CN112805619A - Canceller and display device using the same - Google Patents
Canceller and display device using the same Download PDFInfo
- Publication number
- CN112805619A CN112805619A CN201980064839.2A CN201980064839A CN112805619A CN 112805619 A CN112805619 A CN 112805619A CN 201980064839 A CN201980064839 A CN 201980064839A CN 112805619 A CN112805619 A CN 112805619A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnet
- writing surface
- magnetic body
- canceller
- 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.)
- Pending
Links
- 239000003094 microcapsule Substances 0.000 claims abstract description 33
- 239000000126 substance Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/1673—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by magnetophoresis
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention provides a remover which can miniaturize the remover and can completely remove characters displayed on the surface of a microcapsule magnetic display panel. An eraser for erasing characters and the like written on a writing surface includes a magnet disposed in an orientation in which a magnetic force line is generated perpendicularly to the writing surface, and a magnetic body disposed between the magnet and the writing surface. This can reduce the gap and miniaturize the canceller. Further, the characters displayed on the surface of the microcapsule magnetophoretic display sheet can be completely erased.
Description
Technical Field
The present invention relates to an eraser (eraser) capable of erasing characters displayed on a writing surface of a microcapsule magnetophoretic display sheet from the surface.
Background
Conventionally, an eraser capable of erasing characters displayed on a writing surface of a microcapsule magnetophoretic display sheet from the surface has been known. For example, patent document 1 discloses a suppressor in which a nonmagnetic material is disposed on a magnet and the magnet is fixed so that magnetic lines of force do not change in order to provide a gap between a microcapsule electrophoretic display panel and the magnet. The magnetic force lines of the eliminator magnet can be horizontally acted on the microcapsules in the microcapsule magnetic migration display panel. This allows the black magnetic particles in the microcapsules to be electrophoresed and dispersed, and allows the white pigment nonmagnetic particles to be aggregated on the surface in a large amount, thereby erasing characters displayed on the surface.
Prior art documents
Patent document
Patent document 1: japanese laid-open patent publication No. 2008-122989
Disclosure of Invention
Problems to be solved by the invention
However, the eliminator of patent document 1 needs to have a large gap in order to cause only horizontal magnetic lines of force to act on microcapsules, which is a factor that hinders miniaturization. Further, as the gap between the microcapsule and the magnet is increased, the magnetic force lines acting on the microcapsule are weakened, and the characters displayed on the writing surface may not be completely erased.
The invention provides an eraser which can be miniaturized and completely erase characters displayed on a writing surface of a microcapsule magnetophoretic display board.
Means for solving the problems
In order to achieve the above object, an eraser according to the invention described in claim 1 is an eraser for erasing characters and the like written on a writing surface, the eraser comprising: a magnet disposed in an orientation in which a magnetic line is generated perpendicularly to the writing surface; and a magnetic body disposed between the magnet and the writing surface.
In the canceller according to the invention recited in claim 2, a surface of the magnetic body facing the writing surface is larger than a surface of the magnet facing the writing surface.
In the canceller according to the invention recited in claim 3, a plurality of layers of the magnetic material are formed between the magnet and the writing surface.
In the canceller according to the invention recited in claim 4, the plurality of magnetic bodies are disposed at equal intervals on a surface facing the writing surface.
Effects of the invention
According to the present invention, in an eraser for erasing characters or the like written on a writing surface, a magnet is disposed in an orientation in which a magnetic line is generated perpendicularly to the writing surface. The magnetic body is disposed between the magnet and the writing surface. As a result, the gap can be reduced, and the canceller can be miniaturized. Further, the characters displayed on the writing surface of the microcapsule magnetophoretic display sheet can be completely erased.
Drawings
Fig. 1 is an overall shape diagram of a canceller in a first embodiment of the present invention.
Fig. 2 is a sectional view a-a of fig. 1 of the eliminator of this first embodiment.
Fig. 3 is a B-B sectional view of fig. 1 of the eliminator of this first embodiment.
Fig. 4 is a sectional view a-a of fig. 1 of the eliminator of this second embodiment.
