CN111645411B - Magnetic orientation device and printing equipment - Google Patents
Magnetic orientation device and printing equipment Download PDFInfo
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- CN111645411B CN111645411B CN202010403322.6A CN202010403322A CN111645411B CN 111645411 B CN111645411 B CN 111645411B CN 202010403322 A CN202010403322 A CN 202010403322A CN 111645411 B CN111645411 B CN 111645411B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2217/00—Printing machines of special types or for particular purposes
- B41P2217/50—Printing presses for particular purposes
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- Mechanical Engineering (AREA)
- Printing Methods (AREA)
Abstract
The application discloses a magnetic orientation device and a printing apparatus. The magnetic orientation device includes a magnet and a magnetically permeable assembly. The magnet is arranged in a way that the neutral surface of the magnet is crossed with the main surface of the printing substrate, the included angle between the neutral surface and the main surface is more than or equal to 60 degrees and less than or equal to 120 degrees, and the main surface is used for coating magnetic ink; the magnetic conduction component is arranged between the side surface of the magnet adjacent to the printing substrate and the printing substrate, wherein the magnetic conduction component partially covers the side surface in the orthographic projection of the side surface, or the magnetic conduction component has height change in the spacing direction of the side surface and the main surface. The magnetic orienting device combined by the magnet and the magnetizer can form a magnetic field for printing the anti-counterfeiting pattern, and the magnetic orienting device is simple in structure.
Description
Technical Field
The application relates to the technical field of magnetic orientation, in particular to a magnetic orientation device and printing equipment.
Background
Today, anti-counterfeiting technology plays a very important role, and the body image of various security documents, currency and the packaging of valuable commodities can be seen on the printing. The market has the technical requirements on anti-counterfeiting, such as easy identification and difficult imitation. The orientation of the magnetic or magnetizable flakes can be controlled by a magnetic field to produce an image which has a very strong security effect and is "easily identifiable and difficult to counterfeit".
However, the method for printing the anti-counterfeiting pattern by the magnetic field is not enough, and the aesthetic property is poor, so that the method cannot meet the increasing demands of the public and the market. And the magnetic orientation device for forming the magnetic field comprises excessive magnets, and has the disadvantages of complex structure, high cost and monotonous effect.
Disclosure of Invention
The magnetic orienting device and the printing equipment are mainly used for forming a magnetic field for printing the anti-counterfeiting pattern through combination of the magnet and the magnetizer, and the magnetic orienting device is simple in structure.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: a magnetic orienting device is provided that includes a magnet and a magnetically permeable assembly.
The magnet is arranged in a way that a neutral surface of the magnet is crossed with the main surface of the printing substrate, an included angle between the neutral surface and the main surface is larger than or equal to 60 degrees and smaller than or equal to 120 degrees, and the main surface is used for coating magnetic ink;
the magnetic conduction component is arranged between the side surface of the magnet adjacent to the printing substrate and the printing substrate, wherein the magnetic conduction component partially covers the side surface in the orthographic projection of the side surface, or the magnetic conduction component has height change in the spacing direction of the side surface and the main surface.
The magnetic conduction assembly comprises at least one strip-shaped magnetizer, an included angle between the axis direction of the strip-shaped magnetizer and the side surface is smaller than 30 degrees or larger than 150 degrees, and the orthographic projection of each strip-shaped magnetizer on the side surface covers the side surface locally.
Wherein, the strip magnetizer is arranged linearly or in a curve.
Wherein, the strip magnetizer is at least two that set up side by side and interval each other sets up on the orthographic projection of side surface.
The strip magnetizers are arranged in a cylindrical shape and are at least two arranged side by side, and orthographic projections of the at least two strip magnetizers on the side surfaces are mutually densely arranged or arranged at intervals.
The orthographic projections of the axial directions of the at least two strip-shaped magnetizers on the side surfaces and the orthographic projections of the magnetic shafts of the magnets on the side surfaces are mutually crossed.
The magnetic conducting component further comprises a plurality of block-shaped magnetic conductors arranged on one side, facing the printing substrate, of the at least two strip-shaped magnetic conductors, each block-shaped magnetic conductor is used for partially covering the side surface in the orthographic projection of the side surface, and the block-shaped magnetic conductors are arranged in close-packed mode or at intervals in the orthographic projection of the side surface.
Wherein cross-sectional areas of at least partial regions of the plurality of block-shaped magnetic conductors in a direction perpendicular to a direction of spacing between the side surfaces and the main surface are gradually reduced in a direction close to the main surface.
The magnets are arranged in a cuboid or fan ring shape and are at least two arranged at intervals, and the strip magnetizer is bridged on the at least two magnets.
The magnetic conduction assembly comprises a plurality of block magnetizers, each block magnetizer partially covers the lateral surface in the orthographic projection of the lateral surface, and the plurality of block magnetizers are arranged in close arrangement or at intervals in the orthographic projection of the lateral surface.
