JPH02111597A - Magnetic display writing utensil and magnetic display with ghost preventive mechanism - Google Patents

Abstract

PURPOSE:To write a sharp line having a width according to the length of a contact edge by a method wherein an end face of a magnetic display writing utensil which alters the parallel and vertical polarity orientation of magnetic pieces contained in microcapsules to form a shade contrast image is made of a rectangular permanent magnet. CONSTITUTION:A writing utensil 1 is provided with a plastic plate 6 bonded on one surface of a rubber magnet 2. Microcapsules 18 containing flake-form magnetic pieces 17 dispersed in a liquid are applied on a black substrate 18. The magnetic pole surface of the rubber magnet is slid on a display surface 20 of a magnetic display 15 provided with a transparent protective film 19, whereby the magnetic pieces 17 are oriented vertically. Thereafter, a contact part of the writing utensil 1 is abutted and slid on the display surface 20, whereby the magnetic pieces 17 of a slide locus part are oriented horizontally to form a light color. In this manner, a line or image of a light color is written and displayed on the display surface 20 of a dark color.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a magnetic display having a display surface formed by coating a substrate with a microcapsule coating layer containing flexible magnetic pieces dispersed in a liquid. Prevents writing and ghosting by locally converting vertically or horizontally oriented magnetic pieces to horizontal or vertical orientation to display characters or other images on the display surface! I! It features a 6i display with a bridge.

[Prior Art] By converting the ti orientation of the magnetic piece in the microcapsule from vertical to horizontal or from horizontal to vertical, the incident light is absorbed or reflected to form a bright contrast image between the two. There is a magnetic display system. This magnetic display is composed of a magnetic sheet in which microcapsules each containing magnetic flakes dispersed in a liquid are layered on a black substrate. When an external magnetic field is applied to this magnetic sheet to orient the magnetic pieces perpendicularly to the magnetic sheet surface, light incident from the top surface of the magnetic sheet passes between the magnetic pieces and is absorbed by the black substrate, so the magnetic sheet surface It looks like an Aki black background. Similarly, when a magnetic field is applied from the outside to orient the magnetic piece horizontally to the surface of the magnetic sheet, the light incident from the top surface of the magnetic sheet hits the surface of the magnetic sheet and is reflected, becoming reflected light and exiting from the magnetic sheet. Therefore, the surface of the magnetic sheet appears to have a clear metallic luster.

Conventionally, in the above magnetic sheet or magnetic display,
A permanent rod-shaped pen with a hemispherical tip used as a writing tool that displays characters or other images on a magnetic sheet surface, that is, a display surface, by locally reorienting a vertically or horizontally oriented magnetic piece horizontally or vertically. Magnets are used (Figure 6)
.

[Problem H to be solved by the invention] According to the above-mentioned conventional magnetic display writing tool, since the tip portion is semispherical, the contact between the writing tool and the display surface of the magnetic display is a point contact. , the lines of magnetic force are diffused and the magnetic force around the point contact part of the writing tool affects the magnetic piece around the contact part, causing a ghost around the area, making it impossible to write a clear line, and because it is a point contact. There is a problem that thick lines are written more poorly than thin lines.

The present invention solves the above-mentioned problems, and provides a magnetic display writing tool and a ghost prevention mechanism that allow thin and thick lines to be clearly written on a magnetic display.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a magnetic disk having a display surface formed by coating a substrate with a microcapsule coating layer containing flake-like magnetic pieces dispersed in a liquid. In the 7-ray, the end surface is square as a device for displaying characters or other images on the display surface by locally changing the orientation of a vertically or horizontally oriented magnetic piece to a horizontal or vertical direction. It is formed by a permanent magnet.

As a writing tool that horizontally orients a magnetic piece that is oriented vertically TIx to display l-indication, it can be used as a writing tool for displaying 1 integer by inserting it in the thickness direction on a base material with a rectangular end surface. The N field side or the S field side in the thickness direction, or the adjacent surface of this side, was used as the display surface contact part of the 6i display.

In addition, as a writing tool that vertically orients a horizontally oriented magnetic piece to write and display, a device with a rectangular end surface is magnetized in the length direction, and the sides of the end surface in the length direction or the sides of the device are magnetized. Proximity surface to 66
This was used as the display surface contact part of the air display.

Moreover, it is preferable that the end face is rectangular, and it is preferable that the permanent magnet is a rubber magnet.

