CN101954803B - Multi-directional variable light grain rainbow image and manufacturing method thereof - Google Patents
Multi-directional variable light grain rainbow image and manufacturing method thereof Download PDFInfo
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- CN101954803B CN101954803B CN200910198244.4A CN200910198244A CN101954803B CN 101954803 B CN101954803 B CN 101954803B CN 200910198244 A CN200910198244 A CN 200910198244A CN 101954803 B CN101954803 B CN 101954803B
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Abstract
The invention discloses a multi-directional variable light grain rainbow image and a manufacturing method thereof. The rainbow image comprises at least one print layer, wherein the single print layer is printed with different inks and the inks used on each layer are the inks having the same colour as visible lights. The manufacturing method comprises the following steps of: printing a layer of grain with different visible light colours by using different inks on a product, wherein the visible light colours are a, b and c colours; and then printing the other layers in different printing ways by overprinting, wherein the inks adopted by each layer are the inks with the same visible light colour or different visible light colours, namely a, b and c colours or other colours, so that light interference effect is generated through different line grain widths and angles and new vision characteristic is generated. The rainbow image has the effect of resisting counterfeiting and copying.
Description
Technical field
The present invention relates to anti-counterfeiting image and preparation method in printing technology, relate in particular to a kind of rainbow image that utilizes multiple mode of printing making multi-way changing light line and preparation method thereof.
Background technology
As light escutcheon brush category or multi-sheet printed field, once adopted conduction, reflection with lines model different directions; The reflecting effect that the metallograph thermoprint produces; The means such as high reflectance ink that metal oxide is made embody the visible iris color effect of a kind of vision, belong to single kind of technology produce an effect, do not relate to the resultant effect of printing ink, design version line, printed layers stack generation, are not used at printing technology.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide the rainbow image of the good multi-way changing light line of a kind of antifalse effect.
Another object of the present invention is to provide the preparation method of this rainbow image.
The technical scheme that realizes the object of the invention is as follows:
The physical principle that the present invention utilizes is diffraction of light and interference.The different color combination is mixed other colors just be called " colour mixture ".The light of different color mixes and will become bright, will become water white white light if institute's the colorful one light mixes, and this also is the additive color colour mixture or claims the coloured light colour mixture.On the other hand, will become gloomy dead colour if the printing ink of different color mixes, this also is subtractive mixture of colours or claims the colorant colour mixture.Light that printing ink reflects is through diffraction, if be projected on the retina of human eye, the phenomenon that occurs just is equivalent to the neutral gear place of human eye by gravure printing face figure line and observes the undertake the printing of situation on plane of offset printing face and printing.
A kind of multi-directional variable light grain rainbow image picture, the printed layers that comprises at least two layers produces diffraction of light, it is characterized in that: described each printed layers is printed with different printing ink, and the printing ink that each printed layers all adopts is by the identical or different printing ink of chromatography printed layers visible light colors with upper one;
Described printed layers is gravure printing figure lamina and offset printing figure lamina.Gravure printing figure lamina is positioned at top layer, and offset printing figure lamina is positioned at bottom.
The live width of described gravure printing figure line is the 0.02-0.5 millimeter, and the width of neutral is the 0.02-0.5 millimeter, and the angle of gravure printing figure line and offset printing figure line is the 0-360 degree.
The width d of described gravure printing layer figure line neutral depends on the wavelength X of the ink colors that the offset printing layer is selected, and is required to be the integral multiple of λ/2, i.e. d=n λ/2.
The live width of described offset printing figure line is the 0.02-0.5 millimeter, and the neutral width is the 0.025-0.5 millimeter, and wide and width value neutral of figure streakline depends on the wavelength of offset ink color, and the angle of gravure printing figure line and offset printing line face angle is the 0-360 degree.
Wide and the gravure printing layer figure line neutral of gravure printing layer figure streakline all is not more than 2 times of offset printing live widths and 1 times of wide sum of offset printing neutral.