Wherein cross-sectional areas of at least partial regions of the plurality of block-shaped magnetic conductors in a direction perpendicular to a direction of spacing between the side surfaces and the main surface are gradually reduced in a direction toward the main surface.
In order to achieve the purpose, the other technical scheme adopted by the application is as follows: the printing equipment comprises the magnetic orientation device, a printing device, a conveying device and a curing device, wherein the conveying device is used for conveying a printing substrate to pass through the printing device, the magnetic orientation device and the curing device in sequence, the printing device is used for printing magnetic ink on the main surface, the magnetic orientation device is used for carrying out magnetic orientation on the magnetic ink, and the curing device is used for curing the ink after the magnetic orientation.
Compared with the prior art, the beneficial effect of this application is: the neutral plane of the magnet is crossed with the main surface of the printing substrate, and the included angle between the neutral plane and the main surface is more than or equal to 60 degrees and less than or equal to 120 degrees, and the magnetic conduction component is positioned between the magnet and the substrate, so that no matter the magnetic conduction component partially covers the side surface in the orthographic projection of the side surface or the magnetic conduction component has height change in the spacing direction of the side surface and the main surface, the magnetic conduction component can lead the magnetic lines of force in the magnetic field to generate complex change, thereby the magnetic conduction component can change the magnetic field generated by the magnet into a complex and changeable magnetic field, the orientation of the magnetic ink is changed abundantly under the complex and changeable magnetic field, the magnetic ink after magnetic orientation can generate abundant and changeable effect, therefore, the magnetic directional pattern of the magnetic directional device formed by combining the magnet and the magnetizer has stronger anti-counterfeiting effect, and the structure of the magnetic directional device is simple.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a magnetic orienting device of the present application;
FIG. 2 is an exploded schematic view of a first embodiment of a magnetic orienting device of the present application;
FIG. 3 is a schematic structural diagram of another embodiment of a magnetic orienting device of the present application;
FIG. 4 is a schematic structural diagram of yet another embodiment of a magnetic orienting device of the present application;
FIG. 5 is a schematic structural diagram of yet another embodiment of a magnetic orienting device of the present application;
FIG. 6 is a schematic structural diagram of another embodiment of a magnetic orienting device of the present application;
FIG. 7 is a schematic view of an angle of view of the security effect on a magnetically oriented pattern according to the present application;
FIG. 8 is a schematic view showing the effect of the magnetic ink on the magnetic alignment of the magnetic ink in the magnetic field formed by the magnetic alignment apparatus shown in FIG. 1, when viewed at an observation angle of 0 to 5 degrees;
FIG. 9 is a schematic diagram showing the effect of the magnetic ink on the magnetic alignment of the security device shown in FIG. 1 in a magnetic field at an observation angle of 45 °;
FIG. 10 is a schematic view showing the effect of the magnetic ink on the security device of FIG. 1 after magnetic alignment in a magnetic field formed by the magnetic alignment device, viewed at an observation angle of 75 degrees;
FIG. 11 is a schematic structural diagram of a second embodiment of a magnetic orienting device of the present application;
FIG. 12 is a schematic view showing the effect of the magnetic ink on the security pattern after magnetic alignment in the magnetic field formed by the magnetic alignment device shown in FIG. 11, viewed at an observation angle of 0 to 5 degrees;
FIG. 13 is a schematic view showing the effect of the magnetic ink on the security device of FIG. 11 after magnetic alignment in a magnetic field formed by the magnetic alignment device at an observation angle of 45 degrees;
FIG. 14 is a schematic view of the magnetic ink showing the effect of the magnetic ink on the security device after magnetic alignment in the magnetic field generated by the magnetic alignment device shown in FIG. 11, viewed at an observation angle of 75 degrees;
FIG. 15 is a schematic structural diagram of a third embodiment of a magnetic orienting device of the present application;
FIG. 16 is a schematic view showing the effect of the magnetic ink on the magnetic alignment of the magnetic ink in the magnetic field formed by the magnetic alignment device shown in FIG. 15 when viewed at an observation angle of 0 to 5 degrees;
FIG. 17 is a schematic view of the magnetic ink showing the magnetic orientation of the security device in FIG. 15 at a 45 ° viewing angle;
FIG. 18 is a schematic structural view of a fourth embodiment of a magnetic orienting device of the present application;
FIG. 19 is a schematic view showing the effect of the magnetic ink on the security pattern after magnetic alignment in the magnetic field formed by the magnetic alignment device shown in FIG. 18, viewed at an observation angle of 0 to 5 degrees;
FIG. 20 is a schematic view of the magnetic ink showing the magnetic orientation of the security device in FIG. 18 at a 45 ° viewing angle;
FIG. 21 is a schematic view showing the effect of the magnetic ink on the security device of FIG. 18 after magnetic alignment in a magnetic field formed by the magnetic alignment device, viewed at an observation angle of 75 °;
FIG. 22 is a schematic structural diagram of a fifth embodiment of a magnetic orienting device of the present application;
FIG. 23 is a schematic structural diagram of yet another embodiment of a magnetic orienting device of the present application;
FIG. 24 is a schematic diagram of an embodiment of a printing apparatus according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope claimed in the present application.
