JP3464064B2 - Writing system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing system for erasing a writing mark written on a plate-like body by applying water to the writing surface and overprinting.

[0002]

2. Description of the Related Art In recent years, in classes, meetings, meetings, briefing sessions, etc., whiteboards written with a water-based felt-tip pen have been widely used instead of so-called blackboards using chalk. This product has a non-penetrating smooth writing surface that has been subjected to enamel treatment or high-temperature baking treatment of paint on the surface of a substrate such as steel, and as a writing instrument, the powder pigment is suspended in alcohol. A felt tip pen is used. Therefore, the writing mark is only the powder pigment having no binder attached, and can be easily erased by wiping with an eraser such as a dry cloth.

[0003]

However, in such a conventional writing instrument, since the wiped pigment adheres to the eraser, frequent cleaning of the eraser is required, and sometimes the pigment scatters and stains the surroundings. There is a problem of doing.

Therefore, the inventor of the present invention has filed Japanese Patent Application No. 6-2180.
89, 2- (4-dodecyloxy-3-methoxystyryl) quinoline, 3-cyclohexylamino-
6-chloro-fluorane, 3-diethylaminobenzo [a] -fluorane, 3- (4-dimethylamino-2-
Ethoxyphenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-azaphthalide, 3,3-
Bis [4-diethylamino-2-ethoxyphenyl]-
4-azaphthalide, 3-cyclohexylmethylamino-
Mixing one or more electron-donating color-forming compounds selected from the group consisting of 6-methyl-7-anilinofluorane and an electron-accepting color developing compound selected from the group consisting of zinc salicylate and bisphenol A. It was proposed to solve the above-mentioned problems by devising a new anhydrous ink described above and using it.

That is, the ink is colored by the molecular contact between the color-forming compound and the color-developing compound,
It has the property that the effect of the color-developing compound is lost due to the adhesion of water and the color returns from colorless to colorless, and the erasing of the handwriting is not done by wiping the pigment itself, but by erasing the ink itself by a chemical reaction with water. .

Therefore, in order to erase the writing marks of this ink,
A new erasing means different from the conventional eraser such as a dry cloth is required.

That is, the present invention has been devised in view of the above situation, and an object thereof is to apply the water in the liquid storage tank to the writing surface of the plate-like body and to print the writing surface. Writing system that can solve the above problems based on
The purpose is to provide a system.

[0008]

In order to achieve the above-mentioned object, the present invention provides a color to colorless reaction by a chemical reaction with water.
Writing instrument for white board having decolorizable ink on the
For writing with a sheet-like plate that is written by a writing instrument
A writing system comprising a plate-shaped device for writing
The plate-shaped device includes a liquid storage tank that stores water in a frame body that rotatably supports a sheet-shaped plate-shaped body having a writing surface to be written by the writing instrument, and the water in the liquid storage tank to the plate. A brush for coating the plate-like body, a brush-like tool for overwriting the writing surface of the plate-like body, and a switch for operating the pump along with the circulation of the plate-like body , and
Surface is frosted Rutotomoni, the writing instrument is 2- (4
-Dodecyloxy-3-methoxystyryl) quinoline,
3-cyclohexylamino-6-chloro-fluorane,
3-diethylaminobenzo [a] -fluorane, 3-
(4-Dimethylamino-2-ethoxyphenyl) -3-
(1-Ethyl-2-methylindol-3-yl) -4
-Azaphthalide, from one or more electron-donating color compounds selected from the group consisting of 3,3-bis [4-diethylamino-2-ethoxyphenyl] -4-azaphthalide, and a group consisting of zinc salicylate and bisphenol A Mix with the electron-accepting color developing compound of your choice
It is characterized in that chromatic ink Anhydrous.

Further, in the invention of claim 2, the brush-like tool
Is applied to the plate-shaped body on the downstream side of the circulation of the plate-shaped body.
A rubber blade-shaped draining piece for draining water
It is characterized by that.

