JP2006289706A - Magnetic panel having ruled line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a magnetic panel having a constitution wherein a ruled line provided thereon is prevented from being scratched and peeled off by a magnetic pen or the like and made hard to see and wherein the ruled line has a function as a dark line and moreover the kind of the ruled line or the form of layout thereof can be changed to other one as occasion demands. <P>SOLUTION: A plurality of liquid holding chambers constituted of small chambers adjacent to each other and divided by transparent partition walls are formed at the back of a transparent surface plate, and a dispersion liquid prepared by dispersing a magnetic material for display in a dispersion medium is held in the liquid holding chambers. In the magnetic panel thus constituted, a back plate provided with the ruled line is disposed at the back of the liquid holding chambers and the ruled line provided on the back plate is displayed through the transparent partition walls. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention forms a plurality of liquid storage chambers in which a small chamber adjacent to the back side of a transparent surface plate is partitioned by a transparent partition, and a magnetic material for display is dispersed in a dispersion medium in the liquid storage chamber The present invention relates to a magnetic panel containing a liquid.

  2. Description of the Related Art Conventionally, a magnetic panel using a magnetic display method capable of performing display by magnetism is known. As the magnetic panel, a magnetophoretic display method for performing display by migrating a display magnetic material or a display magnetic material. There has been proposed a magnetic panel of a magnetic reversal display method in which display is performed by reversing.

  Examples of the magnetophoretic display method include those described in JP-B-62-53359. The magnetic panel of this publication is provided with a liquid storage chamber having a multi-cell structure on the back side of a surface plate, and a liquid dispersion in which magnetic particles as a display magnetic material are dispersed in a colored dispersion medium is enclosed in the liquid storage chamber. A method is described in which a magnetic field is applied to the dispersion liquid from the side, and the display magnetic body in the dispersion liquid is attracted to the surface plate side for display. When a magnetic panel using this magnetophoretic display method is recorded with a magnetic pen close to the surface plate side, the display magnetic material attracted by the magnetic field of the magnetic pen migrates to the surface plate side, and the display magnetic material and The handwriting is displayed by the difference in color contrast of the colored dispersion medium. The magnetic substance for display attracted to the surface plate side is attracted to the back side when a magnetic field is applied from the back side by a magnetic eraser, and the displayed handwriting can be erased.

  On the other hand, a magnetic reversal display method is disclosed in, for example, Japanese Patent Publication No. 59-32796. The magnetic panel of this publication is provided with a liquid storage chamber having a multi-cell structure on the back side of a surface plate, and a micro magnet having a different color on the S pole side surface portion and the N pole side surface portion in the liquid storage chamber. A magnetic body reversal display method is described in which display is performed by reversing the display magnetic body in the dispersion liquid by enclosing it as a body and applying a magnetic field to the dispersion liquid from the surface plate side. The magnetic panel using this magnetic material reversal display method was reversed by the magnetic force of the magnetic pen when recording the magnetic pole with the N pole approaching the magnetic panel with the N pole side surface portion facing the surface plate side. The handwriting is displayed by the difference in color contrast between the S pole side surface portion of the display magnetic body and the non-inverted N pole side surface portion. The inverted display magnetic body can erase the displayed handwriting when the display magnetic body is reversed again when the south pole of the magnetic eraser is brought closer from the surface plate side.

  Since these magnetic panels are used like a blackboard or a whiteboard, it is desired that the ruled lines are provided on the panel surface. As a method of providing the ruled line on the magnetic panel, a method of printing the ruled line on the surface side of the surface plate as in the case of the white board or a method of displaying the ruled line by attaching a colored adhesive tape is generally used. Alternatively, as described in Japanese Patent Application Laid-Open No. 2003-191690, one having ruled lines printed on the back side of the front plate has been proposed. As the ruled lines provided on these writing board surfaces, thin lines or broken lines are used, or dark lines in which the lines are made inconspicuous by using a color with a low contrast to the color of the writing board surface as the ruled line color are also preferred.

JP-B 62-53359 Japanese Patent Publication No.59-32796 JP2003-191690

  However, since the surface plate of the magnetic panel is molded from resin, unlike the white boat, the ruled line cannot be printed after printing the ruled line on the surface plate, and the fixing property of the ruled line is low. The printed material has a problem that it becomes difficult to see because the ruled line is peeled off while repeatedly erasing the surface plate with a magnetic pen or the like. In addition, there is also a problem in that a colored adhesive tape is pasted on a surface plate and a ruled line is displayed, and the adhesive tape is peeled off by a magnetic pen or the like and becomes difficult to see. In any of the above methods, since the ruled line is raised from the surface of the surface plate, there is a problem that the magnetic pen is caught at the time of writing and the writing feeling is deteriorated, and dust and dirt are easily attached. In the magnetic reversal display panel described above, since all erasing operations are performed on the surface plate provided with ruled lines, magnetic tools such as a magnetic pen and a magnetic eraser frequently come into contact with the surface plate and the ruled lines are particularly peeled off. Easy structure. In Japanese Patent Application Laid-Open No. 2003-191690, the ruled line exists on the back side of the surface plate. Therefore, when it is desired to change to another ruled line pattern, the surface plate itself of the magnetic panel must be replaced. However, it is difficult to change the ruled lines.