The method for printing the anti-counterfeiting patterns through the magnetic field is not multiple, the attractiveness is poor, and the ever-increasing demands of the public and the market cannot be met. And the magnetic orientation device for forming the magnetic field comprises a plurality of magnets, and has the disadvantages of complex structure, high cost and monotonous effect. The magnetic field directions of each magnet are different, and the magnets influence each other to form a special magnetic induction net for drawing, so that an undesirable image can appear as long as one magnet has slight difference, the spatial positions of the magnets are fixed, the display effect is difficult to adjust, and the difficulty in repeatedly generating the same effect is high.
The inventor of the application discovers through long-term research that the magnetic field formed by combining the magnet and the magnetic conduction component performs magnetic orientation on the magnetic ink of the substrate, the printed pattern also has a strong anti-counterfeiting effect, and the magnetic orientation device formed by the magnet and the magnetic conduction component has a simple structure. Wherein the magnetic ink is coated on a major surface of the substrate.
As shown in fig. 1 and 2, fig. 1 is a schematic structural diagram of a first embodiment of a magnetic orientation device 1 of the present application, and fig. 2 is an exploded schematic diagram of the first embodiment of the magnetic orientation device 1 of the present application. The magnetic orienting device 1 comprises a magnet 11 and a magnetically conductive assembly 12.
The magnets 11 are arranged such that the neutral plane 112 of the magnets 11 is arranged crosswise to the main surface 21 of the print substrate 2. It will be appreciated that the south-north pole interface of the magnet 11 is the neutral plane 112 of the magnet 11.
The angle a between the neutral plane 112 of the magnet 11 and the main surface 21 of the print substrate 2 may be 90 °, although not limited thereto, as long as the angle a between the neutral plane 112 of the magnet 11 and the main surface 21 of the print substrate 2 is greater than or equal to 60 degrees and less than or equal to 120 degrees.
In the present embodiment, the magnet 11 has a rectangular parallelepiped shape. In other embodiments, the magnet 11 may have various shapes such as a horseshoe shape or a cylindrical shape. Alternatively, as shown in fig. 3, the magnet may have a fan-ring shape.
Wherein the number of the magnets 11 may be one. It will be appreciated that the number of magnets 11 may alternatively be plural.
The magnet 11 may also comprise a side surface 111 adjacent to the substrate 2.
Wherein, the magnetic conduction component 12 is arranged between the side surface 111 of the magnet 11 and the printing substrate 2. The magnetically permeable assembly 12 can then be positioned adjacent the south pole-north pole interface.
The orthographic projection of the magnetic conducting member 12 on the side surface 111 of the magnet 11 covers the side surface 111 of the magnet 11 partially, but in other embodiments, the orthographic projection of the magnetic conducting member 12 on the side surface 111 can cover the entire side surface 111.
The magnetic permeable component 12 has no height variation in the direction of the spacing of the side surface 111 and the main surface 21. In other embodiments, as shown in fig. 4, there may be a height variation of the magnetic permeable assembly 12 in the direction of the spacing of the side surface 111 and the main surface 21.
The magnetic conducting assembly 12 may comprise 2 magnetic conductors, although the number of magnetic conductors is not limited thereto as long as the number of magnetic conductors is greater than or equal to 1.
Wherein, the shapes of all the magnetizers can be the same. In other embodiments, the shape of all the magnetizers may be different.
In the present embodiment, the magnetizer may be a bar-shaped magnetizer 121, but is not limited thereto, and for example, the magnetizer may be a block-shaped magnetizer.
Further, the strip-shaped magnetic conductor 121 may be a rectangular parallelepiped. Of course, in another implementation, the strip-shaped magnetic conductor 121 may be in various shapes such as a cylinder, a curve, a taper strip, or a prismatic strip, for example, a strip-shaped magnetic conductor in a wavy line as shown in fig. 5.
In addition, all the magnetizers may have the same size. For example, the magnetic conducting assembly 12 comprises 2 rectangular parallelepiped strip-shaped magnetic conductors 121 of 20mm by 30mm by 60 mm. It will be appreciated that the dimensions of all the conductors may also be different. For example, the magnetic permeable assembly 12 comprises a rectangular parallelepiped strip-shaped magnetic conductor 121 of 20mm by 30mm by 60mm and a rectangular parallelepiped strip-shaped magnetic conductor 121 of 10mm by 40mm by 70 mm.
