JPH0860065A - Writing utensil - Google Patents

Abstract

PURPOSE: To obtain a writing utensil which enables written pictures, characters, etc., to be instantly erased by applying water, facilitates the work for cleanly erasing and correcting written characters, etc., and enables the reproduction of erased characters, etc. CONSTITUTION: A container 2 contains a colored ink 3 which is prepd. by mixing at least one electron-donating coloring compd. selected from among 2-(4- dodecyloxy-3-methoxys tyryl)quinoline, 3-cyclohexylamino-6-chlorofluoran, 3- diethylaminobenzo[a]fluoran, 3-(4-dimethylamino-2-ethoxyphenyl)-3-(1-ethyl-2- methylindol-3-yl)-4-azaphthalid, 3,3-bis [4-diethylamino-2-ethoxyphenyl]-4- azaphthalid, and 3-cyclohexylmethylamino-6-methyl-7-anilinofluoran and an electron-accepting developing compd. selected between zinc salicylate and bisphenol A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of instantly erasing written pictures, characters, etc. by adhering water, making it possible to easily and cleanly erase and correct characters. The present invention relates to a writing instrument that enables reproduction of erased characters and the like.

[0002]

2. Description of the Related Art Conventionally, pencils, fountain pens, ballpoint pens, water-based / oil-based felt pens, etc. have been widely known as writing instruments. For example, a pencil can be used for erasing or correcting a written mark such as a picture / character written on them. In the case of No. 3, it was necessary to use an eraser or the like utilizing the adsorption effect of rubber, and in the case of a fountain pen, it was necessary to use an ink eraser or the like utilizing the bleaching action. In the case of a felt pen, etc., when writing on a non-permeable surface such as glass or plastic, it can be erased by wiping with a paper or cloth containing a solvent that dissolves ink, When writing on a penetrable surface such as cloth, the ink penetrates into the surface, making it difficult to erase even with the use of a solvent.Therefore, in such a case, the written mark is hidden from above, for example, white correction liquid, white correction Use of tape is required.

[0003]

As described above, in the conventional writing instruments, there is an inconvenience that a dedicated member containing a solvent or the like has to be used for erasing and correcting writing marks, and in recent years, erasing has been performed. There is a strong demand for the emergence of writing instruments that can be easily corrected.

The so-called white plate marker used for a white plate uses an ink in which a powder pigment is suspended and stirred in alcohol. Therefore, a handwriting mark is attached only to the powder pigment after drying. Can be easily wiped off with a cloth. However, such erasing by wiping is limited to a white plate or the like having a non-permeable surface, and the powder pigment scatters and stains the surroundings at the time of wiping, and the efficiency of wicking the pigment is poor due to the characteristics of the ink. There is also a problem that uneven writing such as fading occurs because it cannot follow the fast writing.

Therefore, in view of such a situation, the inventor of the present invention has conducted extensive research on various dyes, pigments and the like. As a result, among the electron-donating color-forming compounds known as dyes, some compounds react with a specific color-developing compound that is zinc salicylate or bisphenol A to develop color from colorless to colored, while adhering to water. It has been discovered that the loss of the effect of the color-developing compound returns the colored state to a colorless state, and this colorless / colored change can be repeated. Then, by using the colored ink agent in which the specific color-forming compound and the color-developing compound are mixed, it has been found that a novel writing instrument that can meet the conventional requirements appears.

That is, the present invention is based on the use of a colored ink agent which is a combination of a specific color-developing compound and a color-developing compound, and the writing and erasing operations can be conveniently and cleanly performed. The object is to provide a writing instrument that can solve the above problems.

[0007]

In order to achieve the above-mentioned object, the writing instrument of the present invention 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, 3,3
-Bis [4-diethylamino-2-ethoxyphenyl]
-4-azaphthalide, 3-cyclohexylmethylamino-6-methyl-7-anilinofluorane, one or more electron-donating color compounds selected from the group A, and a group consisting of zinc salicylate and bisphenol A A colored ink agent mixed with an electron-accepting color developing compound selected from B is contained in the container.

