Drawing pen based on magnetic pigment and electromagnetic plate drawing device and method

Abstract

The invention provides a drawing pen based on magnetic pigment and an electromagnetic board drawing device and method, the drawing pen is a special pen containing four pigment cavities, each pigment cavity contains the magnetic pigment of white or one of three primary colors, color mixing is controlled through a material mixing controller, and drawing is conducted by adjusting the magnetic field intensity and range of an electromagnetic board during drawing. The electromagnetic plate is composed of an electromagnetic plate, a coil and drawing paper, a magnetic field corresponding to pattern information is generated through the magnetic field control device, and magnetic pigment is attracted for drawing. The magnetic field control device inputs pattern information through the computer system, and the computer system converts the pattern information into recognizable information of the magnetic field control device. The drawing step comprises the steps of drawing pattern preparation, magnetic template preparation, magnetic pigment preparation, color preparation and pattern drawing. The painting device has the advantages of being rich in color combination, high in painting efficiency, large in creation freedom degree and the like, the magnetic pigment can be recycled, the pen point can be replaced, and the electromagnetic plate can be programmed.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic force control, in particular to a drawing pen and electromagnetic board drawing device and method based on magnetic pigment. Background Art

[0002] In the field of painting and writing tools, there is a constant pursuit of innovation and versatility to meet the increasingly diverse needs of users. Traditional pens usually only provide a single color of ink or pigment. When multiple colors and effects are required for creation, it is often necessary to frequently change various pens or use multiple pens of different colors, which not only increases the complexity of operation, but also limits the fluency of creation.

[0003] With the development of science and technology, magnetic materials have been widely used in various fields. In terms of painting tools, the use of magnetic pigments and the principle of magnetic attraction to control the outflow of pigments has brought new possibilities for painting. However, existing painting tools have many shortcomings in handling multi-color magnetic pigments, and cannot effectively recycle magnetic pigments, resulting in a waste of resources.

[0004] Although existing multi-color pens can provide several different color options, they usually switch between different color refills or ink cartridges through a simple mechanical structure, making it difficult to precisely control the amount of each color of pigment, and it is also impossible to mix them in the pen to obtain more unique colors. Moreover, these pens often rely on gravity or a simple pressure system to control the outflow of pigments, which can easily lead to uneven pigment outflow or accidental leakage. In addition, for users who need to precisely control colors and perform complex painting creations, existing tools cannot meet their requirements for color accuracy, mixing effects, and ease of operation. At the same time, in today's art creation and writing fields, people have increasingly higher requirements for the versatility and adaptability of tools. Traditional pens usually only have one fixed pen tip form, which in many cases limits the creator's play and the diversity of application scenarios. Different painting styles, techniques, and writing needs often require pen tips of different shapes and characteristics. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a drawing pen and electromagnetic board painting device and method based on magnetic pigments. This device can combine multi-color pigments, precise control and magnetic suction technology, aiming to provide users with a more convenient, efficient and accurate painting and writing tool.

[0006] In order to realize the above-mentioned technical features, the purpose of the present invention is realized as follows: a drawing pen and electromagnetic board painting device based on magnetic pigments, comprising a drawing pen, an electromagnetic board, a magnetic field control device and a computer system; the drawing pen contains four pigment chambers, each of which contains magnetic pigments of white or one of the three primary colors, and each color of the pigments is controlled by a mixing controller to enter the mixing chamber for mixing and color adjustment, and then the magnetic field strength and magnetic field range of the electromagnetic board are adjusted during painting; the electromagnetic board generates a magnetic field strength and a magnetic field range corresponding to the pattern information through the magnetic field control device, attracting the magnetic pigment to drip onto the drawing paper for painting; the magnetic field control device inputs the required pattern information in the form of an electrical signal through the computer system, and then transmits it to the electromagnetic board; the computer system converts the pattern information of the required object into information that can be recognized by the magnetic field control device, and controls the electromagnetic board to generate a magnetic field corresponding to the pattern.

[0007] The drawing pen is made of aluminum alloy material, and consists of magnetic pigment, pigment chamber, tail cover, feeding door, first valve, mixing chamber, pigment stirrer, second valve, capillary pen head, observation window and mixing controller; the pigment chamber contains magnetic pigment, and the pigment is replenished by opening the feeding door; the pigment stirrer mixes and colors the pigment entering through the first valve in the mixing chamber, and after the color is mixed, the capillary drips the pigment through the opening of the second valve; the observation window is made of transparent PVC material, so that the mixing and use of the pigment can be observed outside the pen; the mixing controller controls the opening and closing of the first valve and the second valve of each pigment chamber to perform precise pigment mixing and ink discharge.

