CA2019844A1 - Forming method of patterned coating - Google Patents
Forming method of patterned coatingInfo
- Publication number
- CA2019844A1 CA2019844A1 CA002019844A CA2019844A CA2019844A1 CA 2019844 A1 CA2019844 A1 CA 2019844A1 CA 002019844 A CA002019844 A CA 002019844A CA 2019844 A CA2019844 A CA 2019844A CA 2019844 A1 CA2019844 A1 CA 2019844A1
- Authority
- CA
- Canada
- Prior art keywords
- magnetic
- substrate
- module
- magnetic pole
- elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
- B05D3/203—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields pre-treatment by magnetic fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/061—Special surface effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/04—Producing precipitations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
- H01F41/16—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
ABSTRACT
A method of forming a patterned coating upon a surface of a substrate is provided. A plurality of separate magnetic elements are arranged side by side forming an arrayed module of the elements. Then, the module is brought in close proximity to the reverse side of the substrate. And then, magnetic paint containing powdery magnetic material is applied to the surface of the substrate to make a wet film thereon. Finally, the wet film is hardened through baking or drying. A continuous pattern corresponding to the configuration pattern of the module appears on the surface of the substrate. Alternatively, a coated substrate may be introduced into a magnetic field while a wet film of magnetic paint is carried thereon.
A method of forming a patterned coating upon a surface of a substrate is provided. A plurality of separate magnetic elements are arranged side by side forming an arrayed module of the elements. Then, the module is brought in close proximity to the reverse side of the substrate. And then, magnetic paint containing powdery magnetic material is applied to the surface of the substrate to make a wet film thereon. Finally, the wet film is hardened through baking or drying. A continuous pattern corresponding to the configuration pattern of the module appears on the surface of the substrate. Alternatively, a coated substrate may be introduced into a magnetic field while a wet film of magnetic paint is carried thereon.
Description
FORMING METHOD OF PATTERNED COATING
BACKGROUND OF THE INVENTION
This invention relates to a method of forming a patterned coating upon various surfaces, especially a method or illustrating various letters, characters, or figures upon a coated surEace in a configuration having a different tone from ad~acent areas.
In order to illustrate various patterns on a coated film, various methods have been proposed, including: using an addltional coating and a masking template covering a portion of a pre coated surface; sticking colored sheets or colored tapes on a pre-coated Eilm: and embossing patterns on an under layer or substrate before a color coating.
However, these methods have specific drawbacks as follows: the mas~ing template needs time consuming application and stripping; stepped irregularities are produced between the first coating film and the second coating film: the patterns made by sheets or tapes tend to be erased within a short period; or embossing patterns cannot render an explicit configuration.
In Japanese Patent Public Disclosure No. 175670/1988, there is disclosed a method for forming a patterned coating utilizing a magnetic force. According to this method, at first a liquid coating material containing powdery magnetic materials, such as nickel, stainless steel or iron, is applied to a natural surface or pre-coated surface of the object.
Then, while the coating material is fluid, a magnet is brought near. Thus, the powdery magnetic materials, which are uniformly dispersed within the liquid coating material, move along magnetic force lines within the coating film, thereby producing a configuration pattern different from adjacent areas.
In Japanese Patent Public Disclosure No. 10376/1982, there is disclosed a method for manufacturing metallic plate having a patterned coating. According to this method, at first a liquid paint containing an iron oxide is coated upon a metallic plate. Then, a magnetic pole is brought near the coated film, so that a pattern corresponding to the magnetic pole appears upon the film. And then, the coated film is ba~ed to finish the coated layer.
PAT 1569~-1 ;~ , .
BACKGROUND OF THE INVENTION
This invention relates to a method of forming a patterned coating upon various surfaces, especially a method or illustrating various letters, characters, or figures upon a coated surEace in a configuration having a different tone from ad~acent areas.
In order to illustrate various patterns on a coated film, various methods have been proposed, including: using an addltional coating and a masking template covering a portion of a pre coated surface; sticking colored sheets or colored tapes on a pre-coated Eilm: and embossing patterns on an under layer or substrate before a color coating.
However, these methods have specific drawbacks as follows: the mas~ing template needs time consuming application and stripping; stepped irregularities are produced between the first coating film and the second coating film: the patterns made by sheets or tapes tend to be erased within a short period; or embossing patterns cannot render an explicit configuration.
In Japanese Patent Public Disclosure No. 175670/1988, there is disclosed a method for forming a patterned coating utilizing a magnetic force. According to this method, at first a liquid coating material containing powdery magnetic materials, such as nickel, stainless steel or iron, is applied to a natural surface or pre-coated surface of the object.
Then, while the coating material is fluid, a magnet is brought near. Thus, the powdery magnetic materials, which are uniformly dispersed within the liquid coating material, move along magnetic force lines within the coating film, thereby producing a configuration pattern different from adjacent areas.
In Japanese Patent Public Disclosure No. 10376/1982, there is disclosed a method for manufacturing metallic plate having a patterned coating. According to this method, at first a liquid paint containing an iron oxide is coated upon a metallic plate. Then, a magnetic pole is brought near the coated film, so that a pattern corresponding to the magnetic pole appears upon the film. And then, the coated film is ba~ed to finish the coated layer.
PAT 1569~-1 ;~ , .
2 ~
However, it has been found that an ordinary magnetic piece having a dimension of several inches or centimeters cannot produce a desira~ly explicit configuration pattern. This kind of magnetic piece has speclal properties such that, in the vicinity of both ends, magnetic forces are relatively strong but, at the intermediate portion, magnetic forces are poor. As a result, the configuration made by an ordinary magnetic piece is liable to become a non-readable, vague pattern.
SU~RY OF THE INVENTION
The present invention overcomes the above drawbacks of conventional known pattern forming methods and provides an explicit pattern within a coated object utilizing magnetic force.
The present invention also can provide a method capable of illustrating miscellaneous patterns without being restricted by the shape of the magnet itself.
According to the first aspect of the invention, there is provided a metho~ of forming a patterned coating upon a surface of a substrate, comprising the steps of: preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements, bringing said module into close proximity to the reverse side of a substrate, applying magnetic paint containing powdery magnetic material upon the surface of said substrate to make a wet film thereon, and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module, upon the surface of the substrate.
In this method, at first an imaginary chain of magnetic force lines are formed along the module of the elements, and then a substrate is inserted into the magnetic field and exposed to the magnetic force. When 3~ magnetic paint containing powdery magnetic material is sprayed onto the surface of the substrate, magnetic fine particles instantly begin to move within the wet film toward the magnetic force lines. As the wet film loses its fluidity, the moving magnetic material slows down and stops near the magnetic force lines. Thus, an explicit continuous pattern corresponding to the configuration pattern of the module appears in the hardened film.