[0008]

The electron-donating color-forming compound selected from the group A is brought into molecular contact with an electron-accepting color-developing compound consisting of zinc salicylate and bisphenol A,
It develops from a colorless color to a color peculiar to each coloring compound. Therefore, a color ink agent can be formed by mixing these. This ink agent loses the effect of the color developing compound due to the adhesion of water, and can change from a colored state to a colorless state. That is, the ink agent is erased only by the adhesion of water, and the handwriting can be erased. In addition, since the effect of the color developing compound is lost by water, the decolored state is maintained on the paper surface even after drying, so that new writing with the writing instrument is possible on the decolorized portion, and the correction of characters etc. The correction work can be conveniently performed.

Further, since this writing instrument causes the ink agent itself to be decolorized by water, it is possible to erase and correct the written mark even when writing on the permeable surface, depending on the material of the writing object. You can write and modify without writing. Also clothes,
It is possible to easily erase and clean letters on walls, furniture, etc., adhesion due to erroneous operation, and stains. Note that the handwriting in the decolored state can be recolored by, for example, application of the color-developing compound, and thus the decolorization can be used to record and keep important secrets in a colorless state on paper. It can also be used.

When a writing instrument is used as a marker for a white plate, in addition to the above-mentioned effect, the powder pigment is not scattered and is clean, and the ink is smoothly sucked up by the pen tip, so that blurring or unevenness of handwriting is prevented. You can.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, a writing instrument 1 is in the form of a felt pen in which a liquid colored ink agent 3 is contained in a container body 2. In this example, the writing instrument 1 is used as, for example, a white plate marker.

The container body 2 has a pen-shaped cylindrical body 6 whose rear end is sealed by a bottom lid 5, a pen tip metal fitting 7 fitted to the front end thereof, and a cap which covers the pen tip metal fitting 7. Piece 9
And

In the body portion 6, a cotton-like impregnated body 10 impregnated with the liquid colored ink agent 3 is housed while being covered with a middle cylinder 11.

The nib 7 is composed of a nib core 10 for taking out the colored ink agent 3 and a nib holding piece 11 for holding the nib, and the nib holding piece 11 is used for the body 6. A partition wall 11A that closes the opening at the front end, a flange 11B that extends rearward from its periphery and is fitted to the body portion 6, and a cone-shaped core 1 that extends forward from the partition wall 11A.
A holding portion 11C that holds 0 by projecting its tip is integrally formed. The core material 10 is, for example, a felt material in which filaments are bundled, and the rear end thereof is the partition wall 11A.
Penetrating to the impregnated body 10 and sucking out the colored ink agent 3 due to a capillary phenomenon or the like, and the pen tip portion 10A at the tip.
The colored ink agent 3 can be taken out from and written on.

The colored ink agent 3 contains an electron-donating color developing compound and an electron-accepting color developing compound such as ethanol,
In this example, a liquid having a low viscosity is formed by mixing in an anhydrous solvent such as alcohol.

As the above-mentioned electron-donating color-forming compound,
2- (4-dodecyloxy-3-methoxystyryl) quinoline, 3-cyclohexylamino-6-chloro-fluorane, 3-diethylaminobenzo [a] -fluorane, 3- (4-dimethylamino-2-ethoxyphenyl)- 3- (1-Ethyl-2-methylindole-3-
Yl) -4-azaphthalide, 3,3-bis [4-diethylamino-2-ethoxyphenyl] -4-azaphthalide, 3-cyclohexylmethylamino-6-methyl-7
Anilinofluorane, which is a group A, can be used, and as the colored ink agent 3, one or more kinds selected from this group A are used.

The chemical structural formula of "2- (4-dodecyloxy-3-methoxystyryl) quinoline" is shown in FIG. 2, and the chemical structural formula of "3-cyclohexylamino-6-chloro-fluorane" is shown in FIG. A diagram showing the chemical structural formula of "3-diethylaminobenzo [a] -fluorane" is shown in Fig. 3, and a diagram showing "3- (4-dimethylamino-2-ethoxyphenyl) -3- (1-ethyl" is shown in Fig. 4. The chemical structure of "-2-methylindol-3-yl) -4-azaphthalide" is shown in FIG. 5, and the chemistry of "3,3-bis [4-diethylamino-2-ethoxyphenyl] -4-azaphthalide" is shown in FIG. FIG. 6 shows a structural formula, and FIG. 7 shows a chemical structural formula of “3-cyclohexylmethylamino-6-methyl-7-anilinofluorane”.

