JP2695523B2 - Printed material suitable for copy protection - Google Patents

Printed material suitable for copy protection

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Publication number
JP2695523B2
JP2695523B2 JP2295370A JP29537090A JP2695523B2 JP 2695523 B2 JP2695523 B2 JP 2695523B2 JP 2295370 A JP2295370 A JP 2295370A JP 29537090 A JP29537090 A JP 29537090A JP 2695523 B2 JP2695523 B2 JP 2695523B2
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Japan
Prior art keywords
pattern
dot
latent image
background
line screen
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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.)
Expired - Lifetime
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JP2295370A
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Japanese (ja)
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JPH04170569A (en
Inventor
宏光 中西
俊洋 堤
正人 木内
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大蔵省 印刷局長
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Priority to JP2295370A priority Critical patent/JP2695523B2/en
Publication of JPH04170569A publication Critical patent/JPH04170569A/en
Application granted granted Critical
Publication of JP2695523B2 publication Critical patent/JP2695523B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Description

【発明の詳細な説明】 〔産業上の利用分野〕 有価証券、各種証明書及び重要書類等の複写防止技術に関するものである。 DETAILED DESCRIPTION OF THE INVENTION securities [relates] is related copy protection technology such as various certificates and important documents.

〔従来の技術〕 [Prior art]

著しい複写機の進歩に伴ってカラーコピー機が普及し、有価証券、各種証明書及び重要書類等が、実物と酷似する体裁に複写されるといった偽造の危険性が高まってきている。 Color copier is spread with the progress of significant copier, securities, various certificates, and important documents etc., it has been increasing the risk of counterfeiting, such are copied to the appearance closely resembling the actual product.

従来、パターンの粗密を利用して潜像を印刷し、カラーコピー機等により複製した場合、その潜像が現れる等の特許出願(特許出願公開 昭58−38188号)がなされているが、パターンの粗密を利用していることから潜像が肉眼でも認められてしまうため、パターンにオーバープリントを行い、潜像をカムフラージュする考案(特許出願公告 昭64−5835号)がなされている。 Conventionally, to print the latent image by using the density of the pattern, if the duplicated by a color copier or the like, patent applications (Patent Application Publication Sho 58-38188) such as the latent image appears, but have been made, the pattern since the latent image because it utilizes the density of will be recognized to the naked eye, carried out overprint pattern, devised to camouflage the latent image (Patent application publication Sho 64-5835) have been made. しかし、この方法でカムフラージュするには、一色追加する必要があり、手間とコストがかかっていた。 However, in order to camouflage in this way, it is necessary to color added, time and cost it takes.

〔発明が解決しようとする課題〕 [Problems that the Invention is to Solve]

この発明は、有価証券、各種証明書及び重要書類等に複写機による偽造を防止する機能を持たせるため、印刷物上に網点や万線からなるパターンで文字・記号・模様等の潜像をオフセット、グラビア、フレキソ又はスクリーン印刷等を用いて一色で印刷して、この印刷物をカラーコピー機等で複写した場合、偽造物であることが一目瞭然となるようにした印刷物を得ることを目的とする。 The present invention, securities, to the various certificates and important documents such as have the function of preventing the forgery by a copying machine, a latent image such as characters, symbols, patterns in a pattern consisting of dot or line screen on the printed material offset, gravure, printed with one color by using a flexographic or screen printing, etc., when copying the printed matter with a color copying machine or the like, and to obtain a printed matter to become quite obvious that it is a forgery .

〔課題を解決するための手段〕 [Means for Solving the Problems]

用紙表面に、複写機で解像されない程度の所定の線数の網点又は万線等のパターンからなる潜像と、複写機で解像される程度の所定の線数の網点又は万線等のパターンからなる背景を一色で同時に印刷するとともに、潜像の領域と背景の領域にまたがって存在する均一な濃度のカムフラージュ模様を該模様以外の均一な濃度のバックグラウンドに対して大きな面積率となるように施すにあたって、潜像の領域に存在するカムフラージュ模様は潜像を構成する網点又は万線等のパターンの線数と等しくなるように、且つ、背景の領域に存在するカムフラージュ模様は背景を構成する網点又は万線等のパターンの線数と等しくなるように、カムフラージュ模様を網点又は万線等のパターンによって施す。 The paper surface, a copier and a latent image consisting of a pattern of dot or line screen or the like of a predetermined number of lines as not resolved, the predetermined line number of the halftone dot or line screen to the extent that is resolved by a copying machine thereby printed simultaneously the background color consisting of patterns equal, a large area ratio of the camouflage pattern of uniform density extending over the region of the area and the background of the latent image with respect to uniform concentration background other than 該模 like in performing such a, as camouflage pattern that exists in the region of the latent image is equal to the number of lines of a pattern of dot or line screen or the like constituting the latent image, and, camouflage pattern existing in the area of ​​the background to be equal to the number of lines of a pattern of dot or line screen or the like constituting the background, applied by a pattern such as dot or line screen to camouflage pattern.

