JP2004001413A - Writing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a whiteboard device itself and its surroundings from being stained, then cleanly erase a handwriting evenly and efficiently over a broad area and further, conveniently maintain the whiteboard device in good condition. <P>SOLUTION: This writing system comprises a writing utensil having an ink which is decolored from a colored state to a colorless state by a chemical reaction with water and the whiteboard device on which an image is written using the writing utensil. The ink is obtained by mixing a specific electron-donative coloring compound containing a crystal violet lactone and a specific electron-receptive developing compound containing zinc salicylate. The whiteboard device is equipped with a whiteboard body on which an image is written using the writing utensil, a storage tank and an applicator for decoloring the ink and erasing the handwriting by applying the water contained in the storage tank to the whiteboard body. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a writing instrument including a writing instrument having an ink that can be decolorized from color to colorless by a chemical reaction with water, and a white plate-like device having an endless white plate-like body written by the writing instrument.
[0002]
[Prior art]
In recent years, in classes, meetings, meetings, briefings, and the like, a writing system including a white board and a writing instrument for a white board has been frequently used instead of a so-called blackboard using chalk. The white board used in this writing system has a non-permeable, smooth writing surface that has been subjected to enamel treatment or high-temperature baking of paint, etc., on the surface of a substrate such as steel. A felt pen is used in which a powder pigment is suspended and stirred. Therefore, the handwriting is only adhered by the powder pigment without a binder, and can be easily erased by wiping with an eraser such as a dry cloth.
[0003]
[Problems to be solved by the invention]
However, in such a conventional writing system, since the wiped pigment adheres to the eraser, frequent cleaning of the eraser is necessary, and there is a problem that the pigment sometimes scatters and stains the surroundings.
[0004]
Accordingly, the present inventor has disclosed in Japanese Patent Application No. 5-47345, crystal violet lactone; malachite green lactone; 1.3 dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo [α] -fluoran; 3-cyclohexylmethyl. Amino-6-methyl-7-anilinofluoran; benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2- (phenyliminoethanedylidene) -3.3-trimethyl-indoline; At least one electron selected from the group A consisting of trimethyl-indolino-7'-chloro-β-naphthospiropyran;di-β-naphthospiropyran; N-acetyl auramine; N-phenyl auramine; rhodamine B lactam; Donation By devising a novel anhydrous ink in which a compound and an electron-accepting color developing compound selected from the group B consisting of zinc salicylate and bisphenol A are devised, and the writing implement using the same is employed in a writing system, the above problem is solved. It is proposed to solve the point.
[0005]
That is, the ink has the property of developing a colored color by the molecular contact between the coloring compound and the developing compound, and having the property that the effect of the developing compound is lost due to the adhesion of water and returns from the colored to a colorless state. The elimination of the trace is not due to the wiping of the pigment itself, but to the decolorization of the ink itself by a chemical reaction with water.
[0006]
Therefore, a new erasing means different from a conventional erasing tool such as a dry cloth is required for erasing the writing marks of the ink.
[0007]
That is, the present invention has been devised in view of the above situation, and an object of the present invention is to provide a white-plate-like device provided with an applicator for applying water contained in a liquid storage tank to a white-plate-like body. And the ink, which is decolorized by a chemical reaction with water, on the basis of which the characteristics of the ink can be maximized, and the white plate-like device itself and its surroundings can be prevented from being stained and written. It is an object of the present invention to provide a writing system capable of efficiently and evenly erasing a trace over a wide range and evenly, and also making maintenance of a white plate-shaped device convenient.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 of the present application is a writing system including a writing implement having an ink capable of being decolorized from color to colorless by a chemical reaction with water, and a white plate-like device having an endless white plate-like body to be written by the writing implement. And
The ink of the writing instrument is crystal violet lactone; malachite green lactone; 1.3 dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo [α] -fluorane; 3-cyclohexylmethylamino-6-methyl-7-anilino. Fluoran; benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2- (phenyliminoethanedylidene) -3.3-trimethyl-indoline; 1.3.3-trimethyl-indolino-7'-chloro-β N-acetyl auramine; N-phenyl auramine; rhodamine B lactam; one or more electron-donating color compounds selected from the group A consisting of zinc salicylate; Together formed by combining an electron-accepting color-developing compound selected from the group B consisting of the scan phenol A,
The white plate device,
An endless white plate-like body written by the writing implement,
A liquid storage tank,
By applying the water in this liquid storage tank to the white plate-like body as a moderate amount of water as compared to directly immersing it in water, the ink is decolorized by a chemical reaction with water to erase a writing mark. It is characterized by having clothing.
