JP3469638B2 - White plate device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a white-plate-like apparatus for applying a liquid such as water to a white-plate-like body to erase a writing mark on the white-plate-like body. 2. Description of the Related Art In recent years, in classes, meetings, meetings, briefing sessions, etc., a white board written with a water-based felt pen or the like has been frequently used instead of a so-called blackboard using chalk. This product 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, and as a writing tool, powder pigment is suspended in alcohol. A stirred felt pen is used. Therefore, the written mark becomes the adhesion of only the powder pigment without the binder, and can be easily erased by wiping with an eraser such as a dry cloth. However, in such a conventional writing instrument, since the wiped pigment adheres to the eraser, frequent cleaning of the eraser is necessary, and sometimes the pigment is scattered. There is a problem that the surroundings are soiled. [0004] Accordingly, the present inventor has disclosed in Japanese Patent Application No. 5-4734.
In No. 5, crystal violet lactone; malachite green lactone; 1.3 dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo [α] -fluoran; 3-cyclohexylmethylamino-6-methyl-7-anilinofluoran Benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2- (phenyliminoethanedylidene) -3.3-trimethyl-indoline; 1.3.3-trimethyl-indolino-7'-
One or more electron-donating coloring compounds selected from the group A consisting of chlor-β-naphthospiropyran; di-β-naphthospiropyran; N-acetylauramine; N-phenylauramine; rhodamine B lactam; The inventors proposed a novel anhydrous ink mixed with an electron-accepting color developing compound selected from the group B consisting of zinc salicylate and bisphenol A, and proposed to solve the above-mentioned problem by using the ink. [0005] That is, the ink has a characteristic that it develops a color by the molecular contact between the coloring compound and the developing compound, but loses the effect of the developing compound due to adhesion of water and returns from the color to a colorless state. However, the erasure of the handwriting is not caused by wiping the pigment itself, but by erasing the ink itself by a chemical reaction with water. [0006] Therefore, in order to erase the writing marks of this ink,
New erasing means different from a conventional erasing tool such as a dry cloth is required. [0007] That is, the present invention has been devised in view of the above situation, and an object thereof is to provide an applicator for applying a liquid such as water in a liquid storage tank to a white plate. On the basis of this, an object of the present invention is to provide a white plate-like device capable of solving the above-mentioned problems. [0008] The invention according to claim 1 of the present application discolors from color to colorless by a chemical reaction with water.
Writing implement with ink
And a white plate-like device having an endless white plate-like body.
A white plate-shaped device used in a writing system,
The ink is crystal violet lactone; malachite green lactone; 1.3 dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo [α]-
Fluoran; 3-cyclohexylmethylamino-6-methyl-7-anilinofluoran; benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2- (phenyliminoethanedilidene) -3.3-trimethyl-indoline;
1.3.3-Trimethyl-indolino-7'-chloro-
β-naphthospiropyran; di-β-naphthospiropyran; N-acetyl auramine; N-phenyl auramine; rhodamine B lactam; one or more electron-donating color compounds selected from group A, and zinc salicylate. And an electron-accepting color developing compound selected from the group B consisting of
The endless white plate written by the writing instrument
The body, the reservoir and the water in this reservoir
On the white plate as a moderate amount of water compared to immersion
The ink by chemical reaction with water
A white plate-shaped device comprising a coating tool for erasing a color mark to erase a writing mark . An applicator for applying a liquid, which is water, to a white plate is provided. Accordingly, it is possible to erase the handwriting on the white plate-like body by the ink proposed in the above-mentioned Japanese Patent Application No. 5-47345, and to prevent the surroundings from being stained. Also, since a suitable amount of moisture 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, the handwriting can be efficiently erased over a wide range by the coating tool, and since the 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, it can be uniformly and uniformly erased, and even if the ink is erased, water does not discolor or become contaminated, so that maintenance is convenient. An embodiment of the present invention will be described below with reference to the drawings. As shown in the figure, the white plate-like device 1 has a frame 2 on which a white plate-like body 3, a liquid storage tank 5, and a coating tool 6 are attached. As shown in FIGS. 1 and 2, in the present embodiment, the frame 2 is provided between a pair of vertical frame pieces 9 and 9 between upper end portions and a middle portion thereof, and a horizontal frame piece 10 and a horizontal frame piece therein. At the lower end of the vertical frame piece 9, a leg piece 13 extending forward and backward and provided with wheels 12 such as casters on the lower surface is provided at the lower end of the vertical frame piece 9. In the present embodiment, the white plate-like body 3 includes a pair of left and right white plate-like bodies 3A and 3B.
