CN106864014B - Magnet and magnetic orientation device - Google Patents
Magnet and magnetic orientation device Download PDFInfo
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- CN106864014B CN106864014B CN201510917042.6A CN201510917042A CN106864014B CN 106864014 B CN106864014 B CN 106864014B CN 201510917042 A CN201510917042 A CN 201510917042A CN 106864014 B CN106864014 B CN 106864014B
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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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Abstract
The invention discloses a magnet and a magnetic orientation device, wherein the magnet comprises a first magnet and a second magnet, an included angle between a first magnetic pole middle division line for dividing the first magnet into a first N magnetic pole area and a first S magnetic pole area and a second magnetic pole middle division line for dividing the second magnet into a second N magnetic pole area and a second S magnetic pole area is more than or equal to zero degree and less than ninety degree, the first N magnetic pole area and the second S magnetic pole area are adjacently arranged on one side of the first magnetic pole middle division line and the second magnetic pole middle division line, the first S magnetic pole area and the second N magnetic pole area are adjacently arranged on the other side of the first magnetic pole middle division line and the second magnetic pole middle division line, so that a magnetic pigment sheet is influenced by the interaction of magnetic fields of the first magnet and the second magnet, compared with the prior art, the invention can obtain the effect of different visual pattern forms along with the change of the observation visual angle, can meet the requirement of higher-grade anti-counterfeiting effect.
Description
Technical Field
The present invention relates to the field of magnetic alignment printing, and more particularly to a magnet and magnetic alignment device for magnetically aligning magnetic pigment flakes in an ink layer on a printed article.
Background
Magnetic inks are widely used in various security fields such as banknotes, securities, certificates, etc. magnetic inks usually comprise magnetic pigment flakes, such as magnetic optically variable pigment flakes, which can be oriented along the direction of a magnetic field. Therefore, an artificially designed specific magnetic field needs to be formed inside the magnetic ink in the printing process to orient the magnetic pigment flakes therein, so that the magnetic pigment flakes can have different angular directions in different areas, and further the magnetic pigment flakes generate magnetic orientation patterns with unique effects in the magnetic ink, and in addition, the magnetic optically variable pigment flakes also have the traditional optically variable effect of changing colors along with the change of observation visual angles.
The magnet or the magnetic alignment device in the prior art can only form a magnetic alignment pattern with a fixed shape inside the magnetic ink layer under the action of the magnetic field of the magnet, the pattern effect is single, and the magnetic alignment pattern has the same pattern shape under different observation angles, specifically, as shown in fig. 1a and fig. 1b, where fig. 1a is a schematic view of the effect of the magnetic alignment pattern 10 in the prior art under the front view (vertical observation) angle when the magnetic alignment pattern 10 is a linear light pillar effect, and fig. 1b is a schematic view of the effect of the magnetic alignment pattern 10 in fig. 1a under the side view (fig. 1b is exemplified by being observed from the lower side deviating from the vertical direction).
Disclosure of Invention
The invention mainly solves the technical problem of providing a magnet and a magnetic orientation device, which are used for carrying out magnetic orientation on magnetic pigment flakes in an ink layer on a printed matter, and can enable the formed magnetic orientation pattern to have different first patterns and second patterns under a first observation visual angle and a second observation visual angle respectively.
In order to solve the above technical problem, an aspect of the present invention is to provide a magnet for magnetically orienting magnetic pigment flakes in an ink layer on a printed matter, the magnet including a first magnet and a second magnet, wherein an angle between a first magnetic pole bisector for dividing the first magnet into a first N-pole region and a first S-pole region and a second magnetic pole bisector for dividing the second magnet into a second N-pole region and a second S-pole region is greater than or equal to zero degrees and less than ninety degrees, the first N-pole region and the second S-pole region are adjacently disposed on one side of the first magnetic pole bisector and the second magnetic pole bisector, and the first S-pole region and the second N-pole region are adjacently disposed on the other side of the first magnetic pole bisector and the second magnetic pole bisector, so that the magnetic pigment flakes in the ink layer can receive a first magnetic field formed by the first N-pole region and the first S-pole region, And the interaction of a second magnetic field formed by the second N magnetic pole region and the second S magnetic pole region, a third magnetic field formed by the first N magnetic pole region and the second S magnetic pole region and a fourth magnetic field formed by the second N magnetic pole region and the first S magnetic pole region further enables the formed magnetic orientation pattern to have different first patterns and second patterns under the first observation visual angle and the second observation visual angle respectively.