As the electron-accepting color developing compound, a compound selected from zinc salicylate and bisphenol A group B is used.

The mixture of the electron-donating color-forming compound of group A and the electron-accepting color-developing compound of group B develops a color unique to each color-forming compound by mutual molecular contact. Also, when water is attached to this mixture, it functions as if the water loses the color-developing compound, instantly changing the color development to colorless and maintaining a colorless (decolored) state even after drying the water. To be done. Therefore, the ink mark 3 can be newly written on the decolorized mark. Further, since the color erasing is performed by a function such that the color developing compound in the ink agent 3 is lost, it is necessary to newly apply an anhydrous color developing liquid containing the color developing compound after the drying so that the writing before the color erasing is performed. Traces are reproduced in color.

As described above, since the writing instrument 1 using the ink agent 3 can be erased by adhering water, saliva, etc., it is extremely easy to erase and correct writing marks, and at the same time, it can be applied to clothes, walls, etc. It is possible to easily clean the written notes and the adhered dirt caused by erroneous operation, and handle them conveniently.

In addition, since powder or the like is not generated or scattered during decoloring, the surrounding environment can be kept clean, and since these are completely dissolved in the solvent to form a liquid, the wicking by the core material 10 is smooth. You can write evenly and smoothly.

Further, the ink agent 3 can be erased even when written on the permeable surface. Therefore, in addition to being used as a marker for a white plate, various materials such as paper, cloth, wood and plastic can be used. Can be used for.

Since the ink agent 3 is in a liquid state, it can be formed as, for example, a writing pen, a fountain pen, a ballpoint pen, etc., in addition to the felt pen.

(Specific Examples) Table 1 shows specific examples of the ink agent using the electron-donating color-forming compound of the present invention.

[0025]

[Table 1]

The ink agents of Specific Examples 1 to 7 can be obtained by stirring the compounds shown in Table 1 with a stirrer for about 20 minutes. It was also confirmed that when water adheres to the characters written with this colored ink agent, the color is rapidly erased, and the cycle of (writing)-(decoloring with water)-(drying)-(writing) can be repeated.

An anhydrous developer was obtained by stirring 3 parts by weight of zinc salicylate in 68 parts by weight of dimethyl phthalate and 29 parts by weight of ethanol for about 20 minutes. When this was applied to the handwriting of the colored ink agent 3 which had been decolorized with water, the color rapidly recurred, and the writing marks (erasing with water)-(drying)-(recoloring with the developer) It was confirmed that the cycle could be repeated.

[0028]

As described above, since the writing instrument of the present invention is configured, the writing trace can be erased by the adhesion of water, and the correction work of characters and the like can be performed easily and cleanly, and the erased characters can be erased. It is also possible to recycle the same, and the range of use can be greatly expanded.

[Brief description of drawings]

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

FIG. 2 is a chemical formula of 2- (4-dodecyloxy-3-methoxystyryl) quinoline.

FIG. 3 is the chemical formula for 3-cyclohexylamino-6-chloro-fluorane.

FIG. 4 is a chemical formula of 3-diethylaminobenzo [a] -fluorane.

FIG. 5 3- (4-Dimethylamino-2-ethoxyphenyl) -3- (1-ethyl-2-methylindole-3
-Yl) -4- is the chemical formula of azaphthalide.

FIG. 6 is the chemical formula of 3,3-bis [4-diethylamino-2-ethoxyphenyl] -4-azaphthalide.

FIG. 7 is a chemical formula of 3-cyclohexylmethylamino-6-methyl-7-anilinofluorane.

[Explanation of symbols]

 2 Container 3 Colored ink agent

Claims (1)

[Claims] 1. 2- (4-Dodecyloxy-3-methoxystyryl) quinoline, 3-cyclohexylamino-6-
Chloro-fluorane, 3-diethylaminobenzo [a]
-Fluoran, 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-6-
Group A consisting of methyl-7-anilinofluorane
Group B consisting of zinc salicylate and bisphenol A, and one or more electron-donating color compounds selected from
A writing instrument comprising a container and a colored ink agent mixed with an electron-accepting color developing compound selected from