The appearance of the pattern is not always identical with the .
configuration pattern of the magnetic chain, since magnetic force lines vary, depending upon the directions of the magnetic elements, especially upon the positions of North magnetic poles and South magnetic poles carried on the elements. It should be appreciated that a delicate pattern can be illustrated in the hardened film by changing the orientatlon of each magnetic element.
Referring to the magnetic elements, which may be carried on a plastic sheet or metallic plate, a metallic magnet, ferrite magnet, sintered magnet or flexible magnet may be used, depending upon the shape or magnetic properties. Preferably, these magnetic elements are formed through a moulding process into a relatively small plece having a rectangular, triangular, polygonal or circular configuration. By a combination of several conflgurations, any pattern can be illustrated.
According to the second aspect of the invention, there is provided a method of forming a patterned coating upon a surface of a substrate comprising the steps of: preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements, applying magnetic paint containing powdery magnetic material upon a surface of a substrate to make a wet film thereon, bringing said module toward the surface or reverse side of said coated substrate in close vicinity to said wet film while the wet film is fluid, and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module, within the magnetic paint film.
In this method, a module of magnetic elements and a magnetic paint coated substrate are prepared separately. Then, the magneti~ paint coated substrate is introduced into the magnetic field produced by the module while the wet film of magnetic paint is fluid. As the coated substrate is inserted into the magnetic field and exposed to the magnetic force, magnetic fine particles instantly begin to move within the wet film in the direction of the magnetic force lines. As the wet film loses its fluidity, the moving magnetic material slows down and finally stops near the magnetic force lines. Thus, an explicit continuous pattern corresponding to the configuration pattern of the module appears in the magnetic paint film.
These characteristics of the invention are effected by the module of the magnetic elements, which are closely disposed in order to maintain 2~3l2~
magnetic forces therebetween.
In a preferable embodiment of the invention, each magnetic element comprises a rectangular or circular metallic plate having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and adjacent magnetic elements are disposed such that the North magnetic pole of one alement is positioned in close proximity to the South magnetic pole of the other element.
In a further preferred embodiment of the invention, the magnetic elements comprise bar-shaped or U-shaped magnets, each having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and each magnet is disposed perpendicularly to the substrate.
In a further preferred embodiment of the invention, the magnetic elements are arranged within a rubber or plastic sheet in a plurality of striped patterns.
As an example of the magnetic powder to be contained in the magnetic paint, stainless steel powder, ferrous powder, Fe304 coated mica powder, alloy powder containing iron, cobalt and nickel, magnetic iron oxide coated resin particles or the like may be utilized as long as they can move within the wet film and change direction under the influence of a magnetic force.
Of course, it should be contained and dispersed uniformly in magnetic paint. The aforementioned ~e304 coated mica powder is well known as a nacreous pigment of paint. It should be noted that an ordinary pigment can be utilized in the present invention as long as it has the property of being influenced by a magnetic force.
As an example of the magnetic paint to be applied to the surface of the substrate, any kind of ordinary paint can be utilized as long as it can form a cured film after having gone through a series of processes including coating under fluid conditions and baking or drying to harden the film.
The magnetic paint includes, other than the magnetic powder, a pigment~
vehicle resin, curing agent, solvent or the like. The ratio of the magnetic powder present relative to the magnetic paint is to be in a range such that an explicit pattern appears under the influence of a magnetic force. According to an experiment, the ratio is preferably more than 0.1 percent of the magnetic paint by weight~
The magnetic paint may be selected from an ordinary type which is hardened by baking or air drying under ambient temperatures.
2 ~ ~ 3 ~
The coating system can be selected from the following:
(1) 1-coat finishing system in which magnetic paint is coated upon a substrate thereby making a single coating layer.
(2) 2-coat l-bake finishing system in which, first, magnetic paint is coated upon a substrate, and then clear paint is applied to it by a wet on wet process, and finally both layers are cured by bakinB.
In an extended practical mode, this invention can apply to miscellaneous coating processes including more complicated coating steps, as long as the wet film is magnetically accessible from outside. For example, after a base color coating is formed upon a surface of a substrate as a first-coated layer, magnetic paint can be applied to the surface as an additional ornamental layer. When magnetic elements are brought near the ornamental layer, ~ome portions of the ornamental layer become thinner under the influence of magnetic force. As a result, some portions of the first-coated layer appear and provide delicate color patterns which have not previously been seen.
It is also possible to apply clear paint over the completed magnetic powder layer in order to protect the patterned surface from attack.
As an example of the substrate, non-magnetizable material such as synthetic resin, rubber, ceramic or aluminum plate is preferable, since these materials do not affect the magnetic force of the magnetic element.
Of course, under the restricted condition that the substrate is relatively thin, some kinds of magnetizable materials may be used. Especially in the case where the magnetic elements are brought near to the surface of the substrate, the influence is small. However, such an operation toward the surface is not desirable, because a collision may happen between the wet film and the magnetic elements, resulting in the destruction of the coated layer.
During the process of the present invention, the module of the magnetic elements should be supported on a guiding device, which may comprise a supporting rail, handling arm or similar member. When the magnetic elements are adhered together by a plastic tape, attention should be paid to the temperature during the baking process.
The forming method of the invention can be preferably utllized for illustrating various letters, characters, or figures upon a coated surface.
In addition, the method can be utilized for representing a repetitive 2 ~
pattern over a large area of the substrate. In this case, a plurality of magnetic modules are prepared or a single module is repeatedly used.
Other features and advantages of the invention wlll become apparent from a reading of the specification, when taken in conjunction with the drawings, in which like reference numerals refer to like elements in the several views.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a plan view of a reverse side of a substrate to be coated utilizing the method of the present invention;
Fig. 2 is a sectional view taken along the line A-A in ~'ig. l;
Fig. 3 is a plan view of the surface of the substrate which is coated by the method of the present invention;
Fig. 4 is a sectional view of an alternative embodiment similar to Fig, 2 Fig. 5 is a plan view illustrating an alternative module of multi-pole type magnetic ele~ents:
Fig. 6 is a perspective view of a modified module utilizing column-type magnetic elements:
Fig. 7 is a plan view illustrating an arrangement of circular magneticelements:
Fig~ 8 is a plan view illustrating an alternative arrangement of the magnetic elements in Fig. 7:
Fig. 9 is a perspective view of a modified arrangement utilizing a combination of several types of magnetic elements;
Fig. 10 is a perspective view of a modified arrangement utilizing a combination of bar-shaped and U-shaped magnetic elements, Fig. 11 is a plan view illustrating characters represented by the method of the present invention.