〔作用〕 [Action]

上述のように構成された印刷物を作製することによって、一色の印刷物に複写防止機能を施すことが可能となり、刷合わせ等の位置合わせが不用となる。 By making configured prints as described above, it is possible to perform the copy prevention function color prints, the alignment of the printing registration, etc. becomes unnecessary.

また、用紙表面には、複写機で解像されない程度の所定の線数の網点又は万線等のパターンからなる潜像と、 Further, the sheet surface, a latent image consisting of a pattern of dot or line screen or the like of a predetermined number of lines as not resolved by a copying machine,
複写機で解像される程度の所定の線数の網点又は万線等のパターンからなる背景を一色で同時に印刷するとともに、潜像の領域と背景の領域にまたがって存在する均一な濃度のカムフラージュ模様を該模様以外の均一な濃度のバックグラウンドに対して大きな面積率となるように施すにあたって、潜像の領域に存在するカムフラージュ模様は潜像を構成する網点又は万線等のパターンの線数と等しくなるように、且つ、背景の領域に存在するカムフラージュ模様は背景を構成する網点又は万線等のパターンの線数と等しくなるように、カムフラージュ模様を網点又は万線等のパターンによって施してあるので、肉眼では面積率すなわち濃度のコントラストによってカムフラージュ模様のみが識別されるが、この印刷物を複写機でコピーすると While at the same time printing a background consisting of a pattern of a predetermined number of lines of the halftone dot or line screen or the like to the extent that is resolved by a copying machine in color, uniform density extending over the region of the area and the background of the latent image in performing such a large area ratio of camouflage pattern against uniform concentration background other than 該模 like, camouflage pattern that exists in the region of the latent image of the pattern of the dot or line screen or the like constituting the latent image to be equal to the line number, and, camouflage pattern existing in the area of ​​the background to be equal to the number of lines of a pattern of dot or line screen or the like constituting the background, halftone dot or line screen like the camouflage pattern because are subjected by the pattern, to the naked eye but only camouflage pattern by the contrast area ratio i.e. the concentration is identified, copying the printed matter in copier 複写機で解像される程度の所定の線数の網点又は万線等のパターンから構成される背景はそのまま再現されるのに対して、複写機で解像されない程度の所定の線数の網点又は万線等のパターンから構成される潜像は再現されず、且つ、背景の領域に存在する大きな面積率のカムフラージュ模様はそのまま再現されるのに対して、潜像の領域に存在するカムフラージュ模様はたとえ面積率が大きくてもほとんど再現されず、従来のカムフラージュ模様を施した印刷物を複写することによって得られる潜像よりも潜像がはっきりと識別される。 Against a pattern of a predetermined number of lines of the halftone dot or line screen or the like to the extent that is resolved by the copier's configured background is reproduced as the number of predetermined line of as not resolved by a copying machine latent image composed of a pattern of dot or line screen or the like is not reproduced, and, camouflage pattern of large area ratio present in the region of the background for being reproduced as present in areas of the latent image camouflage pattern is hardly reproduced even if the area ratio is large, a latent image is clearly distinguished than the latent image obtained by copying the printed matter subjected to conventional camouflage pattern.

〔実施例〕 〔Example〕

図1の概念図を示すように、一色のオフセット印刷で、菊の花の潜像を構成するスクリーン線数200lines/i As it is shown a conceptual diagram of FIG. 1, one color offset printing, screen ruling constituting the flower of the latent image of Chrysanthemum 200lines / i
nch、網点パーセント10%のパターン(1)及びスクリーン線数200lines/inch、網点パーセント15%のパターン(3)、並びに、背景を構成するスクリーン線数100l nch, dot percentage of 10% of the pattern (1) and the screen ruling 200lines / inch, dot percentage of 15% of the pattern (3), as well as, the number of screen lines constituting the background 100l
ines/inch、網点パーセント10%のパターン(2)及びスクリーン線数100lines/inch、網点パーセント15%のパターン(3′)を印刷した。 ines / inch, dot percentage of 10% of the pattern (2) and the screen ruling 100lines / inch, dot percentage of 15% of the pattern (3 ') was printed.

