JPH0987565A - Recording and erasing tools - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a recording tool such as a marker or a marking device capable of recording a marking that can be easily erased by using a dedicated decoloring agent. According to the present invention, as a recording tool, a metal complex salt dye,
A tank portion filled with ink containing at least one oil-soluble dye selected from xanthene dyes, anthraquinone dyes, and triarylmethane dyes as a main component, and a pen tip portion with which the ink in the tank portion is impregnated. Equipped pen,
Alternatively, there is provided a summing device including a tank part filled with the ink and a sump thread impregnated with the ink in the tank part. Further, the present invention, as a decoloring tool, a tank portion filled with a decoloring agent containing a chlorine-based oxidant as a main component that easily decolors characters, marking lines, etc. recorded by these recording tools,
Provided is a pen including a pen tip portion which is impregnated with a decoloring agent in a tank portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly used for marking construction (construction, civil engineering, landscaping, etc., or construction materials including secondary concrete products, construction materials (marks, symbols, The present invention relates to a recording tool used for applying a concept including both marks and lines (the same applies hereinafter) and an erasing tool for erasing a marking formed by the recording tool.

[0002]

2. Description of the Related Art Marking for indicating the position and location of materials in construction work, civil engineering work, etc. has conventionally taken into consideration weather resistance, water resistance, etc. in consideration of writing with black ink, printing with black ink on a plate, It is performed by marking with a marking device (including a so-called ink pot, the same applies below).
Furthermore, paint sprays, oil-based markers, etc. were used.

Since these inks and paints are easily available and easy to handle, they are widely used in construction sites.

The markings using these cannot be easily removed with water or a solvent, and hardly discolor, and can be read semipermanently or for several years.

When the conventional ink or paint or the oil-based marker as described above is used, when characters, marks, lines, etc. are unnecessary or changed after use, or when marking is made by mistake. , It was necessary to scrape off that part with sandpaper, etc., or apply paint from above letters, marks, lines, etc. to hide it.

[0006]

[Problems to be Solved by the Invention] Conventionally, in marking for displaying the position and location of materials in construction work, civil engineering work, etc., an erasing agent or decoloring agent that can easily erase unnecessary characters, marks, lines, etc. Since there is no method, the method of erasing by the above method has been carried out, but such a method has a problem that the erasing work is troublesome and it is difficult to erase easily, quickly and beautifully. The development of a recording tool capable of forming an easily erasable marking and an erasing tool for erasing the marking has been awaited.

In view of the above circumstances, the present invention is a recording tool that can be easily erased when characters, marks, lines, etc. after use become unnecessary or changed, or when marking is made by mistake, and An object is to provide an erasing tool for erasing the marking.

[0008]

DISCLOSURE OF THE INVENTION (1) A recording using a colored ink containing a water-resistant oil-soluble dye as a main component, which is decolored by using a predetermined decoloring agent. Regarding the ingredients.

The present invention further includes (2) the oil-soluble dye is at least one dye selected from the group consisting of metal complex salt dyes, xanthene dyes, anthraquinone dyes and triarylmethane dyes, and coloring The recording tool according to the item (1), wherein the dye is contained in the ink in a ratio of 1 to 10% by weight.

The present invention further provides (3) the recording tool, which is a pen including a tank portion filled with the ink and a pen tip portion with which the ink in the tank portion is impregnated. The present invention relates to a recording tool according to item (2).

The present invention further provides (4) the recording device according to the above (1) or the above-mentioned (1), which is a marking device including a tank portion filled with the ink, and a marking thread impregnated with the ink in the tank portion. The present invention relates to a recording tool according to item (2). .

The present invention further includes (5) above (1).
A decoloring tool using a decoloring agent that decolors a marking recorded by the recording tool according to any one of (4), wherein at least a chlorine-based oxidizing agent is selected as a main component of the decoloring agent. The present invention relates to a decoloring tool containing one kind.

The present invention further provides (6) the decoloring tool comprising a tank portion filled with the decoloring agent and a pen tip portion impregnated with the decoloring agent in the tank portion. The present invention relates to the decoloring tool as described in the item (5).

The present invention is further (7) in the form of an aqueous solution in which the decoloring agent described in the above (5) or (6) contains a chlorine-based oxidizing agent, and the effective chlorine amount in the aqueous solution is 1 to 20. The present invention relates to a recording tool characterized in that the content is% by weight.

The present invention further includes (8) above (1).
The recording tool according to any one of (4) and (5) to
A recording tool set comprising the decoloring tool according to any one of (7).

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The ink used in the recording device of the present invention contains a water-resistant oil-soluble dye as a main component,
As the form of the recording tool, for example, a pen, a marking device (ink pot), a stamp, or the like can be used.

Oil-soluble dyes that are easily decolorized by using the decolorizing agent of the present invention include metal complex dyes (metal-containing dyes),
Examples include xanthene dyes, anthraquinone dyes, triarylmethane dyes, and the like. If the water resistance of the ink is poor, the marking will bleed or disappear due to rain, so a water resistant dye is used.

