JP2003276299A - Latent image forming method due to double tone printing and printed matter - Google Patents
Latent image forming method due to double tone printing and printed matterInfo
- Publication number
- JP2003276299A JP2003276299A JP2002087814A JP2002087814A JP2003276299A JP 2003276299 A JP2003276299 A JP 2003276299A JP 2002087814 A JP2002087814 A JP 2002087814A JP 2002087814 A JP2002087814 A JP 2002087814A JP 2003276299 A JP2003276299 A JP 2003276299A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- color
- gradation
- latent image
- image portion
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、銀行券、株券、有
価証券、通行券、パスポート、商品券、カード等の偽
造、複写を防止する必要性のある貴重印刷物に適用され
るダブルトーン印刷による潜像作成方法及びその印刷物
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is based on duotone printing applied to a valuable printed matter which is necessary to prevent forgery and copying of banknotes, stock certificates, securities, passports, gift certificates, cards and the like. The present invention relates to a latent image forming method and a printed matter thereof.
【０００２】[0002]
【従来の技術】ダブルトーンとは、同一の原図からスク
リーン角度を変えて２枚の網ネガを撮影し、それから２
枚の網凸版を作る２色網版。主要色（通常墨刷り）で刷
る版はスクリーン角度４５度で、コントラストの強い版
に仕上げ、他の１版はこれと角度を変えて軟調に仕上
げ、淡色で刷り重ねると、２色効果のグラデーションの
豊かな印刷ができる。また、１枚の網ネガから硬軟２種
の網凸版を作り、濃淡２種のインキでモアレの生じない
ように刷り重ねて作ったダブルトーンをデュオタイプと
いう（印刷辞典 日本印刷学会編）。また、補色同士の
色をカラーマッチングを行う分色方法は、商業広告等の
印刷で利用されている。2. Description of the Related Art Duotone is a method in which two screen negatives are photographed by changing the screen angle from the same original drawing, and then 2
A two-color halftone plate that makes a halftone plate. Plates printed with major colors (usually black ink) have a screen angle of 45 degrees and have a high contrast, while the other plate has a different tone and a softer finish. You can print richly. In addition, duotone is a duotype created by making two kinds of hard and soft halftone letterpress from one halftone negative and printing them with two shades of ink so that moire does not occur (printing dictionary edited by the Printing Society of Japan). Further, a color separation method for performing color matching between complementary colors is used in printing commercial advertisements and the like.
【０００３】一方、銀行券、株券、有価証券、通行券、
商品券、カード等の貴重印刷物は、その性質上、偽造や
改竄されないことが要求される。この防止策として、紫
外線を照射時に可視光で発光する蛍光インキや、赤外線
を吸収する材料を含有した赤外線吸収インキを用いるこ
とで、通常、可視光下では上記インキで印刷した領域は
視認できず、紫外線や赤外線を照射することにより上記
インキで印刷した領域が顕在化する技術が利用されてい
る。On the other hand, banknotes, stock certificates, securities, pass tickets,
Due to the nature of valuable printed materials such as gift certificates and cards, it is required that they are not forged or tampered with. As a preventive measure, by using a fluorescent ink that emits visible light when irradiated with ultraviolet rays, or an infrared absorbing ink containing a material that absorbs infrared rays, the area printed with the above ink cannot be visually recognized under visible light. A technique is used in which the area printed with the ink is exposed by irradiating ultraviolet rays or infrared rays.
【０００４】赤外線吸収インキを用いた偽造防止策とし
て、赤外線センサにより検出され得る印刷の施された印
刷物であり、前記印刷物には赤外吸収特性の異なるイン
キによって印刷された印刷領域が形成されていることを
特徴とした赤外吸収印刷物が開示されている。また、印
刷領域が赤外吸収特性を有する印刷インキにより印刷さ
れた第１の印刷領域と、一般の印刷インキにより印刷さ
れた第２の印刷領域とから構成され、第１の印刷領域と
第２の印刷領域の色調とが視覚的に判別困難である印刷
物であり、第１の印刷領域の印刷インキが赤外吸収顔料
を含有する印刷インキで印刷し、赤外線の反射により第
１の印刷領域が顕像化することを特徴とした赤外吸収印
刷物が開示されている（特開昭６３−３０７９９６号公
報参照）。As a forgery prevention measure using an infrared absorbing ink, a printed matter is printed which can be detected by an infrared sensor, and the printed area is formed with inks having different infrared absorbing characteristics. There is disclosed an infrared absorption printed matter characterized by the above. In addition, the print area includes a first print area printed with a printing ink having an infrared absorption characteristic and a second print area printed with a general printing ink. Is a printed matter whose color tone of the print area is difficult to visually distinguish, and the print ink of the first print area is printed with the print ink containing an infrared absorbing pigment, and the first print area is changed by infrared reflection. An infrared absorbing printed material characterized by making it visible has been disclosed (see JP-A-63-307996).
【０００５】紫外線を照射して可視光で発光する蛍光イ
ンキを用いた偽造防止策として、可視光線以外の励起光
を照射したときに可視光線を発光する１種または２種以
上の蛍光インキが印刷されており、励起光を照射したと
きに蛍光インキの発光によって肉眼で視認し得る画像が
形成される印刷物であって、画像が形成される領域には
蛍光インキが印刷されていない部分が設けられており、
励起光を照射したときに該部分が黒色に見えることを特
徴とする蛍光印刷物が開示されている（特開平１０−２
８７０３４号公報参照）。As a forgery prevention measure using a fluorescent ink that emits visible light when irradiated with ultraviolet rays, one or more fluorescent inks that emit visible light when printed with excitation light other than visible light are printed. It is a printed matter on which a visible image is formed by the emission of fluorescent ink when irradiated with excitation light, and a portion where the fluorescent ink is not printed is provided in the area where the image is formed. And
Disclosed is a fluorescent printed material in which the portion appears black when irradiated with excitation light (Japanese Patent Laid-Open No. 10-2.
87034).
【０００６】紫外線を照射して可視光で発光する無色蛍
光インキを用いた偽造防止策として、カード面に無色蛍
光インキで顔写真等の階調画像が印刷されていることを
特徴とする無色蛍光画像入りカードが開示されている
（実公平０７−５３９８７号公報参照）。As a forgery prevention measure using a colorless fluorescent ink which emits visible light when irradiated with ultraviolet rays, a colorless fluorescent ink is characterized in that a gradation image such as a face photograph is printed on the card surface with the colorless fluorescent ink. An image-containing card is disclosed (see Japanese Utility Model Publication No. 07-53987).
【０００７】更に、紫外線及び赤外線を照射することに
よりパターンが顕在化する偽造防止策として、紫外光の
照射により励起されて可視光を発光する第一蛍光体と赤
外光の照射により励起されて照射した上記赤外光とは波
長の異なる赤外光を発する第二蛍光体を含有する情報パ
ターンが、基材上に設けられていることを特徴とする情
報担持シートが開示されている（特開平０９−５２４７
９号公報参照）。[0007] Furthermore, as a counterfeit prevention measure in which the pattern becomes visible by irradiating with ultraviolet rays and infrared rays, the first phosphor which is excited by irradiation of ultraviolet light and emits visible light and the irradiation of infrared light are excited. An information carrying sheet is disclosed in which an information pattern containing a second phosphor that emits infrared light having a wavelength different from that of the irradiated infrared light is provided on a substrate (special feature. Kaihei 09-5247
No. 9).
【０００８】更に、本出願人は連続階調画像を表現する
ための網点を印刷する際に、前記網点を印刷するための
ハーフトーン領域としてｍ×ｍピクセル（ｍ≧２、ｍは
整数）のハーフトーン領域とｎ×ｎピクセル（１≦ｎ＜
ｍ、ｎは整数）のハーフトーン領域の２種類のハーフト
ーン領域を設け、前記２種類のハーフトーン領域を互い
に重なることなく配置するとともに、互いに独立した領
域にある４つの前記ｍ×ｍピクセルのハーフトーン領域
が１つの前記ｎ×ｎピクセルのハーフトーン領域の周囲
を隙間なく囲繞し、互いに独立した領域にある４つの前
記ｎ×ｎピクセルのハーフトーン領域が１つの前記ｍ×
ｍピクセルのハーフトーン領域の外周に沿って等間隔に
配置されるように前記２種類のハーフトーン領域を構成
した上で、前記２種類のハーフトーン領域の双方の種類
のハーフトーン領域を用いて前記網点が印刷されている
ことを特徴とする網点印刷物及びその印刷方法を出願し
ている（特開２００１−２０５９１７号公報参照）。Further, the applicant of the present invention, when printing a halftone dot for expressing a continuous tone image, has m × m pixels (m ≧ 2, m is an integer) as a halftone area for printing the halftone dot. ) Halftone region and n × n pixels (1 ≦ n <
(m and n are integers), two types of halftone regions are provided, the two types of halftone regions are arranged so as not to overlap with each other, and the four types of m × m pixels in independent regions are arranged. A halftone region surrounds one of the n × n pixel halftone regions without any gap, and four n × n pixel halftone regions that are independent of each other form one m ×
After configuring the two types of halftone regions so as to be arranged at equal intervals along the outer periphery of the m-pixel halftone region, using both types of halftone regions of the two types of halftone regions. A patent application has been filed for a halftone dot printed matter and a printing method thereof, which are printed with the halftone dots (see Japanese Patent Laid-Open No. 2001-205917).