Fig. 5 is a B-B sectional view of fig. 1 of the eliminator of this second embodiment.
Fig. 6 is a sectional view a-a of fig. 1 of an eliminator according to a third embodiment of the present invention.
Fig. 7 is an overall shape diagram of a canceller in a fourth embodiment of the present invention.
Fig. 8 is a C-C sectional view of fig. 6 of the eliminator of this fourth embodiment.
Detailed Description
[ first embodiment ]
The canceller of the first embodiment of the present invention will be explained. For explanation of the canceller, the far side direction of the arrow Z shown in fig. 1 is expressed as "front" and the near side direction is expressed as "rear", the upper direction of the arrow Y is expressed as "upper" and the lower direction is expressed as "lower", the left direction of the arrow X is expressed as "left" and the right direction is expressed as "right".
The eliminator shown in FIG. 1 constitutes one part of a display device constituted by a microcapsule magnetophoretic display panel and a pen. The user can write characters or the like on the writing surface of the microcapsule magnetophoretic display sheet with a pen, specifically, a pen having a magnet at the pen tip.
As shown in fig. 1, the eraser is formed to have a case 1, and the bottom surface located at the lower side of the case 1 becomes the writing surface side of the microcapsule magnetophoretic display panel. The user slides the casing 1 on the surface while holding it with a hand to erase characters and the like written on the writing surface.
Fig. 2 is a sectional view a-a of fig. 1, and fig. 3 is a sectional view B-B of fig. 1. The canceller will be described in detail with reference to fig. 2 and 3.
The canceller includes a housing 1, a base plate 2, a magnet 3, and a magnetic body 4.
The case 1 is made of a non-magnetic material such as plastic, and also serves as a frame. The upper portion of the housing 1 is a portion to be held by a user's hand, and is desirably formed into a shape that is easily held by the user. A recess having an opening is formed in a bottom surface located on the lower side of the housing 1. The magnet 3 and the magnetic body 4 are disposed in the recess. In addition, a resin is filled in the gap between the magnet 3 and the magnetic body 4 and the recess to fix the magnet 3 and the magnetic body 4.
The base plate 2 is made of a nonmagnetic material such as plastic. The bottom plate 2 is provided to close the recess of the housing 1, and has the same size as the opening of the recess. The base plate 2 is coated with a material having a low coefficient of friction so as to slide on the writing surface of the microcapsule magnetophoretic display panel. Specifically, a fluorine coating or the like is preferable.
The magnet 3 is disposed at the center of the recess of the case 1. Among the magnetic poles of the magnet 3, the N-pole surface is disposed at a position facing the writing surface of the microcapsule magnetophoretic display sheet and at a horizontal position. Thereby, magnetic lines of force of the magnet 3 are generated in a direction perpendicular to the writing surface of the microcapsule magnetophoretic display sheet.
Although not shown, the magnetic body 4 may be plural. In this case, the magnetic substance 4 having the same size, that is, the first layer magnetic substance 4, the second layer magnetic substance 4, and the third layer magnetic substance 4 may be disposed between the magnet 3 and the writing surface of the microcapsule magnetophoretic display panel. In this case, the positions of the through holes of the magnetic substance 4 of the second layer and the magnetic substance 4 of the third layer are shifted from the positions of the through holes of the magnetic substance 4 of the first layer. Thus, the magnetic lines of force from the magnet 3 do not directly act on the surface of the microcapsule electrophoretic display sheet, but act by eddy currents of small magnetic lines of force, whereby the intensity of the magnetic lines of force can be made uniform and cleanly erased.
< effects of the present embodiment >
According to the present embodiment, the magnetic substance 4 is disposed between the magnet 3 and the writing surface of the microcapsule magnetophoretic display sheet. This makes it possible to disperse the magnetic lines of force generated by the magnet 3 by the magnetic body 4 to form a plurality of small eddy currents of magnetic lines of force, and to uniformize the strength of the magnetic lines of force and to erase the lines of force cleanly. Further, the magnetic force lines in the horizontal direction can be easily applied to the writing surface of the microcapsule magnetophoretic display panel.
According to the present embodiment, the size of the surface of the magnetic body 4 is larger than the size of the surface of the magnet 3. This enables the magnetic lines of force of the magnet 3 to form a plurality of small eddy currents of magnetic lines of force by the magnetic body 4.
[ second embodiment ]
A canceller according to a second embodiment of the present invention will be explained. The second embodiment is different from the first embodiment in the shape of the magnetic body 4. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
As shown in fig. 4 and 5, magnetic body 5 is made of a material such as iron, ferrite, or silicon steel plate. The magnetic body 5 has a plate shape elongated in the front-rear direction. The plurality of magnetic bodies 5 are disposed at equal intervals in the recess of the case 1 so as to form a surface facing the writing surface of the microcapsule magnetophoretic display sheet. The surface of the magnetic substance 5 facing the writing surface of the microcapsule magnetophoretic display sheet has a larger size than the same surface of the magnet 3.
< effects of the present embodiment >
According to the present embodiment, the magnetic field lines generated by the magnet 3 can be dispersed by the magnetic body 5 to form a plurality of small eddy currents of magnetic field lines, and horizontal magnetic field lines can be easily applied to the writing surface of the microcapsule magnetophoretic display sheet.
[ third embodiment ]
A canceller according to a third embodiment of the present invention will be explained. The third embodiment is the same as the first embodiment in terms of the shape of the magnetic body 6. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
As shown in fig. 6, magnetic body 6 is made of a material such as iron, ferrite, or silicon steel plate. The magnetic body 6 has a plate shape elongated in the front-rear direction. The plurality of magnetic bodies 6 are arranged at equal intervals in the recess of the case 1 so as to form a surface of the first layer facing the writing surface of the microcapsule magnetophoretic display sheet. Further, a plurality of magnetic bodies 6 are arranged at equal intervals so as to form a second layer surface parallel to the first layer surface. The first layer and the second layer of magnetic bodies 6 are arranged such that the second layer of magnetic bodies 6 is disposed at equal intervals between the first layer of magnetic bodies 6. The magnetic substance 6 has a larger size on the surface facing the writing surface of the microcapsule magnetophoretic display sheet than the same surface of the magnet 3.
< effects of the present embodiment >
According to the present embodiment, the magnetic field lines generated by the magnet 3 can be dispersed by the magnetic body 6 to form a plurality of small eddy currents of magnetic field lines, and horizontal magnetic field lines can be easily applied to the writing surface of the microcapsule magnetophoretic display sheet.
[ fourth embodiment ]
A canceller according to a fourth embodiment of the present invention will be explained. The fourth embodiment is different from the first embodiment in the shape of the magnetic body 7. In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
As shown in fig. 7 and 8, magnetic body 7 is made of a material such as iron, ferrite, or silicon steel plate. Magnetic body 7 has a hemispherical shape protruding in the vertical direction. Magnetic body 7 is provided with a plurality of through holes in the vertical direction. The hemispherical surface area of magnetic body 7 is larger than the same surface size of magnet 3.
< effects of the present embodiment >
According to the present embodiment, the magnetic field lines generated by the magnet 3 can be dispersed by the magnetic body 7 to form a plurality of small eddy currents of magnetic field lines, and horizontal magnetic field lines can be easily applied to the writing surface of the microcapsule magnetophoretic display sheet.
While the embodiments of the present invention have been described above, those skilled in the art can make various modifications without departing from the scope of the present invention.
(modification 1)
In the present embodiment, the magnet 3 is disposed in the center of the recess of the housing 1. Instead of this embodiment, a plurality of magnets 3 may be arranged at positions surrounding the center of the recess of the housing 1.
(modification 2)
In the present embodiment, the bottom plate 2 is provided to close the recess of the case 1, and has the same size as the opening of the recess. Instead of this embodiment, the bottom plate 2 may be provided.
Industrial applicability
The present invention relates to a eraser capable of erasing characters displayed on a writing surface of a microcapsule magnetophoretic display sheet from the surface.
Description of the symbols:
1: a housing; 2: a base plate; 3: a magnet; 4: a magnetic body; 5: a magnetic body; 6: a magnetic body; 7: a magnetic body.
Claims (6)
1. A canceller includes:
a magnet disposed in an orientation that generates magnetic lines of force in a direction perpendicular to the writing surface; and
a magnetic body disposed between the magnet and the writing surface,
wherein the content of the first and second substances,
the magnetic body has at least one gap provided in a direction perpendicular to the writing surface.
2. The canceller of claim 1,
the area of the surface of the magnetic body facing the writing surface is larger than the area of the surface of the magnet facing the writing surface.
3. The canceller of claim 1,
the magnetic body is disposed by forming a plurality of layers of the magnetic body between the magnet and the writing surface.
4. The canceller of claim 1,
the gap is formed by disposing the plurality of magnetic bodies at equal intervals on a virtual surface parallel to the writing surface.
5. The canceller of claim 1,
the gap is formed by at least one through hole provided in the magnetic body in a direction perpendicular to the writing surface.
6. A display device comprising a eraser, a pen for writing characters and the like, and a microcapsule magnetophoretic display panel,
the canceller is as claimed in any one of claims 1 to 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018211012A JP2020076900A (en) | 2018-11-09 | 2018-11-09 | Eraser and display device using the same |
| JP2018-211012 | 2018-11-09 | ||
| PCT/JP2019/026129 WO2020095476A1 (en) | 2018-11-09 | 2019-07-01 | Eraser and display device utilizing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112805619A true CN112805619A (en) | 2021-05-14 |
Family
ID=70611862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980064839.2A Pending CN112805619A (en) | 2018-11-09 | 2019-07-01 | Canceller and display device using the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2020076900A (en) |
| CN (1) | CN112805619A (en) |
| TW (1) | TW202042195A (en) |
| WO (1) | WO2020095476A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001188485A (en) * | 1999-12-29 | 2001-07-10 | Pilot Corp | Display changing member for magnetic material inversion display panel |
| JP2003335094A (en) * | 2002-05-20 | 2003-11-25 | Pilot Corporation | Magnetic utensil for magnetic body reversal display panel |
| JP2004050593A (en) * | 2002-07-19 | 2004-02-19 | Pilot Corporation | Magnetic eraser for magnetic material inversion display panel |
| CN107231812A (en) * | 2015-02-17 | 2017-10-03 | 伊英克公司 | Electromagnetic writing device for electro-optic displays |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2231101A (en) * | 1999-12-29 | 2001-07-16 | Kabushiki Kaisha Pilot | Magnetic-material reverse display panel |
| JP2008122989A (en) * | 2008-01-23 | 2008-05-29 | Chemitec Kk | Magnet for erasure used in overerasable microcapsule magnetophoretic display sheet |
| JP5971527B2 (en) * | 2013-05-25 | 2016-08-17 | コニカミノルタ株式会社 | Magnetophoretic display |
| WO2020090808A1 (en) * | 2018-11-01 | 2020-05-07 | Ｚｅｒｏ Ｌａｂ株式会社 | Magnetic eraser, writing system and display device |
-
2018
- 2018-11-09 JP JP2018211012A patent/JP2020076900A/en active Pending
-
2019
- 2019-07-01 CN CN201980064839.2A patent/CN112805619A/en active Pending
- 2019-07-01 WO PCT/JP2019/026129 patent/WO2020095476A1/en active Application Filing
- 2019-07-08 TW TW108123880A patent/TW202042195A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001188485A (en) * | 1999-12-29 | 2001-07-10 | Pilot Corp | Display changing member for magnetic material inversion display panel |
| JP2003335094A (en) * | 2002-05-20 | 2003-11-25 | Pilot Corporation | Magnetic utensil for magnetic body reversal display panel |
| JP2004050593A (en) * | 2002-07-19 | 2004-02-19 | Pilot Corporation | Magnetic eraser for magnetic material inversion display panel |
| CN107231812A (en) * | 2015-02-17 | 2017-10-03 | 伊英克公司 | Electromagnetic writing device for electro-optic displays |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020095476A1 (en) | 2020-05-14 |
| JP2020076900A (en) | 2020-05-21 |
| TW202042195A (en) | 2020-11-16 |
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