CN110728900A - Environment-friendly packaging bag with variable data information hiding function - Google Patents
Environment-friendly packaging bag with variable data information hiding function Download PDFInfo
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- CN110728900A CN110728900A CN201911039773.XA CN201911039773A CN110728900A CN 110728900 A CN110728900 A CN 110728900A CN 201911039773 A CN201911039773 A CN 201911039773A CN 110728900 A CN110728900 A CN 110728900A
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 33
- 238000007639 printing Methods 0.000 claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000005034 decoration Methods 0.000 claims abstract description 13
- 238000013329 compounding Methods 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 12
- 230000007547 defect Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- 238000007646 gravure printing Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000009795 derivation Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 229920002799 BoPET Polymers 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/004—Information or decoration elements, e.g. level indicators, detachable tabs or coupons
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
The invention discloses an environment-friendly packaging bag with variable data information hiding function, which comprises a bag body and variable data hiding information arranged on the bag body, wherein the manufacturing method of the packaging bag comprises the following steps: s1 design files; outputting the S2 file; s3 printing decoration patterns; s4 hidden information printing; s5 compounding; s6 slitting and bag making; s7, an unlocking tool is produced. The variable data hidden information output speed is greatly improved by manufacturing the information hidden fonts, the data finally called by the variable data printing equipment are only the information hidden fonts and the information in the variable data file, the size of the storage space of the variable data hidden information is greatly reduced, each packaging bag is endowed with unique and hidden coded information, the hidden information can be seen only under the extraction of a corresponding unlocking tool, and the anti-counterfeiting performance of the packaging bag is greatly improved.
Description
Technical Field
The invention relates to the technical field of anti-counterfeiting packages, in particular to an environment-friendly packaging bag with variable data information hiding function.
Background
With the increasing demand of flexible packages year by year, the anti-counterfeiting demand of flexible packages is also increasing. The prior soft package anti-counterfeiting technology mainly comprises prepress anti-counterfeiting, ink anti-counterfeiting and information anti-counterfeiting, and the information anti-counterfeiting is the most used. The most common information is anti-counterfeiting, namely the collocation of the variable data two-dimensional code and the digital code, the two-dimensional code is sprayed and printed on the surface of the packaging bag, the corresponding digital code is usually sprayed and printed on the inner side of the packaging bag to play a role of hiding, but the digital code at the present stage is usually a clear code, namely, the information such as numbers, letters or the combination of the numbers and the letters can be seen by naked eyes, the anti-counterfeiting performance is not high, the hiding of the variable data information is realized through an information hiding technology, and the anti-counterfeiting performance of the packaging is greatly improved.
In the prior art, a mode for hiding variable data information is to manufacture an information hiding template through professional anti-counterfeiting software, associate process sequence control with the variable data information, hide all variable data in the template manufactured by the anti-counterfeiting software through the anti-counterfeiting software, and keep all data exported one by one into printed files in a picture format, a PDF format and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the environment-friendly packaging bag with the variable data information hiding function, further improves the anti-counterfeiting performance of the packaging bag by hiding the variable data, and also provides an information hiding font and a manufacturing method of the information hiding font for realizing the hiding of the variable data so as to quickly realize the output of the variable mathematical hidden information and reduce the storage space.
In order to achieve the purpose, the invention adopts the following technical scheme:
an environment-friendly packaging bag with variable data information hiding function comprises a bag body and variable data hiding information arranged on the bag body, wherein the bag body is made of a multilayer composite film through a bag making machine, and decoration patterns are printed on the bag body; the variable data hidden information is printed on the outer side of the bag body or the inner side of the bag body through a variable data printing process, cannot be directly observed or identified through naked eyes, and only needs a special unlocking tool to identify the hidden specific information;
the manufacturing method of the packaging bag specifically comprises the following steps:
s1 design file: designing decoration patterns and variable data hidden information content, size and selected font size according to the requirement of packaging effect;
and S2 file output: outputting the decoration pattern designed in the step S1 as a printing plate of a gravure printing machine, outputting the variable data hidden information as a file format which can be identified by variable data printing equipment and storing the file format;
s3 printing decorative pattern: printing the packaging decoration pattern on the surface base film layer by adopting a multicolor gravure printing machine, and drying;
s4 hidden information printing: copying the stored information hiding fonts and the variable data information files kept in the step S2 into a variable data printing device control system, opening variable data printing control software, importing data to be printed in the variable data information files, setting the positions and font sizes of the information to be printed in an operation interface of the variable data printing control software, selecting information hiding font association, starting variable data printing devices to perform trial printing on the surface base film layer printed in the step S3, and when the variable data hiding information subjected to trial printing meets the requirements, performing normal printing until all the variable data to be printed are printed;
s5 compounding: on a multilayer compounding device, compounding and molding the surface base film layer, the middle layer and the inner base film layer which are finished in the step S4 from top to bottom;
s6 slitting and bag making: cutting the composite film finished in the step S5 according to size, and finishing bag making work on a bag making machine to obtain the packaging bag;
s7, manufacturing an unlocking tool: and manufacturing an unlocking tool corresponding to the period T according to the final printing effect.