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、特開昭
６３−３０７９９６号公報、特開平１０−２８７０３４
号公報、実公平０７−５３９８７号公報のように潜像画
像を印刷物に埋め込む場合、赤外線又は紫外線での潜像
画像の版面を作成、背景画像部の版面を作成する必要が
あった。基本画像内に赤外線及び紫外線でそれぞれ潜像
画像を埋め込むには、最低、印刷版面を３版作成する必
要があり、潜像画像を有しない通常の同じインキの数を
用いた印刷物と比較し、再現可能な色が少なくなるとい
う問題があった。潜像画像を有しない通常の印刷物と同
様の色再現を有する印刷物を作成するには、最低、４版
以上の版面を作成する必要があり、印刷工程、材料コス
トが増加する問題があった。また、特開平０９−５２４
７９号公報は、特殊なインキを用いる必要があり、又シ
ート全体に赤外線吸材料を印刷しているため、材料コス
トが増加する問題があった。However, JP-A-63-307996 and JP-A-10-287034.
In the case of embedding a latent image in a printed matter as in Japanese Laid-Open Patent Publication No. 07-53987, it is necessary to create a printing plate of the latent image with infrared rays or ultraviolet rays and a printing plate of the background image portion. In order to embed each latent image with infrared rays and ultraviolet rays in the basic image, it is necessary to make at least three printing plate surfaces. Compared with a normal printed matter using the same number of inks without latent image, There was a problem that the number of reproducible colors decreased. In order to produce a printed matter having the same color reproduction as a normal printed matter having no latent image, it is necessary to produce at least four or more printing plates, which causes a problem of increase in printing process and material cost. Also, Japanese Patent Laid-Open No. 09-524
In Japanese Patent No. 79, it is necessary to use a special ink, and since the infrared absorbing material is printed on the entire sheet, there is a problem that the material cost increases.
【００１０】また、特開２００１−２０５９１７号公報
は、特殊な網点形状を用いる必要があった。Further, in Japanese Patent Laid-Open No. 2001-205917, it was necessary to use a special halftone dot shape.
【００１１】本発明は前述した問題点を解決することを
目的としたもので、特殊なインキを用いることなく、第
１の版面（潜像画像部及び背景画像部）を有彩色のイン
キを用いて印刷し、第２の版面（潜像画像部又は背景画
像部）を赤外線吸収材料を含む無彩色のインキを用いて
印刷し、第３の版面（潜像画像部又は背景画像部）を有
彩色のインキに対して補色関係の蛍光顔料を含有したイ
ンキで印刷することで、潜像画像部以外のデザインに階
調を有するカラー印刷を施すことが可能となり、できる
だけ少ない版数で、つまり、最低、３種類の版面と３色
のインキで多色再現性に優れる印刷物が得られることか
ら材料コスト及び印刷工程の低減が可能となり、特殊な
網点形状を利用する必要がないため刷り合わせが容易で
あり、通常可視光下では階調を有する基本画像が視認で
き、紫外線を照射して観察した場合に潜像画像部が視認
され、且つ、赤外線反射表示装置で観察した場合に、紫
外線を照射して観察した場合と同一の潜像画像部が視認
できる。以上のことから、本発明は赤外線又は紫外線を
照射することにより誰でも容易に真偽判別が可能となる
ダブルトーン印刷による潜像作成方法及びその印刷物を
提案する。The present invention is intended to solve the above-mentioned problems and uses a chromatic color ink for the first plate surface (latent image portion and background image portion) without using a special ink. Printed, the second plate (latent image part or background image part) is printed using an achromatic ink containing an infrared absorbing material, and the third plate (latent image part or background image part) is provided. By printing with an ink containing a fluorescent pigment having a complementary color relationship to the colored ink, it becomes possible to perform color printing with gradation in the design other than the latent image portion, that is, with as few plate numbers as possible, that is, At least, it is possible to reduce the material cost and the printing process because a printed matter with excellent multicolor reproducibility can be obtained with three types of printing plates and three color inks, and it is not necessary to use a special halftone dot shape for printing. Easy and usually visible light In, the basic image having gradation can be visually recognized, the latent image portion is visually recognized when irradiated with ultraviolet rays, and the same as when irradiated with ultraviolet rays when observed with an infrared reflective display device. The latent image portion of can be visually confirmed. From the above, the present invention proposes a latent-image forming method by double-tone printing and printed matter thereof by which anyone can easily make a true / false decision by irradiating infrared rays or ultraviolet rays.
【００１２】[0012]
【発明を解決しようとする手段】本発明は、階調を有す
る基本画像に少なくとも３色のインキを用い、前記基本
画像は、階調を有する背景画像部と少なくとも一つ以上
の潜像画像部が設けられ、通常可視光下では階調を有す
る基本画像が視認でき、紫外線を照射して観察した場合
に前記潜像画像部が暗く視認され、且つ、赤外線反射表
示装置で観察した場合に、前記紫外線を照射して観察し
た場合と同一の前記潜像画像部が赤外吸収部として視認
できる印刷物の潜像作成方法において、前記階調を有す
る基本画像に対して、任意の有彩色の第１のインキと赤
外線吸収材料を含有した無彩色の第２のインキのダブル
トーンでの色彩と、前記第１のインキと前記第１のイン
キとほぼ補色となるインキに紫外線を照射すると可視光
で発光する蛍光顔料を含有した第３のインキのダブルト
ーンでの色彩が、ほぼ等色となるように色分解したデー
タを作成する工程と、前記色分解したデータから前記第
１のインキと第２のインキのダブルトーンでの第１のイ
ンキ用の分色版と第２のインキ用の分色版、及び、前記
第１のインキと第３のインキのダブルトーンでの第１の
インキ用の分色版と第３のインキ用の分色版を作成する
工程と、前記第１のインキと第２のインキのダブルトー
ンでの第１のインキ用の分色版と第２のインキ用の分色
版に前記潜像画像部をマスキングし、前記第１のインキ
と第３のインキのダブルトーンでの第１のインキ用の分
色版と第３のインキ用の分色版に前記階調を有する背景
画像部をマスキングする工程と、前記潜像画像部をマス
キングした前記第１のインキと第２のインキのダブルト
ーンでの第１のインキ用の分色版と、前記階調を有する
背景画像部をマスキングした前記第１のインキと第３の
インキのダブルトーンでの第１のインキ用の分色版を重
ね合せる工程と、前記重ね合わせて得られた第１のイン
キ用の分色版と、前記潜像画像部をマスキングした第２
のインキ用の分色版及び前記階調を有する背景画像部を
マスキングした第３のインキ用の分色版から、第１のイ
ンキ用の版面、第２のインキ用の版面及び第３のインキ
用の版面を作成する工程と、前記第１のインキ用の版
面、第２のインキ用の版面及び第３のインキ用の版面を
用いて印刷する工程からなるダブルトーン印刷による潜
像作成方法である。According to the present invention, at least three color inks are used for a basic image having gradation, and the basic image has a background image part having gradation and at least one latent image part. Is provided, a basic image having a gradation can be visually recognized under normal visible light, the latent image portion is visually recognized dark when irradiated with ultraviolet rays, and, when observed with an infrared reflective display device, In the latent image forming method of the printed matter in which the latent image portion which is the same as that observed by irradiating the ultraviolet ray can be visually recognized as an infrared absorbing portion, the basic image having the gradation is compared with an arbitrary chromatic color first image. When the achromatic color of the first ink and the second ink of the achromatic color containing the infrared absorbing material is duotone, and the ink which is almost the complementary color of the first ink and the first ink is irradiated with ultraviolet rays, it becomes visible light. Luminous fluorescent face A step of creating data that is color-separated so that the color of the third ink containing doublet is almost the same color, and a double of the first ink and the second ink based on the color-separated data A color separation plate for the first ink and a color separation plate for the second ink in the tone, and a color separation plate for the first ink in the double tone of the first ink and the third ink A step of producing a color separation plate for a third ink, and a color separation plate for the first ink and a color separation plate for the second ink in the duotone of the first ink and the second ink. A background in which the latent image portion is masked, and the gradation is present in the color separation plate for the first ink and the color separation plate for the third ink in the duotone of the first ink and the third ink. A step of masking an image portion, the first ink and the second masking the latent image portion Color separation plate for the first ink in the double tone of the ink, and the color separation plate for the first ink in the double tone of the first ink and the third ink in which the background image portion having the gradation is masked. A step of superposing color plates, a color separation plate for the first ink obtained by the superposition, and a second masking portion of the latent image portion
From the color separation plate for the third ink and the color separation plate for the third ink masking the background image portion having the gradation, the plate surface for the first ink, the plate surface for the second ink, and the third ink A method for producing a latent image by double tone printing, which comprises a step of producing a printing plate surface for printing, and a step of printing using the printing plate surface for the first ink, the printing plate surface for the second ink and the printing plate surface for the third ink. is there.