[0008] The magnetic pigment is prepared by first immersing tiny black magnetic particles in pigment for coloring, and then adding the colored magnetic particles and a surfactant into the liquid pigment to mix the magnetic pigment, or directly adding transparent magnetic particles and a surfactant into the liquid pigment to mix the magnetic pigment; the particle sizes of the magnetic particles in magnetic pigments of different colors are different.

[0009] The pigment chamber is made of PVC material, and there are four in the drawing pen, each containing one of the three primary colors or white. The pigment is replenished through the filling cover, and the pigment is finely mixed by opening and closing the first valve; The tail cap is made of rubber material, and its size and shape are designed to fit the tail of the pen body, ensuring that it fits tightly without leaving any gaps after the tail cap is put on, thereby protecting the material filling door and preventing the magnetic pigment from flowing back or evaporating; The first valve is located between each pigment chamber and the mixing chamber, and is controlled to be opened and closed by the mixing controller. When it is opened, it carries an electric current, which can attract the magnetic pigment in the pigment chamber.

[0010] The mixing chamber is made of PTFE material, and can accommodate the magnetic pigment dripping through the first valve and mix the pigment therein; The pigment stirrer is made of aluminum alloy material and is controlled by a mixing controller to mix and color the magnetic pigment in a mixing chamber.

[0011] The second valve is located between the mixing chamber and the capillary pen tip. When the pigments are mixed, the valve is closed. After the mixing is completed, the valve is opened by the mixing controller, and then the pigments are attracted by the magnetic field of the electromagnetic plate and dropped by the capillary. The capillary pen tip is composed of a plurality of capillaries, and the pen tip is made of aluminum alloy, so that it can be used for drawing on drawing paper; The mixing controller is placed outside the pen body and works through a built-in battery. The user can operate the first valve, the second valve, and the paint stirrer to open and close.

[0012] The electromagnetic plate is composed of an electromagnetic iron plate, a coil and drawing paper; the current is input into the electromagnetic plate through the magnetic field control device to control the current size in the coil, so that the magnetic field strength and magnetic field range generated by the electromagnetic plate can be accurately adjusted; The drawing paper is rice paper.

[0013] The magnetic field control device inputs the required pattern information in the form of electrical signals through a computer system and then transmits it to the electromagnetic plate.

[0014] The computer system converts the pattern information of the object required by the user into information recognizable by the magnetic field control device, and then controls the electromagnetic plate to generate a magnetic field of the corresponding pattern.

[0015] The magnetic pigment-based drawing pen and electromagnetic board drawing device and use method include the following steps: Step 1: Prepare the drawing pattern, input the pattern information you want to draw into the computer system; Step 2: Prepare the magnetic template, turn on the magnetic field control device, input the pattern information in the form of electrical signals through the computer system, and then transmit it to the electromagnetic plate to form a magnetic field, and lay the drawing paper on it in advance; Step 3: Prepare the magnetic pigments. Inject the magnetic pigments of the four basic colors needed into the pigment chamber through the filling door. After filling, cover the tail cap. Step 4: Prepare the colors, control the mixing controller, open and close the first valve under each pigment chamber appropriately, control the amount of pigment blending through the opening and closing time of these valves, and start the pigment agitator in the mixing chamber to mix and adjust the pigments. The user confirms whether the pigments are mixed through the observation window; Step 5: Draw the pattern. When drawing, open the second valve through the mixing controller to allow the mixed magnetic pigment to enter the capillary pen head. The user can use the drawing pen to accurately draw the desired pattern on the drawing paper.

[0016] The present invention has the following beneficial effects: 1. The present invention innovatively combines the drawing pen with the electromagnetic board. The user can adjust the magnetic field strength at any time as needed to control the outflow speed and flow rate of the magnetic pigment, thereby creating different line thicknesses and color concentrations, bringing more possibilities for painting creation. For example, for fine paintings that require weaker magnetic attraction, the current can be reduced to reduce the magnetic field strength; and for large-area filling or special effects that require stronger magnetic force, the current can be increased to enhance the magnetic field.