Form gravure figure line by n gravure figure line construction unit, form offset printing figure line by n offset printing figure line construction unit.
Gravure figure line solid colour, therefore the frequency at the n row light wave that passes through neutral is identical, phasic difference is constant, direction of vibration is consistent, mutual superposition when meet in the stock interface is strengthened all the time in some zone, weakens all the time in other zones, form the phenomenon of stable strength distribution, namely stablize interference.Utilize and to stablize principle of interference, owing to having different live widths, neutral gear and line face angle between each printed image, and then realize the hidden image effect of initial setting.(this hidden image is the image that finally is projected on the human eye retina, is not in esse in offset printing figure line and gravure figure line, therefore has very strong false proof anti-print effect)
A kind of preparation method of multi-directional variable light grain rainbow image picture comprises the steps:
1) printing ink with different colours first prints the different figure line of one deck visible light colors on paper; The live width of described dimensional printed chart line and the width of neutral are the 0.02-0.5 millimeter;
2) adopt the different printing mode to carry out the chromatography printing, the printing ink that each printed layers all adopts is by the identical or different printing ink of chromatography printed layers visible light colors with upper one again; The live width of described dimensional printed chart line is the 0.02-0.5 millimeter, and the neutral width is the 0.025-0.5 millimeter, and the angle of the figure line line face angle of two kinds of printings is the 0-360 degree;
Described 1) the wide and figure line neutral of step printed layers figure streakline all is not more than 2 times of steps 2) printed layers figure streakline wide with 1 times of wide sum of neutral;
3) image of the different printing mode different aspects of printing disturbs because the interference of light phenomenon produces, and moire fringes occurred, has different live widths, pitch and line face angle between each printed image, and then realizes the hidden image effect of initial setting.
Described mode of printing is gravure printing and offset printing.
The rainbow figure that the present invention makes, what should occur is the situation that two dimensional printed chart laminas intersect, but owing to having produced stable interference, hidden image structure such as the twill image in earlier stage set have therefore occurred, visually observed, scan, take pictures and all only can find the twill image.Because the gravure printing face has hidden part offset printing face, and this twill image needs offset printing figure line and common cooperation of gravure printing figure line could be realized this stable interference, is difficult to copying and forging, so has very strong false proof anti-print effect.
Description of drawings
Fig. 1 is fresnel zone method key diagram.
Fig. 2 is the schematic diagram that each viewing angle of the present invention is observed multi-way changing light line figure.
Fig. 3 is the schematic diagram of each printed layers of the present invention figure.
Fig. 4 is each printed layers Overlay of the present invention figure.
The specific embodiment
How further illustrate the present invention below in conjunction with accompanying drawing 1-Fig. 4 realizes.
As shown in Figure 1, slit a is as Source of Wavelets, wavelet is met on the focal plane of L and is interfered, directional light is focused on the focal plane of L. and the light that is parallel to primary optical axis is focused at the O point, the light that is parallel to secondary optical axis converges at P point (intersection point of secondary optical axis and focal plane), between A → P and B → P, optical path difference is arranged, and each wavelet is identical at O point light path, therefore the O point is bright fringes (central bright fringe), therefore produced light and dark striped.
The plane of the plane of slit a, lens L, PO face are as three different three-dimensional aspects, and wherein the pO face is considered as printing stock with it, can be paper or other stocks; The plane of slit a, lens L is the printed layers of different levels, therefore needs at least the printed layers more than two layers could produce diffraction of light, and the plane of lens L is considered as the gravure printing layer with the plane that it is considered as offset printing layer, slit a with it.