【００１３】また、本発明は、階調を有する基本画像に
少なくとも３色のインキを用い、前記基本画像は、階調
を有する背景画像部と少なくとも一つ以上の潜像画像部
が設けられ、通常可視光下では前記階調を有する基本画
像が視認でき、紫外線を照射して観察した場合に前記潜
像画像部が可視光で発光して視認され、且つ、赤外線反
射表示装置で観察した場合に、前記紫外線を照射して観
察した場合と同一の前記潜像画像部が赤外線反射部とし
て視認できる印刷物の潜像作成方法において、任意の有
彩色の第１のインキと赤外線吸収材料を含有した無彩色
の第２のインキのダブルトーンでの色彩と、前記第１の
インキと前記第１のインキとほぼ補色となるインキに紫
外線を照射すると可視光で発光する蛍光顔料を含有した
第３のインキのダブルトーンでの色彩が、ほぼ等色とな
るように色分解したデータを作成する工程と、前記色分
解したデータから前記第１のインキと第２のインキのダ
ブルトーンでの第１のインキ用の分色版と第２のインキ
用の分色版、及び、前記第１のインキと第３のインキの
ダブルトーンでの第１のインキ用の分色版と第３のイン
キ用の分色版とを作成する工程と、前記第１のインキと
第２のインキのダブルトーンでの第１のインキ用の分色
版と第２のインキ用の分色版に前記階調を有する背景画
像部をマスキングし、前記第１のインキと第３のインキ
のダブルトーンでの第１のインキ用の分色版と第３のイ
ンキ用の分色版に前記潜像画像部をマスキングする工程
と、前記階調を有する背景画像部をマスキングした前記
第１のインキと第２のインキのダブルトーンでの第１の
インキ用の分色版と、前記潜像画像部をマスキングした
前記第１のインキと第３のインキのダブルトーンでの第
１のインキ用の分色版を重ね合せる工程と、前記重ね合
せて得られた第１のインキ用の分色版と、前記階調を有
する背景画像部をマスキングした第２のインキ用の分色
版及び前記潜像画像部をマスキングした第３のインキ用
の分色版から、第１のインキ用の版面、第２のインキ用
の版面及び第３のインキ用の版面を作成する工程と、前
記第１のインキ用の版面、第２のインキ用の版面及び第
３のインキ用の版面を用いて印刷する工程からなるダブ
ルトーン印刷による潜像作成方法である。Further, in the present invention, at least three color inks are used for a basic image having gradation, and the basic image is provided with a background image part having gradation and at least one latent image part. Normally, the basic image having the gradation can be visually recognized under visible light, and the latent image portion is visually recognized by emitting visible light when irradiated with ultraviolet rays and observed by an infrared reflective display device. In the method for producing a latent image of a printed matter in which the latent image portion which is the same as that observed by irradiating with the ultraviolet ray is visible as an infrared reflecting portion, the first ink of an arbitrary chromatic color and an infrared absorbing material are contained. A third tone containing a duotone color of the achromatic second ink and a fluorescent pigment which emits visible light when the first ink and the ink which is a substantially complementary color to the first ink are irradiated with ultraviolet rays. Ink A step of creating color-separated data so that the colors in the red tone are almost the same color; and a step for the first ink in the double tone of the first ink and the second ink from the color-separated data. Color separation plate and color separation plate for second ink, and color separation plate for first ink and color separation plate for third ink in duotone of said first ink and third ink And a background image portion having the gradation on the color separation plate for the first ink and the color separation plate for the second ink in the duotone of the first ink and the second ink. And masking the latent image portion with the color separation plate for the first ink and the color separation plate for the third ink with duotone of the first ink and the third ink, Dub of the first ink and the second ink masking the background image portion having the gradation A step of superimposing a color separation plate for the first ink in a tone and a color separation plate for the first ink in a double tone of the first ink and the third ink masking the latent image portion A color separation plate for the first ink obtained by the superposition, a color separation plate for the second ink masking the background image portion having the gradation, and a masking the latent image portion for the second ink A step of creating a plate surface for the first ink, a plate surface for the second ink and a plate surface for the third ink from the color separation plate for the ink of item 3, and the plate surface for the first ink, Is a method of forming a latent image by double tone printing, which comprises a step of printing using the plate surface for ink and the plate surface for third ink.
【００１４】また、本発明は、基材上に階調を有する基
本画像を設け、前記階調を有する基本画像は少なくとも
一つ以上の潜像画像部と階調を有する背景画像部が設け
られ、前記潜像画像部は任意の有彩色の第１のインキで
印刷する第１の版面と赤外線吸収材料を含有した無彩色
の第２のインキで印刷する第２の版面によって印刷さ
れ、前記階調を有する背景画像部は任意の有彩色の第１
のインキで印刷する第１の版面と前記第１のインキとほ
ぼ補色となるインキに紫外線を照射すると可視光で発光
する蛍光顔料を含有した第３のインキで印刷する第３の
版面によって印刷され、前記第１のインキと前記第２の
インキのダブルトーンでの色彩と、前記第１のインキと
前記第３のインキのダブルトーンでの色彩がほぼ等色で
あることを特徴とした印刷物であって、前記印刷物は通
常可視光下では階調を有する基本画像が視認でき、紫外
線を照射して観察した場合に前記潜像画像部が暗く視認
され、且つ、赤外線反射表示装置で観察した場合に、前
記紫外線を照射して観察した場合と同一の前記潜像画像
部が赤外吸収部として視認できることを特徴とした印刷
物である。Further, according to the present invention, a basic image having gradation is provided on a substrate, and the basic image having gradation has at least one latent image portion and a background image portion having gradation. The latent image portion is printed with a first plate surface printed with a first ink of an arbitrary chromatic color and a second plate surface printed with a second ink of an achromatic color containing an infrared absorbing material. The background image part having a tone is the first of any chromatic color.
Is printed by the third plate surface printed with the third ink containing the fluorescent pigment that emits visible light when the first plate surface printed with the ink and the ink almost complementary to the first ink are irradiated with ultraviolet rays. A printed matter characterized in that the duotone color of the first ink and the second ink and the duotone color of the first ink and the third ink are substantially the same color. In the printed matter, a basic image having gradation is usually visible under visible light, the latent image portion is visually recognized as dark when irradiated with ultraviolet rays, and when observed with an infrared reflective display device. In the printed matter, the latent image portion, which is the same as that observed by irradiating the ultraviolet ray, can be visually recognized as an infrared absorbing portion.
