WO2006133615A1 - Procede d'impression pour document securise avec ombrage integre de prevention de copie - Google Patents

Procede d'impression pour document securise avec ombrage integre de prevention de copie Download PDF

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Publication number
WO2006133615A1
WO2006133615A1 PCT/CN2006/000853 CN2006000853W WO2006133615A1 WO 2006133615 A1 WO2006133615 A1 WO 2006133615A1 CN 2006000853 W CN2006000853 W CN 2006000853W WO 2006133615 A1 WO2006133615 A1 WO 2006133615A1
Authority
WO
WIPO (PCT)
Prior art keywords
copy
shading
data
document
digital watermark
Prior art date
Application number
PCT/CN2006/000853
Other languages
English (en)
Chinese (zh)
Inventor
Wenfa Qi
Yali Lei
Lidong Wang
Bin Yang
Original Assignee
Beijing Founder Electronics Co., Ltd.
Peking University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Founder Electronics Co., Ltd., Peking University filed Critical Beijing Founder Electronics Co., Ltd.
Publication of WO2006133615A1 publication Critical patent/WO2006133615A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/10—Watermarks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing

Definitions

  • the invention belongs to the technical field of document printing, and relates to a method for printing a document against copying, in particular to a method for distinguishing an original document and a copy by simultaneously printing an anti-copying pattern embedded in a security graphic at the bottom of the original document. . Background technique
  • Paper is an important carrier of information dissemination.
  • the confidentiality of printed documents is also particularly important. For example, improper copying of confidential documents and certificates becomes a problem, which promotes the development of printing anti-counterfeiting technology to a certain extent.
  • the anti-counterfeiting technology of printing technology requires precise printing equipment and inks and papers matched with it. If you can monopolize a set of high-quality, sophisticated computer-based printing equipment and raw materials, or a process that others do not have, or do not have enough financial resources to copy, anti-counterfeiting technology can fully play its role.
  • Common printing anti-counterfeiting technologies include gravure printing, hand-engraved embossing, engraving, rainbow printing, computer-printed printing, and so on.
  • the cost of printing is relatively high, and the anti-counterfeiting effect depends on factors such as the quality of printing, the difficulty of plate making and printing, and the size of investment in disposable equipment.
  • the more ideal the anti-counterfeiting effect the higher the corresponding production cost, so only enterprises with strong capital and technical strength will adopt it; the second is not easy to identify and judge the authenticity of the document.
  • the anti-counterfeiting technology with high printing difficulty is mainly based on the fact that people use the naked eye to identify when necessary. It is difficult for those who do not have professional printing knowledge to accurately distinguish the authenticity.
  • the anti-counterfeiting technology described above prevents counterfeiters from copying the same document to a certain extent, but faces the challenge of growing copying or scanning devices.
  • An object of the present invention is to provide a printing method in which a security document having an anti-copy texture is embedded, in view of the deficiencies of the prior art.
  • the method can print a security document with copy-proof shading by ordinary printing paper and printing equipment, thereby greatly reducing the cost of printing such documents, and the method can freely design anti-copy shading, which is very Good flexibility.
  • the technical solution adopted by the present invention is:
  • a method for printing a security document with an anti-copy shading comprising the following steps:
  • a graphic user interface GUI Graphic User Interface
  • a function module for generating anti-copy shading is integrated in the printer driver, and then a core module for generating a copy-proof shading function is called in the printer driver, and according to the set technology
  • the parameter generates digital watermark data, and saves the watermark data in a corresponding page description file, where the digital watermark data includes three parts: a background pattern area, a mark text area and an interference pattern;
  • the printer driver When printing a document, the printer driver combines the intercepted data file of the normal document with the digital watermark data file to generate a final page description file;
  • step (1) when the core module that generates the anti-copy shading function is generated in the printer driver to generate the digital watermark data, the user sets the shading color and density in the GUI of the anti-copy shading function module, and selects the interference pattern. .
  • step (1) when the core module for generating the anti-copy shading function is generated in the printer driver to generate digital watermark data, the user sets the content of the markup text, the font attribute, the setting, the angle, and the GUI in the GUI of the copy-proof shading function module. Whether the markup text is repeatedly tiled on the layout.
  • step (1) the number of core modules generated to generate the anti-copy shading function is called in the printer driver.
  • the print date and printer IP address information are embedded in the copy proof.
  • step (1) digital watermark data generated by the core module of the copy-proof shading function is stored in the extended page description language PS2, PS3, PCL5 or PCL6.
  • step (1) when the core module that generates the anti-copy shading function is called in the printer driver to generate digital watermark data, the gray value information of the background area is retained in the GUI of the copy-proof shading function module, and the mark is retained.
  • the gray value information of the word area is lost; or the gray value information of the background area is lost, and the gray value information of the mark word area is retained.
  • the page description file processor in the printer supports interpretation of page description files with different number of nets.
  • the effect of the invention is that: by using the method of the invention, the security document with the anti-copy security shading is printed on the plain paper, and the arrangement of the anti-copy shading characters can be freely set by the invention.
  • the hidden font can be changed arbitrarily, and the printing method is simple and convenient, so that the problems faced by the anti-copying technology in the printing field are well solved.
  • an anti-copying shading is additionally printed on the underside of the confidential document data, the grayscale of the shading is shallow, and the visual effect of the normal document is not hindered; the document with the anti-copy shading is printed.
  • the grayscale of the shading is shallow, and the visual effect of the normal document is not hindered; the document with the anti-copy shading is printed.