DESCRIPTION OF T~E PREFERRED EMBODIMENT
Referring to Figs. 1 to 3, there is shown a first embodiment utilizing the method of the present invention. As shown in Fig. 1, to the reverse side of the substrate 10 to be coated, is adhered an arrayed module 15 ~ .Ji~
which comprises a plurality of rectangular magnetic elements 11 supported on an adhesive tape 30. Each of the magnetic elements 11 carries a North magnetic pole and a South magnetic pole at the opposlte edges. The magnetic elements 11 are disposed side by side, and adjacent elements 11 are disposed such that the North pole of one element is positioned in close vicinity to the South pole of the other element, and that the South pole of the one element is positioned in close vicinity to the North pole of the other element. Accordingly, strong magnetic force lines are produced between the elements, of course in an imaginary form.
Fig. 2 shows the relationship between the coated paint 20, the substrate 10, the magnetic element 11 and the adhesive tape 30. It should be noted that the element 11 is firmly adhered to the substrate 10 by the adhesive tape 30.
Fig. 3 shows a surface which has been coated with magnetic paint. In this embodiment, after the module 15 of magnetic elements is adhered to the reverse side of the substrate 10, magnetic paint is sprayed on the surface.
Since an imaginary chain of magnetic force lines is formed along the module 15, as soon as the magnetic paint is thrown into the magnetic field and applied to the surface of the substrate, magnetic fine particles instantly begin to move within a wet film of the magnetic paint toward the direction of the magnetic force lines. As the wet film loses its fluidity, the movement o the magnetic material slows down and finally terminates near the magnetic force lines. Thus, a transitional area 24 in which a color tone is different from that of the adjacent area appears on the surface of the substrate 10. The configuration of the area 24 corresponds to the configuration pattern of the module 15. It should be noted that the configuration of the pattern 24 is not identical with the configuration pattern of the separated magnetic elements 11.
Subsequently to the pattern making process, the surface of the substrate 10 is subjected to a baking process or a drying process for stabillzing the pattern. After stabilization, the transitional area 2~
shows an explicit pattern. This pattern is essentially a transitional tone area within the coated layer, so that the surface of the substrate 10 remains flat and free from irregularities. This pattern does not vanish as long as the coated layer remains on the surface. Further, this pattern does not vary under the influence of sunlight.
Fig. 4 shows an alternative embodiment of the pattern making process.
At first, an appropriate pre-treatment is applied to the surface of the substrate 40, and then a primer layer 41 is formed by spraying 11quid paint on the surface. From this stage, this invention is applied to the pre-coated surface. In the same way as in the aforementioned process,referring to Figs. 1 to 3, the module of metallic elements 11 is adhered to the reverse side of the substrate ~0 using an adheslve tape 30. Thus, subsequently to the primer layer 41, a magnetic paint layer 42 is formed.
When magnetic paint is sprayed upon the primer layer 41 to make a wet film thereon, the aforementioned pattern is formed within the magnetic paint layer 42. Further, subsequently to the magnetic paint layer 42, a final coating layer 43 of clear paint is formed. After the module of the magnetic elements is removed therefrom, these layers 42 and 43 are sub~ected to a baking or drying step. In this embodiment, it i3 preferable to use strong magnetic elements having strong magnetic forces, since the primer layer 41 is intervening between the substrate and the magnetic paint layer.
Fig. 5 shows an alternative module 55 consisting of right and left multi-pole type magnetic elements 51, 52 and so on. Adjacent magnetic elements 51 and 52 are disposed such that each of the North magnetic poles of the element 51 is positioned in close vicinity to the South magnetic pole of the element 52, and that each of the South magnetic poles of the element 51 is positioned in close vicinlty to the North magnetic pole of the element 52. According to thls arrangement, the magnetic force lines M
are directed along the longitudinal direction of the module 55, so that a pattern revealed on the surface of the substrate becomes a continuous I-shaped pattern having a relatively large width.
Fig. 6 shows a modified module 63 utiliæing column-type magnetic elements 61, 62 and so on. This module 63 is used to illustrPte a C-shaped pattern on the surface of the substrate 10. Adjacent magnetic elements 61 and 62 are disposed such that the North magnetic pole of one element is positioned in close vicinity to the South magne~ic pole of the other element. According to this arrangement, the magnetic force lines are directed along the centerline of the module 63, so that a pattern revealed on the surface of the substrate 10 becomes a continuous C-shaped pattern.
It should be noted that the revealed pattern is not a dotted pattern of the .
2 ~ ~ ~ 3l,i/7, column-type magnets.
Fig. 7 shows a modified arrangement of magnetic elements. The module 66 comprises a plurality of circular magnetic elements 64, 65 and so on.
As compared with the arrangement in Fig. 6, each of the magnetic elements is rotated through 90 , Adjacent magnetic elements 64 and 65 are disposed such that the North magnetic pole of one element is posltioned in the same lateral side as the South magnetic pole of the other element, so that two parallel magnetic force lines M are formed on the upper space of the module 66. According to this arrangement, the magnetic force lines are directed along the lateral sides of the module 66, so that a pattern revealed on the surface of the substrate becomes an arcuate pattern, which is not identical with the dotted pattern of the circular magnets.
Fig. ô shows an alternative arrangement of the magnetic elements in Fig. 7. In this arrangement, ad~acent magnetic elements 67 and 68 of the module 69 are disposed such that the North magnetic pole of one element is positioned in the same lateral side as the North magnetic pole of the other element, and that the South magnetic pole of one element is positioned in the same lateral side as the South magnetic pole of the other element.
According to this arrangement, the magnetic force lines M are directed in a cross~over form due to a repelling force between the same magnetic poles, resulting in random lines. How~er, due to these random magnetic force lines, a delicate complicated pattern, similar to an arcuate form, appears on the surface of the substrate. Of course, this pattern is not identical with the dotted pattern of the circular magnets.
Fig. 9 shows a modified arrangement utilizing a combination module 75, including two types of magnetic elements. One type consists of ordinary two~pole magnetic elements 61 and 62, and the other type consists of multi-pole magnetic elements 71 and 72. As a result of the combination, the module 75 can create a continuous H-shaped pattern upon the surface of the substrate.