Further, the hidden information printing in step S4 may be to compile a plain code corresponding to each other according to the information to be hidden, where the plain code may be one of a digital code, a barcode, or a two-dimensional code, and is digitally printed together with the hidden information, so as to facilitate selective inspection of whether the data is wrong at a later stage.
Further, the unlocking tool manufactured in the step S7 can directly print the line file of the unlocking tool with the period T on the packaging bag in a mode of printing transparent gloss oil, and the unlocking and the extraction of the hidden information can be completed without configuring an additional unlocking tool by combining the structural design of the packaging bag.
In order to hide the variable data information and reduce the size of the storage space occupied by the data file, the invention provides an information hiding font, wherein the information hiding font is formed by arraying a plurality of vector graphics with the same size into a rectangle according to an arrangement period T, specific information of the information hiding font cannot be seen by naked eyes in appearance, and the specific hidden information can be seen by the naked eyes only through an unlocking tool with the same arrangement period T.
Further, the vector graphics are one of circles, rings, ellipses and polygons.
Further, the polygon is one of a regular polygon (regular triangle, square, etc.) and a scalene polygon.
Further, the width w and the height h of the vector graphics should satisfy: w is more than or equal to 0.05 and less than or equal to 0.12mm, and h is more than or equal to 0.05 and less than or equal to 0.12 mm.
Further, the arrangement period T of the vector graphics should satisfy: t is more than or equal to 0.15 and less than or equal to 0.3 mm.
Further, the unlocking tool is one of a linear group diaphragm, a film and a grating with an arrangement period of T.
In order to realize the information hiding font of the invention, the invention also provides a method for manufacturing the information hiding font, which specifically comprises the following steps:
s1, font master mask making: newly building a file in vector graph drawing software, drawing a vector graph in a file panel, and then selecting the vector graph to arrange rectangular dot matrix groups in the file panel according to an arrangement period T to obtain a font mother board;
s2 information hiding and storing: in the font master plate drawn in the step S1, information such as ten numbers 0 to 9, twenty-six capital letters a to Z, twenty-six lowercase letters a to Z, a plurality of common Chinese characters and graphics are hidden in the font master plate one by a phase modulation method, and each hidden character or graphic is kept as an eps format vector file, and the file is named as a corresponding character or graphic name;
and importing font information of S3: opening font editing software, directly opening an existing font file on a font editing software interface, clicking characters in the font, deleting original character and graphic information, importing the file corresponding to the characters in the file stored in the step S2 into the character interface and centering the file, and storing the font file after finishing all the characters to be replaced and the graphic file;
s4 font derivation: after information such as font names, font applicable systems, font formats and the like is set in font editing software, font information is exported to obtain the information hidden fonts of the invention;
test S5: leading the led-out information hiding fonts into a design computer system and a variable data printing equipment system, testing whether display and output information of the information hiding fonts in the two systems are normal or not, and whether the display and output information of the information hiding fonts correspond to actual characters one by one or not, outputting the information hiding fonts with different font sizes through the variable data printing equipment, observing whether the reproduction condition of a vector graph in each output character is good or bad, and recording each defect;
and S6, correction: modifying in font editing software according to the test result of the step S5, repeating the steps S4 to S6 until the derived information hiding font has no defect, and selecting the size record with the best effect according to the printing effect of the variable data printing equipment for reservation;
s7, deriving the final information hiding font for use.
Further, the array arrangement in step S1 is an orthogonal arrangement.
Further, in step S2, information is hidden in the font master by a phase modulation method, and two different information can be hidden at the same position in the font master according to the characteristics of the orthogonally arranged dot matrix.
The invention has the beneficial effects that:
the variable data hidden information output speed is greatly improved by manufacturing the information hidden fonts, the data finally called by the variable data printing equipment are only the information hidden fonts and the information in the variable data file, the size of the storage space of the variable data hidden information is greatly reduced, each packaging bag is endowed with unique and hidden coded information, the hidden information can be seen only under the extraction of a corresponding unlocking tool, and the anti-counterfeiting performance of the packaging bag is greatly improved.