【００１５】また、本発明は、基材上に階調を有する基
本画像を設け、前記階調を有する基本画像は少なくとも
一つ以上の潜像画像部と階調を有する背景画像部が設け
られ、前記潜像画像部は任意の有彩色の第１のインキで
印刷する第１の版面と前記第１のインキとほぼ補色とな
るインキに紫外線を照射すると可視光で発光する蛍光顔
料を含有した第３のインキで印刷する第３の版面によっ
て印刷され、前記階調を有する背景画像部は任意の有彩
色の第１のインキで印刷する第１の版面と赤外線吸収材
料を含有した無彩色の第２のインキで印刷する第２の版
面によって印刷され、前記第１のインキと前記第２のイ
ンキのダブルトーンでの色彩と、前記第１のインキと前
記第３のインキのダブルトーンでの色彩がほぼ等色であ
ることを特徴とした印刷物であって、前記印刷物は通常
可視光下では前記階調を有する基本画像が視認でき、紫
外線を照射して観察した場合に前記潜像画像部が可視光
で発光して視認され、且つ、赤外線反射表示装置で観察
した場合に、前記紫外線を照射して観察した場合と同一
の前記潜像画像部が赤外線反射部として視認できること
を特徴とした印刷物である。According to the present invention, a basic image having gradation is provided on a substrate, and the basic image having gradation has at least one latent image portion and a background image portion having gradation. The latent image portion contains a first printing plate printed with a first ink of an arbitrary chromatic color and a fluorescent pigment that emits visible light when ultraviolet light is radiated to the ink that is a complementary color to the first ink. The background image portion printed by the third plate surface printed with the third ink and having the gradation has a first plate surface printed with the first ink of an arbitrary chromatic color and an achromatic color containing the infrared absorbing material. Printing with a second plate for printing with a second ink, the duotone color of the first ink and the second ink, and the duotone of the first ink and the third ink The color is almost the same color In the printed matter, the printed matter is usually visible under visible light the basic image having the gradation, the latent image portion is visually recognized by emitting visible light when irradiated with ultraviolet rays, and, The printed matter is characterized in that the same latent image portion as when observed by irradiating the ultraviolet ray can be visually recognized as an infrared reflection portion when observed with an infrared reflection display device.
【００１６】[0016]
【発明の実施の形態】図１に本発明の印刷物の作成工程
を示す。図１に示すように印刷する上で使用する任意の
有彩色の第１のインキ、赤外線吸収材料を含有した無彩
色の第２のインキ、第１のインキとほぼ補色となるイン
キに紫外線を照射すると可視光で発光する蛍光顔料を含
有した第３のインキから、ＳＴＥＰ１で第１のインキと
第２のインキのダブルトーンでのカラーチャートを作成
・測定し、第１のインキと第３のインキのダブルトーン
でのカラーチャートを作成・測定する。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a process for producing a printed matter of the present invention. Irradiation of ultraviolet rays to the first chromatic color first ink used for printing as shown in FIG. 1, the second achromatic color ink containing an infrared absorbing material, and the ink that is a color almost complementary to the first color ink. Then, in STEP 1, a double-tone color chart of the first ink and the second ink is prepared and measured from the third ink containing the fluorescent pigment that emits visible light, and the first ink and the third ink are measured. Create and measure a color chart with duotone of.
【００１７】ＳＴＥＰ２でＳＴＥＰ１で得られた第１の
インキと第２のインキのダブルトーンでのカラーチャー
トと、第１のインキと第３のインキのダブルトーンでの
カラーチャートとの色空間が重なる部分を決定する。In STEP2, the color spaces of the double tone color chart of the first ink and the second ink obtained in STEP1 and the color chart of the double tone of the first ink and the third ink overlap. Determine the part.
【００１８】用意された階調を有する基本画像にＳＴＥ
Ｐ３でＳＴＥＰ２で得られた第１のインキと第２のイン
キのダブルトーンでのカラーチャートと、第１のインキ
と第３のインキのダブルトーンでのカラーチャートとの
色彩がほぼ等色になるように正規化して色分解したデー
タを作成する。The STE is added to the basic image having the prepared gradation.
The colors of the double-tone color chart of the first ink and the second ink obtained in STEP2 in P3 and the color chart of the double-tone of the first ink and the third ink become almost the same color. Create data that is color-separated by normalization.
【００１９】ＳＴＥＰ４でＳＴＥＰ３で作成した色分解
したデータから第１のインキと第２のインキのダブルト
ーンでの第１のインキ用の分色版と第２のインキ用の分
色版、及び、第１のインキと第３のインキのダブルトー
ンでの第１のインキ用の分色版と第３のインキ用の分色
版を作成する。From the color-separated data prepared in STEP4 in STEP3, the color separation plate for the first ink and the color separation plate for the second ink in the double tone of the first ink and the second ink, and Create a color separation plate for the first ink and a color separation plate for the third ink in duotone of the first ink and the third ink.
【００２０】ＳＴＥＰ５で第１のインキと第２のインキ
のダブルトーンでの第１のインキ用の分色版と第２のイ
ンキ用の分色版に潜像画像部をマスキングし、第１のイ
ンキと第３のインキのダブルトーンでの第１のインキ用
の分色版と第３のインキ用の分色版に階調を有する背景
画像部をマスキングする。In STEP 5, the latent image portion is masked on the color separation plate for the first ink and the color separation plate for the second ink in the double tone of the first ink and the second ink, and the first image is masked. The background image portion having gradation is masked in the color separation plate for the first ink and the color separation plate for the third ink in duotone of the ink and the third ink.
【００２１】ＳＴＥＰ６で潜像画像部をマスキングした
第１のインキと第２のインキのダブルトーンでの第１の
インキ用の分色版と、階調を有する背景画像部をマスキ
ングした第１のインキと第３のインキのダブルトーンで
の第１のインキ用の分色版を重ね合せる。In STEP 6, the color separation plate for the first ink in the double tone of the first ink and the second ink masking the latent image portion and the first image masking the background image portion having gradation Overlay the color separation plates for the first ink in duotone of the ink and the third ink.
【００２２】ＳＴＥＰ７で重ね合せて得られた第１のイ
ンキ用の分色版と、潜像画像部をマスキングした第２の
インキ用の分色版及び階調を有する背景画像部をマスキ
ングした第３のインキの分色版から、第１のインキ用の
版面、第２のインキ用の版面及び第３のインキ用の版面
を作成する。The color separation plate for the first ink obtained by superimposing in STEP 7 and the color separation plate for the second ink masking the latent image portion and the background image portion having the gradation are masked. A plate surface for the first ink, a plate surface for the second ink, and a plate surface for the third ink are prepared from the color separation plates of the ink of No. 3.
【００２３】ＳＴＥＰ８で第１のインキ用の版面、第２
のインキ用の版面及び第３のインキ用の版面を用いて印
刷する。In STEP 8, the plate surface for the first ink, the second
Printing is performed using the plate surface for the ink and the plate surface for the third ink.
【００２４】ＳＴＥＰ５では、第１のインキと第２のイ
ンキのダブルトーンでの第１のインキ用の分色版と第２
のインキ用の分色版に潜像画像部をマスキングし、第１
のインキと第３のインキのダブルトーンでの第１のイン
キ用の分色版と第３のインキ用の分色版に階調を有する
背景画像部をマスキングしているが、ＳＴＥＰ５では、
第１のインキと第２のインキのダブルトーンでの第１の
インキ用の分色版と第２のインキ用の分色版に階調を有
する背景画像部をマスキングし、第１のインキと第３の
インキのダブルトーンでの第１のインキ用の分色版と第
３のインキ用の分色版に潜像画像部をマスキングしても
良い。In STEP 5, the color separation plate for the first ink in the duotone of the first ink and the second ink and the second ink
Mask the latent image area on the color separation plate for the ink of
The background image portion having gradation is masked in the color separation plate for the first ink and the color separation plate for the third ink in the double tone of the ink of No. 3 and the ink of No. 3, but in STEP 5,
The background image portion having gradation is masked on the color separation plate for the first ink and the color separation plate for the second ink in duotone of the first ink and the second ink, and The latent image portion may be masked on the color separation plate for the first ink and the color separation plate for the third ink in duotone of the third ink.
【００２５】ＳＴＥＰ１からＳＴＥＰ９により、基材上
に階調を有する基本画像を設けられ、階調を有する基本
画像は少なくとも一つ以上の潜像画像部と階調を有する
背景画像部が設けられ、潜像画像部は任意の有彩色の第
１のインキで印刷する第１の版面と赤外線吸収材料を含
有した無彩色の第２のインキで印刷する第２の版面によ
って印刷されて、階調を有する背景画像部は任意の有彩
色の第１のインキで印刷する第１の版面と前記第１のイ
ンキとほぼ補色となるインキに紫外線を照射すると可視
光で発光する蛍光顔料を含有した第３のインキで印刷す
る第３の版面によって印刷されて、第１のインキと第２
のインキのダブルトーンでの色彩と、第１のインキと第
３のインキのダブルトーンでの色彩がほぼ等色であるこ
とを特徴とする印刷物となる。By STEP 1 to STEP 9, a basic image having gradation is provided on the base material, and the basic image having gradation has at least one latent image portion and a background image portion having gradation. The latent image portion is printed with a first plate surface printed with a first ink of an arbitrary chromatic color and a second plate surface printed with a second ink of an achromatic color containing an infrared absorbing material, to obtain a gradation. The background image part has a first plate surface printed with a first ink of an arbitrary chromatic color and a third pigment containing a fluorescent pigment that emits visible light when ultraviolet light is radiated to the ink that is a substantially complementary color to the first ink. Printing with the third ink, printing with the first ink
The printed matter is characterized in that the duotone color of the above ink and the duotone colors of the first ink and the third ink are substantially equal.