図2に示すように、この印刷物を肉眼で一見すると、 As shown in FIG. 2, at first glance this printed matter with the naked eye,
パターン(3)及び(3′)から構成される面積率が15 Pattern (3) and (3 ') from the configured area ratio is 15
%の部分が、パターン(1)及び(2)から構成される面積率が10%の部分よりも濃度が高いため、同心円模様として認識される。 % Portions, since the pattern (1) and (2) from the configured area ratio higher concentration than 10% of the portion is recognized as a concentric pattern.

図3に示すように、この印刷物を複写したところ(使用した複写機は、フジゼロックス5055:モノクロコピー機とキャノンレーザーコピアCLC1:カラーコピー機)、 As shown in FIG. 3 were copied and printed matter (copying machine used was Fuji Xerox 5055: monochrome copiers and Canon Laser Copier CLC1: color copier),
複写機で解像される程度の所定の線数のパターン(2) The degree to be resolved by a copying machine of a predetermined number of lines in the pattern (2)
及び(3′)から構成される背景の領域は、そのまま再現されるの対して、複写機で解像されない程度の所定の線数のパターン(1)及び(3)から構成される菊の花の潜像模様の領域は、小さな面積率の部分(1)はもとより大きな面積率の部分(3)でさえもほとんど再現されず、複製品であることが一目瞭然となった。 And a background area consisting of (3 ') is for being reproduced as the number of predetermined line of as not resolved by a copying machine pattern (1) and from the configured Chrysanthemum (3) Flowers region of the latent image pattern is hardly reproduced even at the portion of smaller area ratio (1) as well a large area ratio portion (3), it has become obvious to be reproductions.

〔発明の効果〕 〔Effect of the invention〕

本発明は、一色の印刷でコピー機等による複写を防止する機能をもった印刷物を提供するものである。 The present invention is to provide a printed matter having a function of preventing copying by copier or the like in color printing.

また、潜像をカムフラージュするために、他の一色を加色することなくカムフラージュ模様を設けることによって、肉眼では潜像が識別されないようにした。 Further, in order to camouflage the latent image, by providing a camouflage pattern without additive color other color by the naked eye and so the latent image is not identified.

この発明により、複写機による複写を防止する機能をもたせた有価証券、各種証明書及び重要書類等の作製ができ、それによって偽造防止効果があ高められた。 This invention, securities remembering function of preventing copying by a copying machine, manufactured such as various certificates and important documents can, elevated preventive effect there forged by it.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

図1は、実施例の印刷物の概要を示した図であり、図2 Figure 1 is a diagram showing an outline of a printed matter of Example, Figure 2
は、実施例の印刷物を肉眼で見た場合を示す。 Shows when viewing the printed material of Example naked eye. 図3は、 Fig. 3,
この印刷物を複写した場合のコピーを示す。 It shows a copy in the case of copying the printed matter. 1……スクリーン線数200lines/inch、網点パーセント1 1 ...... the number of screen lines 200lines / inch, dot percent 1
0%の部分 2……スクリーン線数100lines/inch、網点パーセント1 0% of the portion 2 ...... screen ruling 100lines / inch, dot percent 1
0%の部分 3……スクリーン線数200lines/inch、網点パーセント1 0% of the portion 3 ...... screen frequency 200lines / inch, dot percent 1
5%の部分 3′……スクリーン線数100lines/inch、網点パーセント15%の部分 5% of the portion 3 '...... screen frequency 100lines / inch, the portion of the halftone dot percentage of 15%