Wherein the first magnet or the second magnet is of a regular shape or an irregular shape.
Specifically, the first N magnetic pole region is a regular shape or an irregular shape, the first S magnetic pole region is a regular shape or an irregular shape, the second N magnetic pole region is a regular shape or an irregular shape, and the second S magnetic pole region is a regular shape or an irregular shape.
Wherein the first magnet and the second magnet are two magnets arranged at intervals.
Optionally, the first magnet and the second magnet are two magnets arranged adjacently.
Wherein the first magnet and the second magnet are formed by four-pole magnets manufactured by an integral magnetizing and molding process.
Wherein the magnet comprises at least one four-pole magnet.
The magnet comprises two four-pole magnets which are overlapped up and down, and the four-pole magnets positioned above the two four-pole magnets which are overlapped up and down are arranged in a crossed manner with the magnetic pole regions of the four-pole magnets positioned below the four-pole magnets.
In order to solve the technical problem, the invention provides another technical scheme that a magnetic orientation device is provided. The magnetic alignment device is used for magnetically aligning magnetic pigment flakes in an ink layer on a printed matter and comprises the magnet.
The magnetic orienting device further comprises a roller, the magnet is embedded on the peripheral surface of the roller, and the surface of the magnet for magnetic orientation and the peripheral surface of the roller are the same curved surface, so that the magnet can rotate along with the roller to magnetically orient the magnetic pigment flakes in the ink layer.
The invention has the beneficial effects that: the magnet provided by the invention comprises a first magnet and a second magnet, wherein an included angle between a first magnetic pole middle line for dividing the first magnet into a first N magnetic pole area and a first S magnetic pole area and a second magnetic pole middle line for dividing the second magnet into a second N magnetic pole area and a second S magnetic pole area is more than or equal to zero degrees and less than ninety degrees, the first N magnetic pole area and the second S magnetic pole area are adjacently arranged at one side of the first magnetic pole middle line and the second magnetic pole middle line, and the first S magnetic pole area and the second N magnetic pole area are adjacently arranged at the other side of the first magnetic pole middle line and the second magnetic pole middle line, so that a magnetic pigment sheet in an ink layer can be subjected to a first magnetic field formed by the first N magnetic pole area and the first S magnetic pole area, a second magnetic field formed by the second N magnetic pole area and the second S magnetic pole area, a third magnetic field formed by the first N magnetic pole area and the second S magnetic pole area, and the first N magnetic pole area and the first S magnetic pole area And the second magnetic field, thereby causing the formed magnetic orientation pattern to have different first and second patterns at the first and second viewing angles, respectively. Compared with the prior art, the magnetic orientation pattern forming method can enable the formed magnetic orientation pattern to respectively have different first patterns and second patterns under a first observation visual angle and a second observation visual angle when the magnetic pigment flakes in the ink layer on the printed matter are subjected to magnetic orientation, so that the magnetic orientation pattern is enriched, the magnetic orientation pattern has more changeable magnetic orientation pattern display forms, and the requirement of a higher-level anti-counterfeiting effect is met.
Drawings
FIG. 1a is a schematic diagram of the effect of a prior art magnetic orientation pattern with a linear light pillar effect at a front viewing angle;
FIG. 1b is a schematic diagram of the effect of the magnetic alignment pattern of FIG. 1a from a side viewing perspective;
FIG. 2 is a schematic structural view of one embodiment of a magnet provided in the present invention;
FIG. 3 is a schematic structural view of FIG. 2, in which the angle between the bisector of the first magnetic pole and the bisector of the second magnetic pole is zero;
FIG. 4a is a schematic illustration of the effect of the magnetic orientation pattern formed in FIG. 3 from a front viewing perspective;
FIG. 4b is a schematic representation of the effect of the magnetic orientation pattern of FIG. 3 from a bottom right to top left viewing angle;
FIG. 4c is a schematic representation of the effect of the magnetic orientation pattern formed in FIG. 3 from a bottom left to top right viewing angle;
FIG. 5 is a schematic view of the arrangement of FIG. 2 in which the first and second magnets are formed by four-pole magnets;
FIG. 6 is a schematic diagram of the magnet of FIG. 5 including two four-pole magnets;
FIG. 7 is a schematic structural diagram of an embodiment of a magnetic alignment device provided in the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of an embodiment of a magnet according to the present invention, and fig. 3 is a schematic structural diagram of an included angle between a bisector of the first magnetic pole and a bisector of the second magnetic pole in fig. 2 being zero degree.