【００２６】この印刷物は通常可視光下では階調を有す
る基本画像が視認でき、少なくとも一つ以上の潜像画像
部は視認できない。紫外線を照射して観察した場合に潜
像画像部が暗く視認され、且つ、赤外線反射表示装置で
観察した場合に、紫外線を照射して観察した場合と同一
の潜像画像部が赤外吸収部として視認できる。In this printed matter, a basic image having gradation is usually visible under visible light, and at least one latent image portion cannot be visually recognized. When observing by irradiating with ultraviolet rays, the latent image part is visually recognized as dark, and when observing with an infrared reflective display device, the same latent image part as observing by irradiating with ultraviolet rays is the infrared absorbing part. Can be seen as.
【００２７】更に、基材上に階調を有する基本画像を設
け、階調を有する基本画像は少なくとも一つ以上の潜像
画像部と階調を有する背景画像部が設けられ、潜像画像
部は任意の有彩色の第１のインキで印刷する第１の版面
と第１のインキとほぼ補色となるインキに紫外線を照射
すると可視光で発光する蛍光顔料を含有した第３のイン
キで印刷する第３の版面によって印刷され、階調を有す
る背景画像部は任意の有彩色の第１のインキで印刷する
第１の版面と赤外線吸収材料を含有した無彩色の第２の
インキで印刷する第２の版面によって印刷してもよく、
この場合、印刷物は通常可視光下では階調を有する基本
画像が視認でき、紫外線を照射して観察した場合に潜像
画像部が可視光で発光して視認され、且つ、赤外線反射
表示装置で観察した場合に、紫外線を照射して観察した
場合と同一の潜像画像部が赤外線反射部として視認でき
る。Further, a basic image having gradation is provided on a base material, and the basic image having gradation has at least one latent image portion and a background image portion having gradation, and the latent image portion Is printed with the first ink of any chromatic color and the third ink containing a fluorescent pigment that emits visible light when irradiated with ultraviolet rays on the ink that is a complementary color to the first plate surface and the first ink The background image portion printed with the third printing plate and having a gradation is printed with the first printing plate printed with the first ink of an arbitrary chromatic color and the second printing plate of the achromatic color containing the infrared absorbing material. You may print with 2 plates,
In this case, the printed matter can usually see a basic image having gradation under visible light, and when observed by irradiating with ultraviolet rays, the latent image portion is visually recognized by emitting visible light, and in an infrared reflective display device. When observed, the same latent image portion as when observed by irradiating ultraviolet rays can be visually recognized as an infrared reflection portion.
【００２８】本発明に用いる赤外線吸収材料は、７３０
ｎｍ以上〜１０００ｎｍ程度の波長の吸収特性を持って
いればよく、カーボンブラック、スズ化合物、ロイコ染
料等を利用することができる。本発明に用いる蛍光顔料
は紫外線を照射した場合、可視光で発光するものであれ
ば、特に限定されることはない。The infrared absorbing material used in the present invention is 730
It suffices that it has an absorption characteristic of a wavelength of not less than nm and about 1000 nm, and carbon black, tin compounds, leuco dyes and the like can be used. The fluorescent pigment used in the present invention is not particularly limited as long as it emits visible light when irradiated with ultraviolet rays.
【００２９】本発明の潜像パターンは、図柄、絵柄、文
字、記号、バーコード等の情報を付与することができ
る。The latent image pattern of the present invention can be provided with information such as patterns, pictures, characters, symbols and bar codes.
【００３０】本発明に用いる網点形状は、特に限定され
るものでなく、サークル、スクエア等を用いることがで
きる。The halftone dot shape used in the present invention is not particularly limited, and a circle, a square or the like can be used.
【００３１】本発明に用いる基材は、紙葉類、フィル
ム、プラスチック等を利用することができる。The substrate used in the present invention may be paper, film, plastic or the like.
【００３２】本発明に用いる印刷方法は特に限定されな
いが、網点を利用するオフセットで印刷する方法が好ま
しい。The printing method used in the present invention is not particularly limited, but an offset printing method using halftone dots is preferable.
【００３３】本発明に用いるエネルギー線は簡易的な紫
外線ランプ、赤外線表示装置等で十分潜像画像を視認す
ることができる。With the energy rays used in the present invention, a latent image can be sufficiently viewed with a simple ultraviolet lamp, an infrared display device or the like.
【００３４】本発明に使用する有彩色のインキとは色相
のあるインキであれば特に限定されることはなく、本発
明に使用する無彩色のインキとは白からグレー、黒まで
の色のことをいう。本発明の補色とは、２色の混色によ
り無彩色を表現可能な関係にある２色を、互いに補色と
している。本発明のほぼ等色とは、ＣＩＥ色差△Ｅが６
以下としている。但し、色差△Ｅがそれ以上ある場合
は、可視光下で潜像が視認しやすくなるが、その場合、
偽造者は特殊な印刷方法を用いることが容易に推測でき
るので、偽造者に対する偽造抑止効果となる。The chromatic color ink used in the present invention is not particularly limited as long as it is an ink having a hue, and the achromatic color ink used in the present invention is a color from white to gray to black. Say. The complementary colors of the present invention are two colors that are in a relationship capable of expressing an achromatic color by mixing two colors as complementary colors. In the present invention, the almost equal color means that the CIE color difference ΔE is 6
It is as follows. However, if the color difference ΔE is more than that, the latent image is easily visible under visible light. In that case,
Since it is easy for the forger to guess that the special printing method is used, the forgery has an effect of suppressing forgery.
【００３５】[0035]
【実施例】以下、実施例を用いて本発明を更に詳細に説
明するが、本発明の内容は、これらの実施例の範囲に限
定されるものではない。The present invention will be described in more detail below with reference to examples, but the contents of the present invention are not limited to the scope of these examples.
【００３６】（実施例１）プロセス印刷用のマゼンタイ
ンキ、カーボンブラックを含む墨インキ、そして緑色の
特色インキ９０％に緑色に可視光で発光する無色透明な
蛍光インキ（大日本インキ（株）製）を１０％配合した
もの（以下、緑インキ）を用意し、マゼンタインキとカ
ーボンブラックを含む墨インキのカラーチャートを作成
し、そのカラーチャートから当該２色のインキの色空間
を測定した。同様にして、マゼンタインキと緑インキの
色空間を測定した。それら二つの色空間が重なる部分を
等色可能空間とし、その空間内の網点面積率を、マゼン
タインキとカーボンブラックを含む墨インキの混色によ
るものと、マゼンタインキと緑インキの混色によるもの
から、最小二乗近似法を用いて算出した。(Example 1) Magenta ink for process printing, black ink containing carbon black, and colorless transparent fluorescent ink (made by Dainippon Ink and Chemicals, Inc.) that emits 90% of green special color ink with green visible light. Was prepared (hereinafter referred to as green ink), a color chart of black ink containing magenta ink and carbon black was prepared, and the color space of the two inks was measured from the color chart. Similarly, the color spaces of magenta ink and green ink were measured. The area where these two color spaces overlap is defined as a color-matchable space, and the halftone dot area ratio within that space is based on a mixture of magenta ink and black ink containing carbon black, and a mixture of magenta ink and green ink. , Was calculated using the least squares approximation method.
【００３７】図２に示す階調を有する基本画像を用意
し、画像が等色空間内になるようにトーンカーブ等を修
正することで正規化した。正規化された階調を有する基
本画像をマゼンタインキとカーボンブラックを含む墨イ
ンキの２種類のインキについて、算出された網点面積率
をもとに分色し、正規化された階調を有する基本画像を
マゼンタインキと緑インキの２種類のインキについて、
算出された網点面積率をもとに分色した。A basic image having the gradation shown in FIG. 2 was prepared, and the tone curve and the like were corrected so that the image was in the uniform color space for normalization. A basic image having a normalized gradation is subjected to color separation based on the calculated halftone dot area ratio for two types of ink, magenta ink and black ink containing carbon black, and has a normalized gradation. The basic image is for two types of ink, magenta ink and green ink,
Coloring was performed based on the calculated dot area ratio.