[0009]
The white plate-shaped device includes an applicator for applying water to the white plate. Therefore, the handwriting on the white plate-like body by the ink proposed in the above-mentioned Japanese Patent Application No. 5-47345 can be erased by the decoloring action of the ink itself, thereby preventing the surroundings from being stained. Also, since a suitable amount of water can be given to the white plate-like body as compared with direct immersion in water, the water after application can be dried quickly, and new writing can be performed early after erasing.
[0010]
In addition, writing marks can be efficiently erased over a wide range by the coating tool, and since the liquid storage tank is provided, the erasing ability can be maintained for a long time. Further, since the ink is decolored by the adhesion of water, the ink can be uniformly and uniformly erased, and the erasure of the ink does not discolor or contaminate the water, thereby facilitating maintenance.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
The writing system of the present invention is a writing system including a writing implement having ink and a white plate-shaped device 1 having an endless white plate-shaped body 3 written by the writing implement, wherein the ink has the electron donating property described above. By mixing a color-forming compound and an electron-accepting color developing compound, it is possible to discolor from color to colorless by a chemical reaction with water.
[0012]
Further, as shown in FIG. 1, the white plate-shaped device 1 includes a frame 2, a white plate-shaped body 3, a liquid storage tank 5, and water in the storage tank applied to the white plate-shaped body 3. A coating tool 6 for erasing the ink by reaction to erase the writing marks.
[0013]
As shown in FIGS. 1 and 2 in this example, the frame 2 has a horizontal upper frame piece 10 and a middle horizontal frame piece 11 between a pair of vertical frame pieces 9, 9 between upper end portions and a middle portion. At the lower end of the vertical frame piece 9, there is provided a leg piece 13 extending back and forth and provided with wheels 12 such as casters on the lower surface.
[0014]
Further, the white plate-shaped body 3 includes a pair of left and right white plate-shaped bodies 3A and 3B in the present embodiment, and each of the white plate-shaped bodies 3A and 3B has an endless band shape in the present embodiment. Each of the white plate-like bodies 3A and 3B is obtained by subjecting the surface of a non-stretchable and waterproof sheet-like base material in which the front and back surfaces of a woven fabric are covered with a synthetic resin such as vinyl to a coating treatment with, for example, a fluorine resin. Can be suitably used.
[0015]
Each of the white plate-like bodies 3 is supported by the driving tool 15 so as to be independently rotatable around the circumference.
[0016]
The driving tool 15 is attached via a driving shaft 16 spanned between the upper end portions of the vertical frame pieces 9 and a side plate 17 provided on the inner surface of the vertical frame pieces 9. 21, 22 and 23 and a tension shaft 25.
[0017]
The drive shaft 16 includes a pair of left and right cylindrical pulleys 27A and 27B rotatably inserted through a bearing piece 26 on a center axis between the vertical frames 9 and 9 as schematically shown in FIG. Equipped. A gear 29 such as a worm wheel is fixed to the outward end of each of the pulleys 27A and 27B, and the gear 29 is disposed on, for example, an output shaft of the electric motor M1 attached to the horizontal frame piece 10, for example. The gear meshes with a gear 30 such as a worm. Therefore, each of the pulleys 27A and 27B can rotate independently by the operation of each of the motors M1 and M1, and individually drives the white plate-like bodies 3A and 3B wound around the peripheral surfaces of the pulleys 27A and 27B.