The magnetizer can be made of iron, electrical steel, magnetic stainless steel, ferrite, nickel-based alloy and other ferromagnetic substances.
In addition, each magnetizer partially covers the side surface 111 in an orthographic projection of the side surface 111.
And, the orthographic projection of at least part of the strip-shaped magnetizer 121 on the side surface 111 can fall on the side surface 111 completely. Of course, in other embodiments, the orthographic projection of at least a portion of the strip-shaped magnetizer 121 on the side surface 111 may not fall on the side surface 111 completely.
The strip-shaped magnetizers 121 may be arranged side by side. All the strip-shaped magnetizers 121 may be disposed at intervals from each other on the orthographic projection of the side surface 111. In other embodiments, all the strip-shaped magnetic conductors 121 may also be arranged close to each other on the orthographic projection of the side surface 111.
The included angle b between the axial direction of the strip-shaped magnetizer 121 and the side surface 111 is 0 degree, that is, the axial direction of the strip-shaped magnetizer 121 is parallel to the side surface 111, so that the magnetic orienting device 1 can generate a symmetrical magnetic field by matching with the technical characteristics that the neutral surface 112 is perpendicular to the main surface 21, and the effect graph of the magnetic ink 3 obtained by magnetic orientation is symmetrical. Of course, the angle b between the axial direction of the strip-shaped magnetic conductor 121 and the side surface 111 is not limited to this, as long as the angle b is smaller than 30 degrees or larger than 150 degrees. For example, as shown in fig. 6, the angle b between the axial direction of the strip-shaped magnetic conductor 121 and the side surface 111 is 7 °.
An orthographic projection of the axis direction of the strip-shaped magnetizer 121 on the side surface 111 may be crossed with an orthographic projection of the magnetic axis of the magnet 11 on the side surface 111. Alternatively, an orthographic projection of the axial direction of the strip-shaped magnetizer 121 on the side surface 111 may be disposed perpendicular to an orthographic projection of the magnetic axis of the magnet 11 on the side surface 111. Of course, in another implementation, the orthographic projection of the axial direction of the strip-shaped magnetizer 121 on the side surface 111 and the orthographic projection of the magnetic axis of the magnet 11 on the side surface 111 may be arranged in parallel.
The magnetic ink 3 on the substrate 2 is magnetically oriented by the magnetic orienting device 1 of the present embodiment, and as shown in fig. 7, the magnetically oriented pattern is observed by rotating in the entire circumferential direction by 360 °; or rotating the magnetically oriented pattern by 180 degrees in a radial direction parallel to the paper surface, the effect schematics shown in fig. 8, 9 and 10 can be obtained. Wherein, fig. 8 is the effect of observing the magnetically oriented pattern at an observation angle of 0 ° to 5 °, fig. 9 is the effect of observing the magnetically oriented pattern at an observation angle of 45 °, and fig. 10 is the effect of observing the magnetically oriented pattern at an observation angle of 75 °, it can be seen that there are two parallel, bright, translatable, light-reflecting bands on the magnetically oriented pattern when observed from directly above; in addition, in the process of axial rotation of the magnetically oriented pattern (90 ° → 0 ° → 90 °), the two parallel light-reflecting bands on the magnetically oriented pattern do not move in parallel, but gradually change from the two parallel light-reflecting bands into a wide and bright band, and this phenomenon can be referred to as "double door opening".
Referring to fig. 11, fig. 11 is a schematic structural diagram of a second embodiment of a magnetic orientation device 1 of the present application. The difference between this embodiment and the first embodiment is the shape and the placement position of the strip-shaped magnetic conductor 121 in this embodiment. The magnetic orientation device 1 of the present embodiment specifically includes a magnet 11 and a magnetically conductive assembly 12.
The magnet 11 is a rectangular parallelepiped magnet 11. The neutral plane 112 of the magnet 11 is arranged crosswise to the main surface 21 of the print substrate 2 and forms an angle of 90 ° with the main surface 21 of the print substrate 2.
The magnetic conducting component 12 is disposed between the side surface 111 of the magnet 11 and the substrate 2, wherein the magnetic conducting component 12 partially covers the side surface 111 in an orthographic projection of the side surface 111.
The magnetic conducting assembly 12 comprises a cylindrical strip-shaped magnetic conductor 121. All the strip-shaped magnetizers 121 have the same shape and size. The included angle b between the axial direction of all the strip-shaped magnetizers 121 and the side surface 111 is 0 degree. The strip-shaped magnetizers 121 are closely arranged on the orthographic projection of the side surface 111. Each strip-shaped magnetizer 121 partially covers the lateral surface 111 on the orthographic projection of the lateral surface 111. In addition, the orthographic projection of at least part of the strip-shaped magnetizer 121 on the side surface 111 does not fall on the side surface 111 completely.