Decoloring by the decolorizing agent according to the present invention is such that the decomposition reaction of the oil-soluble dye proceeds due to the chlorine ion (chlorine cation) generated from effective chlorine in the chlorine-based oxidizing agent which is the decoloring agent component. Conceivable.

The ink according to the present invention is naturally decolored depending on the strength of external factors such as sunlight, ultraviolet rays, heat and moisture. That is, the stronger the external factors such as sunlight, ultraviolet rays, heat, and moisture, the faster the color fading.

On the contrary, when these external factors are weak,
It is difficult to erase naturally. For example, it takes several months to several years for the color to fade in an underground space where almost no sunlight enters.

When the oil-soluble dye is exposed to sunlight or the like, it is considered that the oil-soluble dye undergoes decomposition of the dye structure due to singlet oxygen oxidation or the like to cause discoloration, and becomes substantially colorless after the discoloration is completed.

When the recording tool of the present invention is used, the recorded characters, marks, lines, etc. are naturally erased by the decoloring agent or due to the above-mentioned external factors and become colorless, so that it is necessary to decolor them. Moreover, since marking can be done easily and the work of erasing the color is not always necessary, labor can be saved.

Further, the recorded characters, marks, lines, etc. are erased and become colorless, which is also aesthetically pleasing.

Further, since the color disappears within 1 week to 6 months outdoors and within 1 month to several years indoors, it becomes possible to perform marking again thereafter.

The ink used in the recording device according to the present invention is the above-mentioned oil-soluble dye dissolved in a dye-dissolving agent. However, as long as the object of the present invention is not impaired, a resin, a surfactant, a viscosity modifier, Various additives such as antibacterial agents, rust preventives and lubricants can be appropriately selected and used.

The present invention will be described in detail below.

The oil-soluble dye used in the present invention includes:
Metal complex salt dyes (metal-containing dyes), xanthene type dyes, anthraquinone type dyes, and triarylmethane type dyes can be used. I. Solvent Red 132, C.I. I. Solvent Red 218, C.I.
I. Solvent Orange 62, C.I. I. Solvent Yellow 82, C.I. I. Solvent Orange 45, C.I. I.
Solvent Red 109, C.I. I. Solvent Red 8, C.I. I. Solvent Blue 38, C.I. I. Solvent Blue 70, C.I. I. Solvent Black 29, C.I.
I. Solvent Black 27, C.I. I. Solvent Black 34 and the like are C.I. I. Solvent Red 49 and the like are C.I. I. Solvent Blue 94 and the like are C.I. I. Solvent Blue 5 and the like can be mentioned. These oil-soluble dyes may be used alone or 2
A combination of more than one species may be used.

The dye dissolving agent used in the present invention includes:
Alcohol-based solvents, cellosolve-based solvents, ether-based solvents, ester-based solvents, ketone-based solvents and the like are used, and examples thereof include methanol, ethanol, isopropyl alcohol, lauryl alcohol, cetyl alcohol, stearyl alcohol, benzyl alcohol, n-heptanol, and methyl. Amyl alcohol, n-amyl alcohol,
Diacetone alcohol, propylene glycol, hexylene glycol, dipropylene glycol, methylphenyl carbitol, methyl cellosolve, ethyl cellosolve, isopropyl cellosolve, butyl cellosolve, diethylene glycol monomethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, triethylene glycol monomethyl ether, di Propylene glycol monomethyl ether, diethylene glycol monobutyl ether, ethylene glycol monophenyl ether, diethylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, propylene Recall monomethyl ether, propylene glycol monoethyl ether, ethyl acetate, butyl acetate, amyl acetate, ethyl acetoacetate, methyl ethyl ketone, 2-heptanone, and methyl isobutyl ketone. These dye dissolving agents can be used alone or in combination of two or more kinds.

However, when used as a black ink, it is preferable to use one of the above-mentioned dye dissolving agents having a boiling point of 100 to 250 ° C., in consideration of the volatility of the ink.

The oil-soluble resin optionally used in the present invention includes petroleum resin, alkyd resin, rosin-modified resin, alkylphenol novolac resin, ketone resin, acrylic resin, terpene resin, aromatic hydrocarbon resin and the like. .

The oil-soluble dye used in the present invention is preferably contained in an amount of 1 to 10% by weight based on the total amount of the ink in consideration of good fading and decoloring properties. Particularly, the range of 1 to 5% by weight is most preferable.

Although the resin and other additives may not be used, they can be appropriately used as long as the object of the present invention is not impaired.

When the characters, marks, lines, etc. recorded by the recording tool of the present invention are forcibly erased, an erasing tool using an erasing agent is used. Examples thereof include a spray, and a pen type such as a felt pen is particularly preferable.

The decoloring agent used in the present invention contains a chlorine-based oxidizing agent as a main component.

Examples of the chlorine-based oxidizing agent include sodium hypochlorite and sodium chlorite. Sodium hypochlorite is particularly preferable from the viewpoint of decoloring performance.