[0017] 2. The present invention can achieve precise control of the outflow of magnetic pigments through micro-valves and precise control mechanisms, and adjust the proportion of each color in very small increments, thereby creating almost unlimited color combinations, greatly improving the accuracy and customizability of colors.

[0018] 3. The present invention innovatively designs a special mixing and stirring area in the pen, so that the four colors of magnetic pigments can be fully mixed directly in the pen without the need for additional tools or steps, which greatly improves the efficiency of painting and the fluency of creation.

[0019] 4. The present invention innovatively uses the design of electromagnetic plate to adjust the magnetic field strength. By adjusting the current, users can choose the appropriate magnetic field strength and magnetic field range according to different painting needs, providing more creative freedom and flexibility, and can adapt to different painting styles and techniques. For example, the direction of the magnetic field can be controlled to make the paint flow in the horizontal, vertical or inclined direction to achieve unique lines and patterns.

[0020] 5. The innovatively designed observation window of the present invention allows the user to intuitively see the flow and mixing state of the paint in the pen, clearly understand whether the mixing is uniform and whether the required mixing degree has been reached, and facilitate the user to grasp the painting progress and effect.

[0021] 6. The electromagnetic plate used in the present invention can also realize complex magnetic field control through programming. The user can use specific software or programming language in the computer system to design the change pattern of the magnetic field, thereby realizing the automated painting process. For example, a program can be written to control the change of magnetic field strength and direction, so that the pigment flows along a predetermined trajectory to form complex patterns and images. Programmability provides users with more creative possibilities and can achieve more complex and delicate painting effects.

[0022] 7. The pen head design of the drawing pen in the present invention can be freely replaced, such as the ordinary pen head can be replaced with a brush head. During the painting process, the user can paint on the rice paper according to his own needs. By accurately controlling the change of the magnetic field and the use of the brush head, the magnetic pigment can form clear lines on the rice paper. Due to the fiber structure of the rice paper, the pigment will penetrate and diffuse along the texture of the fiber, so that the edge of the line presents a natural smudge effect, which increases the artistic sense and expressiveness of the line. It is suitable for drawing some works with the style of traditional Chinese ink painting, such as drawing freehand landscape lines, which can better reflect the ethereal and distant artistic conception of the landscape.

[0023] 8. When the present invention is used for painting, if the painting is not done on drawing paper but on some special materials, the magnetic pigment can be recovered. Since the particle sizes of the magnetic particles in the magnetic pigments of different colors are different, the magnetic pigments of different particle sizes can be separated from the mixture by utilizing the different sedimentation speeds of the magnetic pigments in the centrifugal field. The centrifugal separation method can achieve the separation and recovery of pigments of different particle sizes by adjusting the size of the centrifugal force and the centrifugal time.

[0024] 9. The present invention can be designed for the same type of font practice. The existing practice mode of copybooks is single and has little effect. The electromagnetic board is used to present the characters in the form of a magnetic template, so that the ink no longer falls due to gravity, but falls on the paper under the magnetic attraction of the magnetic template. The magnetic template is used to attract the magnetic ink pigment to write the ink at the designated position, which can make the writing of the calligrapher more standardized. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is an overall schematic diagram of the device of the present invention.

[0027] Figure 2 It is a schematic top view of the electromagnetic plate of the device of the present invention.

[0028] Figure 3 It is a schematic cross-sectional view of the writing pen of the device of the present invention.

[0029] Figure 4 It is a schematic diagram of the writing pen of the device of the present invention.

[0030] In the figure: a drawing pen 1, a magnetic pigment 101, a pigment chamber 102, a tail cover 103, a feeding door 104, a first valve 105, a mixing chamber 106, a pigment stirrer 107, a second valve 108, a capillary pen head 109, an observation window 110, a mixing controller 111, an electromagnetic plate 2, an electromagnetic iron plate 21, a coil 22, a drawing paper 23, a magnetic field control device 3, and a computer system 4. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0032] Embodiment 1: See also Figure 1-4 , a drawing pen and electromagnetic board painting device based on magnetic pigments, including a drawing pen 1, an electromagnetic board 2, a magnetic field control device 3 and a computer system 4. The drawing pen 1 is a special pen containing four pigment chambers 102, each pigment chamber 102 contains a magnetic pigment 101 of white or one of the three primary colors, and each color pigment is controlled by a mixing controller 111 to enter a mixing chamber 106 for mixing and coloring, and then the magnetic field strength and magnetic field range of the electromagnetic board are adjusted during painting; the electromagnetic board 2 generates a magnetic field strength and magnetic field range corresponding to the pattern information through the magnetic field control device 3, attracting the magnetic pigment 101 to drip on the drawing paper 23 for painting; the magnetic field control device 3 inputs the required pattern information in the form of an electrical signal through the computer system 4, and then transmits it to the electromagnetic board 2; the computer system 4 converts the pattern information of the required object into information that can be recognized by the magnetic field control device 3, and controls the electromagnetic board 2 to generate a magnetic field corresponding to the pattern. This device can combine multi-color pigments, precise control and magnetic attraction technology, aiming to provide users with a more convenient, efficient and accurate painting and writing tool.