And, the orthographic projection of the axial direction of at least two strip-shaped magnetizers 121 on the side surface 111 and the orthographic projection of the magnetic axis of the magnet 11 on the side surface 111 are arranged to intersect with each other, that is, an included angle c exists between the axial line of the strip-shaped magnetizer 121 and the magnetic axis of the magnet 11.
The cross-sectional area of at least a partial region of the strip-shaped magnetic conductor 121 in a direction perpendicular to the direction of separation of the side surface 111 of the magnet 11 and the main surface 21 of the substrate 2 varies in a direction toward the main surface 21, i.e., the magnetic conductive member 12 varies in height in the direction of separation of the side surface 111 and the main surface 21.
Magnetically orienting the magnetic ink 3 on the printing substrate 2 by the magnetic orienting device 1 of the embodiment, and observing the magnetically oriented pattern in a 360-degree whole circumferential direction in a rotating manner; or rotating the magnetically oriented pattern 180 degrees in a radial direction parallel to the paper surface, the effect schematics shown in fig. 12, 13 and 14 can be obtained. In fig. 12, the effect of observing the magnetically oriented pattern at an observation angle of 0 ° to 5 °, fig. 13, and fig. 14, the effect of observing the magnetically oriented pattern at an observation angle of 45 °, it can be seen that in the process of axial rotation (90 ° → 0 ° → 90 °), the position of bright spots changes with the rotation of the observation angle, and there are many bright spots in dark places, which can be referred to as fog dispersal "/" waterfall "/" fire ".
Referring to fig. 15, fig. 15 is a schematic structural diagram of a third embodiment of a magnetic orientation device 1 of the present application. The present embodiment differs from the first embodiment in that: and (3) a magnetic conduction component 12. The magnetic orientation device 1 of the present embodiment specifically includes a magnet 11 and a magnetically conductive assembly 12.
The magnet 11 is a rectangular parallelepiped magnet 11. The neutral plane 112 of the magnet 11 is arranged crosswise to the main surface 21 of the print substrate 2 and makes an angle of 90 ° with the main surface 21 of the print substrate 2.
The magnetic conductive member 12 is disposed between the side surface 111 of the magnet 11 and the substrate 2. Wherein the magnetic conducting assembly 12 partially covers the side surface 111 in an orthographic projection of the side surface 111.
The magnetically permeable assembly 12 includes a block-shaped magnetically permeable body 122. It is to be understood that the number of the block-shaped magnetic conductors 122 is not limited thereto as long as it is greater than or equal to 1. And each block-shaped magnetizer 122 partially covers the lateral surface 111 on the orthographic projection of the lateral surface 111.
The block-shaped magnetizers 122 are arranged close to each other on the orthographic projection of the side surface 111. Of course, in other embodiments, the block-shaped magnetic conductors 122 may be disposed at intervals from each other on the orthographic projection of the side surface 111.
In the present embodiment, the cross-sectional area of at least a partial region of the plurality of block-shaped magnetic conductors 122 in the perpendicular direction to the direction of spacing between the side surface 111 of the magnet 11 and the main surface 21 of the print substrate 2 is gradually reduced in the direction toward the main surface 21. It is understood that the cross-sectional area of at least part of the plurality of block-shaped magnetic conductors 122 in the direction perpendicular to the direction of separation of side surface 111 of magnet 11 and main surface 21 of print substrate 2 may also become gradually larger in the direction toward main surface 21, that is, as long as there is a change in the cross-sectional area of at least part of the plurality of block-shaped magnetic conductors 122 in the direction perpendicular to the direction of separation of side surface 111 of magnet 11 and main surface 21 of print substrate 2 in the direction toward main surface 21, that is, it means that there is a height change in magnetic conductive assembly 12 in the direction of separation of side surface 111 and main surface 21.
Further, the block-shaped magnetizer 122 may have a spherical shape. Of course, in other embodiments, the block magnetizer 122 may have a cone shape, a truncated cone shape, or a trapezoid shape, as long as the cross-sectional area of the block magnetizer 122 varies in a direction toward the main surface 21.
Magnetically orienting the magnetic ink 3 on the printing substrate 2 by the magnetic orienting device 1 of the embodiment, and observing the magnetically oriented pattern in a 360-degree whole circumferential direction in a rotating manner; or rotating the magnetically oriented pattern by 180 degrees in a radial direction parallel to the paper surface, the effect schematics shown in fig. 16 and 17 can be obtained. Among them, fig. 16 shows the effect of observing the magnetically oriented pattern at an observation angle of 0 ° to 5 °, and fig. 17 shows the effect of observing the magnetically oriented pattern at an observation angle of 45 °, and it can be seen that the position of the circular bright spot changes with the rotation of the observation angle during the axial rotation (90 ° → 0 ° → 90 °), and there is a phenomenon in which bright and dark places alternate, and further, since the 3D optically variable pigment is used, the color changes gradually, and this phenomenon can be referred to as "dynamic leopard streak".