Drawings
FIG. 1 is a schematic view of an environment-friendly packaging bag with variable data information hiding according to the present invention;
FIG. 2 is a schematic diagram of the shape, size, arrangement pitch and array effect of the vector graphics of the present invention;
FIG. 3 is a schematic diagram of a font master of the present invention;
FIG. 4 is a schematic diagram of phase modulation according to the present invention;
FIG. 5 is a schematic diagram of a font master with a hidden letter A by phase modulation according to the present invention;
an unlocking tool file effect schematic diagram;
FIG. 6 is a schematic diagram illustrating the effect of the letter A extracted by the unlocking tool on the font master plate hidden with the letter A according to the present invention;
FIG. 7 is a schematic diagram of the shape, size, arrangement pitch and array effect of the vector graphics of the present invention;
FIG. 8 is a diagram illustrating an information hiding font effect of the present invention hiding six-bit data information of "D05261";
fig. 9 illustrates the information hiding font unlocking and information extracting effect of hiding the six-bit data information of "D05261" according to the present invention.
In the figure: 1. vector graphics, 2. vector graphics after phase modulation, 3. array grid, 4. bag body, 5. self-sealing strip, and 6. variable data information hiding.
Detailed Description
The drawings are only for illustrative purposes and are not to be construed as limiting the patent, and the technical scheme of the invention is further described in the following with reference to the drawings and the embodiment.
As shown in fig. 1, an environment-friendly packaging bag with variable data information hiding function comprises a bag body 4 and variable data hiding information 6 arranged on the bag body, wherein the bag body 4 is made of a multilayer composite film through a bag making machine, and decoration patterns are printed on the bag body 4; the variable data hidden information 6 is printed on the outer side of the bag body 4 or the inner side of the bag body through a variable data printing process, the variable data hidden information 6 cannot be directly observed or identified through naked eyes, and the hidden specific information can be identified only by means of a special unlocking tool;
the manufacturing method of the packaging bag specifically comprises the following steps:
s1 design file: designing decoration patterns and variable data hidden information content, size and selected font size according to the requirement of packaging effect;
and S2 file output: outputting the decoration pattern designed in the step S1 as a printing plate of a gravure printing press, outputting the variable data hidden information 6 as a file format which can be recognized by a variable data printing device, and storing the file format;
s3 printing decorative pattern: printing the packaging decoration pattern on the surface base film layer by adopting a multicolor gravure printing machine, and drying;
s4 hidden information printing: copying the stored information hiding fonts and the variable data information files kept in the step S2 into a variable data printing device control system, opening variable data printing control software, importing data to be printed in the variable data information files, setting the positions and font sizes of the information to be printed in an operation interface of the variable data printing control software, selecting information hiding font association, starting variable data printing devices to perform trial printing on the surface base film layer printed in the step S3, and performing normal printing until all the variable data to be printed are printed after the variable data hiding information 6 subjected to trial printing meets the requirements;
s5 compounding: on a multilayer compounding device, compounding and molding the surface base film layer, the middle layer and the inner base film layer which are finished in the step S4 from top to bottom;
s6 slitting and bag making: cutting the composite film finished in the step S5 according to size, and finishing bag making work on a bag making machine to obtain the packaging bag;
s7, manufacturing an unlocking tool: and manufacturing an unlocking tool corresponding to the period T according to the final printing effect.
In this example, a decorative pattern was printed on a 50um thick PET film and dried, and then the final information hiding font "ArialKS" font was copied to the control system of the variable data printing apparatus, the manufactured variable data information file is introduced into the variable data printing control software, the position and the font size of the information to be printed are set in the hidden area of the variable data information 6 of the packaging bag, the font size is 12pt, and the variable data hiding information is printed on the PET film with the thickness of 50um printed with the decoration pattern by associating the information hiding font ArialKS, after the variable data hiding information 6 is printed, compounding the aluminum foil layer with the thickness of 30um and the PE film with the thickness of 60um on a multilayer compounding device, then slitting and making bags on a bag making machine, and (3) adhering a self-sealing strip 5 to the bag body of the bag body 4, and die-cutting to remove redundant rim charge to obtain the environment-friendly packaging bag body 4 with the variable data hidden information 6.
As shown in fig. 2 to 7, an information hiding font is formed by arraying a plurality of vector graphics 1 having the same size according to an arrangement period T, and a specific font of the information hiding font cannot be seen by naked eyes in appearance, and only by observing through an unlocking tool having the same arrangement period T, the specific font can be seen by naked eyes.