As shown in fig. 2 and 3, the magnet 20 includes a first magnet 21 and a second magnet 22, wherein an angle θ between a first pole bisector L1 for dividing the first magnet 21 into a first N pole region 211 and a first S pole region 212 and a second pole bisector L2 for dividing the second magnet 22 into a second N pole region 221 and a second S pole region 222 is greater than or equal to zero degrees and less than ninety degrees (exemplified as greater than zero degrees and less than ninety degrees in fig. 2, and exemplified as zero degrees in fig. 3), and the first N pole region 211 and the second S pole region 222 are disposed adjacent to one side of a first pole bisector L1 and a second pole bisector L2, and the first S pole region 212 and the second N pole region 221 are disposed adjacent to the other side of the first pole bisector L1 and the second pole L2, so that magnetic flakes in an ink layer can be formed by a magnetic field formed by the first N pole region 211 and the first S pole region 212, The second magnetic field formed by the second N-pole region 221 and the second S-pole region 222, the third magnetic field formed by the first N-pole region 211 and the second S-pole region 222, and the fourth magnetic field formed by the second N-pole region 221 and the first S-pole region 212 interact with each other, so that the formed magnetic orientation pattern has different first and second patterns at the first and second viewing angles, respectively.
In fig. 2 and 3, the first magnet 21 and the second magnet 22 are illustrated as being adjacently disposed on the left and right in the horizontal plane, and in other embodiments, the first magnet 21 and the second magnet 22 may be adjacently disposed on the top and bottom in the horizontal plane, or the first magnet 21 and the second magnet 22 may be adjacently disposed in different horizontal planes of the space.
Referring to FIGS. 4a, 4b and 4c, FIG. 4a is a schematic diagram illustrating an effect of the magnetic alignment pattern formed in FIG. 3 under a front view; FIG. 4b is a schematic representation of the effect of the magnetic orientation pattern of FIG. 3 from a bottom right to top left viewing angle; FIG. 4c is a schematic representation of the effect of the magnetic orientation pattern formed in FIG. 3 from a bottom left to top right viewing angle.
As shown in fig. 3 and 4a, the magnetic orientation pattern has a cross-like magnetic orientation pattern 40 under the influence of cross-like alternating magnetic fields of the first, second, third and fourth magnetic fields formed by the magnetic pole regions of the first magnet 21 and the second magnet 22 in a front view. As shown in fig. 3 and 4b, under the influence of the cross-like interaction magnetic field of the first, second, third and fourth magnetic fields formed by the magnetic pole regions of the first magnet 21 and the second magnet 22, the magnetic orientation patterns 41 and 42 have two separated magnetic orientation patterns, and the visual effect is a curved light beam pattern, and the magnetic orientation pattern 41 with a closer visual distance has a larger visual size than the magnetic orientation pattern 42 with a farther visual distance. As shown in fig. 3 and 4c, under the influence of the cross-like alternating magnetic field of the first, second, third and fourth magnetic fields formed by the magnetic pole regions of the first magnet 21 and the second magnet 22 in the viewing angle from the lower left to the upper right, the magnetic orientation patterns 43 and 44 are separated, the visual effect is a curved light beam pattern, and the magnetic orientation pattern 43 closer to the visual distance has a larger visual size than the magnetic orientation pattern 44 farther from the visual distance.
It will be appreciated that the magnetic flakes in the ink layer on the print under the influence of the cross-like alternating magnetic field of the first, second, third and fourth magnetic fields formed by the pole regions of the first magnet 21 and the second magnet 22 form a magnetically oriented pattern having different first and second patterns at the first and second viewing angles, respectively. The first observation angle and the second observation angle are any two different observation angles in the horizontal plane, and may be selected from, but not limited to, any two of the above front-view observation angles, right-down to left-up observation angles, and left-down to right-up observation angles.