Referring to fig. 18, fig. 18 is a schematic structural diagram of a fourth embodiment of a magnetic orientation device 1 according to the present application. The present embodiment differs from the first embodiment in that the magnetic conducting assembly 12 comprises at least one block-shaped magnetic conductor 122 in addition to at least one strip-shaped magnetic conductor 121. The magnetic orientation device 1 of the present embodiment specifically includes a magnet 11 and a magnetically conductive assembly 12.
The magnet 11 is a rectangular parallelepiped magnet 11. The neutral plane 112 of the magnet 11 is arranged crosswise to the main surface 21 of the print substrate 2 and makes an angle of 90 ° with the main surface 21 of the print substrate 2.
The magnetic conductive assembly 12 is disposed between the side surface 111 of the magnet 11 and the substrate 2.
Wherein the magnetic permeable member 12 covers the side surface 111 in its entirety in an orthographic projection of the side surface 111.
The magnetic conducting assembly 12 includes a cylindrical strip-shaped magnetic conductor 121. And each strip-shaped magnetizer 121 partially covers the side surface 111 on the orthographic projection of the side surface 111. The strip-shaped magnetizers 121 are closely arranged on the orthographic projection of the side surface 111.
The orthographic projection of the axial direction of the strip-shaped magnetizer 121 on the side surface 111 is perpendicular to the orthographic projection of the magnetic axis of the magnet 11 on the side surface 111.
Further, the magnetic conducting assembly 12 further comprises a block-shaped magnetic conductor 122. Of course, the number of the block magnetizers 122 may be 1 or more. Each block-shaped magnetic conductor 122 partially covers the side surface 111 in an orthographic projection of the side surface 111.
The block magnetizer 122 is disposed on a side of the strip magnetizer 121 facing the substrate 2. In another implementation, the block-shaped magnetizer 122 may also be disposed on a side of the strip-shaped magnetizer 121 away from the substrate 2, i.e., between the strip-shaped magnetizer 121 and the magnet 11.
The 18 block-shaped magnetic conductors 122 are arranged close to each other in an orthographic projection of the side surface 111.
In the present embodiment, the cross-sectional area of at least a partial region of the plurality of block-shaped magnetic conductors 122 in the perpendicular direction to the direction of spacing between the side surface 111 of the magnet 11 and the main surface 21 of the print substrate 2 becomes gradually smaller in the direction toward the main surface 21. It is understood that the cross-sectional area of at least part of the plurality of block-shaped magnetic conductors 122 in the direction perpendicular to the direction of separation of side surface 111 of magnet 11 and main surface 21 of print substrate 2 may also become gradually larger in the direction toward main surface 21, that is, as long as there is a change in the cross-sectional area of at least part of the plurality of block-shaped magnetic conductors 122 in the direction perpendicular to the direction of separation of side surface 111 of magnet 11 and main surface 21 of print substrate 2 in the direction toward main surface 21, that is, it means that there is a height change in magnetic conductive assembly 12 in the direction of separation of side surface 111 and main surface 21.
Further, the block-shaped magnetizer 122 may have a spherical shape. Of course, in other embodiments, the block magnetizer 122 may have a cone shape, a truncated cone shape, or a trapezoid shape, as long as the cross-sectional area of the block magnetizer 122 varies in a direction toward the main surface 21.
Magnetically orienting the magnetic ink 3 on the printing substrate 2 by the magnetic orienting device 1 of the embodiment, and observing the magnetically oriented pattern in a 360-degree whole circumferential direction in a rotating manner; or rotating the magnetically oriented pattern 180 degrees in a radial direction parallel to the paper, the effect schematics shown in fig. 19, 20 and 21 can be obtained. In fig. 19, the effect of observing the magnetically oriented pattern at an observation angle of 0 ° to 5 °, in fig. 20, the effect of observing the magnetically oriented pattern at an observation angle of 45 °, and in fig. 21, the effect of observing the magnetically oriented pattern at an observation angle of 75 °, it can be found that the magnetically oriented pattern of the magnetic orienting device 1 of the present embodiment has wavy lines radiating outward from the center, and in addition, has bright spots in the shape of a circle, an ellipse, or the like. In addition, during the axial rotation (90 ° → 0 ° → 90 °), it can be seen that the position of the bright spot changes with the rotation of the observation angle, and the color changes gradually due to the use of the 3D optically variable pigment, and this phenomenon can be referred to as "dewdrop".