In this example, the belt has an endless belt shape. Each white plate 3
A and 3B can be suitably used, for example, those in which 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 and the like is coated with, for example, a fluorine resin. . Each of the white plate-like bodies 3 is driven by a driving tool 15.
Each is independently rotatably supported. 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. Support shaft 2
1, 22, 23 and a tension shaft 25. The drive shaft 16 has a pair of left and right cylindrical pulleys 27 rotatably mounted on a center shaft between the vertical frames 9 and 9 via bearing pieces 26, as schematically shown in FIG.
A, 27B. 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 arranged, for example, on the 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 pulley 27A, 27B
Can rotate independently by the operation of each motor M1, M1,
The white plates 3A and 3B wound around the pulleys 27A and 27B are individually driven. The support shafts 21, 22, and 23 are shown in FIGS.
As shown in FIG. 1, the first and second support shafts 21 and 22 are long shafts pivotally supported between the side plates 17 and 17 and receive the back surfaces of the white plate-shaped bodies 3A and 3B. Drive shaft 1
6 and are mounted at the same height in this example. The third support shaft 23 receives the surfaces of the white plate-like bodies 3A and 3B and is arranged behind the second support shaft 22. In this embodiment, the tension shaft 25 is a pair of left and right shaft pieces 25 for receiving the respective back surfaces of the white plate-like bodies 3A and 3B.
A, 25B, and each shaft piece 25A, 25B is vertically moved between the side plates 17, 17 and a pair of parallel side plate pieces 19A, 19B projecting rearward from the inner horizontal frame piece 11, respectively. To be adjustable in height. Therefore, the shaft pieces 25A and 25B can be freely stretched without loosening the white plate-like bodies 3A and 3B. The drive shaft 16 is mounted on the frame 2.
And the first support shaft 21, the white plate-like bodies 3 </ b> A, 3 </ b> B are flatly supported from the back surface side in a region Y, and the region Y
Is provided with a back plate 32 that enables writing on the white plate-like bodies 3A and 3B. The back plate 32 is mounted on the drive shaft 1.
6 has a flat plate-like substrate 32A that is substantially parallel to a plane passing through the front edge of the first support shaft 21 and the front edge of the first support shaft 21, and the substrate 32A is separated from the plane by the front side so that the white plate-shaped body 3A , 3B
Is held from the back without wrinkles. In the present embodiment, the applicator 6 is a relatively large-diameter roller body having at least a water-absorbing body disposed on the surface thereof, and the first and second support shafts 21 and 22 are provided. At a position below and in contact with the support shafts 21, 22, for example, it is pivotally connected between the side plates 17, 17. In addition, the coating tool 6 is connected to a rotation driving tool 33 in this example. The rotary drive 33 has a motor M2 mounted on the inner surface of the vertical frame 9 via a mounting plate or the like.