The generation of slit a is through particular design due to dimensional printed chart line when designing the gravure forme, its figure line has different live widths (0.02-1 millimeter), neutral is that (width is the 0.02-0.5 millimeter to slit a, the wavelength that specifically depends on the offset ink color, attached after computing formula) and line face angle (with the angle of L planographic figure line, 0-360 degree).(the AaB plane is made of a neutral, AB two solid lines, and we are with an AaB plane construction unit as gravure figure line)
The plane is the offset printing layer, the dimensional printed chart line is through particular design when the design offset printing forme, its figure line has different live widths (0.02-0.5 millimeter), the neutral width is the wavelength that the 0.025-0.5 millimeter specifically depends on the offset ink color, attached after computing formula) and line face angle (with the angle of L planographic figure line, 0-360 degree).
Wide and the gravure printing layer figure line neutral of gravure printing layer figure streakline all can not wide greater than 2 times of offset printing live width+1 times offset printing neutral (construction unit that is called offset printing figure line), i.e. 2 aspects such as overlapping can not occur all in the arbitrfary point that gravure printing figure streakline hides an offset printing unit or (slit is observed the offset printing construction unit more than 1 a) from neutral.
The width d of slit a depends on the wavelength X of the ink colors that the offset printing layer is selected, and is required to be the integral multiple of λ/2, i.e. d=n λ/2;
Form gravure figure line by n gravure figure line construction unit, form offset printing figure line by n offset printing figure line construction unit.
Gravure figure line solid colour, therefore the frequency at the n row light wave that passes through slit a is identical, phasic difference is constant, direction of vibration is consistent, mutual superposition when meet in the stock interface is strengthened all the time in some zone, weakens all the time in other zones, form the phenomenon of stable strength distribution, namely stablize interference.
Utilize and to stablize principle of interference, owing to having different live widths, neutral gear and line face angle between each printed image, and then realize the hidden image effect of initial setting.This hidden image is the image that finally is projected on the human eye retina, is not in esse in offset printing figure line and gravure figure line, therefore has very strong false proof anti-print effect.
As shown in Figure 3, different printed layers adopts the identical or different printing ink of visible light colors to print, and its dimensional printed chart line carried out design in advance, had different live widths, pitch and line face angle.As shown in Figure 4, after different printing figure lamina is carried out the chromatography printing, mode according to Fig. 2 is observed, because the figure line of different printing figure lamina has different live widths, pitch and line face angle, and the figure line that cover is imprinted on has certain printed layers height, utilize the interference of light principle, therefore can observe a kind of rainbow image of multi-way changing light line when different angles are observed.
The preparation method of this multi-directional variable light grain rainbow image picture comprises the steps:
1), first print the different figure line of one deck visible light colors with different printing ink on product, visible light colors is a, b, c;
2) adopt, again the different printing mode to carry out chromatography and print other each layers, the printing ink that each printed layers adopts is the identical printing ink of visible light colors, namely adopts a, b, c color.Therefore produce the identical effect that possesses simultaneously different refractivity of visible light colors in the different printing aspect;
The present invention's image different from the past adopts single mode of printing to print, and the present invention adopts different mode of printings to carry out the chromatography printing; Although printing ink is because different its kinds of mode of printing are different, its visible light colors is consistent under the different printing mode; Through the version line of design, by the stack of different printing layer, due to the difference of pitch and angle, can produce uniform stack version line pattern; 2 and the combination of 3, can produce with different viewing angles, observe different multi-way changing light line patterns; Can produce hidden image by stack, reach certain false proof, anti-print effect; The visible light colors of implicit pattern in the past can only be a kind of, and by the present invention, if any implicit pattern, this implicit pattern color can be colour;
Claims (6)
1. multi-directional variable light grain rainbow image picture, the printed layers that comprises at least two layers produces diffraction of light, it is characterized in that: described each printed layers is printed with different printing ink, and the printing ink that each printed layers adopts is by the identical or different printing ink of chromatography printed layers visible light colors with upper one; Described printed layers is gravure printing figure lamina and offset printing figure lamina, gravure printing figure lamina is positioned at top layer, offset printing figure lamina is positioned at bottom, the live width of described gravure printing figure line and the width of neutral are the 0.02-0.5 millimeter, the live width of described offset printing figure line is 0.02-0.5 millimeter, the neutral width is 0.025-0.5 millimeter, and the angle of gravure printing figure line and offset printing line face angle is the 0-360 degree; Wide and the gravure printing layer figure line neutral of described gravure printing layer figure streakline all is not more than 2 times of offset printing live widths and 1 times of wide sum of offset printing neutral.