A method for manufacturing an information hiding font specifically comprises the following steps:
s1, font master mask making: newly building a file in vector graph drawing software, drawing a vector graph 1 in a file panel, and then selecting the vector graph 1 to arrange rectangular dot matrix groups in the file panel according to an arrangement period T to obtain a font mother board;
s2 information hiding and storing: in the font master plate drawn in the step S1, information such as ten numbers 0 to 9, twenty-six capital letters a to Z, twenty-six lowercase letters a to Z, a plurality of common Chinese characters and graphics are hidden in the font master plate one by a phase modulation method, and each hidden character or graphic is kept as an eps format vector file, and the file is named as a corresponding character or graphic name;
and importing font information of S3: opening font editing software, directly opening an existing font file on a font editing software interface, clicking characters in the font, deleting original character and graphic information, importing the file corresponding to the characters in the file stored in the step S2 into the character interface and centering the file, and storing the font file after finishing all the characters to be replaced and the graphic file;
s4 font derivation: after information such as font names, font applicable systems, font formats and the like is set in font editing software, font information is exported to obtain the information hidden fonts of the invention;
test S5: importing the exported information hiding fonts into a design computer system and a variable data printing equipment system, testing whether display and output information of the information hiding fonts in the two systems are normal or not and whether the display and output information of the information hiding fonts are in one-to-one correspondence with actual characters or not, outputting the information hiding fonts with different font sizes through the variable data printing equipment, observing whether the reproduction condition of a vector graph 1 in each output character is good or bad, and recording each defect;
and S6, correction: modifying in font editing software according to the test result of the step S5, repeating the steps S4 to S6 until the derived information hiding font has no defect, and selecting the size record with the best effect according to the printing effect of the variable data printing equipment for reservation;
s7, deriving the final information hiding font for use.
In this embodiment, as shown in fig. 2, in the illustrator vector drawing software, a circle is used as a vector graphic 1, the vector graphic 1 has a width w =0.08mm, a height h =0.08mm, and an arrangement period T =0.2mm, and the font master file shown in fig. 3 is obtained by orthogonal arrangement.
In this embodiment, a letter a is selected as an example of information to be hidden, as shown in fig. 4, a vector graphics 1 array in a font master is modulated according to an outline of the letter a by a phase modulation method, a position where the vector graphics 1 after phase modulation is located can be clearly seen to be changed through an established array grid 3, upward displacement occurs in a vertical direction, and no displacement occurs in a horizontal direction, the font master hidden with the letter a as shown in fig. 5 is obtained after phase modulation is completed, an outline of the letter a cannot be seen by naked eye observation, an unlocking tool having the same arrangement period is manufactured according to an arrangement period T of the vector graphics 1, as shown in fig. 6, an electronic file effect of the unlocking tool of this embodiment is obtained, and after the unlocking tool shown in fig. 6 is superimposed on the font master hidden with the letter a as shown in fig. 5, an information extraction effect of the letter a as shown in fig. 7 is obtained, and saving the font master plate hidden with the letter A as a file in an eps format and naming the font master plate as 'A'.
Repeating the above operation process, hiding all 26 capital letters A to Z and 10 numbers 0 to 9 in the font master plate, and storing and naming one by one.
In this embodiment, font editing is performed in font editing software, an Arial font file is directly opened on an operation interface of the opened font editing software, an editing interface where a character a in a font is located is clicked, graphic information of an original character a is deleted, an eps file named as "a" stored previously is found, the eps file of "a" is imported into the editing interface of the original character a through an import function and is centered, that is, the graphic file replacement of the character a is completed, and a font master shown in fig. 4 is presented on the editing interface of the character a. Closing an editing interface of the text a, replacing the corresponding text in the Arial font file with the previously stored files named "B" to "Z" and the files named "0" to "9" one by one in the same manner, clicking and saving after completing the replacement, renaming the font to be "Arial ks", and exporting the font file, wherein the format of the derived "Arial ks" font is otf format, and is suitable for a Windows operating system.
Saving the 'arialKS' font in a Fonts folder of a windows system, opening an illedustor vector drawing software, inputting six-bit data information of 'D05261', selecting the 'arialKS' font, obtaining an information hiding font effect shown in figure 8, and displaying the six-bit data information of 'D05261' shown in figure 9 under a corresponding unlocking tool.