Fig. 10 shows a modified arrangement utilizing a combination module 85, including U-shaped magnets 81, 82 and bar-shaped magnets 83, 84. In these kinds of magnets or magnetic elements, the North magnetic pole and the South magnetic pole are positioned at their distal ends. As shown in Fig. 10, each magnet is perpendicularly disposed to the substrate 10. The upper ends of the magnets are arranged in a grid form, so that the ~AT 16690-1 .
combination module 85 reveals a grid form pattern upon the surface of the substrate 10.
Fig. 11 shows sample characters represented by the method of the invention. In this Pmbodiment, magnetic elements are filled up within a rubber or plastic sheet in a plurality oi striped patterns.
In an application of the method of the invention, a North magnetic pole and a South magnetic pole are easily detected by approaching a compass to the object. Therefore, the miscellaneous arrangements as shown in the drawings are easily prepared and utilized. The magnetic elements can be connected by an adhesive tape or similarly. Since the module of the magnetic elements can be removed easily, ater usage, no damage occurs to the substrate.
However, it has been found that an ordinary magnetic piece having a dimension of several inches or centimeters cannot produce a desira~ly explicit configuration pattern. This kind of magnetic piece has speclal properties such that, in the vicinity of both ends, magnetic forces are relatively strong but, at the intermediate portion, magnetic forces are poor. As a result, the configuration made by an ordinary magnetic piece is liable to become a non-readable, vague pattern.
SU~RY OF THE INVENTION
The present invention overcomes the above drawbacks of conventional known pattern forming methods and provides an explicit pattern within a coated object utilizing magnetic force.
The present invention also can provide a method capable of illustrating miscellaneous patterns without being restricted by the shape of the magnet itself.
According to the first aspect of the invention, there is provided a metho~ of forming a patterned coating upon a surface of a substrate, comprising the steps of: preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements, bringing said module into close proximity to the reverse side of a substrate, applying magnetic paint containing powdery magnetic material upon the surface of said substrate to make a wet film thereon, and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module, upon the surface of the substrate.
In this method, at first an imaginary chain of magnetic force lines are formed along the module of the elements, and then a substrate is inserted into the magnetic field and exposed to the magnetic force. When 3~ magnetic paint containing powdery magnetic material is sprayed onto the surface of the substrate, magnetic fine particles instantly begin to move within the wet film toward the magnetic force lines. As the wet film loses its fluidity, the moving magnetic material slows down and stops near the magnetic force lines. Thus, an explicit continuous pattern corresponding to the configuration pattern of the module appears in the hardened film.
The appearance of the pattern is not always identical with the .
configuration pattern of the magnetic chain, since magnetic force lines vary, depending upon the directions of the magnetic elements, especially upon the positions of North magnetic poles and South magnetic poles carried on the elements. It should be appreciated that a delicate pattern can be illustrated in the hardened film by changing the orientatlon of each magnetic element.
Referring to the magnetic elements, which may be carried on a plastic sheet or metallic plate, a metallic magnet, ferrite magnet, sintered magnet or flexible magnet may be used, depending upon the shape or magnetic properties. Preferably, these magnetic elements are formed through a moulding process into a relatively small plece having a rectangular, triangular, polygonal or circular configuration. By a combination of several conflgurations, any pattern can be illustrated.
According to the second aspect of the invention, there is provided a method of forming a patterned coating upon a surface of a substrate comprising the steps of: preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements, applying magnetic paint containing powdery magnetic material upon a surface of a substrate to make a wet film thereon, bringing said module toward the surface or reverse side of said coated substrate in close vicinity to said wet film while the wet film is fluid, and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module, within the magnetic paint film.
In this method, a module of magnetic elements and a magnetic paint coated substrate are prepared separately. Then, the magneti~ paint coated substrate is introduced into the magnetic field produced by the module while the wet film of magnetic paint is fluid. As the coated substrate is inserted into the magnetic field and exposed to the magnetic force, magnetic fine particles instantly begin to move within the wet film in the direction of the magnetic force lines. As the wet film loses its fluidity, the moving magnetic material slows down and finally stops near the magnetic force lines. Thus, an explicit continuous pattern corresponding to the configuration pattern of the module appears in the magnetic paint film.
These characteristics of the invention are effected by the module of the magnetic elements, which are closely disposed in order to maintain 2~3l2~
magnetic forces therebetween.
In a preferable embodiment of the invention, each magnetic element comprises a rectangular or circular metallic plate having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and adjacent magnetic elements are disposed such that the North magnetic pole of one alement is positioned in close proximity to the South magnetic pole of the other element.
In a further preferred embodiment of the invention, the magnetic elements comprise bar-shaped or U-shaped magnets, each having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and each magnet is disposed perpendicularly to the substrate.
In a further preferred embodiment of the invention, the magnetic elements are arranged within a rubber or plastic sheet in a plurality of striped patterns.
As an example of the magnetic powder to be contained in the magnetic paint, stainless steel powder, ferrous powder, Fe304 coated mica powder, alloy powder containing iron, cobalt and nickel, magnetic iron oxide coated resin particles or the like may be utilized as long as they can move within the wet film and change direction under the influence of a magnetic force.
Of course, it should be contained and dispersed uniformly in magnetic paint. The aforementioned ~e304 coated mica powder is well known as a nacreous pigment of paint. It should be noted that an ordinary pigment can be utilized in the present invention as long as it has the property of being influenced by a magnetic force.
As an example of the magnetic paint to be applied to the surface of the substrate, any kind of ordinary paint can be utilized as long as it can form a cured film after having gone through a series of processes including coating under fluid conditions and baking or drying to harden the film.
The magnetic paint includes, other than the magnetic powder, a pigment~
vehicle resin, curing agent, solvent or the like. The ratio of the magnetic powder present relative to the magnetic paint is to be in a range such that an explicit pattern appears under the influence of a magnetic force. According to an experiment, the ratio is preferably more than 0.1 percent of the magnetic paint by weight~
The magnetic paint may be selected from an ordinary type which is hardened by baking or air drying under ambient temperatures.
2 ~ ~ 3 ~
The coating system can be selected from the following:
(1) 1-coat finishing system in which magnetic paint is coated upon a substrate thereby making a single coating layer.
(2) 2-coat l-bake finishing system in which, first, magnetic paint is coated upon a substrate, and then clear paint is applied to it by a wet on wet process, and finally both layers are cured by bakinB.