  • the gray values in the background area and the marked text area are relatively close, so that the hidden effect of the mark word is ideal, and the hidden information is not found by inadvertently viewing.
  • the document printing method of the present invention has great flexibility, because the printing method is relatively convenient, and the document can be condensed: and the security shading is printed at the same time.
  • the method of the present invention is applicable to any MFP (Mul t ifunct ional Printer) and ordinary printer equipment, and different movements have different requirements for gray values.
  • the document printing method for embedding anti-copying shading proposed by the invention can be applied to plain paper, and the management is convenient.
  • FIG. 1 Schematic diagram of the marked text area in the copy proof
  • FIG. 1 Schematic diagram of the background pattern in the anti-copy shading
  • Figure 3 Schematic diagram of the interference pattern in the anti-copy shading
  • Figure 4 is a partial enlarged view of the copy-proof shading
  • FIG. 5 Schematic diagram of direct printout of copy-proof shading
  • FIG. 7 Figure 5 Schematic diagram of the results after copying on the copier
  • Figure 8 Schematic diagram of simultaneous printout of normal data and anti-copy shading
  • FIG. 9 Figure 8 Schematic diagram of the results after copying on the copier
  • FIG. 10 Schematic diagram of the flow of the present invention
  • the DWM GUI Digital Watermark GUI
  • the printer driver GUI through the corresponding command button
  • the GUI of the anti-copy shading function module through the user interface.
  • this embodiment selects a set of curves arranged by sinusoidal lines
  • (9) Set the gradation level of the copy-protected shading to 3.
  • the print driver calls the digital watermark core module Digital Watermark Core, which generates the anti-copy shading.
  • the printer driver transmits the above technical parameters to the Digital Watermark Core module through the corresponding interface function, Digi tal Watermark Core module. It is responsible for generating digital watermark data containing anti-copy shading, and saving the data on the hard disk in the page description file format, ie, PS format.
  • the beginning of the PS file contains a line of descriptive strings. After the string, another identifier character is inserted, such as "OxOA”.
  • the normal digital watermark data is appended to "OxOA", and the absolute path name of the digital watermark data file is also added. Return to the printer driver.
  • FIG. 5 The overall effect of the anti-copy shading generated by the Digi tal Watermark Core module is shown in Figure 5.
  • Figure 4 is a partially enlarged schematic view of Figure 5.
  • the mark pattern of the anti-copy shading is shown in Figure 1.
  • the schematic diagram shows that the marker pattern is composed of small dots of 45 degree angle;
  • the background pattern of the anti-copy shading is shown in Figure 2, and the background pattern is composed of large dots of 45 degree angle;
  • Figure 3 is anti-copying Interference patterns in the shading, there are many patterns of interference patterns, which are used to interfere with human vision.
  • the marker word is embedded in a large area of the background area, and the interference pattern can attract the attention of the human eye, so that the marker word is hidden better.
  • the gray value of the background area and the mark word area are exactly the same, so it is difficult for the human eye to find the warning mark word with the word "copy prohibited” in FIG. 5 without careful observation.
  • the dot area in the background area and the mark word area are different, and the copying machine has different ability to sample the two areas.
  • most of the gray value information in the marked word area is lost, thereby presenting a blank area; most of the gray value information of the background area is retained, and the warning image of "copy prohibited" appears. 5
  • the effect of copying on the copier is shown in Figure 7, so that the copy and original can be easily identified. If the constituent dots of the background pattern are smaller than the dots in the mark word pattern, the effect after copying is reversed, that is, most of the gray value information of the background region is lost, and most of the gray value information in the mark word region is retained.
  • the printer driver After the printer driver receives the path name of the digital watermark file returned by Digi tal Watermark Core, it enters the process of combining the normal document data file with the digital watermark file:
  • the printer intercepts the PS file transmitted by the front-end editing software, as shown in Figure 6;
  • the printer driver combines the PS file data of the normal document with the data of the digital watermark PS file to generate a new PS file, wherein the data of the digital watermark file is appended to the end of the normal document data.
  • the printer driver passes the merged PS file to the Rip (Ras ter Image processor), which prints the built-in raster image processor, where Rip has the ability to process PS files that support different numbers of linked nets.
  • the Rip processed rasterized data is sent to the final printout device.
  • simultaneous printing of normal document data and digital watermark data can be conveniently realized, the printing speed is relatively fast, and various attributes of the tag word can be flexibly modified during the printing process.
  • the method is suitable for printing plain paper, and the cost is relatively low, so that the user's demand is well satisfied.
  • FIG 10 is a schematic overall flow diagram of the present invention. The above steps are only a preferred embodiment. Other implementations will be readily apparent to those skilled in the art without departing from the general inventive concept.
  • the interference pattern in the anti-copy shading can be designed in any pattern.
  • the mark words in the anti-copy shading can be replaced by other security graphics, company logo images, and personal signatures.
  • the core module that generates the anti-copy shading function generates digital watermark data that can be saved into other page description languages (PDL), such as PCL5 or PCL6.
  • PDL page description languages
  • the normal data and the digital watermark data may have different combinations, for example, the digital watermark data is stored in the memory of the computer in the form of a page description language data stream, and then merged with the normal document data stream described by the page description language, and simultaneously Printout.
  • the anti-copying shading can be divided into different areas, and different markings and gray value information are set in each area, so that different effects can be obtained, and at the same time, due to the difference of the gray value information, the copying can be well adapted to different copying.
  • Ink setting When the copier's ink level is set too large or too small, the effect in some areas may be invalid, but the effect may be ideal in other areas.