  In view of these facts, the present invention has a function as a dark line, and the ruled line pattern provided on the magnetic panel is not rubbed off by a magnetic pen etc. An object of the present invention is to propose a magnetic panel having ruled lines having a structure that can be changed into a form.

The above-described problems of the present invention are solved by the following means. That is, the present invention
“1. A dispersion liquid in which a small chamber adjacent to the back side of a transparent surface plate is partitioned by a transparent partition, and a display magnetic material is dispersed in a dispersion medium in the liquid storage chamber A magnetic panel having a ruled line, wherein a back plate provided with a ruled line is provided on the back of the liquid storage chamber, and the ruled line provided on the back plate is displayed through the transparent partition. .
2. The magnetic panel is a magnetic reversal display panel in which the magnetic body for display is a magnet having different colors on the S pole side surface portion and the N pole side surface portion, and the ruled lines are formed on a back plate which is an iron plate. A magnetic panel comprising the ruled line as described in 1 above.
3. A magnetic body having a ruled line according to 1 or 2, wherein a frame is provided around the outer periphery of the magnetic panel, and the back plate can be inserted and removed through an opening provided on at least one side of the frame. panel. Is.

  In the magnetic panel having the ruled line of the present invention, the ruled line is provided on the back plate on the back of the magnetic panel, so that it is not rubbed off by a magnetic pen or the like, and the liquid storage chamber is concealed by the dispersed liquid. And can be seen through a transparent partition, resulting in a thin dark line. Further, by making it possible to remove the back plate from the magnetic panel main body and to exchange a plurality of back plates having different ruled line patterns, a single magnetic panel can be used in various ways. In particular, by enclosing the periphery of the magnetic panel with a frame and allowing the back plate to be inserted and removed from an opening provided in the frame, the back plate can be easily replaced, and the use of the magnetic panel is expanded.

  The partition wall in the present invention is a multi-cell structure such as a hexagon, a quadrangle, or a circle on the back side of a transparent surface plate, or a spherical structure, partitions adjacent small chambers, and the dispersed liquid in each liquid storage chamber is mixed with each other. It doesn't fit. The partition walls can be formed using a transparent resin, and the transparency may be any as long as the ruled line of the back plate disposed on the back side from the front side of the magnetic panel can be visually recognized. A material such as resin or metal can be used for the back plate. Particularly in the case of a magnetic reversal display panel, a magnetic plate such as a magnetic pen or a magnetic eraser can be efficiently influenced on the magnetic panel by forming the back plate with an iron plate. As a method of providing ruled lines on the back plate, there are a method of printing with a printer using ink jet, toner or thermal transfer ribbon, a method of performing silk printing with a paint, and the like. Alternatively, a ruled line may be formed by attaching a colored adhesive tape.

  In order to facilitate understanding of the present invention, description will be made with reference to the drawings. In this embodiment, a magnetic panel using the above-described magnetic material inversion display method will be described as a magnetic panel. FIG. 1 is a cross-sectional view of the internal structure of the magnetic panel of the present embodiment. The internal structure of the magnetic panel will be briefly described with reference to FIG. 1. The magnetic panel 1 has a honeycomb structure (surface side) between a transparent surface plate 2 on the display surface side and a back surface plate 3 on the opposite side. A hexagonal transparent partition wall 4 is disposed, and a small chamber partitioned by the partition wall 4 is defined as a liquid storage chamber 5. The liquid storage chamber 5 stores a dispersion liquid 8 having a yield value obtained by dispersing the display magnetic body 7 in a dispersion medium 6 composed of a dispersion medium and a thickener. The display magnetic body 7 is a micro magnet having the south pole side surface portion colored green and the north pole side surface portion colored white. A back plate 9, which is an iron plate, is disposed on the back surface of the back plate 3. A ruled line 10 is printed on the front side of the back plate 9.