Further, in the invention of claim 3, the liquid storage tank
Collects the water applied to the plate and collects it in the liquid storage tank.
It is characterized by being connected to the return conduit.

[0011]

In the writing plate device of the present application, a liquid such as water is applied to the plate member by using a pump. Therefore, it is possible to erase the writing mark on the plate-like body by the ink proposed in the above-mentioned Japanese Patent Application No. 6-218089, and prevent stains on the surroundings. In addition, since it is possible to give an appropriate amount of water to the plate-shaped body as compared with direct immersion in water, it becomes possible to quickly dry the water after application,
New writing can be done early after erasing.

Since the liquid storage tank is provided, the erasing ability can be maintained for a long time. Further, since the ink is erased by adhering water, the ink can be uniformly erased, and the water is not discolored or contaminated by the erase of the ink, which facilitates maintenance.

Further, since the writing plate-like device has a brush-like tool for overwriting the writing surface, even when the writing surface is matt-treated, fine uneven portions on the matt-treated surface are obtained. Reliable and easy removal of ink entering
It

Since the matte processing on the writing surface suppresses the reflection of illumination light and the like, the writing traces can be made easier to read, eyestrain is reduced, and in a large room such as a large lecture room. To be used.

When the brush-like body can be separated from the writing surface, a part of the writing trace can be selectively non-erased, which further facilitates the usability.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in the drawing, the writing plate-shaped device 1 includes a frame body 2 for a frame, a plate-shaped body 3 having a writing surface 3S, a liquid storage tank 5 containing a liquid, and a liquid in the liquid storage tank 5. A pump 6 for coating the plate-like body 3, a brush-like tool 7 for overwriting the writing surface 3S of the plate-like body 3, and a switch SW for operating the pump 6 are provided.

As shown in FIG. 1, in this embodiment, the frame body 2 includes an upper horizontal frame piece 10 and a horizontal horizontal frame piece 10 which are horizontal between upper end portions and intermediate portions of a pair of vertical frame pieces 9, 9, respectively. The vertical frame pieces 9 are connected to each other in the shape of a gate, and at the lower end of the vertical frame piece 9, there are arranged leg pieces 13 extending forward and backward and having wheels such as casters on the lower surface.

The plate-like body 3 is composed of a tubular sheet-like body 40 having both ends connected endlessly. For example, a non-stretchable and waterproof sheet in which the front and back surfaces of a woven cloth are covered with a synthetic resin such as vinyl. It is preferable to use a base material whose surface is coated with a fluorine resin, for example. In the present embodiment, the writing surface 3S of the plate-like body 3 that has been subjected to this coating treatment is subjected to a matte treatment to reduce the glossiness thereof, thereby suppressing the reflection of light.

The plate-like body 3 is supported by the support shafts 14 provided on the frame body 2 and extending vertically so as to be able to rotate in the lateral direction, and each support shaft 14 is operated by a driving tool 15.

The driving tool 15 includes a pair of gear boxes 16, 16 provided on the upper surfaces of both ends of the horizontal frame piece 10 and a drive shaft 17 bridged between the gear boxes 16, 16.
And an electric motor M1 which is connected to one gear box 16 and drives the drive shaft 17, and the electric motor M1 is operated by, for example, a switch SW provided on the frame body 2.

The vertical frame pieces 9 are the horizontal frame pieces 10, 11 respectively.
In between, a substantially U-shaped cross-section having open inward facing surfaces is formed, and the support shaft 14 rotatably pivoted at its upper and lower ends by the frame body 2 is arranged inside the U-shaped cross section. There is. The upper ends of the support shafts 14 are respectively connected to the gear box 16
The supporting shafts 14 and 14 are gear-connected to each other and are rotationally driven in the same direction by the electric motor M1 to ensure that the wide and long plate-like body 3 easily circulates. Note that only one of the support shafts 14 may be driven, and the plate-shaped body 3
In the present embodiment, in order to prevent the loosening, the tension is provided by using an appropriate tension means (not shown) including a tension shaft and the like.