This embodiment is mainly through the magnetizer that two-layer shape is different, makes the magnetic field that magnet 11 produced take place more complicated change for the shape of the pattern after the magnetism orientation changes greatly, makes the pattern after the magnetism orientation pleasing to the eye and anti-fake effectual. It can be understood that, on the basis of the fourth embodiment of the magnetic orienting device 1 of the present application, the inventor of the present application finds, through further research, that the magnetic conducting component 12 includes at least two magnetic conducting layers, each magnetic conducting layer is composed of at least one magnetic conductor, the shape of the magnetic conductor in at least one magnetic conductor is different from the shape of the magnetic conductor in other magnetic conductors, the magnetic conducting component 12 with such a structure can make the magnetic field generated by the magnet 11 change more complexly, change the shape of the pattern after magnetic orientation greatly, and make the pattern after magnetic orientation have a good anti-counterfeiting effect.
Referring to fig. 22, fig. 22 is a schematic structural diagram of a fifth embodiment of a magnetic orienting device 1 of the present application. The present embodiment is different from the first embodiment in that the number of magnets 11 is at least two. The magnetic orientation device 1 of the present embodiment specifically includes a magnet 11 and a magnetically conductive assembly 12.
The neutral plane 112 of the magnet 11 is arranged crosswise to the main surface 21 of the print substrate 2 and forms an angle of 90 ° with the main surface 21 of the print substrate 2.
The magnet 11 is rectangular. Of course, the present invention is not limited to this, and the magnet 11 may have a fan-ring shape, for example, as shown in fig. 23.
The number of magnets 11 is at least two. Specifically, the number of the magnets 11 may be 3.
At least two magnets 11 are arranged at intervals. And the spacing between adjacent magnets 11 may be equal or unequal.
The magnets 11 may be arranged side by side, but the magnets 11 may not be arranged side by side.
The magnetic conductive assembly 12 is disposed between the side surface 111 of the magnet 11 and the substrate 2.
Wherein the orthographic projection of the magnetic permeable assembly 12 on the side surface 111 partially covers the side surface 111 of each magnet 11.
The magnetic conducting assembly 12 comprises at least one strip-shaped magnetic conductor 121. Of course, the magnetically permeable assembly 12 may alternatively include other shaped magnetic conductors, such as the block-shaped magnetic conductor 122. It is understood that the magnetic conductive assembly 12 may further comprise a magnetic conductor of other shapes, such as a block magnetic conductor 122, on the basis of comprising at least one strip magnetic conductor 121.
Specifically, the number of the strip-shaped magnetizers 121 may be 2, but is not limited thereto. Specifically, each strip-shaped magnetic conductor 121 partially covers the side surface 111 on an orthographic projection of the side surface 111 of each magnet 11.
The strip magnetizer 121 is bridged on at least two magnets 11, so that each magnet 11 and the corresponding magnetizer can be matched to have a magnetic orientation effect on the magnetic ink 3 on the printing substrate 2 through the combination of at least one long strip magnetizer 121 and a plurality of magnets 11, the magnetic orientation device 1 can magnetically orient a plurality of printing substrates 2 or large printing substrates 2 at one time, and the magnetic orientation efficiency is improved.
The structure and specific arrangement of the strip-shaped magnetic conductor 121 have corresponding technical features and technical effects to the strip-shaped magnetic conductor 121 in the first embodiment, which are not described herein again.
It can be understood that the shape of the strip-shaped magnetizer 121 is related to the arrangement position and the number of the magnets 11. For example, the magnets 11 are arranged in parallel, and the plurality of magnets 11 are located on a straight line, so that the strip-shaped magnetic conductor 121 is a rectangular parallelepiped. For another example, as shown in fig. 23, when the plurality of magnets 11 are located on the same circle or ellipse, the strip-shaped magnetic conductor 121 is annular.
In summary, the neutral plane 112 of the magnet 11 is disposed across the main surface 21 of the substrate 2, and the included angle between the neutral plane 112 and the main surface 21 is greater than or equal to 60 degrees and less than or equal to 120 degrees, and the magnetic conducting component 12 is located between the magnet 11 and the substrate 2, so that no matter the orthographic projection of the magnetic conducting component 12 on the side surface 111 covers the side surface 111 partially, or the height of the magnetic conducting component 12 in the spacing direction between the side surface 111 and the main surface 21 changes, the magnetic conducting component 12 can make the magnetic lines of force in the magnetic field change complexly, so that the magnetic conducting component 12 can make the magnetic field generated by the magnet 11 change into a complex and changeable magnetic field, so that the orientation of the magnetic ink 3 changes abundantly under the complex and changeable magnetic field, the magnetically oriented magnetic ink 3 can generate abundant and changeable effects, so that the magnetically oriented pattern of the magnetic orienting device 1 formed by combining the magnet 11 and the magnetic conductor has strong anti-counterfeit effect, and the structure of the magnetic orientation device 1 is simple.