After testing the information hiding font in a computer system, copying the ArialKS font into a control system of variable data printing equipment, randomly generating 1000 variable data from S00001 to S01000 with the font size of 8-14pt, and performing printing test, and if no correction is needed after the test is finished, saving the ArialKS font as the finally usable information hiding font.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides an environmental protection wrapping bag with variable data information is hidden, includes that the bag body hides information with the variable data of setting on the bag body, its characterized in that: the bag body is made of a multilayer composite film by a bag making machine, and decorative patterns are printed on the bag body; the variable data hidden information is printed on the outer side of the bag body or the inner side of the bag body through a variable data printing process, cannot be directly observed or identified through naked eyes, and only needs a special unlocking tool to identify the hidden specific information;
the manufacturing method of the packaging bag specifically comprises the following steps:
s1 design file: designing decoration patterns and variable data hidden information content, size and selected font size according to the requirement of packaging effect;
and S2 file output: outputting the decoration pattern designed in the step S1 as a printing plate of a gravure printing machine, outputting the variable data hidden information as a file format which can be identified by variable data printing equipment and storing the file format;
s3 printing decorative pattern: printing the packaging decoration pattern on the surface base film layer by adopting a multicolor gravure printing machine, and drying;
s4 hidden information printing: copying the stored information hiding fonts and the variable data information files kept in the step S2 into a variable data printing device control system, opening variable data printing control software, importing data to be printed in the variable data information files, setting the positions and font sizes of the information to be printed in an operation interface of the variable data printing control software, selecting information hiding font association, starting variable data printing devices to perform trial printing on the surface base film layer printed in the step S3, and when the variable data hiding information subjected to trial printing meets the requirements, performing normal printing until all the variable data to be printed are printed;
s5 compounding: on a multilayer compounding device, compounding and molding the surface base film layer, the middle layer and the inner base film layer which are finished in the step S4 from top to bottom;
s6 slitting and bag making: cutting the composite film finished in the step S5 according to size, and finishing bag making work on a bag making machine to obtain the packaging bag;
s7, manufacturing an unlocking tool: and manufacturing an unlocking tool corresponding to the period T according to the final printing effect.
2. An information hiding font, comprising: the information hiding fonts are formed into rectangles by a plurality of vector graphics with the same size according to an array of an arrangement period T, specific information of the information hiding fonts cannot be seen by naked eyes in appearance, and the specific hidden information can be seen by the naked eyes only through observation of an unlocking tool with the same arrangement period T.
3. The information hiding font according to claim 2, wherein: the vector graph is one of a circle, a ring, an ellipse and a polygon.
4. The information hiding font according to claim 2, wherein: the width w and the height h of the vector graphics should satisfy: w is more than or equal to 0.05 and less than or equal to 0.12mm, and h is more than or equal to 0.05 and less than or equal to 0.12 mm.
5. The information hiding font according to claim 2, wherein: the arrangement period T of the vector graphics satisfies the following conditions: t is more than or equal to 0.15 and less than or equal to 0.3 mm.
6. A method for making an information hiding font is characterized in that: the method specifically comprises the following steps of,
s1, font master mask making: newly building a file in vector graph drawing software, drawing a vector graph in a file panel, and then selecting the vector graph to arrange rectangular dot matrix groups in the file panel according to an arrangement period T to obtain a font mother board;
s2 information hiding and storing: in the font master plate drawn in the step S1, information such as ten numbers 0 to 9, twenty-six capital letters a to Z, twenty-six lowercase letters a to Z, a plurality of common Chinese characters and graphics are hidden in the font master plate one by a phase modulation method, and each hidden character or graphic is kept as an eps format vector file, and the file is named as a corresponding character or graphic name;
and importing font information of S3: opening font editing software, directly opening an existing font file on a font editing software interface, clicking characters in the font, deleting original character and graphic information, importing the file corresponding to the characters in the file stored in the step S2 into the character interface and centering the file, and storing the font file after finishing all the characters to be replaced and the graphic file;
s4 font derivation: after information such as font names, font applicable systems, font formats and the like is set in font editing software, font information is exported to obtain the information hidden fonts of the invention;
test S5: leading the led-out information hiding fonts into a design computer system and a variable data printing equipment system, testing whether display and output information of the information hiding fonts in the two systems are normal or not, and whether the display and output information of the information hiding fonts correspond to actual characters one by one or not, outputting the information hiding fonts with different font sizes through the variable data printing equipment, observing whether the reproduction condition of a vector graph in each output character is good or bad, and recording each defect;
and S6, correction: modifying in font editing software according to the test result of the step S5, repeating the steps S4 to S6 until the derived information hiding font has no defect, and selecting the size record with the best effect according to the printing effect of the variable data printing equipment for reservation;
s7, deriving the final information hiding font for use.
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