It can also be understood that the magnetic fields of the magnets are spatially arranged and distributed, the strength of the magnetic fields or the density of the magnetic lines of force are different at different height positions from the magnets, so that when the magnetic pigment flakes in the ink layer on the printed matter are at different height positions from the first magnet 21 and the second magnet 22, the formed magnetic orientation patterns are also different visually due to the different strength of the magnetic fields, which not only enriches the visual effect of the magnetic orientation patterns, so that the anti-counterfeiting pattern effect is diversified, but also the counterfeiting difficulty is increased by the effect of respectively having different first patterns and second patterns at the first observation angle and the second observation angle, and the requirement of higher-level anti-counterfeiting effect is met.
The first magnet 21 and the second magnet 22 may be permanent magnets or soft magnets, respectively, and the first magnet 21 or the second magnet 22 may be regular shapes or irregular shapes, that is, the shapes of the first magnet 21 and the second magnet 22 are not limited, and may be regular shapes or irregular shapes, such as rectangular parallelepiped, square, cylinder, ellipsoid, or circular ring shapes, respectively.
Specifically, the first N magnetic pole region 211 of the first magnet 21 is in a regular shape or an irregular shape, the first S magnetic pole region 212 of the first magnet 21 is in a regular shape or an irregular shape, the second N magnetic pole region 221 of the second magnet 22 is in a regular shape or an irregular shape, and the second S magnetic pole region 222 of the second magnet 22 is in a regular shape or an irregular shape.
Among them, the first magnet 21 and the second magnet 22 shown in fig. 2 and 3 are two magnets disposed at an interval. In other embodiments, the optional first magnet 21 and second magnet 22 are two magnets disposed adjacently. That is, the adjacent arrangement of the present invention includes a spaced arrangement and an adjoining arrangement.
It is noted that the present invention provides magnets comprising at least one first magnet 21 and at least one second magnet 22. In another embodiment different from that shown in fig. 2 or 3, the magnet provided by the present invention includes a plurality of magnet intersecting units formed by the first magnet 21 and the second magnet 22 in an array arrangement according to the structure shown in fig. 2 or 3, such that the plurality of first magnets 21 and the plurality of second magnets 22 are adjacently arranged in a left-right intersecting manner in a horizontal plane, adjacently arranged in a top-bottom intersecting manner in a horizontal plane, or adjacently arranged in different horizontal planes in space.
Referring to fig. 5, fig. 5 is a schematic structural view of the first magnet and the second magnet of fig. 2 formed by four-pole magnets. As shown in fig. 5, the first magnet 21 and the second magnet 22 are formed of a four-pole magnet 50 manufactured through an integral magnetizing molding process.
The four-pole magnet 50 has four magnetic pole regions, i.e., a first N-pole region 111, a first S-pole region 112, a second N-pole region 121, and a second S-pole region 122, and the magnetic pole regions with opposite polarities are arranged adjacently.
In fig. 5, the first N-pole region 211 and the first S-pole region 212 are located in the left half of the four-pole magnet 50, and the second N-pole region 221 and the second S-pole region 222 are located in the right half of the four-pole magnet 50, so that the left half of the four-pole magnet 50 forms the first magnet 21 and the right half forms the second magnet 22. In other embodiments, the first N-pole region 211 and the second S-pole region 222, which are optionally located in the upper half of the four-pole magnet 50, form the first magnet 21 or the second magnet 22, and the second N-pole region 221 and the first S-pole region 212, which are optionally located in the lower half of the four-pole magnet 50, form the second magnet 22 or the first magnet 21.
The four-pole magnet 50 shown in fig. 5 is cylindrical, and in other embodiments, the four-pole magnet 50 may be circular or may have other regular or irregular shapes.
In the embodiment shown in fig. 5, the magnet 20 including the first magnet 21 and the second magnet 22 is formed by one four-pole magnet 50, and in other embodiments, the magnet 20 may be formed by two or more four-pole magnets 50. I.e., the magnet 20 includes at least one four-pole magnet 50.