[0018]
As shown in FIGS. 2 and 3, the support shafts 21, 22, and 23 are long shafts that are pivotally supported between the side plates 17, 17, and include first and second support shafts 21, 22. Are located below the drive shaft 16 and are mounted at the same height in this example. The third support shaft 23 receives the surfaces of the white plate-shaped bodies 3A and 3B and is arranged behind the second support shaft 22.
[0019]
In this example, the tension shaft 25 is composed of a pair of left and right shaft pieces 25A and 25B that receive the back surfaces of the white plate-shaped bodies 3A and 3B, respectively. The shaft pieces 25A and 25B are respectively connected to the side plates 17 and 17 and the middle plate. And a pair of parallel side plate pieces 19A and 19B projecting rearward from the horizontal frame piece 11 so as to be vertically adjustable in height. Therefore, each of the shaft pieces 25A and 25B can be freely stretched without loosening the white plate-like bodies 3A and 3B.
[0020]
The frame 2 supports the white plate-like bodies 3A and 3B in a plane from the back side in a region Y between the drive shaft 16 and the first support shaft 21. A back plate 32 is provided to enable writing on the bodies 3A and 3B. The back plate 32 has a plate-like substrate 32A substantially parallel to a plane passing through the front edge of the drive shaft 16 and the front edge of the first support shaft 21, and the substrate 32A is located forward of the plane. , The white plate-like bodies 3A and 3B are held from the back surface without wrinkling.
[0021]
In addition, in the present embodiment, the applicator 6 is a relatively large-diameter roller body having a water-absorbing body having a high water-absorbing property disposed on at least the surface thereof. At a position in contact with the support shafts 21 and 22, for example, it is pivotally connected between the side plates 17 and 17. Further, the coating device 6 is connected to a rotation driving device 33 in this example.
[0022]
The rotation driving tool 33 has, for example, a motor M2 attached to the inner surface of the vertical frame 9 via a mounting plate or the like, and is provided at a chain wheel provided on the output shaft of the motor M2 and at one end of the coating tool 6. The chain wheel is connected with the endless link 33A.
[0023]
Therefore, the applicator 6 can come into contact with the surfaces of the white plate-like bodies 3A and 3B between the first support shaft 21 and the second support shaft 22, and when the white plate-like bodies 3A and 3B rotate by the electric motor M1. Then, the absorbed water is applied to the surface of the white plate-shaped body to erase the writing marks. In addition, by rotating the applicator 6 by the rotation driving tool 33 during the rotation, the water-absorbed surface of the applicator 6 can be constantly brought into contact with the surface of the white plate-like body, and uneven coating can be suppressed. In addition, by providing a difference between the rotation speed of the white plate-like body and the rotation speed of the coating tool 6, the decoloring can be more reliably performed by rubbing the coating tool 6 with the white plate-like bodies 3A and 3B. For this reason, it is preferable that the direction of rotation is different from the direction of rotation. When the directions are the same, the occurrence of scratches on the white plate-like body due to rubbing can be reduced. Note that, similarly to the drive shaft 16, the coating tool 6 may be divided into left and right sides, and the left and right sides may be independently controlled in rotation.
[0024]
The liquid storage tank 5 is, for example, a rectangular container having an upper surface opening for storing water therein, and is removably mounted and held on the horizontal frame piece 11 therein.
[0025]
The liquid storage tank 5 has a height at which a part of the applicator 6 can be immersed in the water to be stored, so that the surface of the applicator 6 absorbs water.