2. a kind of multi-directional variable light grain rainbow image picture according to claim 1, it is characterized in that: the width value of described gravure printing figure lamina figure line neutral depends on the color of offset ink.
3. a kind of multi-directional variable light grain rainbow image picture according to claim 1 and 2 is characterized in that: the width d of gravure printing figure lamina figure line neutral depends on and the wavelength X of the ink colors that the offset printing layer is selected is the integral multiple of λ/2, i.e. d=n λ/2.
4. a kind of multi-directional variable light grain rainbow image picture according to claim 1, it is characterized in that: the width value of described offset printing figure line neutral depends on the wavelength of offset ink color.
5. the preparation method of a kind of multi-directional variable light grain rainbow image picture according to claim 1, comprise the steps:
1) printing ink with different colours first prints the different figure line of one deck visible light colors on paper; The live width of described dimensional printed chart line and the width of neutral are the 0.02-0.5 millimeter;
2) adopt the different printing mode to carry out the chromatography printing, the printing ink that each printed layers all adopts is by the identical or different printing ink of chromatography printed layers visible light colors with upper one again; The live width of described dimensional printed chart line is 0.02-0.5 millimeter, and the neutral width is 0.025-0.5 millimeter, and the angle of the figure line line face angle of two kinds of printings is the 0-360 degree;
Described 1) the wide and figure line neutral of step printed layers figure streakline all is not more than 2 times of steps 2) printed layers figure streakline wide with 1 times of wide sum of neutral;
3) image of the different printing mode different aspects of printing disturbs because the interference of light phenomenon produces, and moire fringes occurred, has different live widths, pitch and line face angle between each printed image, and then realizes the hidden image effect of initial setting.
6. the preparation method of a kind of multi-directional variable light grain rainbow image picture according to claim 5, it is characterized in that: described mode of printing is gravure printing and offset printing.
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| CN200910198244.4A CN101954803B (en) | 2009-11-03 | 2009-11-03 | Multi-directional variable light grain rainbow image and manufacturing method thereof |
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| CN101954803B true CN101954803B (en) | 2013-05-08 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103317872B (en) * | 2013-05-13 | 2015-09-30 | 东莞富阳彩印有限公司 | Paper light line typography |
| WO2018024760A1 (en) * | 2016-08-04 | 2018-02-08 | Merck Patent Gmbh | Method for producing an optically variable printed image |
| EP3489029B1 (en) * | 2017-11-27 | 2019-12-25 | KBA-Notasys SA | Printed security element comprising a rainbow feature and method of producing the same |
| CN111251739A (en) * | 2018-12-29 | 2020-06-09 | 任磊 | Security device with variable-coding information |
| CN115091873A (en) * | 2022-06-15 | 2022-09-23 | 云南侨通包装印刷有限公司 | Method for thermoprinting multicolor rainbow gradient pattern effect on paper package |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686852Y (en) * | 2004-01-18 | 2005-03-23 | 吴德明 | Improved stereoscopic image |
| CN101161481A (en) * | 2007-11-22 | 2008-04-16 | 上海印钞厂 | A cryptical readable image and its preparing method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686852Y (en) * | 2004-01-18 | 2005-03-23 | 吴德明 | Improved stereoscopic image |
| CN101161481A (en) * | 2007-11-22 | 2008-04-16 | 上海印钞厂 | A cryptical readable image and its preparing method |
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Address after: 200063 158 Cao Yang Road, Shanghai, Putuo District Patentee after: SHANGHAI BANKNOTE PRINTING Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 200063 158 Cao Yang Road, Shanghai, Putuo District Patentee before: SHANGHAI BANKNOTE PRINTING Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |