形成したことを特徴とする請
求項１記載の蛍光体印刷物。2. The phosphor contained in the red, green, and blue fluorescent inks when irradiated with ultraviolet light is a white inorganic phosphor, mainly having a wavelength of 400 nm or less and 360 to 370 nm.
Alternatively, when each of the fluorescent colors when irradiated with ultraviolet light having a peak value from 250 nm to 260 nm is in the XYZ color system, x is 0.55 to 0.70 and y is 0.25 to
0.35 Green phosphor has x of 0.05 to 0.35 and y of 0.50 to 0.55.
0.75 In the blue phosphor, x is 0.10 to 0.20, and y is 0.01 to
The phosphor printed matter according to claim 1, having a chromaticity characteristic of 0.23, and forming a fluorescent color image using the red, green, and blue fluorescent inks.
せた有色蛍光インクを用いて蛍光カラー印像を形成した
ことを特徴とする蛍光体印刷物。3. A phosphor print, wherein a fluorescent color image is formed using a colored fluorescent ink containing a white inorganic phosphor and a coloring pigment.
とを特徴とする請求項１、２又は３記載の蛍光体印刷
物。4. The phosphor printed matter according to claim 1, wherein the printing means uses thermal transfer printing.
０ｇ／ｍ2の蛍光インクリボンを用いて熱転写印刷した
ことを特徴とする請求項１、２、３又は４記載の蛍光体
印刷物。5. The phosphor has a pigment basis weight of 0.4 g / m 2 to 1
5. The phosphor printed matter according to claim 1, wherein thermal transfer printing is performed using a fluorescent ink ribbon of 0 g / m < 2 >.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10328209A JP2000141863A (en) | 1998-11-18 | 1998-11-18 | Fluorescent material printed matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10328209A JP2000141863A (en) | 1998-11-18 | 1998-11-18 | Fluorescent material printed matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000141863A true JP2000141863A (en) | 2000-05-23 |
Family
ID=18207679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10328209A Pending JP2000141863A (en) | 1998-11-18 | 1998-11-18 | Fluorescent material printed matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000141863A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000158823A (en) * | 1998-11-30 | 2000-06-13 | Fujicopian Co Ltd | Thermal transfer recording medium |
| WO2003080361A1 (en) | 2002-03-21 | 2003-10-02 | Imperial Chemical Industries Plc | Improvements in or relating to thermal transfer printing |
| KR100433680B1 (en) * | 2000-12-13 | 2004-05-31 | 한국조폐공사 | Security sheet including a transparent thin film having fluorescence color fiber and method for preparing the same |
| JP2008513235A (en) * | 2004-09-14 | 2008-05-01 | エーステライヒシェ バンクノーテン− ウント ズィヒャーハイツドルック ゲゼルシャフト ミット ベシュレンクテル ハフツング | Counterfeiting measures for valuable documents, especially banknotes |
| WO2011018982A1 (en) | 2009-08-13 | 2011-02-17 | 凸版印刷株式会社 | Image-displaying body and labeled article |
| WO2011045972A1 (en) | 2009-10-16 | 2011-04-21 | 凸版印刷株式会社 | Image displaying medium, labeled article, and method of manufacture thereof |
| WO2013161783A1 (en) | 2012-04-25 | 2013-10-31 | 凸版印刷株式会社 | Hologram transcription foil, method for producing image display element, image display element, and personal authentication medium |
| WO2014007234A1 (en) * | 2012-07-02 | 2014-01-09 | 大日本印刷株式会社 | Personal information display element |
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1998
- 1998-11-18 JP JP10328209A patent/JP2000141863A/en active Pending
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| US9557710B2 (en) | 2012-04-25 | 2017-01-31 | Toppan Printing Co., Ltd. | Hologram transfer foil, fabrication method of image display element, image display element, and personal authentication medium |
| WO2013161783A1 (en) | 2012-04-25 | 2013-10-31 | 凸版印刷株式会社 | Hologram transcription foil, method for producing image display element, image display element, and personal authentication medium |
| JP2014008746A (en) * | 2012-07-02 | 2014-01-20 | Dainippon Printing Co Ltd | Personal information display |
| WO2014007234A1 (en) * | 2012-07-02 | 2014-01-09 | 大日本印刷株式会社 | Personal information display element |
| JP2014013326A (en) * | 2012-07-04 | 2014-01-23 | Dainippon Printing Co Ltd | Personal information display |
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