The embodiment of the application also provides a printing device 4. As shown in fig. 24, the printing apparatus 1 includes a magnetic orienting device 1, a printing device 41, a conveying device 42, and a curing device 43. The transport device 42 is used for transporting the printing substrate 2 through the printing device 41, the magnetic orientation device 1 and the curing device 43 in sequence, the printing device 41 is used for printing the magnetic ink 3 on the main surface 21, the magnetic orientation device 1 is used for carrying out magnetic orientation on the magnetic ink 3, and the curing device 43 is used for curing the magnetically oriented ink. The magnetic orientation device 1 is the magnetic orientation device 1 provided in any of the above embodiments, and has corresponding technical features and technical effects, which are not described herein again.
The above are only examples of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (12)
1. A magnetic orienting device is characterized by comprising a magnet and a magnetic conduction assembly;
the magnet is arranged in a way that a neutral surface of the magnet is crossed with a main surface of a printing substrate, and an included angle between the neutral surface and the main surface is greater than or equal to 60 degrees and less than or equal to 120 degrees, and the main surface is used for coating magnetic ink;
the magnetic conducting assembly is composed of at least one magnetic conductor which is made of ferromagnetic substances and is arranged between the side surface of the magnet, which is adjacent to the printing substrate, and the printing substrate, wherein the orthographic projection of the magnetic conducting assembly on the side surface covers the side surface locally, or the magnetic conducting assembly has height change in the spacing direction of the side surface and the main surface.
2. The magnetic alignment device of claim 1, wherein the magnetic conductive assembly comprises at least one strip-shaped magnetic conductor, an included angle between an axial direction of the strip-shaped magnetic conductor and the side surface is smaller than 30 degrees or larger than 150 degrees, and an orthographic projection of each strip-shaped magnetic conductor on the side surface partially covers the side surface.
3. A magnetic orienting device as in claim 2 wherein the strip-like magnetizers are arranged in a straight line or in a curved line.
4. A magnetic orienting device as in claim 2 wherein the strip-like magnetizers are at least two arranged side by side and spaced from each other in the orthographic projection of the side surface.
5. The magnetic alignment device of claim 2, wherein the strip-shaped magnetizers are at least two strip-shaped magnetizers arranged side by side and are arranged in a cylindrical shape, and orthographic projections of the at least two strip-shaped magnetizers on the side surfaces are arranged close to each other or at intervals.
6. A magnetic orienting device as claimed in claim 4 or 5 wherein the orthographic projection of the axial direction of the at least two strip-like magnetizers on the side surface and the orthographic projection of the magnetic axis of the magnet on the side surface are arranged to cross each other.
7. The magnetic alignment device according to claim 4 or 5, wherein the magnetic conductive assembly further comprises a plurality of block magnetic conductors disposed on a side of the at least two strip-shaped magnetic conductors facing the substrate, an orthographic projection of each block magnetic conductor on the side surface partially covers the side surface, and the orthographic projections of the plurality of block magnetic conductors on the side surface are closely arranged or spaced.
8. The magnetic orienting device of claim 7 wherein at least some regions of the plurality of block-shaped magnetizers have cross-sectional areas along a direction perpendicular to a direction of spacing between the side surface and the main surface, which become gradually smaller in a direction approaching the main surface.
9. The magnetic orienting device of claim 2 wherein the magnets are rectangular or fan-shaped and are at least two spaced apart magnets, and the strip-shaped magnetizer is bridged across the at least two magnets.
10. A magnetic orienting device as in claim 1 wherein the magnetic conducting assembly comprises a plurality of block-shaped magnetic conductors, each block-shaped magnetic conductor partially covering the side surface in an orthographic projection of the side surface, and the plurality of block-shaped magnetic conductors are closely arranged or spaced from each other in the orthographic projection of the side surface.
11. The magnetic orienting device of claim 10 wherein at least some regions of the plurality of block magnetizers have cross-sectional areas along a direction perpendicular to a direction of spacing between the side surface and the main surface gradually decreasing in a direction toward the main surface.
12. A printing apparatus comprising a magnetic orientation device according to any one of claims 1 to 11, a printing device, a transport device and a curing device, wherein the transport device is adapted to transport the substrate sequentially past the printing device, the magnetic orientation device and the curing device, the printing device is adapted to print the magnetic ink on the major surface, the magnetic orientation device is adapted to magnetically orient the magnetic ink, and the curing device is adapted to cure the magnetically oriented ink.
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| CN202010403322.6A CN111645411B (en) | 2020-05-13 | 2020-05-13 | Magnetic orientation device and printing equipment |
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| CN202010403322.6A CN111645411B (en) | 2020-05-13 | 2020-05-13 | Magnetic orientation device and printing equipment |
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| CN111645411B true CN111645411B (en) | 2022-07-26 |
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| CN113400782B (en) * | 2021-04-29 | 2023-06-02 | 惠州市华阳光学技术有限公司 | Fixed magnetic assembly and printing device |
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