Furthermore, one frame was equipped with a ghost prevention device consisting of a magnetic plate provided on the back side of the display surface of the magnetic display.

[Function] As a magnetic display writing tool, the end face is formed by a square permanent magnet, so the lines of magnetic force are focused on the sides of this end face,
By using one of the sides where the magnetic field is focused or the surface near the side as the display surface contact part of the magnetic display, a strong magnetic field will come into contact with the display surface, so it is difficult to move the magnetic piece from the perpendicular direction. It is ensured that the display surface is oriented horizontally or vertically from the horizontal, and since the contact with the display surface is a line contact in the side direction of the end face of the permanent magnet forming the writing R, this contact portion The magnetic force is constant, so it is possible to draw a clear line with almost no ghosting, the width of which corresponds to the length of the side in contact. By changing the length of the sides, clear lines from thin lines to large lines can be drawn.

In the writing tool,! ! As a writing tool for horizontally oriented magnetic strips for writing and displaying, we used a base material with a rectangular end surface that was magnetized in the thickness direction, so that the magnetization direction on the end surface was in the thickness direction. From the Mizuru N1 suspension to the S pole of the other end, parallel to the end surface! The place is flowing. Then, N of the end face
Since the side on the pole side or the S pole side or the adjacent surface of this part is used as the display surface contact part of the magnetic display, the chain part is applied to the display surface where the magnetic pieces are vertically oriented and 11! If you work hard, you will get the same result! i
The magnetic pieces of the 18-movement locus section that are oriented horizontally are oriented horizontally. In addition, in the above-mentioned writing tool, the horizontally oriented magnetic piece is vertically oriented to write and display, and the base material whose end face is rectangular is magnetized in the length direction, so the magnetic field is A It flows in that direction. Then, 1 of the side of the end face in the length direction
Or, since the adjacent surface of that side is used as the display surface contact part of the magnetic display, touch the chain part to the display surface where the magnetic piece is horizontally oriented! When it is moved, the magnetic pieces in the sliding trajectory are oriented in the vertical direction. Furthermore, since a magnetic plate is provided on the back side of the display surface of the magnetic display, in the case of writing in which a horizontally oriented magnetic piece is oriented vertically, the contact part of the writing tool that is brought into contact with the display surface A magnetic field different from the magnetic pole is generated on the magnetic plate f, and as a result, the magnetic field from the contact portion is focused and flows perpendicularly through the magnetic piece, preventing the lines of magnetic force from dispersing. Perfect vertical alignment of only the magnetic pieces can be obtained, allowing clear lines and images to be displayed without ghosts.

[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

Figures M1 and M2 respectively show the magnetic display writing tool according to the present invention.

The writing tool 1 shown in Figs. hand,
This writing tool 1 is written on a rod-shaped rubber base material with a rectangular end surface in the thickness direction (in the direction of the arrow in the figure). ! ! It is formed by a magnetized rubber magnet 2. The writing tool 1 formed by such a rubber magnet 2 has a side 3 on the Neff1 side in the thickness direction (the proximal surface 4 of the side) as a magnetic display surface contact portion 5 serving as a writing tip (pen tip). The writing tool 1 shown in Figure 1 (A) shows an embodiment in which the side 3 is the display surface contact part 5, and the writing tool 1 shown in Figure 1 (B)
The writing tool 1 shown in FIG. 1 shows an embodiment in which the proximal surface 4 of the side 3 is a display surface contacting part 5. In addition, 6 in the figure shows a plastic plate fixed to one surface of the rubber magnet 2 to maintain the shape of the rubber magnet 2.・Nikku board, 7
is a holder. In the above embodiment, the writing tool 1 has a rod shape with a rectangular end surface, but the end surface may be square. The proximity surface 4 is used as the display surface contact portion 5.

It may be the edge on the fighting side or the adjacent surface of the part.

The writing tool 8 shown in FIGS. 2(A) and CB) is used for writing by orienting a magnetic piece that is horizontally oriented perpendicularly to the display surface of a magnetic display. hand,
This writing tool 8 is formed by a rubber magnet 9 magnetized in the length direction (in the direction of the arrow in the figure) on a rod-shaped rubber base material with a rectangular end surface. The writing tool 8 has the side 10 of the end face in the length direction or the proximal surface 11 of the portion 1o as the display surface contacting part 12 of the magnetic display 1w, and the writing tool 8 shown in FIG. An example in which the display surface contact portion 12 is used as the display surface contact portion 12 is shown in FIG. 14 is a holder.Although in the above embodiment, the writing tool 8 is rod-shaped with a rectangular end surface, it may be any shape as long as the end surface is rectangular.