  In order to write display information on the magnetic panel 1, for example, an N-pole magnetic pole part 100 a provided in front of the pen-shaped magnetic pen 100 in a state where the transparent surface plate 2 is white (N-pole side surface part). When the transparent surface plate 2 is moved in the direction of the arrow T while being in contact with the transparent surface plate 2, the green color of the display magnetic body 7 (S pole side surface portion) is linearly transparent by the magnetic force (arrow W in the figure). It is arranged on the 2 side. In this case, the handwriting of green (S pole side surface portion) is displayed on the transparent surface plate 2 side of white (N pole side surface portion). On the other hand, when the transparent surface plate 2 on which green (S pole side surface portion) is displayed on the white background is returned to white, the magnetic eraser 110 is used. The magnetic eraser 110 is a flat magnet, and when the S pole 110a side is brought into contact with the green display (surface part of the S pole side) of the transparent surface plate 2 of the magnetic panel 1, the magnetic force (arrow X in the figure). As a result, the white color (N-pole side surface portion) of the display magnetic body 7 is arranged on the transparent surface plate 2 side to become white.

  FIG. 2 is a part of the surface plate in a state where writing is performed on the magnetic panel of the present embodiment. The ruled line 10 provided on the back plate can be seen from the front side through the transparent partition wall 4 of the magnetic panel 1. The ruled line 10 is displayed as a thin dark line because the portion of the liquid storage chamber 5 is hidden by the display magnetic body 7 in the dispersion liquid 8 and cannot be seen. The handwriting “A” and “B” written with the magnetic pen could be written on the basis of the ruled line 10.

  FIG. 3 is a view showing a state in which a frame is provided around the magnetic panel. 4 is a cross-sectional view of FIG. As shown in the figure, a frame 11 is provided around the outer periphery of the magnetic panel 1. The frame 11 has a U-shaped cross section having an orthogonal surface 11A orthogonal to the surface of the magnetic panel 1 and parallel parallel surfaces 11B and 11C. The magnetic panel 1 is fixed inside the parallel surface 11B, and the particle board 12 is fixed inside the parallel surface 11C. Moreover, the opening part 11D is provided in the upper part of the frame 11, and the backplate 9 can be inserted / removed from the opening part 11D. Therefore, in this embodiment, a plurality of back plates having different ruled line patterns can be easily replaced with respect to the back surface of the magnetic panel. In FIG. 3, rear plates 9A, 9B and 9C provided with three types of ruled line patterns 10A, 10B and 10C are set. Further, in the present embodiment, knob portions 9a, 9b, 9c are provided above the respective back plates 9A, 9B, 9C so that the insertion into and removal from the opening portion 11D can be further facilitated.

  The present invention can be used for a magnetic panel of a magnetophoretic display method or a magnetic material inversion display method. In addition, a dispersion liquid in which micro magnets having different colors on the S pole side surface portion and the N pole side surface portion, which are display magnetic bodies, are dispersed in a colored dispersion medium is sealed in the liquid storage chamber, and the magnet S from the surface plate side is sealed. The display magnetic body is attracted to the surface side by causing a magnetic field to act on the dispersion liquid by bringing the pole or N pole close to each other, and the display magnetic body is reversed by the opposite magnetic pole to separate the handwriting. It is used for a magnetic panel using a magnetophoretic reversal display method in which the display magnetic body is drawn to the back side by erasing the handwriting by applying a magnetic field from the back side of the panel. It is also possible.

It is internal structure sectional drawing of the magnetic panel of this Embodiment. It is a part of surface board in the state which wrote in the magnetic panel. It is a figure of the state which provided the frame around the magnetic panel. FIG. 4 is a cross-sectional view of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Magnetic panel, 2 ... Transparent surface board, 3 ... Back surface board, 4 ... Transparent partition,
5 ... Liquid storage chamber, 6 ... Dispersion liquid, 7 ... Magnetic body for display, 8 ... Dispersion liquid,
9 ... back plate, 10 ... ruled line, 11 ... frame, 11D ... opening.

Claims (3)

A plurality of liquid storage chambers are formed in which a small chamber adjacent to the back side of the transparent surface plate is partitioned by a transparent partition, and a dispersion liquid obtained by dispersing a display magnetic material in a dispersion medium is stored in the liquid storage chamber. A magnetic panel comprising a ruled line, wherein a back plate provided with a ruled line is disposed on the back of the liquid storage chamber, and the ruled line provided on the back plate is displayed through the transparent partition. The magnetic panel is a magnetic reversal display panel in which the magnetic body for display is a magnet having different colors on the S pole side surface portion and the N pole side surface portion, and the ruled lines are formed on a back plate which is an iron plate. The magnetic panel provided with the ruled line according to claim 1. 3. A ruled line according to claim 1, wherein a frame is provided around the outer periphery of the magnetic panel, and the back plate can be inserted and removed through an opening provided on at least one side of the frame. Magnetic panel.

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