[0033] Furthermore, the drawing pen 1 is mainly made of aluminum alloy material, and consists of a magnetic pigment 101, a pigment chamber 102, a tail cover 103, a feeding door 104, a first valve 105, a mixing chamber 106, a pigment stirrer 107, a second valve 108, a capillary pen head 109, an observation window 110 and a mixing controller 111; the pigment chamber 102 contains a magnetic pigment 101, and the pigment is replenished by opening the feeding door 104; the pigment stirrer 107 mixes and colors the pigment entering through the first valve 105 in the mixing chamber 106, and after the color is adjusted, the pigment is dripped by the capillary through the opening of the second valve 108; the observation window 110 is made of transparent PVC material, so that the mixing and use of the pigment can be observed outside the pen; the mixing controller 111 can accurately mix the pigment and discharge the ink by controlling the opening and closing of the first valve 105 and the second valve 108 of each pigment chamber 102.

[0034] Furthermore, the magnetic pigment 101 is prepared by first immersing tiny black magnetic particles in pigment for coloring, and then adding the colored magnetic particles and a surfactant into the liquid pigment to mix the obtained magnetic pigment, or by directly adding transparent magnetic particles and a surfactant into the liquid pigment to mix the obtained magnetic pigment; the particle sizes of the magnetic particles in the magnetic pigments 101 of different colors are different.

[0035] Furthermore, the paint chamber 102 is made of PVC material, and there are four of them in the drawing pen 1, each containing one of the three primary colors or white. The paint is replenished through the filling cover 104, and the paint is finely mixed by opening and closing the first valve 105.

[0036] Furthermore, the tail cap 103 is made of rubber material, and its size and shape are designed to perfectly fit the tail of the pen body, ensuring that it can fit tightly without leaving any gaps after the tail cap is put on, thereby protecting the feeding door 104 and preventing the magnetic pigment 101 from flowing back or evaporating.

[0037] Furthermore, the first valve 105 is located between each pigment chamber 102 and the mixing chamber 106 , and is controlled to be opened and closed by the mixing controller 111 . When opened, it carries an electric current, which can attract the magnetic pigment 101 in the pigment chamber 102 .

[0038] Furthermore, the mixing chamber 106 is made of PTFE material, and can accommodate the magnetic pigment 101 dripping through the first valve 105 and mix the pigment therein.

[0039] Furthermore, the paint agitator 107 is made of aluminum alloy material and is controlled by a mixing controller 111 to mix and color the magnetic paint 101 in the mixing chamber 106 .

[0040] Furthermore, the second valve 108 is located between the mixing chamber 106 and the capillary pen tip 109. When the pigments are mixed, the valve is closed. After the mixing is completed, the valve is opened by the mixing controller 111, and then the magnetic field of the electromagnetic plate 2 is attracted, and the pigment falls down through the capillary.

[0041] Furthermore, the capillary pen tip 109 is composed of a plurality of capillaries, and the pen tip is made of aluminum alloy, so that it can be used for drawing on the drawing paper 23.

[0042] Furthermore, the observation window 110 is disposed outside the drawing pen 1, corresponding to the location of the mixing chamber 106 in the pen, and is made of a transparent PVC material, so that the user can observe the mixing and use of the pigments outside the pen.

[0043] Furthermore, the mixing controller 111 is placed outside the pen body and works by a built-in battery, and the user can use it to operate the opening and closing of the first valve 105 and the second valve 108 , as well as the operation of the paint stirrer 107 .