The writing tool 1.8 shown in Figure 1 and Figure 2 are both 8 m in diameter.
m, length 120cm holder 7.14, thickness 0.4m
A rubber magnet 2.9 with a width of 1.8 av and an Aza of 10 II m is provided, and a plastic plate 6° 13 having the same shape as the rubber magnet 2.9 is connected to one side of the rubber magnet 2.9. However, this is not something to be considered.

Next, an example of the use of the writing tools 1 and 8 shown in FIG. 1 and FIG. 2 will be explained with reference to FIG. 3 and FIG. M4.

The magnetic display 15 used here (a sheet in which a black substrate 16 is coated with a layer of microcapsules 18 encapsulating flake-like magnetic pieces 17 dispersed in a liquid, and a transparent protective film 19 is provided on top of the layered microcapsules 18) It is made up of.

FIG. 3 shows an example of the use of the writing tool 1 shown in FIG. be. First, the display surface 20 of the magnetic display 15 is covered with a sheet-shaped rubber magnet (not shown) magnetized in a multi-pole striped pattern with a yoke, and the magnetized surface of this rubber magnet is applied to the display surface 2o. When it is slid in the direction of the magnetic pole stripes, the magnetic pieces 17 are oriented in the vertical direction, the incident light is absorbed by the black substrate 16, and the display surface 20 takes on a black color.

On this day a, the display surface contact part 5 of the writing tool 1 is placed on the black display surface 20.
When the magnetic piece 17 is slid with a support, the magnetic piece 17 in the vertically oriented sliding trajectory portion is oriented horizontally and exhibits a bright color;
8a Clear colored lines and images are written and displayed on the black display surface 20.

The M4 diagram shows the display surface 20 of the magnetic display 15.
This is an example of the use of the Tli insert tool 8 shown in FIG. 2, which is used when writing is performed with the horizontally oriented magnetic piece 17 oriented vertically. First, the display surface 20 is once oriented vertically with the magnetic pieces 17 by the above-described means, and then 11! !
A magnetized sheet-like rubber magnet (not shown) is applied to the display surface 20, and the magnetic pieces 17 are oriented vertically, and the display surface 20 is made dark black by sliding in a direction perpendicular to the sliding direction of the rubber magnet. Then, the vertically oriented magnetic piece 17 is oriented horizontally, the incident light is reflected by the magnetic piece 17, and the display surface 20 exhibits a bright color. When the display surface contacting part 12 of the writing tool 8 is placed against the bright color display surface 2o and slid, the magnetic piece 17 in the horizontally oriented 1g movement locus is vertically oriented and becomes dark black. Then, dark black lines and images are written and displayed on the bright color display surface 20.

! Figure 5 shows a ghost image that emphasizes the lines and images written and displayed more clearly when writing is performed by vertically orienting the magnetic piece 17 that is oriented horizontally. This shows a magnetic display 15 with a prevention mechanism, and this magnetic display 15 has a magnetic plate 21v on the back side of the display surface 20! The configuration I set up is working fine. However,
It is oriented horizontally! On the display surface 20 in order to perform writing that vertically orients the fi strip 17! When the display surface contact portion 12 of the writing tool 8 shown in FIG. 2 is applied, the display surface contact portion 1
A magnetic field different from the magnetic field of 2 is generated in the magnetic plate 21, and as a result, the display surface contact portion 12 and the magnet 18 are focused, and the magnetic piece 17 is pulled up by g! Because it flows directly and prevents the diffusion of magnetic lines of force,
Magnetic piece 1 in one fastening locus part of the display surface contacting part 12
7 perfect vertical alignment is obtained, resulting in a clearer line, image writing display without ghosting.