Claims (1)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】用紙表面に、複写機で解像されない程度の所定の線数の網点又は万線等のパターンからなる潜像と、複写機で解像される程度の所定の線数の網点又は万線等のパターンからなる背景を一色で同時に印刷するとともに、潜像の領域と背景の領域にまたがって存在する均一な濃度のカムフラージュ模様を該模様以外の均一な濃度のバックグラウンドに対して大きな面積率となるように施すにあたって、潜像の領域に存在するカムフラージュ模様は潜像を構成する網点又は万線等のパターンの線数と等しくなるように、且つ、背景の領域に存在するカムフラージュ模様は背景を構成する網点又は万線等のパターンの線数と等しくなるように、カムフラージュ模様を網点又は万線等のパターンによって施したことを特徴とする複写防止に To 1. A paper surface, a latent image consisting of a pattern of dot or line screen or the like of a predetermined number of lines as not resolved by a copying machine, a predetermined number of lines enough to be resolved by a copying machine while at the same time printing a background consisting of patterns such as dot or line screen in color, the camouflage pattern of uniform density extending over the region of the area and the background of the latent image on the background of the uniform concentration of non 該模 like in performing such a large area ratio against, as camouflage pattern that exists in the region of the latent image is equal to the number of lines of a pattern of dot or line screen or the like constituting the latent image, and, in the area of ​​the background camouflage pattern present are to be equal to the number of lines of a pattern of dot or line screen or the like constituting the background, the copy prevention, characterized in that subjected by the pattern such as dot or line screen to camouflage pattern する印刷物。 Printed materials.
JP2295370A 1990-11-02 1990-11-02 Printed material suitable for copy protection Expired - Lifetime JP2695523B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2295370A JP2695523B2 (en) 1990-11-02 1990-11-02 Printed material suitable for copy protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2295370A JP2695523B2 (en) 1990-11-02 1990-11-02 Printed material suitable for copy protection

Publications (2)

Publication Number Publication Date
JPH04170569A JPH04170569A (en) 1992-06-18
JP2695523B2 true JP2695523B2 (en) 1997-12-24

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ID=17819752

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090059254A1 (en) * 2007-08-28 2009-03-05 Seiko Epson Corporation Tint Block Image Generation Program and Tint Block Image Generation Device
US7715055B2 (en) 2004-01-08 2010-05-11 Ricoh Company, Ltd. Detection of undesired document alteration and duplication, and generating verification data for such detection
US8045232B2 (en) 2006-07-27 2011-10-25 Ricoh Company, Ltd. Image display medium, method and system for preparing composite image display data
US8180102B2 (en) 2007-03-19 2012-05-15 Ricoh Company, Ltd. Image processing device, image processing method, program, and recording medium
US8325970B2 (en) 2007-03-19 2012-12-04 Ricoh Company, Limited Apparatus, method, and computer product for image processing
KR101468412B1 (en) 2014-08-27 2014-12-03 한국조폐공사 A printed matter for forgery prevention and method of verifying a counterfeit
KR101514926B1 (en) * 2014-07-21 2015-04-24 권두연 Thermal transfer paper displaying 3D lenticular image effects, the manufacturing method thereof and the transferring method using the thermal transfer paper

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340159A (en) * 1991-07-12 1994-08-23 The Standard Register Company Varying tone security document
GB9716878D0 (en) 1997-08-08 1997-10-15 Unilever Plc Soap wrappers
JP4290681B2 (en) 2005-06-30 2009-07-08 シャープ株式会社 Image processing apparatus, image processing method, image processing program, machine-readable recording medium recording image processing program, and printed matter
US8711436B2 (en) 2007-09-06 2014-04-29 Seiko Epson Corporation Tint block image generation program and tint block image generation device
US8537410B2 (en) 2008-01-17 2013-09-17 Seiko Epson Corporation Tint block image generation program and tint block image generation device using multi-grayscale camouflage pattern data
JP2010087780A (en) 2008-09-30 2010-04-15 Fuji Xerox Co Ltd Image forming apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63172673U (en) * 1987-04-30 1988-11-09
JPH0520536Y2 (en) * 1987-06-10 1993-05-27

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7715055B2 (en) 2004-01-08 2010-05-11 Ricoh Company, Ltd. Detection of undesired document alteration and duplication, and generating verification data for such detection
US8045232B2 (en) 2006-07-27 2011-10-25 Ricoh Company, Ltd. Image display medium, method and system for preparing composite image display data
US8180102B2 (en) 2007-03-19 2012-05-15 Ricoh Company, Ltd. Image processing device, image processing method, program, and recording medium
US8325970B2 (en) 2007-03-19 2012-12-04 Ricoh Company, Limited Apparatus, method, and computer product for image processing
US20090059254A1 (en) * 2007-08-28 2009-03-05 Seiko Epson Corporation Tint Block Image Generation Program and Tint Block Image Generation Device
KR101514926B1 (en) * 2014-07-21 2015-04-24 권두연 Thermal transfer paper displaying 3D lenticular image effects, the manufacturing method thereof and the transferring method using the thermal transfer paper
KR101468412B1 (en) 2014-08-27 2014-12-03 한국조폐공사 A printed matter for forgery prevention and method of verifying a counterfeit

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