In an extended practical mode, this invention can apply to miscellaneous coating processes including more complicated coating steps, as long as the wet film is magnetically accessible from outside. For example, after a base color coating is formed upon a surface of a substrate as a first-coated layer, magnetic paint can be applied to the surface as an additional ornamental layer. When magnetic elements are brought near the ornamental layer, ~ome portions of the ornamental layer become thinner under the influence of magnetic force. As a result, some portions of the first-coated layer appear and provide delicate color patterns which have not previously been seen.
It is also possible to apply clear paint over the completed magnetic powder layer in order to protect the patterned surface from attack.
As an example of the substrate, non-magnetizable material such as synthetic resin, rubber, ceramic or aluminum plate is preferable, since these materials do not affect the magnetic force of the magnetic element.
Of course, under the restricted condition that the substrate is relatively thin, some kinds of magnetizable materials may be used. Especially in the case where the magnetic elements are brought near to the surface of the substrate, the influence is small. However, such an operation toward the surface is not desirable, because a collision may happen between the wet film and the magnetic elements, resulting in the destruction of the coated layer.
During the process of the present invention, the module of the magnetic elements should be supported on a guiding device, which may comprise a supporting rail, handling arm or similar member. When the magnetic elements are adhered together by a plastic tape, attention should be paid to the temperature during the baking process.
The forming method of the invention can be preferably utllized for illustrating various letters, characters, or figures upon a coated surface.
In addition, the method can be utilized for representing a repetitive 2 ~
pattern over a large area of the substrate. In this case, a plurality of magnetic modules are prepared or a single module is repeatedly used.
Other features and advantages of the invention wlll become apparent from a reading of the specification, when taken in conjunction with the drawings, in which like reference numerals refer to like elements in the several views.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a plan view of a reverse side of a substrate to be coated utilizing the method of the present invention;
Fig. 2 is a sectional view taken along the line A-A in ~'ig. l;
Fig. 3 is a plan view of the surface of the substrate which is coated by the method of the present invention;
Fig. 4 is a sectional view of an alternative embodiment similar to Fig, 2 Fig. 5 is a plan view illustrating an alternative module of multi-pole type magnetic ele~ents:
Fig. 6 is a perspective view of a modified module utilizing column-type magnetic elements:
Fig. 7 is a plan view illustrating an arrangement of circular magneticelements:
Fig~ 8 is a plan view illustrating an alternative arrangement of the magnetic elements in Fig. 7:
Fig. 9 is a perspective view of a modified arrangement utilizing a combination of several types of magnetic elements;
Fig. 10 is a perspective view of a modified arrangement utilizing a combination of bar-shaped and U-shaped magnetic elements, Fig. 11 is a plan view illustrating characters represented by the method of the present invention.
DESCRIPTION OF T~E PREFERRED EMBODIMENT
Referring to Figs. 1 to 3, there is shown a first embodiment utilizing the method of the present invention. As shown in Fig. 1, to the reverse side of the substrate 10 to be coated, is adhered an arrayed module 15 ~ .Ji~
which comprises a plurality of rectangular magnetic elements 11 supported on an adhesive tape 30. Each of the magnetic elements 11 carries a North magnetic pole and a South magnetic pole at the opposlte edges. The magnetic elements 11 are disposed side by side, and adjacent elements 11 are disposed such that the North pole of one element is positioned in close vicinity to the South pole of the other element, and that the South pole of the one element is positioned in close vicinity to the North pole of the other element. Accordingly, strong magnetic force lines are produced between the elements, of course in an imaginary form.
Fig. 2 shows the relationship between the coated paint 20, the substrate 10, the magnetic element 11 and the adhesive tape 30. It should be noted that the element 11 is firmly adhered to the substrate 10 by the adhesive tape 30.
Fig. 3 shows a surface which has been coated with magnetic paint. In this embodiment, after the module 15 of magnetic elements is adhered to the reverse side of the substrate 10, magnetic paint is sprayed on the surface.
Since an imaginary chain of magnetic force lines is formed along the module 15, as soon as the magnetic paint is thrown into the magnetic field and applied to the surface of the substrate, magnetic fine particles instantly begin to move within a wet film of the magnetic paint toward the direction of the magnetic force lines. As the wet film loses its fluidity, the movement o the magnetic material slows down and finally terminates near the magnetic force lines. Thus, a transitional area 24 in which a color tone is different from that of the adjacent area appears on the surface of the substrate 10. The configuration of the area 24 corresponds to the configuration pattern of the module 15. It should be noted that the configuration of the pattern 24 is not identical with the configuration pattern of the separated magnetic elements 11.
Subsequently to the pattern making process, the surface of the substrate 10 is subjected to a baking process or a drying process for stabillzing the pattern. After stabilization, the transitional area 2~
shows an explicit pattern. This pattern is essentially a transitional tone area within the coated layer, so that the surface of the substrate 10 remains flat and free from irregularities. This pattern does not vanish as long as the coated layer remains on the surface. Further, this pattern does not vary under the influence of sunlight.
Fig. 4 shows an alternative embodiment of the pattern making process.
At first, an appropriate pre-treatment is applied to the surface of the substrate 40, and then a primer layer 41 is formed by spraying 11quid paint on the surface. From this stage, this invention is applied to the pre-coated surface. In the same way as in the aforementioned process,referring to Figs. 1 to 3, the module of metallic elements 11 is adhered to the reverse side of the substrate ~0 using an adheslve tape 30. Thus, subsequently to the primer layer 41, a magnetic paint layer 42 is formed.
When magnetic paint is sprayed upon the primer layer 41 to make a wet film thereon, the aforementioned pattern is formed within the magnetic paint layer 42. Further, subsequently to the magnetic paint layer 42, a final coating layer 43 of clear paint is formed. After the module of the magnetic elements is removed therefrom, these layers 42 and 43 are sub~ected to a baking or drying step. In this embodiment, it i3 preferable to use strong magnetic elements having strong magnetic forces, since the primer layer 41 is intervening between the substrate and the magnetic paint layer.
Fig. 5 shows an alternative module 55 consisting of right and left multi-pole type magnetic elements 51, 52 and so on. Adjacent magnetic elements 51 and 52 are disposed such that each of the North magnetic poles of the element 51 is positioned in close vicinity to the South magnetic pole of the element 52, and that each of the South magnetic poles of the element 51 is positioned in close vicinlty to the North magnetic pole of the element 52. According to thls arrangement, the magnetic force lines M
are directed along the longitudinal direction of the module 55, so that a pattern revealed on the surface of the substrate becomes a continuous I-shaped pattern having a relatively large width.