Further, the frame body 2 is provided with a back plate 18 having an underlay surface for facilitating writing by supporting the writing surface 3S of the plate-like body 3 from the back side thereof in an underlay shape. The back plate 18 connects the lateral frame pieces 10 and 11 and has a hollow box shape in the present embodiment.
A pressurized air pump 19 such as a compressor attached to the horizontal frame piece 11 is electrically connected to the device. In addition, a large number of minute holes 18A communicating with the hollow interior H are bored in the underlay surface, and when the plate-like body 3 circulates, compressed air is discharged from the holes 18A, so that the plate-like body is formed. 3 and the underlying surface are prevented from being excessively rubbed to improve the wear life of the plate-like body 3. For this purpose, the pressurized air pump 19 is operated simultaneously or non-simultaneously with the electric motor M1 by the switch SW.

The frame 2 has a plate-like body 3 viewed from the writing surface side.
The vertical frame piece 9 on the downstream side in the orbiting direction is formed with an opening 20 whose outer surface is opened, whereby the plate-like body 3 winds around the support shaft 14 and turns back. And a brush-like tool 7 for overwriting the writing surface 3S is provided in the opening 20.

The brush-like tool 7 includes a vertically long box-like frame 21 to be attached to the opening 20, a brush-like body 22 accommodated therein, and a writing liquid such as water, which is water in this embodiment. And a supply pipe 23 for supplying S.

The frame 21 has a U-shaped cross section with an inwardly facing surface facing the opening 20, and has a U-shaped guide.
And is attached to the vertical frame piece 9 so as to be separated from the opening 20. In this example, the guide tool 24 has a plurality of horizontal guide shafts 24A attached to the front surface and the rear surface of the vertical frame piece 9 and extending parallel to the frame body 2, and a guide hole for inserting each guide shaft 24A. And a guide tube 24B attached to the frame 21,
The frame 21 translates along the guide shaft 24A from a position Y1 where the brush-like body 22 and the writing surface 3S are in contact with each other to a position Y2 where they are separated from each other. The frame 21
Alternatively, the brush-like body 22 and the writing surface 3S may be hinged so as to be separated from each other by using a hinge member or the like.

In the present embodiment, the brush-like body 22 is a rotating roller and has a high water absorption property on the outer peripheral surface of the base body 25 which is parallel to the support shaft 14 and whose upper and lower ends are pivotally supported by the frame 21. A brush body 26 made of, for example, a sponge, which has an uneven surface is provided.

The supply pipe 23 has a pipe tubular base portion 23A standing parallel to the brush-like body 22 and a small hole formed toward the brush-like body 22, and the base portion 23A.
A liquid storage tank 5 for storing liquid is connected to the lower end of the via a pump 6. Therefore, the liquid pressure-fed from the liquid storage tank 5 by the operation of the pump 6 by the push button of the switch SW is discharged from the small holes of the supply pipe 23 and is sequentially printed.
Water is absorbed and supplied.

The brush-like body 22 is rotatably driven in a direction opposite to the circling direction by a known driving tool (not shown), and the brush body 26 that has absorbed the liquid rubs against the winding portion 3A. As a result, the liquid is applied to the writing surface 3S over the entire width, and the writing surface 3S is overprinted to effectively remove the ink on the writing surface 3S. Therefore, in the present embodiment, the brush-like body 22 functions as a coating body for applying the liquid to the writing surface 3S and also as a overprinting body for overprinting and removing the ink on the writing surface 3S. . The small holes of the supply pipe 23 may be formed toward the writing surface 3S, and the liquid to be ejected may be directly jetted onto the writing surface 3S in a shower shape. At this time, the supply pipe 23 functions as a coated body. In addition, the brush-like body 22 may be fixed to be rotationally immovable, or may be rotationally driven in the same direction as the circumferential direction.
The rotation speed is different from the revolution speed.

As the overprinting body 26, in addition to sponge material,
Although it may be formed of a cloth material having a high water absorption property such as felt, it is preferable to use a rotary brush in which a brush material or the like is planted on the outer peripheral surface of the base 25. At this time, the brush tip greatly enhances the brushing effect. As well as increasing, it exhibits high water absorption between the brushes.

As shown in FIG. 3, in the brush-like tool 7, the supply pipe 23 is formed as a base 25 of the brush-like body 22, and a cylindrical overprinting body 26 is rotatably or non-rotatably provided around this. Alternatively, the liquid exuding from the substrate 25 is supplied to the overprint body 26 from the inner peripheral surface thereof.

FIG. 4 shows an example in which the brush 22 is a stationary brush. As shown in the figure, a surface 25S that curves along the winding portion 3A is formed on the base body 25 that is the supply pipe 23, and a plurality of small holes are formed in this surface 25S, and the brush material 28 is also implanted. As a result, it is possible to increase the overprinting area between the writing surface 3S and the necessary ink removing effect even when the brush-like body 22 is fixed.

Further, as shown in FIG. 2, the brush-like tool 7 is provided with a rubber blade-like draining piece 29 for pressing the overwritten writing surface 3S to drain the liquid on the writing surface 3S. It is possible to speed up the drying of the writing surface 3S and to perform new writing on the writing surface 3S at an early stage. Although the draining piece 29 is positioned on the downstream side of the brush-like body 22 and fixed to the frame 21, this draining piece 29 also helps prevent the liquid from splashing over a wide area, and therefore FIG. As shown in
It may be provided on both the upstream side and the downstream side of the brush-like body 22. As the draining piece 29, for example, a roller body or a plate body having a high water absorption property using a foam material containing cellulose can be used.

Further, in the present embodiment, in order to further speed up the drying of the writing surface 3S, a drying tool 33 for forced drying is arranged on the frame body 2 on the downstream side of the draining piece 29. Drying tool 33
Is a fan heater in this example, and when the plate-shaped body 3 circulates, blows warm air over substantially the entire width of the drained writing surface 3S. As the drying tool 33, only a blower may be used, or a heater utilizing radiant heat or the like may be used, and the drying tool 33 may be naturally dried without using it.

The storage tank 5 for storing the liquid is, for example, a container body attached to the lower portion of the frame body 2, and in this example, a cartridge-type hermetically-sealed type so that a fixed amount of liquid is always stored. The liquid is replenished by the water absorption tank 32. Further, in this example, a receiving tray 35 for collecting the liquid excessively supplied at the time of coating and the liquid drained by the draining piece 29 is provided below the brush-like tool 7, and the receiving tray 35 and the storage tank are provided. 5 and 5 are connected by a conduit 36. In addition, a filter 37 having a filter for filtering the collected liquid exchangeably arranged is interposed in the conduit 36,
Therefore, in this example, the storage tank 5, the pump 6, the supply pipe 2
3, the brush 7, the saucer 35, the conduit 36, and the like form a liquid circulation circuit to reduce the amount of liquid used and prevent the device from being contaminated by the liquid. Further, it is preferable to replace the liquid in the storage tank 5 within about one week to 10 days in order to keep the writing plate-like device 1 clean, and therefore, the storage tank 5 has a drain valve (not shown).
Is provided.

FIG. 5 shows an example of the plate-like body 3 suitable for use in a large room such as a large lecture room. As shown in the figure, the plate-like body 3 is an endless base plate material 39 in which a plurality of small and vertically long plate pieces 39A having a small weight and rigidity, such as plastic, are bendably connected to each other, and are integrally formed on the entire outer periphery thereof. The writing surface 3S, which is the surface of the sheet-like body 40 and is adhered to the sheet-like body 40, is similarly subjected to a matting treatment. The plate-like body 3 is wound between the support shafts 14 together with the base plate material 39, and is rotatably supported.
The distance between the support shafts 14, 14 is set to be relatively large, and the orbit 41 of the plate-like body 3 facing the front side is curved in a concave arc shape via the guide tool 42 to allow writing from a wide range. The surface can be read. The guide tool 42 is configured by the guide rollers 43 arranged on the horizontal frame pieces 10 and 11 along the locus of the concave arc, for example.