Referring to fig. 6, fig. 6 is a schematic structural view of the magnet in fig. 5 including two four-pole magnets. As shown in fig. 5 and 6, the magnet 10 includes two four-pole magnets 50 stacked one on top of the other, and the upper four-pole magnet 50 of the two four-pole magnets 50 stacked one on top of the other crosses the magnetic pole area of the lower four-pole magnet 50. I.e., the upper four-pole magnet 50 is arranged adjacent to the opposite polarity pole region of the lower four-pole magnet 50. Specifically, as shown in fig. 6, the upper four-pole magnet 50 is sequentially formed by the first N-pole region 211, the second S-pole region 222, the second N-pole region 221 and the first S-pole region 212 in the clockwise direction, and the lower four-pole magnet 50 is sequentially formed by the second S-pole region 222, the second N-pole region 221 (not shown in fig. 6), the first S-pole region 212 and the first N-pole region 211 in the clockwise direction, which is equivalent to that the lower four-pole magnet 50 is rotated by one pole region in the counterclockwise direction.
It will be appreciated that in other embodiments, clockwise rotation of the lower four-pole magnet 50 by one pole region may also cause the upper four-pole magnet 50 to be aligned adjacent to the pole region of the lower four-pole magnet 50 of opposite polarity.
Each magnetic pole region in the four-pole magnet 50 may be a regular shape or an irregular shape, that is, the shapes of the first N-pole region 111, the first S-pole region 112, the second N-pole region 121, and the second S-pole region 122 are not limited, and may be a regular shape or an irregular shape, such as a rectangular parallelepiped, a cube, a cylinder, an ellipsoid, or a circular ring. It will be appreciated that the two stacked four-pole magnets 50 in the magnet 10 shown in fig. 6 may alternatively have the same or different shapes. When the two four-pole magnets 50 have different shapes, at least one of the magnetic pole regions of the upper four-pole magnet 50 is different from at least one of the magnetic pole regions of the lower four-pole magnet 50.
It is understood that the magnet 10 shown in fig. 6 can form four magnetic fields in different directions formed by the N-pole region and the S-pole region as described above on the side surfaces of two four-pole magnets 50 stacked one above the other, specifically at the junctions 61 of the four magnetic pole regions, and can also make the magnetic alignment patterns formed by the magnetic pigment flakes in the ink layer on the print above or below the magnetic pigment flakes have different first patterns and second patterns at the first viewing angle and the second viewing angle, respectively, under the interaction of the four magnetic fields in different directions.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of a magnetic orientation device according to the present invention.
As shown in fig. 7, the magnetic alignment device 70 includes the magnet 20 described above for magnetically aligning magnetic pigment flakes in an ink layer on the print 70.
Wherein, the magnetic orienting device 70 further comprises a roller 71 and a conveyor belt 72, the conveyor belt 72 is used for conveying the printed matter substrate 80 (which is used for printing the ink layer containing the magnetic pigment flakes), the magnet 10 is embedded on the outer circumferential surface of the roller 71, and the surface of the magnet 20 for magnetic orientation is the same curved surface as the outer circumferential surface of the roller 71, so that the magnet 10 can rotate along with the roller 71 to magnetically orient the magnetic pigment flakes in the ink layer on the printed matter substrate 80 on the conveyor belt 72.
The magnetic alignment device 70 includes at least one magnet 20, that is, at least one magnet 20, which is illustrated as two magnets 20 in fig. 7, is embedded on the outer circumferential surface of the roller 71, and the magnets 20 are arranged at intervals, so that the magnetic alignment of the magnetic pigment flakes in the ink layer on the plurality of printed substrate 80 can be realized by rotating the roller 71 once, and the production efficiency can be improved.