[9 Achievements of the Invention] As described above, according to the present invention, since the magnetic display writing tool is formed of a permanent magnet with a rectangular end face,
The lines of magnetic force are focused on the sides of this end face, and by using one of the sides on which the magnetic field is focused or a surface near the side as the display surface contact part of the magnetic display, a point with strong magnetic force comes into contact with the display surface. Therefore, it is ensured that the magnetic piece is oriented vertically to horizontally or horizontally to vertically, and that the contact with the display surface is in the direction of the edge of the end face of the permanent magnet forming the writing tool. Since it is a line contact, the magnetic force at this contact part is constant, and therefore, a clear line with almost no ghosts can be drawn with a width corresponding to the length of the connected side.

In the above-mentioned writing tool, the vertically oriented magnetic piece is oriented horizontally to write and display information on a base material having a rectangular end face in the thickness direction. ff, the magnetization direction at the end face is such that a magnetic field flows parallel to the end face from the N pole of the edge in the thickness direction to the S edge of the other edge, and the magnetic field flows in parallel to the end face from the N pole of the edge in the thickness direction to the S II side of the front two end faces. By using the proximate surface of the part as the display surface contact part of the magnetic display and sliding the chain part on the display surface on which the magnetic pieces are vertically oriented, the magnetic properties of the vertically oriented sliding locus can be improved. The strips are oriented horizontally and can write and display clear lines and images in bright colors on a dark black display surface. In addition, in the above-mentioned writing H, as a writing tool that vertically orients a horizontally oriented magnetic piece to write and display, it is possible to write on a base material whose end face is rectangular in the length direction! Since the magnetic field was magnetized, the magnetic field flows in the length direction, and since one of the edges of the end face in the length direction or other proximal surface was used as the display surface contact part of the magnetic display, the magnetic piece was oriented horizontally at the chain part. By moving the display surface 18, the magnetic pieces in the sliding trajectory are vertically oriented, and 8
Since it is possible to write and display clearly focused lines and images, it is extremely convenient as a magnetic display writing tool, and can improve the practical use of magnetic displays. Furthermore, since a magnetic display is provided with a magnetic plate on the back side of its display surface, in the case of writing in which a horizontally oriented magnetic piece is oriented vertically, the contact part of the writing tool that is in contact with the display surface is A magnetic field different from the magnetic field is generated on the magnetic plate,
As a result, the magnetic field from the contact part is focused and flows vertically through the magnetic piece, preventing the diffusion of magnetic lines of force, resulting in perfect vertical orientation of only the magnetic piece in the sliding trajectory of the front contact part, resulting in a ghost. It is possible to write and display clearer lines and images without the need for .

[Brief explanation of drawings]

Figures 1 (A) and (B) and Figures 2 (A) and (8) are respectively perspective views showing an embodiment of the magnetic display writing H according to the present invention, and Figures 3 and 4 are perspective views showing one embodiment of the magnetic display writing H according to the present invention. Figure 1! An explanatory diagram showing an example of the use of the writing tool shown in Figure 2, and Figure 5 is a writing display.
FIG. 2 is a partially enlarged sectional view showing a magnetic display equipped with a logic tank. , 8... Writing tool 2.9... Rubber magnet, 10...
Side 4.11...Proximity surface of the side, 12...Display surface contact part

Claims (6)

[Claims] (1) In a magnetic display having a display surface in which a substrate is coated with a microcapsule coating layer containing flake-like magnetic pieces dispersed in a liquid, magnetic pieces oriented vertically or horizontally are locally placed horizontally or vertically. A magnetic display writing tool that is formed of a permanent magnet with square end faces and is used as a writing tool that displays characters or other images on a display surface by changing its orientation. (2) As a writing tool that allows vertically oriented magnetic pieces to be oriented horizontally for writing and display, the end face is magnetized in the thickness direction of a rectangular base material, and the end face is magnetized on the N pole side or S pole in the thickness direction. 2. The magnetic display writing device according to claim 1, wherein a side edge or a surface adjacent to the side serves as a display surface contact portion of the magnetic display. (3) As a writing tool that vertically orients a horizontally oriented magnetic piece to write and display, a base material with a rectangular end surface is magnetized in the length direction, and the sides of the end surface in the length direction or The magnetic display writing tool according to claim 1, wherein the proximate surface of the side is a display surface contact portion of the magnetic display. (4) The magnetic display writing tool according to any one of claims (1), (2), and (3), wherein the end face is rectangular. (5) Claims (1)(2)(
3) The magnetic display writing tool described above. (6) A magnetic display equipped with a ghost prevention mechanism consisting of a magnetic plate provided on the back side of the display surface of the magnetic display.