Further, as another example of the plate-shaped body 3, a support shaft 1
For example, using a chain wheel concentric with 4, the drive chain is made to travel in line with the orbit 41, and the plate pieces 39 are individually suspended from the link pieces of the drive chain and supported in a sheet shape on the entire outer periphery thereof. Stick the body 40 and plate 3
May be formed. At this time, each plate piece 39 is attached to the sheet-like body 4
0 and a drive chain so as to be bendable and endlessly connected, and this drive chain functions as a guide tool 42.

The plate-shaped body 3 is rotated in the lateral direction,
A horizontal support shaft may be used so that it can be rotated in the vertical direction, and the writing plate-shaped device 1 of the present application can be changed into various modes.

[0038]

EFFECT OF THE INVENTION Since the present invention is constructed as described above, it is possible to efficiently and evenly erase a handwriting trace over a wide range without causing stains and the like on the surroundings, and perform new writing early after erasing. sell. In addition, since it has a liquid storage tank, it can maintain its erasing ability for a long time.In addition, because it has a brush-like tool, even if the writing surface is frosted, for example Ink that enters the fine irregularities on the surface can be reliably and easily removed, and, for example, the conventional white pen can be used, and the writing surface can be kept clean for a long time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a schematic sectional view thereof.

FIG. 3 is a schematic cross-sectional view showing another embodiment of the brush-shaped body.

FIG. 4 is a schematic sectional view showing still another embodiment of the brush-shaped body.

FIG. 5 is a partial perspective view showing another embodiment of the plate-shaped body.

[Explanation of symbols]

2 frame 3 Plates 3S Writing surface 5 Liquid storage tank 6 pumps 7 Brush SW switch

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-62-111796 (JP, A) JP-A-57-109872 (JP, A) JP-A-3-215083 (JP, A) JP-A-56- 76460 (JP, A) JP-A-53-82507 (JP, A) JP-A-6-238226 (JP, A) JP-A-8-60065 (JP, A) Actual Kaihei 2-54591 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B43L 1/00 B43L 1/04-1/10 B43L 21/00-21/02 B43K 8/02 C09D 11/16

Claims (3)

(57) [Claims] 1. Colored to colorless by chemical reaction with water
Writing instrument for white board having decolorizable ink, and this writing instrument
Writing plate having a sheet-like plate member to be written by a tool
A writing system including a writing device, wherein the writing plate device stores water containing a water in a frame body that rotatably supports a sheet-like plate body having a writing surface to be written by the writing instrument. The liquid tank and the inside of this storage tank
A pump for applying water to the plate-like body, a brush-like tool for overwriting the writing surface of the plate-like body, and a switch for operating the pump together with the circulation of the plate-like body ,
Is also said writing surface is matte Rutotomoni, the writing instrument is 2- (4-dodecyloxy-3-methoxy styryl) quinoline, 3-cyclohexylamino -6
-Chloro-fluorane, 3-diethylaminobenzo [a] -fluorane, 3- (4-dimethylamino-2-
Ethoxyphenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-azaphthalide, 3,3-
Bis [4-diethylamino-2-ethoxyphenyl]-
To chromatic and one or more electron donative coloration compound selected from the group consisting of 4-azaphthalide, the ink anhydrous obtained by mixing an electron-accepting color-developing compound selected from the group consisting of zinc salicylate and bisphenol A A writing system characterized by that. 2. The brush-like tool is provided with a rubber blade-shaped draining piece for draining off water applied to the plate-shaped body, on the downstream side of the circulation of the plate-shaped body. 1
Writing system of the description. 3. The liquid storage tank is coated on the plate-like body.
The writing system according to claim 1 or 2, which is connected to a conduit for collecting water and returning it to the liquid storage tank.
Mu .