Different from the prior art, the magnet provided by the invention comprises a first magnet and a second magnet, wherein the included angle between a first magnetic pole middle-dividing line for dividing the first magnet into a first N-magnetic pole area and a first S-magnetic pole area and a second magnetic pole middle-dividing line for dividing the second magnet into a second N-magnetic pole area and a second S-magnetic pole area is more than or equal to zero degrees and less than ninety degrees, the first N-magnetic pole area and the second S-magnetic pole area are adjacently arranged on one side of the first magnetic pole middle-dividing line and the second magnetic pole middle-dividing line, and the first S-magnetic pole area and the second N-magnetic pole area are adjacently arranged on the other side of the first magnetic pole middle-dividing line and the second magnetic pole middle-dividing line, so that the magnetic pigment sheets in the ink layer can be subjected to a first magnetic field formed by the first N-magnetic pole area and the first S-magnetic pole area, a second magnetic field formed by the second N-magnetic pole area and the second S-magnetic pole area, And the interaction of a third magnetic field formed by the first N magnetic pole region and the second S magnetic pole region and a fourth magnetic field formed by the second N magnetic pole region and the first S magnetic pole region further enables the formed magnetic orientation pattern to have different first patterns and second patterns under the first observation visual angle and the second observation visual angle respectively. Compared with the prior art, the magnetic orientation pattern forming method can enable the formed magnetic orientation pattern to respectively have different first patterns and second patterns under a first observation visual angle and a second observation visual angle when the magnetic pigment flakes in the ink layer on the printed matter are subjected to magnetic orientation, so that the magnetic orientation pattern is enriched, the magnetic orientation pattern has more changeable magnetic orientation pattern display forms, and the requirement of a higher-level anti-counterfeiting effect is met.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A magnet for magnetically orienting magnetic pigment flakes in an ink layer on a print, the magnet comprising a first magnet and a second magnet, wherein a first pole bisector for dividing the first magnet into a first N-pole region and a first S-pole region and a second pole bisector for dividing the second magnet into a second N-pole region and a second S-pole region form an included angle greater than zero degrees and less than ninety degrees, and the first N-pole region is disposed adjacent to the second S-pole region on one side of the first pole bisector and the second pole bisector, and the first S-pole region is disposed adjacent to the second N-pole region on the other side of the first pole bisector and the second pole bisector, such that magnetic pigment flakes in the ink layer are capable of receiving a first magnetic field formed by the first N-pole region and the first S-pole region, The second magnetic field formed by the second N magnetic pole region and the second S magnetic pole region, the third magnetic field formed by the first N magnetic pole region and the second S magnetic pole region and the fourth magnetic field formed by the second N magnetic pole region and the first S magnetic pole region are mutually influenced, so that the formed magnetic orientation pattern has different first patterns and second patterns under a first observation angle and a second observation angle respectively;
the first magnet and the second magnet are arranged adjacently left and right in a horizontal plane;
the first magnet is a square body, and the median line of the first magnetic pole is a diagonal line of the first magnet;
the second magnet is a cube, and the second magnetic pole bisector is a diagonal of the second magnet.
2. The magnet according to claim 1, wherein the first magnet and the second magnet are two magnets disposed at a spacing.
3. The magnet according to claim 1, wherein the first magnet and the second magnet are two magnets disposed adjacently.
4. The magnet according to claim 3, wherein the first magnet and the second magnet are formed of a four-pole magnet made by an integral magnetizing molding process.
5. The magnet according to claim 4, wherein said magnet comprises at least one of said four-pole magnets.
6. The magnet according to claim 5, wherein the magnet comprises two of the four-pole magnets stacked one on top of the other, and the upper four-pole magnet of the two of the four-pole magnets stacked one on top of the other crosses the magnetic pole region of the lower four-pole magnet.
7. A magnetic alignment device for magnetically aligning magnetic pigment flakes in an ink layer on a printed article, the magnetic alignment device comprising a magnet as claimed in any one of claims 1 to 6.
8. The magnetic alignment device of claim 7, further comprising a roller, wherein the magnet is embedded on the outer circumferential surface of the roller, and the surface of the magnet for magnetic alignment is the same curved surface as the outer circumferential surface of the roller, so that the magnet can rotate with the roller to magnetically align the magnetic pigment flakes in the ink layer.
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| CN201510917042.6A CN106864014B (en) | 2015-12-10 | 2015-12-10 | Magnet and magnetic orientation device |
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| CN201510917042.6A CN106864014B (en) | 2015-12-10 | 2015-12-10 | Magnet and magnetic orientation device |
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| CN112542286B (en) * | 2020-10-30 | 2022-11-22 | 惠州市华阳光学技术有限公司 | Magnetic orientation device, printing apparatus, and method of manufacturing magnetic pattern |
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|---|---|
| CN106864014A (en) | 2017-06-20 |
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