Landscapes

  • Editing Of Facsimile Originals (AREA)

Abstract

L'invention se rapporte à un procédé d'impression pour document sécurisé comportant un ombrage intégré de prévention de copie. Les dispositifs conformes à l'art antérieur de la technique ont recours à un papier spécial onéreux d'impression à ombrage empêchant la copie et toute liberté de conception de l'ombrage sécurisé de prévention de copie est faible. L'invention intègre le module d'un ombrage sécurisé de prévention de copie dans le dispositif pilote de l'imprimante. Le module transfère des paramètres vers le dispositif pilote de l'imprimante grâce à une fonction commune. Puis le programme pilote d'imprimante transfère le module de fonction correspondant afin de créer les données de filigrane numérique, qui contient l'ombrage sécurisé de prévention de copie et sauvegarde les données sur le document descriptif de page. Il fusionne les données du document normal d'impression et du document à filigrane numérique afin de créer un nouveau document et une nouvelle impression. Le procédé de l'invention permet de mettre en oeuvre l'impression au même instant de l'ombrage sécurisé de prévention de copie et les données normales du document. Le procédé est applicable pour du papier normal et il améliore la liberté de conception d'un ombrage sécurisé de prévention de copie.
PCT/CN2006/000853 2005-06-13 2006-04-29 Procede d'impression pour document securise avec ombrage integre de prevention de copie WO2006133615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510076696.7 2005-06-13
CNB2005100766967A CN100391745C (zh) 2005-06-13 2005-06-13 一种内嵌防复印底纹的安全文档的打印方法

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Publication Number Publication Date
WO2006133615A1 true WO2006133615A1 (fr) 2006-12-21

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CN104200745A (zh) * 2014-08-07 2014-12-10 杭州豪波印务有限公司 一种巡检报告表及其生成方法和防伪方法

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CN101882059B (zh) * 2009-05-05 2014-07-02 山东新北洋信息技术股份有限公司 一种水印打印控制处理方法及装置
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CN102681976B (zh) * 2012-05-11 2015-07-01 珠海赛纳打印科技股份有限公司 文档形成方法、一致性判断方法及系统、成像设备及系统
CN102704350B (zh) * 2012-05-29 2015-05-20 金红叶纸业集团有限公司 防复印纸及其制作方法
CN105959509B (zh) * 2016-04-26 2019-01-04 中国银行股份有限公司 复印的同时自动加水印的方法及装置
CN106503497B (zh) * 2016-10-21 2019-06-21 国网黑龙江省电力有限公司信息通信公司 基于噪点的防泄密方法及防泄密模块
CN106708449B (zh) * 2016-12-31 2019-12-17 金航数码科技有限责任公司 一种单色打印中基于负色图像水印的防复印方法
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CN111598763B (zh) * 2020-04-28 2023-06-02 南京新智客信息科技有限公司 一种基于手机和图像增强的暗记水印提取方法及系统
CN111597517B (zh) * 2020-04-28 2023-04-14 南京新智客信息科技有限公司 一种基于图像置乱的文档防复制方法及系统
CN113408684A (zh) * 2021-06-15 2021-09-17 福建正孚软件有限公司 一种基于标识的文件防伪方法和系统

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CN102019800B (zh) * 2009-09-09 2013-10-16 东莞东运机械制造有限公司 电子雕刻机
CN104200745A (zh) * 2014-08-07 2014-12-10 杭州豪波印务有限公司 一种巡检报告表及其生成方法和防伪方法

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