The chain wheel provided on the output shaft 2 and the chain wheel provided on one end of the applicator 6 are connected by an endless link 33A. Accordingly, the applicator 6 can contact the surfaces of the white plate-like bodies 3A and 3B between the first support shaft 21 and the second support shaft 22, and the white plate-like bodies 3A and 3B are connected by the electric motor M1. At the time of orbit, the absorbed water is applied to the surface of the white plate-shaped body to erase the writing marks. In addition, by rotating the coating tool 6 by the rotation driving tool 33 during the rotation, the water-absorbed surface of the coating tool 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 parts, and the left and right parts may be independently controlled in rotation. The liquid storage tank 5 is, for example, a rectangular container having an upper surface opening for storing a liquid which is water therein, and is removably mounted and held on the horizontal frame piece 11 therein. The liquid storage tank 5 has a height at which a part of the applicator 6 can be immersed in the liquid to be stored, so that the surface of the applicator 6 absorbs the liquid. In this embodiment, the liquid storage tank 5 is shown in FIG.
As shown in FIG. 5, the coating tool 6 is placed inside a container-like base box 5A.
The roll 35 is pivotally attached to the base box 5A, and the lower edge of the roll 35 is located near the bottom surface of the base box 5A. Therefore, even when the remaining amount of the stored liquid is reduced, 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 move in parallel up and down and is urged upward by a spring piece or the like. This makes it easy to take out the liquid storage tank 5 from the front and installs the roll 35
And the applicator 6 can be brought into contact. A drain port 5B for discharging the liquid to the outside is provided below the side surface of the base box 5A. The white plate apparatus 1 of this embodiment is provided with a drying device 36 for forcibly drying the white plate 3 and a replenishing tank 37 for replenishing the liquid in the liquid storage tank 5 with the frame 2. The drying tool 36 is a blower in this example, and blows the liquid to be applied between the drive shaft 16 and the tension shaft 25 to dry the liquid. The replenishing tank 37 may replenish the liquid directly to the liquid storage tank, or may automatically replenish the liquid via a pipe, an on-off valve or the like. As shown in FIG. 1, the white plate-like device 1 may be used by connecting a number of white plate-like devices 1 side by side. In this embodiment, as shown in FIG. For example, a hook-shaped engagement fitting 40 for connecting between the vertical frame pieces 9
A connecting tool 40 consisting of A and a locking pin 40B is attached. However, the white plate 3 written on the area Y
A, 3B, each shaft 16, 21, 22,
The ink is made to circulate around 23 and 25, and the writing marks are erased by contact with the water applied by the applicator 6. In addition, the standby portion K, which waits between the drive shaft 16 and the tension shaft 25 of the white plate-like bodies 3A and 3B, is introduced into the area Y as it goes around, so that new writing can be performed early. 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. In this embodiment, for example, one of the white plate members 3A
While the writing trace is erased, writing and erasing are alternately performed such as writing on the other white platy body 3B, thereby eliminating the round-trip waiting time for erasing. It is possible to streamline the recording operation. As described above, the present invention is constituted, so that 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 performed for a long time. Can be maintained throughout.

[Brief description of the drawings] FIG. 1 is a front view showing one embodiment 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 equipment

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-53-82507 (JP, A) JP-A-49-52230 (JP, A) JP-A-4-85374 (JP, A) JP-A-57-825 109872 (JP, A) JP-A-60-6768 (JP, A) JP-A-7-117394 (JP, A) JP-A 64-57093 (JP, U) JP-A-2-54591 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B43L 1/04 C09D 11/16

Claims (1)

(57) [Claims] [Claim 1] From color to colorless by a chemical reaction with water
Writing instrument with decolorable ink and this writing instrument
White plate-like device having an endless white plate-like body to be written
A white plate-like device used in a writing system consisting of
And the ink comprises 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'-
One or more electron-donating coloring compounds selected from the group A consisting of chlor-β-naphthospiropyran; di-β-naphthospiropyran; N-acetylauramine; N-phenylauramine; rhodamine B lactam; When mixed with an electron-accepting developer selected from group B consisting of zinc salicylate and bisphenol A
Both are endless white plate-like bodies written by the writing implement
When the reservoir tank, the water in the liquid storage tank, moderate compared to immerse directly into water
By applying it to the white plate as water
The ink is discolored by a chemical reaction
A white plate-like device characterized by comprising a coating device.