[0026]
As shown in FIGS. 3 and 5, the storage tank 5 is provided with a roll 35 in contact with the coating device 6 inside a container-like base box 5A, as shown in FIGS. It is located near the bottom surface of box 5A. Therefore, even when the remaining amount of the stored water decreases, it is guaranteed that the applicator 6 absorbs water through the roll 35. In addition, as the roll 35, a sponge material, a felt material, a cloth material, or the like having a greater water absorption than the applicator 6 can be suitably used. It is preferable that the roll 35 can be moved in parallel up and down and is urged upward by a spring piece or the like. This facilitates taking out of the liquid storage tank 5 from the front and coating the roll 35 with the roll 35 by mounting. The tool 6 can be contacted. A drain 5B for discharging water to the outside is provided below the side surface of the base box 5A.
[0027]
In the white plate-shaped device 1 of this embodiment, a drying tool 36 for forcibly drying the white plate-shaped body 3 and a supply tank 37 for supplying water to the liquid storage tank 5 are provided on the frame 2. The drying tool 36 is a blower in this example, and blows the water to be applied between the drive shaft 16 and the tension shaft 25 to dry.
[0028]
The replenishment tank 37 may be configured to automatically replenish water to the liquid storage tank or automatically through a pipe, an on-off valve, or the like.
[0029]
Further, as shown in FIG. 1, the white plate-like device 1 may be used by connecting a large number of white plate-like devices 1 horizontally. In this example, as shown in FIG. A connecting member 40 that connects the frame pieces 9 and 9 includes, for example, a hook-shaped engaging metal member 40A and a locking pin 40B.
[0030]
However, the white plate-like bodies 3A, 3B written on the area Y are circulated around the respective axes 16, 21, 22, 23, 25 using the electric motor M1. The color is erased by contact with. In addition, the standby portion K of the white plate-shaped members 3A and 3B, which waits between the drive shaft 16 and the tension shaft 25, is introduced into the region Y with the rotation, so that new writing can be performed at an early stage. At the time of introduction of the standby portion K, the water to be applied is dried by the drying tool 36 to ensure new writing.
[0031]
In this example, writing and decoloring are alternately performed, such as writing on the other white plate-shaped body 3B while erasing the writing trace of one white plate-shaped body 3A. In addition, it is possible to eliminate the round-trip waiting time for decoloring, and to improve the efficiency of recording work.
[0032]
【The invention's effect】
As described above, since the present invention is configured, a handwriting can be efficiently and uniformly erased over a wide range without causing stains or the like in the surroundings, and the erasing effect can be maintained for a long time.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a white plate device used in a writing system of the present invention.
FIG. 2 is a perspective view thereof.
FIG. 3 is a schematic sectional view thereof.
FIG. 4 is a schematic sectional view showing a drive shaft.
FIG. 5 is a partial perspective view illustrating a liquid storage tank.
FIG. 6 is a perspective view showing a connector.
[Explanation of symbols]
3, 3A, 3B White plate 5 Storage tank 6 Coating tool

Claims (1)

A writing system including a writing implement having an ink that can be decolorized from color to colorless by a chemical reaction with water, and a writing system including a white plate-like device having an endless white plate-like body written by the writing implement,
The ink of the writing instrument is crystal violet lactone; malachite green lactone; 1.3 dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo [α] -fluorane; 3-cyclohexylmethylamino-6-methyl-7-anilino. Fluoran; benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2- (phenyliminoethanedylidene) -3.3-trimethyl-indoline; 1.3.3-trimethyl-indolino-7'-chloro-β N-acetyl auramine; N-phenyl auramine; rhodamine B lactam; one or more electron-donating color compounds selected from the group A consisting of zinc salicylate; Together formed by combining an electron-accepting color-developing compound selected from the group B consisting of the scan phenol A,
The white plate device,
An endless white plate-like body written by the writing implement,
A liquid storage tank,
By applying the water in this liquid storage tank to the white plate-like body as a moderate amount of water as compared to directly immersing it in water, the ink is decolorized by a chemical reaction with water to erase a writing mark. A writing system characterized by comprising a clothing.

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