[0044] Furthermore, the electromagnetic plate 2 is composed of an electromagnetic plate 21, a coil 22 and a drawing paper 23; the current is input into the electromagnetic plate 2 through the magnetic field control device 3 to control the current in the coil 22, so that the magnetic field strength and magnetic field range generated by the electromagnetic plate 2 can be accurately adjusted. For example, for fine paintings that require weaker magnetic attraction, the current can be reduced to reduce the magnetic field strength; and for large-area filling or special effects that require stronger magnetic force, the current can be increased to enhance the magnetic field. The magnetic field can be adjusted in a personalized manner according to the painting habits and skills of different users, thereby improving the flexibility and controllability of painting.

[0045] Furthermore, the magnetic field control device 3 inputs the required pattern information in the form of an electrical signal through the computer system 4, and then transmits it to the electromagnetic plate 2. By changing the direction of the current in the coil 22, the direction of the magnetic field generated by the electromagnetic plate 2 can be changed. This allows the user to guide the flow of the magnetic pigment 101 in different directions to create more diverse painting effects. For example, the direction of the magnetic field can be controlled to make the pigment flow in a horizontal, vertical or inclined direction to achieve unique lines and patterns.

[0046] Furthermore, the computer system 4 converts the pattern information of the object required by the user into information recognizable by the magnetic field control device 3, and then controls the electromagnetic plate 2 to generate a magnetic field of the corresponding pattern.

[0047] Embodiment 2: The drawing pen and electromagnetic board drawing method based on magnetic pigments is characterized by comprising the following steps: Step 1: Drawing pattern preparation, input the pattern information you want to draw into the computer system 4.

[0048] Step 2: Prepare the magnetic template, turn on the magnetic field control device 3, input the pattern information in the form of electrical signals through the computer system 4, and then transmit it to the electromagnetic plate 2 to form a magnetic field, and lay the drawing paper 23 on it in advance.

[0049] Step 3: Preparation of magnetic pigments: inject the magnetic pigments 101 of the four basic colors required into the pigment chamber 102 through the filling door 104 , and cover the tail cover 103 after the filling is completed.

[0050] Step 4: Prepare the colors, control the mixing controller 111, open and close the first valve 105 under each pigment chamber 102 appropriately, control the amount of pigment blending by the opening and closing time of these valves, and open the pigment agitator 107 in the mixing chamber 106 to mix and adjust the pigments. The user confirms whether the pigments are mixed through the observation window 110.

[0051] Step 5: Draw a pattern. When drawing, the second valve 108 is opened through the mixing controller 111 to allow the mixed magnetic pigment 101 to enter the capillary pen head 109. The user can use the drawing pen 1 to accurately draw the desired pattern on the drawing paper 23.

Claims

1. A drawing pen and electromagnetic board drawing device based on magnetic pigment, characterized in that: The invention comprises a drawing pen (1), an electromagnetic plate (2), a magnetic field control device (3) and a computer system (4); the drawing pen (1) contains four pigment chambers (102), each pigment chamber (102) contains a magnetic pigment (101) of white or one of the three primary colors, and the pigments of each color are controlled by a mixing controller (111) to enter a mixing chamber (106) for mixing and coloring, and then the magnetic field strength and magnetic field range of the electromagnetic plate are adjusted during painting; the electromagnetic plate (2) generates a magnetic field strength and magnetic field range corresponding to pattern information through the magnetic field control device (3), attracting the magnetic pigment (101) to drip onto a drawing paper (23) for painting; the magnetic field control device (3) inputs the required pattern information in the form of an electrical signal through the computer system (4), and then transmits the electrical signal to the electromagnetic plate (2); the computer system (4) converts the pattern information of the required object into information that can be recognized by the magnetic field control device (3), and controls the electromagnetic plate (2) to generate a magnetic field corresponding to the pattern.

2. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 1, characterized in that: The drawing pen (1) is made of an aluminum alloy material, and comprises a magnetic pigment (101), a pigment chamber (102), a tail cover (103), a feeding door (104), a first valve (105), a mixing chamber (106), a pigment stirrer (107), a second valve (108), a capillary pen head (109), an observation window (110), and a mixing controller (111); the pigment chamber (102) contains the magnetic pigment (101), and the pigment is replenished by opening the feeding door (104); The pigment agitator (107) mixes and colors the pigment entering through the first valve (105) in the mixing chamber (106). After the coloring is completed, the pigment is dripped down through the capillary tube by opening the second valve (108). The observation window (110) is made of transparent PVC material so that the mixing and use of the pigment can be observed outside the pen. The mixing controller (111) controls the opening and closing of the first valve (105) and the second valve (108) of each pigment chamber (102) to achieve accurate pigment mixing and ink discharge.

3. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 2, characterized in that: The magnetic pigment (101) is prepared by first immersing fine black magnetic particles in pigment for coloring, and then adding the colored magnetic particles and a surfactant into the liquid pigment to mix the obtained magnetic pigment, or by directly adding transparent magnetic particles and a surfactant into the liquid pigment to mix the obtained magnetic pigment; the particle sizes of the magnetic particles in the magnetic pigments (101) of different colors are different.

4. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 2, characterized in that: The pigment chamber (102) is made of PVC material. There are four pigment chambers in the drawing pen (1), each containing one of the three primary colors or white. The pigment is replenished through the replenishing cover (104), and the pigment is finely mixed by opening and closing the first valve (105); The tail cap (103) is made of rubber material, and its size and shape are designed to fit the tail of the pen body, ensuring that the tail cap fits tightly without leaving any gaps after being covered, thereby protecting the material filling door (104) and preventing the magnetic pigment (101) from flowing back or evaporating; The first valve (105) is located between each pigment chamber (102) and the mixing chamber (106), is opened and closed by a mixing controller (111), and carries an electric current when opened, thereby being able to attract the magnetic pigment (101) in the pigment chamber (102).

5. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 2, characterized in that: The mixing chamber (106) is made of PTFE material and is capable of accommodating the magnetic pigment (101) dripping through the first valve (105) and mixing the pigment therein; The pigment stirrer (107) is made of an aluminum alloy material and is controlled by a mixing controller (111) to mix and color the magnetic pigment (101) in the mixing chamber (106).

6. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 2, characterized in that: The second valve (108) is located between the mixing chamber (106) and the capillary pen tip (109). When the pigments are mixed, the valve is closed. After the mixing is completed, the valve is opened by the mixing controller (111), and then the pigment is attracted by the magnetic field of the electromagnetic plate (2) and falls down through the capillary. The capillary pen tip (109) is composed of a plurality of capillaries and is made of an aluminum alloy, so that it can be used for drawing on drawing paper (23); The mixing controller (111) is placed outside the pen body and operates through a built-in battery. The user can operate the first valve (105), the second valve (108) to open and close, and the paint stirrer (107) to operate.

7. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 1, characterized in that: The electromagnetic plate (2) is composed of an electromagnetic plate (21), a coil (22) and drawing paper (23); a current is input into the electromagnetic plate (2) through the magnetic field control device (3) to control the current in the coil (22), so that the magnetic field intensity and magnetic field range generated by the electromagnetic plate (2) can be accurately adjusted; The drawing paper (23) is rice paper.

8. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 1, characterized in that: The magnetic field control device (3) inputs the required pattern information in the form of an electrical signal through a computer system (4), and then transmits the electrical signal to the electromagnetic plate (2).

9. A drawing pen and electromagnetic board drawing device based on magnetic pigment according to claim 1, characterized in that: The computer system (4) converts the pattern information of the object required by the user into information recognizable by the magnetic field control device (3), and then controls the electromagnetic plate (2) to generate a magnetic field of the corresponding pattern.

10. The magnetic pigment-based drawing pen and electromagnetic board drawing device and use method according to any one line of claim 19, characterized in that: The following steps are involved: Step 1: Drawing pattern preparation, input the pattern information you want to draw into the computer system (4); Step 2: Prepare the magnetic template, turn on the magnetic field control device (3), input the pattern information in the form of electrical signals through the computer system (4), and then transmit it to the electromagnetic plate (2) to form a magnetic field, and lay the drawing paper (23) on it in advance; Step 3: preparing magnetic pigments, injecting the magnetic pigments (101) of the four basic colors required into the pigment chamber (102) through the filling door (104), and closing the tail cover (103) after the filling is completed; Step 4: Prepare the colors, control the mixing controller (111), open and close the first valve (105) under each color chamber (102) appropriately, control the amount of color blending by the opening and closing time of these valves, and start the color stirrer (107) in the mixing chamber (106) to mix and adjust the color of the color, and the user confirms whether the color is mixed through the observation window (110); Step 5: Drawing a pattern. When drawing, the second valve (108) is opened through the mixing controller (111) to allow the mixed magnetic pigment (101) to enter the capillary pen head (109). The user can use the drawing pen (1) to accurately draw the desired pattern on the drawing paper (23).

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