【００３８】マゼンタインキとカーボンブラックを含む
墨インキ用の分色版のそれぞれについて図３に示すよう
な潜像画像を潜像部分が印刷されるようにマスキングを
行い、マゼンタインキと緑インキ用の分色版のそれぞれ
について図４に示すように階調を有する背景画像部が印
刷されるようにマスキングを行った。For each of the color separation plates for black ink containing magenta ink and carbon black, a latent image as shown in FIG. 3 is masked so that the latent image portion is printed, and magenta ink and green ink are printed. Each of the color separation plates was masked so that a background image portion having gradation as shown in FIG. 4 was printed.
【００３９】それぞれのマゼンタインキ用の分色版を重
ね合わせてマゼンタ版とし、カーボンブラックを含む墨
インキ用の版面と蛍光顔料を加えた緑インキ用の版面は
分色版をそのまま使用する。それぞれの版面（ここでは
１５０線）を用いて、用紙に、それぞれのインキを加刷
した。The color separation plates for each magenta ink are overlapped to form a magenta plate, and the color separation plate is used as it is for the plate surface for black ink containing carbon black and the plate surface for green ink containing a fluorescent pigment. Each printing plate (here, 150 lines) was used to print each ink on the paper.
【００４０】図５に本発明の実施例１の印刷物を示す。
図５は本発明の印刷物を通常の可視光下で観察した場合
の図である。図５に示すように実施例１の印刷物１は通
常可視光下では階調を有する基本画像２が視認でき、少
なくとも一つ以上の潜像画像部３は視認できない。図６
に本発明の印刷物に赤外線を照射した場合の状態を示
す。印刷物１を赤外線の反射で観察すると潜像画像３に
印刷されている墨インキ内のカーボンブラックが赤外線
を吸収するので顕像化された。FIG. 5 shows a printed matter of Example 1 of the present invention.
FIG. 5 is a diagram when the printed matter of the present invention is observed under normal visible light. As shown in FIG. 5, in the printed matter 1 of Example 1, the basic image 2 having a gradation can be visually recognized under normal visible light, and at least one or more latent image portions 3 cannot be visually recognized. Figure 6
The state when the printed matter of the present invention is irradiated with infrared rays is shown in FIG. When the printed matter 1 was observed by reflection of infrared rays, the carbon black in the black ink printed on the latent image 3 absorbed infrared rays and was visualized.
【００４１】図７に本発明の印刷物に紫外線を照射した
場合の状態を示す。更に、紫外線を照射すると階調を有
する背景画像部４が可視光で発光し図６と同様の潜像画
像３が暗く顕像化した。FIG. 7 shows a state in which the printed matter of the present invention is irradiated with ultraviolet rays. Further, upon irradiation with ultraviolet rays, the background image portion 4 having a gradation emits visible light, and the latent image 3 similar to that shown in FIG. 6 becomes dark and visible.
【００４２】（実施例２）実施例１の印刷物のデザイン
で階調を有する背景画像４と潜像画像３を反転（ネガ／
ポジ）させて印刷物を作成した。実施例２の印刷物１
は、実施例１の印刷物と同様に通常可視光下では階調を
有する基本画像２が視認でき、少なくとも一つ以上の潜
像画像部３は視認できない。しかしながら、この印刷物
に赤外線を照射した場合、図８に示すように、階調を有
する背景画像部４に印刷されている墨インキ内のカーボ
ンブラックが赤外線を吸収するので顕像化され、潜像画
像３は赤外反射部として顕像化した。この印刷物に紫外
線を照射した場合、図９に示すように、潜像画像３が可
視光で発光し階調を有する背景画像部４が暗くなり、図
８と同様の潜像画像３が顕像化した。(Embodiment 2) In the design of the printed matter of Embodiment 1, the background image 4 having a gradation and the latent image 3 are inverted (negative / negative).
Positive) to make a printed matter. Printed matter 1 of Example 2
As with the printed matter of Example 1, the basic image 2 having gradation is visible under normal visible light, and at least one or more latent image portions 3 are not visible. However, when this printed matter is irradiated with infrared rays, as shown in FIG. 8, the carbon black in the black ink printed on the background image portion 4 having gradation absorbs infrared rays and is visualized to form a latent image. Image 3 was visualized as an infrared reflection part. When this printed matter is irradiated with ultraviolet rays, as shown in FIG. 9, the latent image 3 emits visible light and the background image portion 4 having gradation becomes dark, and the latent image 3 similar to that in FIG. 8 is visualized. Turned into
【００４３】以上、本発明の実施例に基づいて説明した
が、本発明はこの実施例に限定されるものではなく、特
許請求の範囲記載における技術的思想の範囲内であれ
ば、その他のいろいろな実施の形態が考えられる。Although the present invention has been described above based on the embodiment, the present invention is not limited to this embodiment, and various other modifications are possible within the scope of the technical idea in the claims. Various embodiments are possible.
【００４４】[0044]
【発明の効果】本発明は、特殊なインキを用いることな
く、第１の版面（潜像画像部及び背景画像部）を有彩色
のインキを用いて印刷し、第２の版面（潜像画像部又は
背景画像部）を赤外線吸収材料を含む無彩色のインキを
用いて印刷し、第３の版面（潜像画像部又は背景画像
部）を有彩色のインキに対して補色関係の蛍光顔料を含
有したインキで印刷することで、潜像画像部以外のデザ
インに階調を有するカラー印刷を施すことが可能とな
り、できるだけ少ない版数で、つまり、最低、３種類の
版面と３色のインキで多色再現性に優れる印刷物が得ら
れることから材料コスト及び印刷工程の低減が可能とな
り、また、特殊な網点形状を利用する必要がないため刷
り合わせが容易である。According to the present invention, the first plate surface (latent image portion and background image portion) is printed with chromatic color ink without using a special ink, and the second plate surface (latent image image portion) is printed. Part or background image part) is printed using an achromatic ink containing an infrared absorbing material, and the third plate surface (latent image part or background image part) is coated with a fluorescent pigment complementary to the chromatic ink. By printing with the included ink, it is possible to perform gradational color printing on the design other than the latent image area, and with a minimum number of plates, that is, at least three types of plate surfaces and three color inks. Since a printed matter excellent in multicolor reproducibility can be obtained, the material cost and the printing process can be reduced, and since it is not necessary to use a special halftone dot shape, the printing is easy.
【００４５】また、本発明の印刷物は通常可視光下では
階調を有する基本画像が視認でき、紫外線を照射して観
察した場合に潜像画像部が視認され、且つ、赤外線反射
表示装置で観察した場合に、紫外線を照射して観察した
場合と同一の潜像画像部が視認できる。よって、本発明
は２種類の光源（赤外線又は紫外線）で同じデザインの
潜像画像が顕在化可能が可能であるため、偽造防止効果
に優れ、誰でも用意に真偽判別することができる。In the printed matter of the present invention, a basic image having gradation is usually visible under visible light, a latent image portion is visually recognized when irradiated with ultraviolet rays, and observed with an infrared reflection display device. In this case, the same latent image portion as when observed by irradiating with ultraviolet rays can be visually recognized. Therefore, according to the present invention, the latent image having the same design can be made visible by using two kinds of light sources (infrared rays or ultraviolet rays), so that the anti-counterfeiting effect is excellent and anyone can easily make a genuine / counterfeit judgment.
【００４６】[0046]
【図１】本発明の印刷物の作成工程を示す図である。FIG. 1 is a diagram showing a production process of a printed matter of the present invention.
【図２】本発明の階調を有する基本画像を示す図であ
る。FIG. 2 is a diagram showing a basic image having gradation according to the present invention.
【図３】本発明の潜像画像を示す図である。FIG. 3 is a diagram showing a latent image of the present invention.
【図４】本発明の階調を有する背景画像を示す図であ
る。FIG. 4 is a diagram showing a background image having gradation according to the present invention.
【図５】本発明の印刷物である。FIG. 5 is a printed matter of the present invention.
【図６】本発明の印刷物に赤外線を照射した場合の図で
ある。FIG. 6 is a diagram in the case where the printed matter of the present invention is irradiated with infrared rays.
【図７】本発明の印刷物に紫外線を照射した場合の図で
ある。FIG. 7 is a diagram in the case where the printed matter of the present invention is irradiated with ultraviolet rays.
【図８】本発明の印刷物に赤外線を照射した場合の図で
ある。FIG. 8 is a diagram in the case where the printed matter of the present invention is irradiated with infrared rays.
【図９】本発明の印刷物に紫外線を照射した場合の図で
ある。FIG. 9 is a diagram in the case where the printed matter of the present invention is irradiated with ultraviolet rays.