Fig. 6 shows a modified module 63 utiliæing column-type magnetic elements 61, 62 and so on. This module 63 is used to illustrPte a C-shaped pattern on the surface of the substrate 10. Adjacent magnetic elements 61 and 62 are disposed such that the North magnetic pole of one element is positioned in close vicinity to the South magne~ic pole of the other element. According to this arrangement, the magnetic force lines are directed along the centerline of the module 63, so that a pattern revealed on the surface of the substrate 10 becomes a continuous C-shaped pattern.
It should be noted that the revealed pattern is not a dotted pattern of the .
2 ~ ~ ~ 3l,i/7, column-type magnets.
Fig. 7 shows a modified arrangement of magnetic elements. The module 66 comprises a plurality of circular magnetic elements 64, 65 and so on.
As compared with the arrangement in Fig. 6, each of the magnetic elements is rotated through 90 , Adjacent magnetic elements 64 and 65 are disposed such that the North magnetic pole of one element is posltioned in the same lateral side as the South magnetic pole of the other element, so that two parallel magnetic force lines M are formed on the upper space of the module 66. According to this arrangement, the magnetic force lines are directed along the lateral sides of the module 66, so that a pattern revealed on the surface of the substrate becomes an arcuate pattern, which is not identical with the dotted pattern of the circular magnets.
Fig. ô shows an alternative arrangement of the magnetic elements in Fig. 7. In this arrangement, ad~acent magnetic elements 67 and 68 of the module 69 are disposed such that the North magnetic pole of one element is positioned in the same lateral side as the North magnetic pole of the other element, and that the South magnetic pole of one element is positioned in the same lateral side as the South magnetic pole of the other element.
According to this arrangement, the magnetic force lines M are directed in a cross~over form due to a repelling force between the same magnetic poles, resulting in random lines. How~er, due to these random magnetic force lines, a delicate complicated pattern, similar to an arcuate form, appears on the surface of the substrate. Of course, this pattern is not identical with the dotted pattern of the circular magnets.
Fig. 9 shows a modified arrangement utilizing a combination module 75, including two types of magnetic elements. One type consists of ordinary two~pole magnetic elements 61 and 62, and the other type consists of multi-pole magnetic elements 71 and 72. As a result of the combination, the module 75 can create a continuous H-shaped pattern upon the surface of the substrate.
Fig. 10 shows a modified arrangement utilizing a combination module 85, including U-shaped magnets 81, 82 and bar-shaped magnets 83, 84. In these kinds of magnets or magnetic elements, the North magnetic pole and the South magnetic pole are positioned at their distal ends. As shown in Fig. 10, each magnet is perpendicularly disposed to the substrate 10. The upper ends of the magnets are arranged in a grid form, so that the ~AT 16690-1 .
combination module 85 reveals a grid form pattern upon the surface of the substrate 10.
Fig. 11 shows sample characters represented by the method of the invention. In this Pmbodiment, magnetic elements are filled up within a rubber or plastic sheet in a plurality oi striped patterns.
In an application of the method of the invention, a North magnetic pole and a South magnetic pole are easily detected by approaching a compass to the object. Therefore, the miscellaneous arrangements as shown in the drawings are easily prepared and utilized. The magnetic elements can be connected by an adhesive tape or similarly. Since the module of the magnetic elements can be removed easily, ater usage, no damage occurs to the substrate.
Claims (8)
1. A method of forming a patterned coating upon a surface of a substrate, comprising the steps of:
preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements;
bringing said module to close proximity to the reverse side of a substrate:
applying magnetic paint containing powdery magnetic material upon the surface of said substrate to make a wet film thereon; and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module upon the surface of the substrate.
preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements;
bringing said module to close proximity to the reverse side of a substrate:
applying magnetic paint containing powdery magnetic material upon the surface of said substrate to make a wet film thereon; and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module upon the surface of the substrate.
2. A method of forming a patterned coating upon a surface of a substrate, comprising the steps of:
preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements:
applying magnetic paint containing powdery magnetic material upon a surface of a substrate to make a wet film thereon;
bringing said module toward the surface or reverse side of said coated substrate in close vicinity to said wet film while the wet film is fluid; and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module, within the magnetic paint film.
preparing a plurality of separated magnetic elements to be arranged side by side into an arrayed module of the elements:
applying magnetic paint containing powdery magnetic material upon a surface of a substrate to make a wet film thereon;
bringing said module toward the surface or reverse side of said coated substrate in close vicinity to said wet film while the wet film is fluid; and hardening the wet film by baking or drying, thereby providing a continuous pattern corresponding to the configuration pattern of said module, within the magnetic paint film.
3. A method of forming a patterned coating as claimed in claim 1, wherein said magnetic elements comprise rectangular or circular metallic plates each having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and adjacent magnetic elements are disposed such that the North magnetic pole of one element is positioned in close vicinity to the South magnetic pole of the other element.
4. A method of forming a patterned coating as claimed in claim 2, wherein said magnetic elements comprise rectangular or circular metallic plates each having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and adjacent magnetic elements are disposed such that the North magnetic pole of one element is positioned in close vicinity to the South magnetic pole of the other element.
5. A method of forming a patterned coating as claimed in claim 1, wherein said magnetic elements comprise bar-shaped or U-shaped magnets each having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and each magnet is perpendicularly disposed to the substrate.
6. A method of forming a patterned coating as claimed in claim 2, wherein said magnetic elements comprise bar-shaped or U-shaped magnets each having a North magnetic pole and a South magnetic pole situated at the opposite edges thereof, and each magnet is arranged toward the substrate perpendicularly thereto.
7. A method of forming a patterned coating as claimed in claim 1, wherein said magnetic elements are embedded within a rubber or plastic sheet in a plurality of striped patterns.