With the chlorine-based oxidizing agent used in the present invention, in order to easily and favorably erase the characters, marks, lines, etc. recorded by the recording tool, the effective chlorine content in the chlorine-based oxidizing agent aqueous solution is set. Is preferably in the range of 1 to 20% by weight, and particularly preferably in the range of 4 to 17%.

As the decoloring agent according to the present invention, additives such as a surfactant and a pH adjusting agent can be appropriately selected and used within a range not impairing the object of the present invention.

When the decoloring agent is applied on the characters, marks, lines, etc. recorded by the recording tool with the decoloring tool, for example, when the decoloring tool is a pen, the characters and marks recorded by the pen are applied. , On a line, or in the case of a spray, by spraying on the recorded characters, marks, lines, etc., the chlorine-based oxidizer, which is the main component of the decolorizer, With the available chlorine, the decomposition reaction of the oil-soluble dye is promoted, whereby characters, marks, lines, etc. are rapidly erased.

Therefore, almost no trace of erasure remains,
Therefore, erasing does not impair aesthetics. Also, since almost no trace of erasure remains, marking can be performed again using the recording tool of the present invention.

[0040]

The present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

Example 1 (Preparation of recording device) C.I. I. An ink was prepared by dissolving 2 parts by weight of Solvert Black 29 in 98 parts by weight of benzyl alcohol which is a dye dissolving agent.

A marker pen (valve type, pen tip: made of acrylic resin) was filled with this ink to prepare a recording tool.

Example 2 (Preparation of recording tool) The ink obtained in Example 1 was filled in an ink making device to prepare a recording tool.

Example 3 (Preparation of recording device) C.I. I. An ink was prepared by dissolving 3 parts by weight of Solvert Red 132 in 97 parts by weight of propylene glycol monomethyl ether acetate, which is a dye dissolving agent.

A marker pen (bulb type, pen tip: made of acrylic resin) was filled with this ink to prepare a recording tool.

Example 4 (Preparation of recording tool) The ink obtained in Example 3 was filled in an ink making device to prepare a recording tool.

Example 5 (Preparation of Decoloring Tool) An aqueous sodium hypochlorite solution having an effective chlorine amount of 12% by weight was prepared, and this was filled in a marker pen (valve type, nib: made of polyethylene) to decolorize it. The ingredients were made.

[Marking on concrete surface] Using each of the recording tools obtained in Examples 1 to 4, a concrete wall one week after the mold was removed was marked, and 5 minutes after the marking, the marking of Example 5 was performed. The marking surface was coated with the decoloring agent using a decoloring tool. After 60 seconds from application, all marking surfaces became colorless, and after evaporation of water, there was no trace of printing.

This reaction is due to the decomposition reaction of the oil-soluble dye due to available chlorine in the chlorine-based oxidizing agent which is the main component of the decoloring agent.

Comparative Example The same marking was made on the concrete wall one week after demolding with an alcohol-based oily marker (manufactured by Pilot Co., Ltd.). Five minutes after the marking, the decoloring agent was applied to the marking surface with the decoloring tool of Example 5. Almost no discoloration occurred even after several hours from application, and only partial discoloration was observed.

Further, the same test was carried out on black ink, red ink, poster color, etc., but almost no color was erased even after several hours after application, and only partial discoloration was observed.

[0052]

The marking recorded by the recording tool of the present invention can be easily decolored by applying a decoloring agent using the decoloring tool of the present invention.

Therefore, it can be advantageously used for recording markings applied to materials during construction, civil engineering, and the like.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location G01C 15/02 B43K 8/02 FC3 (72) Inventor Yasuko Kumano 4-6 Sendagaya, Shibuya-ku, Tokyo No. 15 In stock company Fujita

Claims (8)

[Claims] 1. A recording device comprising a colored ink containing a water-resistant oil-soluble dye as a main component, which is decolored by using a predetermined decoloring agent. 2. The oil-soluble dye is at least one selected from the group consisting of metal complex salt dyes, xanthene dyes, anthraquinone dyes and triarylmethane dyes.
The recording device according to claim 1, which is a kind of dye, and the dye is contained in the coloring ink in a ratio of 1 to 10% by weight. 3. The recording tool according to claim 1, wherein the recording tool is a pen including a tank part filled with the ink and a pen tip part impregnated with the ink in the tank part. 4. The recording tool according to claim 1, wherein the recording tool is a black ink dispenser including a tank portion filled with the ink and a black thread impregnated with the ink in the tank portion. 5. A decoloring tool using a decoloring agent for decoloring a marking recorded by the recording tool according to any one of claims 1 to 4, wherein chlorine-based oxidation is a main component of the decoloring agent. A decoloring tool containing at least one selected from agents. 6. The eraser according to claim 5, wherein the eraser is a pen including a tank portion filled with the eraser and a pen tip portion impregnated with the eraser in the tank. Color. 7. The decolorizing agent according to claim 5 or 6 is in the form of an aqueous solution containing the chlorine-based oxidizing agent, and the effective chlorine content in the aqueous solution is 1 to 20% by weight. Recording tool. 8. A recording device set comprising the recording device according to any one of claims 1 to 4 and the decoloring device according to any one of claims 5 to 7.