１ 印刷物 ２ 階調を有する基本画像 ３ 潜像画像 ４ 階調を有する背景画像 1 printed matter Basic image with 2 gradations 3 latent image Background image with 4 gradations
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2C005 HA04 HB02 HB09 HB10 HB13 HB20 JB12 JB13 JB14 JB17 JB25 JB40 2H113 AA01 AA06 BB02 BB22 BC09 CA32 CA39 CA42 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 2C005 HA04 HB02 HB09 HB10 HB13 HB20 JB12 JB13 JB14 JB17 JB25 JB40 2H113 AA01 AA06 BB02 BB22 BC09 CA32 CA39 CA42
Claims (4)
色のインキを用い、前記基本画像は、階調を有する背景
画像部と少なくとも一つ以上の潜像画像部が設けられ、
通常可視光下では階調を有する基本画像が視認でき、紫
外線を照射して観察した場合に前記潜像画像部が暗く視
認され、且つ、赤外線反射表示装置で観察した場合に、
前記紫外線を照射して観察した場合と同一の前記潜像画
像部が赤外吸収部として視認できる印刷物の潜像作成方
法において、 前記階調を有する基本画像に対して、任意の有彩色の第
１のインキと赤外線吸収材料を含有した無彩色の第２の
インキのダブルトーンでの色彩と、前記第１のインキと
前記第１のインキとほぼ補色となるインキに紫外線を照
射すると可視光で発光する蛍光顔料を含有した第３のイ
ンキのダブルトーンでの色彩が、ほぼ等色となるように
色分解したデータを作成する工程と、 前記色分解したデータから前記第１のインキと第２のイ
ンキのダブルトーンでの第１のインキ用の分色版と第２
のインキ用の分色版、及び、前記第１のインキと第３の
インキのダブルトーンでの第１のインキ用の分色版と第
３のインキ用の分色版を作成する工程と、 前記第１のインキと第２のインキのダブルトーンでの第
１のインキ用の分色版と第２のインキ用の分色版に前記
潜像画像部をマスキングし、前記第１のインキと第３の
インキのダブルトーンでの第１のインキ用の分色版と第
３のインキ用の分色版に前記階調を有する背景画像部を
マスキングする工程と、 前記潜像画像部をマスキングした前記第１のインキと第
２のインキのダブルトーンでの第１のインキ用の分色版
と、前記階調を有する背景画像部をマスキングした前記
第１のインキと第３のインキのダブルトーンでの第１の
インキ用の分色版を重ね合せる工程と、 前記重ね合わせて得られた第１のインキ用の分色版と、
前記潜像画像部をマスキングした第２のインキ用の分色
版及び前記階調を有する背景画像部をマスキングした第
３のインキ用の分色版から、第１のインキ用の版面、第
２のインキ用の版面及び第３のインキ用の版面を作成す
る工程と、 前記第１のインキ用の版面、第２のインキ用の版面及び
第３のインキ用の版面を用いて印刷する工程からなるダ
ブルトーン印刷による潜像作成方法。1. A basic image having at least 3 gradations.
Using a color ink, the basic image is provided with a background image portion having gradation and at least one or more latent image portion,
Under normal visible light, a basic image having gradation can be visually recognized, when the latent image portion is visually recognized as dark when irradiated with ultraviolet rays, and when observed with an infrared reflective display device,
In the latent image forming method of a printed matter in which the latent image portion which is the same as that observed by irradiating with the ultraviolet ray can be visually recognized as an infrared absorbing portion, the basic image having the gradation is compared with an arbitrary chromatic color first image. When the achromatic color of the first ink and the second ink of the achromatic color containing the infrared absorbing material is duotone, and the ink which is almost the complementary color of the first ink and the first ink is irradiated with ultraviolet rays, it becomes visible light. A step of creating color-separated data so that the duotone color of the third ink containing a fluorescent pigment that emits light has almost the same color; and the first ink and the second ink based on the color-separated data. Color separation plate for the first ink and the second for the duotone of the ink
And a step of producing a color separation plate for the first ink and a color separation plate for the third ink in duotone of the first ink and the third ink, The latent image portion is masked on the color separation plate for the first ink and the color separation plate for the second ink in duotone of the first ink and the second ink, Masking the background image portion having the gradation on the color separation plate for the first ink and the color separation plate for the third ink with duotone of the third ink; and masking the latent image part The color separation plate for the first ink in the double tone of the first ink and the second ink, and the double ink of the first ink and the third ink in which the background image portion having the gradation is masked. A step of superimposing a color separation plate for the first ink on a tone, And the first minute color plate for the ink that has been,
From the color separation plate for the second ink masking the latent image portion and the color separation plate for the third ink masking the background image portion having the gradation, a plate surface for the first ink, a second From the step of creating a plate surface for the ink and the plate surface for the third ink, and the step of printing using the plate surface for the first ink, the plate surface for the second ink, and the plate surface for the third ink Double-tone printing latent image creation method.
のインキを用い、前記基本画像は、階調を有する背景画
像部と少なくとも一つ以上の潜像画像部が設けられ、通
常可視光下では前記階調を有する基本画像が視認でき、
紫外線を照射して観察した場合に前記潜像画像部が可視
光で発光して視認され、且つ、赤外線反射表示装置で観
察した場合に、前記紫外線を照射して観察した場合と同
一の前記潜像画像部が赤外線反射部として視認できる印
刷物の潜像作成方法において、 任意の有彩色の第１のインキと赤外線吸収材料を含有し
た無彩色の第２のインキのダブルトーンでの色彩と、前
記第１のインキと前記第１のインキとほぼ補色となるイ
ンキに紫外線を照射すると可視光で発光する蛍光顔料を
含有した第３のインキのダブルトーンでの色彩が、ほぼ
等色となるように色分解したデータを作成する工程と、 前記色分解したデータから前記第１のインキと第２のイ
ンキのダブルトーンでの第１のインキ用の分色版と第２
のインキ用の分色版、及び、前記第１のインキと第３の
インキのダブルトーンでの第１のインキ用の分色版と第
３のインキ用の分色版とを作成する工程と、 前記第１のインキと第２のインキのダブルトーンでの第
１のインキ用の分色版と第２のインキ用の分色版に前記
階調を有する背景画像部をマスキングし、前記第１のイ
ンキと第３のインキのダブルトーンでの第１のインキ用
の分色版と第３のインキ用の分色版に前記潜像画像部を
マスキングする工程と、 前記階調を有する背景画像部をマスキングした前記第１
のインキと第２のインキのダブルトーンでの第１のイン
キ用の分色版と、前記潜像画像部をマスキングした前記
第１のインキと第３のインキのダブルトーンでの第１の
インキ用の分色版を重ね合せる工程と、 前記重ね合せて得られた第１のインキ用の分色版と、前
記階調を有する背景画像部をマスキングした第２のイン
キ用の分色版及び前記潜像画像部をマスキングした第３
のインキ用の分色版から、第１のインキ用の版面、第２
のインキ用の版面及び第３のインキ用の版面を作成する
工程と、 前記第１のインキ用の版面、第２のインキ用の版面及び
第３のインキ用の版面を用いて印刷する工程からなるダ
ブルトーン印刷による潜像作成方法。2. A basic image having gradation has at least three colors of ink, and the basic image is provided with a background image part having gradation and at least one or more latent image parts, and is usually under visible light. Then you can see the basic image with the gradation,
When observed by irradiating with ultraviolet rays, the latent image portion is visually recognized by emitting visible light, and when observed with an infrared reflective display device, the same latent image as when observing by irradiating with ultraviolet rays is used. In a latent image forming method of a printed matter in which an image image portion can be visually recognized as an infrared reflection portion, a duotone color of an arbitrary chromatic first ink and an achromatic second ink containing an infrared absorbing material, When the first ink and the ink that is almost the complementary color to the first ink are irradiated with ultraviolet rays, the duotone color of the third ink containing the fluorescent pigment that emits visible light becomes substantially the same color. A step of creating color-separated data, a color separation plate for the first ink in a double tone of the first ink and the second ink, and a second color separation data from the color-separated data.