8. A method of forming a patterned coating as claimed in claim 2, wherein said magnetic elements are embedded within a rubber or plastic sheet in a plurality of striped patterns.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1164807A JPH0330876A (en) | 1989-06-27 | 1989-06-27 | Formation of pattern shape on coated surface |
| JP164807/1989 | 1989-06-27 | ||
| JP331039/1989 | 1989-12-22 | ||
| JP33103989A JP2844232B2 (en) | 1989-12-22 | 1989-12-22 | Method of forming patterned coating film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2019844A1 true CA2019844A1 (en) | 1990-12-27 |
Family
ID=26489768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002019844A Abandoned CA2019844A1 (en) | 1989-06-27 | 1990-06-26 | Forming method of patterned coating |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0406667B1 (en) |
| KR (1) | KR0135274B1 (en) |
| AU (1) | AU631435B2 (en) |
| CA (1) | CA2019844A1 (en) |
| DE (1) | DE69015900T2 (en) |
Families Citing this family (59)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69218582T2 (en) * | 1992-02-21 | 1997-07-10 | Hashimoto Forming Kogyo Co | Painting with magnetically produced pattern and lacquered product with magnetically produced pattern |
| DE4439455A1 (en) * | 1994-11-04 | 1996-05-09 | Basf Ag | Process for the production of coatings with three-dimensional optical effects |
| EP1452242A3 (en) * | 1997-09-08 | 2006-01-18 | E.I. du Pont de Nemours and Company | Patterned release finish |
| US6103361A (en) * | 1997-09-08 | 2000-08-15 | E. I. Du Pont De Nemours And Company | Patterned release finish |
| US7517578B2 (en) | 2002-07-15 | 2009-04-14 | Jds Uniphase Corporation | Method and apparatus for orienting magnetic flakes |
| US7604855B2 (en) | 2002-07-15 | 2009-10-20 | Jds Uniphase Corporation | Kinematic images formed by orienting alignable flakes |
| US7047883B2 (en) | 2002-07-15 | 2006-05-23 | Jds Uniphase Corporation | Method and apparatus for orienting magnetic flakes |
| US7667895B2 (en) | 1999-07-08 | 2010-02-23 | Jds Uniphase Corporation | Patterned structures with optically variable effects |
| US11768321B2 (en) | 2000-01-21 | 2023-09-26 | Viavi Solutions Inc. | Optically variable security devices |
| JP2004502314A (en) | 2000-07-06 | 2004-01-22 | ユナキス・バルツェルス・アクチェンゲゼルシャフト | Apparatus for aligning the magnetization direction of a magnetic coating layer |
| US6902807B1 (en) † | 2002-09-13 | 2005-06-07 | Flex Products, Inc. | Alignable diffractive pigment flakes |
| US6893489B2 (en) * | 2001-12-20 | 2005-05-17 | Honeywell International Inc. | Physical colored inks and coatings |
| US7258900B2 (en) | 2002-07-15 | 2007-08-21 | Jds Uniphase Corporation | Magnetic planarization of pigment flakes |
| US7934451B2 (en) | 2002-07-15 | 2011-05-03 | Jds Uniphase Corporation | Apparatus for orienting magnetic flakes |
| US11230127B2 (en) | 2002-07-15 | 2022-01-25 | Viavi Solutions Inc. | Method and apparatus for orienting magnetic flakes |
| US8025952B2 (en) | 2002-09-13 | 2011-09-27 | Jds Uniphase Corporation | Printed magnetic ink overt security image |
| US7241489B2 (en) | 2002-09-13 | 2007-07-10 | Jds Uniphase Corporation | Opaque flake for covert security applications |
| US7258915B2 (en) | 2003-08-14 | 2007-08-21 | Jds Uniphase Corporation | Flake for covert security applications |
| US7674501B2 (en) | 2002-09-13 | 2010-03-09 | Jds Uniphase Corporation | Two-step method of coating an article for security printing by application of electric or magnetic field |
| US9458324B2 (en) | 2002-09-13 | 2016-10-04 | Viava Solutions Inc. | Flakes with undulate borders and method of forming thereof |
| US9164575B2 (en) | 2002-09-13 | 2015-10-20 | Jds Uniphase Corporation | Provision of frames or borders around pigment flakes for covert security applications |
| EP1493590A1 (en) | 2003-07-03 | 2005-01-05 | Sicpa Holding S.A. | Method and means for producing a magnetically induced design in a coating containing magnetic particles |
| EP1669213A1 (en) * | 2004-12-09 | 2006-06-14 | Sicpa Holding S.A. | Security element having a viewing-angle dependent aspect |
| TWI402106B (en) | 2005-04-06 | 2013-07-21 | Jds Uniphase Corp | Dynamic appearance-changing optical devices (dacod) printed in a shaped magnetic field including printable fresnel structures |
| DE102005019919A1 (en) | 2005-04-27 | 2006-11-16 | Leonhard Kurz Gmbh & Co. Kg | Method of producing color effect images |
| CA2564764C (en) | 2005-10-25 | 2014-05-13 | Jds Uniphase Corporation | Patterned optical structures with enhanced security feature |
| CA2570965A1 (en) | 2005-12-15 | 2007-06-15 | Jds Uniphase Corporation | Security device with metameric features using diffractive pigment flakes |
| US10343436B2 (en) | 2006-02-27 | 2019-07-09 | Viavi Solutions Inc. | Security device formed by printing with special effect inks |
| AU2007201454A1 (en) * | 2006-04-05 | 2007-10-25 | Inoac Corporation | Pattern forming apparatus and pattern forming method |
| JP4283817B2 (en) * | 2006-04-05 | 2009-06-24 | 日本ビー・ケミカル株式会社 | Method for manufacturing pattern forming apparatus |
| CA2592667C (en) | 2006-07-12 | 2014-05-13 | Jds Uniphase Corporation | Stamping a coating of cured field aligned special effect flakes and image formed thereby |
| DK1937415T3 (en) | 2006-10-17 | 2009-06-02 | Sicpa Holding Sa | Process and means for producing a magnetically induced characteristic in a coating containing magnetic particles |
| JPWO2009040895A1 (en) * | 2007-09-26 | 2011-01-13 | 株式会社イノアックコーポレーション | Pattern forming paint and pattern forming method |
| JP2009193069A (en) | 2008-02-13 | 2009-08-27 | Jds Uniphase Corp | Medium for laser printing including optical special effect flake |
| CA2929602A1 (en) | 2013-12-04 | 2015-06-11 | Sicpa Holding Sa | Devices for producing optical effect layers |
| CN102015125B (en) * | 2008-05-07 | 2014-06-25 | 阿克特加雷纳尼亚有限公司 | Magnetic pigment coatings, laminates and method of production thereof |
| CN106925493B (en) | 2012-01-12 | 2021-06-11 | 唯亚威通讯技术有限公司 | Article with dynamic frame formed from aligned pigment flakes |