And a step of producing a color separation plate for the first ink and a color separation plate for the first ink and a color separation plate for the third ink in duotone of the first ink and the third ink. The background image portion having the gradation is masked on the color separation plate for the first ink and the color separation plate for the second ink in duotone of the first ink and the second ink, Masking the latent image portion with the color separation plate for the first ink and the color separation plate for the third ink in duotone of the first ink and the third ink, and the background having the gradation The first masked image portion
Color separation plate for the first ink in the double tone of the second ink and the second ink, and the first ink in the double tone of the first ink and the third ink with the latent image portion masked A step of superimposing color separation plates for ink, a color separation plate for the first ink obtained by the superposition, a color separation plate for a second ink in which the background image portion having the gradation is masked, and Third masking the latent image portion
From the color separation plate for the first ink, the plate surface for the first ink, the second
From the step of creating a plate surface for the ink and the plate surface for the third ink, and the step of printing using the plate surface for the first ink, the plate surface for the second ink, and the plate surface for the third ink Double-tone printing latent image creation method.
前記階調を有する基本画像は少なくとも一つ以上の潜像
画像部と階調を有する背景画像部が設けられ、前記潜像
画像部は任意の有彩色の第１のインキで印刷する第１の
版面と赤外線吸収材料を含有した無彩色の第２のインキ
で印刷する第２の版面によって印刷され、前記階調を有
する背景画像部は任意の有彩色の第１のインキで印刷す
る第１の版面と前記第１のインキとほぼ補色となるイン
キに紫外線を照射すると可視光で発光する蛍光顔料を含
有した第３のインキで印刷する第３の版面によって印刷
され、 前記第１のインキと前記第２のインキのダブルトーンで
の色彩と、前記第１のインキと前記第３のインキのダブ
ルトーンでの色彩がほぼ等色であることを特徴とした印
刷物であって、 前記印刷物は通常可視光下では階調を有する基本画像が
視認でき、紫外線を照射して観察した場合に前記潜像画
像部が暗く視認され、且つ、赤外線反射表示装置で観察
した場合に、前記紫外線を照射して観察した場合と同一
の前記潜像画像部が赤外吸収部として視認できることを
特徴とした印刷物。3. A basic image having gradation is provided on a base material,
The basic image having gradation has at least one latent image portion and the background image portion having gradation, and the latent image portion is printed with a first ink of an arbitrary chromatic color. The first image printed by the second plate surface printed with the plate surface and the second ink of the achromatic color containing the infrared absorbing material, and the background image portion having the gradation is printed by the first ink of the arbitrary chromatic color. When the plate surface and the ink that is almost the complementary color to the first ink are irradiated with ultraviolet rays, the third plate surface is printed with the third ink containing the fluorescent pigment that emits visible light. The printed matter is characterized in that the duotone color of the second ink and the duotone colors of the first ink and the third ink are substantially the same color, and the printed matter is normally visible. Basic with gradation under light When the image is visible, the latent image portion is visually dark when observed by irradiating with ultraviolet light, and when observed with an infrared reflective display device, the same latent image as when observing by irradiating with the ultraviolet ray is observed. Image A printed matter characterized in that the image part can be visually recognized as an infrared absorption part.
前記階調を有する基本画像は少なくとも一つ以上の潜像
画像部と階調を有する背景画像部が設けられ、前記潜像
画像部は任意の有彩色の第１のインキで印刷する第１の
版面と前記第１のインキとほぼ補色となるインキに紫外
線を照射すると可視光で発光する蛍光顔料を含有した第
３のインキで印刷する第３の版面によって印刷され、前
記階調を有する背景画像部は任意の有彩色の第１のイン
キで印刷する第１の版面と赤外線吸収材料を含有した無
彩色の第２のインキで印刷する第２の版面によって印刷
され、 前記第１のインキと前記第２のインキのダブルトーンで
の色彩と、前記第１のインキと前記第３のインキのダブ
ルトーンでの色彩がほぼ等色であることを特徴とした印
刷物であって、 前記印刷物は通常可視光下では前記階調を有する基本画
像が視認でき、紫外線を照射して観察した場合に前記潜
像画像部が可視光で発光して視認され、且つ、赤外線反
射表示装置で観察した場合に、前記紫外線を照射して観
察した場合と同一の前記潜像画像部が赤外線反射部とし
て視認できることを特徴とした印刷物。4. A basic image having gradation is provided on a substrate,
The basic image having gradation has at least one latent image portion and the background image portion having gradation, and the latent image portion is printed with a first ink of an arbitrary chromatic color. A background image having the gradation, which is printed by a third plate surface which is printed with a third ink containing a fluorescent pigment which emits visible light when the plate surface and the ink which is almost complementary to the first ink are irradiated with ultraviolet rays. The part is printed by a first plate surface printed with an arbitrary chromatic first ink and a second plate surface printed with an achromatic second ink containing an infrared absorbing material, wherein the first ink and the The printed matter is characterized in that the duotone color of the second ink and the duotone colors of the first ink and the third ink are substantially the same color, and the printed matter is normally visible. Has the gradation under light When the main image is visible, the latent image portion emits visible light when visible by irradiating with ultraviolet light, and when observed with an infrared reflective display device, it is observed by irradiating with the ultraviolet light. The same printed matter as the case where the latent image portion can be visually recognized as an infrared reflection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002087814A JP3545388B2 (en) | 2002-03-27 | 2002-03-27 | Latent image forming method by double tone printing and printed matter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002087814A JP3545388B2 (en) | 2002-03-27 | 2002-03-27 | Latent image forming method by double tone printing and printed matter thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003276299A true JP2003276299A (en) | 2003-09-30 |
| JP3545388B2 JP3545388B2 (en) | 2004-07-21 |
Family
ID=29207432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002087814A Expired - Lifetime JP3545388B2 (en) | 2002-03-27 | 2002-03-27 | Latent image forming method by double tone printing and printed matter thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3545388B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005297538A (en) * | 2004-03-18 | 2005-10-27 | Ricoh Co Ltd | Image forming device |
| JP2006095968A (en) * | 2004-09-30 | 2006-04-13 | Kyodo Printing Co Ltd | Recording medium |
| JP2007144671A (en) * | 2005-11-25 | 2007-06-14 | National Printing Bureau | Authenticity discriminable printed matter |
| JP2008536715A (en) * | 2005-04-13 | 2008-09-11 | ストックホルム イノヴェーション インコーポレイテッド | Writing paper |
| JP2015010144A (en) * | 2013-06-28 | 2015-01-19 | 理想科学工業株式会社 | Ink |
| US9039195B2 (en) | 2009-07-09 | 2015-05-26 | Seiko Epson Corporation | Projector, image projecting system, and image projecting method |
| JP2016124589A (en) * | 2015-01-05 | 2016-07-11 | 小林製薬株式会社 | Package |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4560379B2 (en) * | 2004-03-18 | 2010-10-13 | 株式会社リコー | Image forming apparatus, image forming method, program, and recording medium |
| JP2005297538A (en) * | 2004-03-18 | 2005-10-27 | Ricoh Co Ltd | Image forming device |
| JP2006095968A (en) * | 2004-09-30 | 2006-04-13 | Kyodo Printing Co Ltd | Recording medium |
| JP4537164B2 (en) * | 2004-09-30 | 2010-09-01 | 共同印刷株式会社 | recoding media |
| JP2008536715A (en) * | 2005-04-13 | 2008-09-11 | ストックホルム イノヴェーション インコーポレイテッド | Writing paper |
| JP4649612B2 (en) * | 2005-11-25 | 2011-03-16 | 独立行政法人 国立印刷局 | Authentic printed material |
| JP2007144671A (en) * | 2005-11-25 | 2007-06-14 | National Printing Bureau | Authenticity discriminable printed matter |
| US9039195B2 (en) | 2009-07-09 | 2015-05-26 | Seiko Epson Corporation | Projector, image projecting system, and image projecting method |
| JP2015010144A (en) * | 2013-06-28 | 2015-01-19 | 理想科学工業株式会社 | Ink |
| JP2016124589A (en) * | 2015-01-05 | 2016-07-11 | 小林製薬株式会社 | Package |
| JP2019530008A (en) * | 2016-09-16 | 2019-10-17 | モボ エティケッテン ゲーエムベーハーＭＯＢＯ Ｅｔｉｋｅｔｔｅｎ ＧｍｂＨ | Anti-counterfeiting markings that can be mass produced, in particular anti-counterfeiting labels, methods for mass production of such markings, and methods for identifying such markings |
| CN111683818A (en) * | 2019-01-11 | 2020-09-18 | 中钞光华印制有限公司 | Manufacturing method of multicolor fluorescent product, multicolor fluorescent product and fluorescent handicraft |
| KR20210003544A (en) * | 2019-07-02 | 2021-01-12 | (주)광인사 | the improved color security printing method using UV fluorescent ink |
| KR102205641B1 (en) * | 2019-07-02 | 2021-01-21 | 주식회사 광인사 | the improved color security printing method using UV fluorescent ink |
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