| CA2913896C (en) * | 2013-06-14 | 2021-04-06 | Sicpa Holding Sa | Permanent magnet assemblies for generating concave field lines and process for creating optical effect coating therewith (inverse rolling bar) |
| TWI641660B (en) | 2013-08-05 | 2018-11-21 | 瑞士商西克帕控股有限公司 | Magnetic or magnetisable pigment particles and optical effect layers |
| US10933442B2 (en) | 2013-12-13 | 2021-03-02 | Sicpa Holding Sa | Processes for producing effects layers |
| EP3174733B1 (en) | 2014-07-30 | 2018-05-09 | Sicpa Holding SA | Belt-driven processes for producing optical effect layers |
| JP6596701B2 (en) | 2014-08-22 | 2019-10-30 | シクパ ホルディング ソシエテ アノニム | Apparatus and method for producing optical effect layer |
| CN106864014B (en) * | 2015-12-10 | 2020-02-28 | 惠州市华阳光学技术有限公司 | Magnet and magnetic orientation device |
| RS62091B1 (en) | 2016-07-29 | 2021-08-31 | Sicpa Holding Sa | Processes for producing effect layers |
| RU2738179C2 (en) | 2016-08-16 | 2020-12-09 | Сикпа Холдинг Са | Methods of producing layers with effect |
| EP3515609B1 (en) | 2016-09-22 | 2020-11-04 | Sicpa Holding Sa | Apparatuses and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles |
| BR112019014955B1 (en) | 2017-01-31 | 2024-02-15 | Sicpa Holding Sa | APPARATUS FOR PRODUCING AN OPTICAL EFFECT LAYER, ROTARY MAGNETIC GUIDANCE CYLINDER, FLAT MAGNETIC GUIDANCE PRINTING UNIT AND USES THEREOF, AND METHOD FOR PRODUCING AN OPTICAL EFFECT LAYER ON A SUBSTRATE, AND METHOD FOR MODIFYING A ROTARY MAGNETIC GUIDANCE CYLINDER |
| TWI772576B (en) | 2018-01-17 | 2022-08-01 | 瑞士商西克帕控股有限公司 | Processes for producing optical effects layers |
| WO2020025482A1 (en) | 2018-07-30 | 2020-02-06 | Sicpa Holding Sa | Assemblies and processes for producing optical effect layers comprising oriented magnetic or magnetizable pigment particles |
| US11577273B2 (en) | 2018-07-30 | 2023-02-14 | Sicpa Holding Sa | Processes for producing optical effects layers |
| TW202100960A (en) | 2019-02-28 | 2021-01-01 | 瑞士商西克帕控股有限公司 | Method for authenticating a magnetically induced mark with a portable device |
| US20230201872A1 (en) | 2020-05-26 | 2023-06-29 | Sicpa Holding Sa | Magnetic assemblies and methods for producing optical effect layers comprising oriented platelet-shaped magnetic or magnetizable pigment particles |
| BR112022025995A2 (en) | 2020-06-23 | 2023-01-17 | Sicpa Holding Sa | METHODS FOR PRODUCING OPTICAL EFFECT LAYERS COMPRISING MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES |
| AR123351A1 (en) | 2020-09-02 | 2022-11-23 | Sicpa Holding Sa | SECURITY DOCUMENTS OR ARTICLES INCLUDING OPTICAL EFFECT COATINGS COMPRISING MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES AND METHODS FOR PRODUCING SUCH OPTICAL EFFECT LAYERS |
| AR123354A1 (en) | 2020-09-02 | 2022-11-23 | Sicpa Holding Sa | SECURITY MARK, METHOD AND DEVICE FOR READING THE SECURITY MARK, SECURITY DOCUMENT MARKED WITH THE SECURITY MARK AND METHOD AND SYSTEM FOR VERIFYING SUCH SECURITY DOCUMENT |
| TW202239482A (en) | 2021-03-31 | 2022-10-16 | 瑞士商西克帕控股有限公司 | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
| AU2022289987A1 (en) | 2021-06-11 | 2024-01-18 | Sicpa Holding Sa | Optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers |
| WO2023161464A1 (en) | 2022-02-28 | 2023-08-31 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
| WO2024028408A1 (en) | 2022-08-05 | 2024-02-08 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
-
1990
- 1990-06-26 AU AU57816/90A patent/AU631435B2/en not_active Ceased
- 1990-06-26 EP EP90112121A patent/EP0406667B1/en not_active Expired - Lifetime
- 1990-06-26 DE DE69015900T patent/DE69015900T2/en not_active Expired - Fee Related
- 1990-06-26 CA CA002019844A patent/CA2019844A1/en not_active Abandoned
- 1990-06-26 KR KR1019900009446A patent/KR0135274B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0406667B1 (en) | 1995-01-11 |
| KR910000250A (en) | 1991-01-29 |
| EP0406667A1 (en) | 1991-01-09 |
| AU5781690A (en) | 1991-01-03 |
| KR0135274B1 (en) | 1998-04-22 |
| DE69015900T2 (en) | 1995-06-22 |
| AU631435B2 (en) | 1992-11-26 |
| DE69015900D1 (en) | 1995-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2019844A1 (en) | Forming method of patterned coating | |
| EP1787728B1 (en) | Magnetic plate for printing of optical effects | |
| EP0556449B1 (en) | Painting with magnetically formed pattern and painted product with magnetically formed pattern | |
| US3791864A (en) | Method of ornamenting articles by means of magnetically oriented particles | |
| US10029279B2 (en) | Optical device having an illusive optical effect and method of fabrication | |
| WO2002090002A3 (en) | Methods for producing imaged coated articles by using magnetic pigments | |
| CA2449832A1 (en) | Printed bias magnet for electronic article surveillance marker | |
| DE69009554D1 (en) | Process for modifying the surface of a magnetic particle. | |
| DE69501299D1 (en) | Process for producing a substrate with protruding portions | |
| JP2844232B2 (en) | Method of forming patterned coating film | |
| JPH0330876A (en) | Formation of pattern shape on coated surface | |
| JPH0515841A (en) | Method for forming patterned coating film | |
| DE1957876A1 (en) | Adhesive board for the detachable attachment of flat structures such as Symbols, marks, etc. | |
| JPH03104102A (en) | Method of applying magnetized layer and object having magnetized layer | |
| JP3189060B2 (en) | Pattern expression method | |
| JPH09327651A (en) | Manufacture of resin product with pattern | |
| JPH0514299Y2 (en) | ||
| JPS6256139A (en) | Synthetic-resin molded shape | |
| JPS6484406A (en) | Manufacture of thin film magnetic head | |
| JPH0544860Y2 (en) | ||
| US20030010429A1 (en) | Applique transfer system | |
| EP0169525A3 (en) | Method of manufacturing layered magnetic record carriers | |
| JPH04225871A (en) | Formation of pattern coating film | |
| Litvinenko | Definition of magnetic anisotropy in sheet steel with magnetic powder method | |
| GB2382451A (en) | Manufacturing flexible magnetic tape |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |