JP2002225488A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applicator which is free from such a trouble that an ink sticks to a container and ensures complete consumption of the total ink fill and also enables determining the residual level of the ink when a transparent or a translucent container is used. SOLUTION: This applicator is directly filled with the ink using a hydrocarbon solvent and a back-flow inhibitor using an organic solvent which is insoluble or hardly soluble in the hydrocarbon solvent and/or water, in such a state that the back-flow inhibitor is in contact with the ink interface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes an ink used for application in an ink tank connected to an application destination such as a tip, a fiber bundle, a spatula tip, a ballpoint pen tip, and a backflow preventer for the ink. It relates to an applicator. In particular, as the ink used for application, black or chromatic inks using hydrocarbon solvents, correction fluids mainly using white colorants that conceal previously recorded characters and images, etc. are used. About what you did.

[0002]

2. Description of the Related Art Conventionally, there has been known a ballpoint pen in which a backflow prevention member made of polybutene or a gelled product of polybutene is arranged in contact with a rear end interface of ink in a cylindrical ink tank.

[0003]

In order for the backflow preventive to exhibit its backflow preventing function, it is necessary that the backflow preventive be incompatible with the ink. In the case of an aqueous ink, the above-mentioned polybutene or a gelled product of polybutene is preferable. However, in the case of low-viscosity oil-based ink, there was a concern that the ink would flow backward.

In order to check the remaining amount of the ink, it is necessary to suppress the adhesion of the ink to the inner surface of the container. However, in general, the affinity between the organic solvent of the oil-based ink and the synthetic resin constituting the container is high. However, there was a tendency that the ink easily adhered to the inner surface of the container, and it was difficult to check the remaining amount.

[0005]

That is, the present invention provides an ink containing at least a colorant and a hydrocarbon solvent in an ink tank, and an organic solvent and / or water insoluble or hardly soluble in the hydrocarbon solvent. The present invention is directed to an applicator in which at least a backflow preventive body comprising at least a backflow preventive body and a viscosity modifier is directly filled so that the backflow preventive body is in contact with the interface of the ink.

The details will be described below. The application destination of the applicator is a tip-valve type in which a rod-shaped or spherical application member is urged forward by an elastic body such as a spring and pressed against the inner edge of the application liquid discharge port, a fiber bundle, or a brush ear. The used ones can be appropriately adopted. In particular, if the ink used is a solvent using a volatile solvent, it is preferable to adopt a structure that suppresses evaporation of the solvent from the application destination by using a valve or the like. In the case of a tip valve type, a resin such as polyacetal and polybutylene terephthalate, a metal such as stainless steel and brass, and the like can be used as a material of a coating member which is also a valve body.

The ink tank is preferably transparent or translucent so that the remaining amount of ink can be checked. Examples of the material include nylon, polyethylene terephthalate, polypropylene, polyethylene, and fluorine resin. Nylon, polyethylene terephthalate, and fluorine resin are preferable in consideration of solvent resistance. Further, from the viewpoint of the remaining amount confirmation, it is preferable that a fluororesin is disposed on at least the inner wall surface in contact with the ink. The fluororesin is used to make it possible to check the remaining amount of the ink. Specific examples of the fluororesin include polytetrafluoroethylene resin (hereinafter, PTFE), tetrafluoroethylene-6-fluoropropylene copolymer resin (hereinafter, FEP), and tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (Hereinafter, PFA), tetrafluoroethylene-ethylene copolymer resin (hereinafter, ETFE), polytrifluoroethylene chloride resin (hereinafter, CTFE), polyvinylidene fluoride (hereinafter, P)
VDF) and the like. In order to further suppress the adhesion of the ink to the inner wall of the ink tank, the inner wall surface of the storage tube has an arithmetic average roughness (Ra) of 500 nm or less and a maximum height difference (PV) of 5000 nm or less. (JIS
B0601) is preferable. Further, the shape of the ink tank is preferably a cylindrical body having a circular cross section like a general synthetic resin extruded pipe, but the inner diameter may be different depending on the part, or the cross section may be a polygon such as a square. For example, an injection molded product having a free shape may be used.

[0008] The ink is used for forming handwritings and designs and for concealing the formed handwritings and figures, and is at least composed of a coloring agent (concealing agent) and a hydrocarbon-based solvent.

As the coloring agent, pigments and dyes can be used, but the amount of the coloring agent is preferably adjusted to 3 to 65% by weight based on the total amount of the ink. As a specific example, TITONE SR
-1, 650, R62N, R3L, R7E (all manufactured by Sakai Chemical Industry Co., Ltd.), Kronos KR-310, KR-380, and 480 (all manufactured by Titanium Industry Co., Ltd.)
Manufactured), Thai Pure R-900, R-602, R-9
60, R-931 (from DuPont Japan Limited), TITANIX JR301, JR60
2. Titanium oxide such as JR800 (both manufactured by Teika Co., Ltd.), Special Black 6, and S17
0, S610, 5, 5, 4, 4A, 550, 3
5, 250, 100, Printex 150T,
U, V, 140U, 140V, 95, 9
0, 85, 80, 75, 55, 45, P,
XE2, L6, L, 300, 30, 30, 35, 25, 200, A, G (Degussa
Japan Co., Ltd.), # 2400B, # 2350, # 2
300, # 2200B, # 1000, # 950, # 90
0, # 850, # MCF88, MA600, MA10
0, MA7, MA11, # 50, # 52, # 45, # 4
4, # 40, # 33, # 32, # 30, CF9, # 20
B, # 4000B (Mitsubishi Chemical Industries, Ltd.), M
ONARCH 1300, 1100, 1000, 900, 880, 800, 700, MOGUL
L, REGAL 400R, 660R, 500R,
330R, 300R, 99R, ELFTEX
8, 12: BLACK PEARLS 2000 (all manufactured by Cabot Co. LTD, USA), Raven7
000, 5750, 5250, 5000, 35
00, 2000, 1500, 1255, 125
0, 1200, 1170, 1060, 104
0, 1035, 1020, 1000, 890
H, 890, 850, 790, 780, 76
0, 500, 450, 430, 420, 41
0, 22, 22, 16, 825 Oil BEA
ds, H20, C, Conductex 97
5, carbon black such as 900, SC (all manufactured by Colombian Carbon Japan Co., Ltd.), BS-605,
607 (above, manufactured by Toyo Aluminum Co., Ltd.), Bronze Powder P-555, P-777 (above, manufactured by Nakajima Metal Foil Industry Co., Ltd.), Bronze Powder 3L5, 3B7 (above, Fukuda Metal Foil Industry (above) Inorganic pigments such as black iron oxide, low order titanium oxide, yellow iron oxide, red iron oxide, ultramarine, navy blue, cobalt blue, chrome green, chromium oxide, etc., Hansa A-10G ,
5G, 3G, 4, GR, A, Benzidine Yellow, Permanent Yellow NCG, Tartrazine Lake,
Quinoline yellow, Sudanese 1, permanent orange,
Indus Ren Brilliant Orange GN, Permanent Brown FG, Para Brown, Permanent Red 4
R, Fire Red, Brilliant Carmine BS, Pyrazolone Red, Lake Red C, Quinacridone Red, Brilliant Carmine 6B, Bordeaux 5B, Thioindigo Red, Fast Violet B, Dioxane Violet, Alkaline Blue Lake, Phthalocyanine Blue, Indigo, Acid Green Lake, Organic pigments such as phthalocyanine green are exemplified. Also,
In addition, inorganic fluorescent pigments such as zinc sulfide, zinc silicate, zinc cadmium sulfate, calcium sulfide, strontium sulfide, and calcium tungstate can be used.

The hydrocarbon solvent is used for dissolving the resin, adjusting the drying time of the coating film, adjusting the viscosity, and the like. Normal hexane (boiling point: 68.7 ° C.), isopentane, normal heptane (boiling point: 98.4) ° C), an aliphatic hydrocarbon solvent such as normal octane, cyclopentane (boiling point 49.
Alicyclic hydrocarbon solvents such as methylcyclopentane (boiling point 71.8 ° C), cyclohexane (boiling point 80.0 ° C), methylcyclohexane (boiling point 100.9 ° C), and ethylcyclohexane (boiling point 132 ° C) Exol DSP 100/140 (Initial boiling point 102 ° C, Dry point 138
° C), D30 (initial boiling point 141 ° C, 172 ° C), D4
0 (initial boiling point 153 ° C, dry point 196 ° C), D80 (initial boiling point 204 ° C, dry point 230 ° C), D110 (initial boiling point 24)
3 ° C, end point 272 ° C), D130 (initial boiling point 277 ° C,
End point 310 ° C), Isopar C (Initial boiling point 97 ° C, Dry point 1)
E (initial boiling point 115 ° C, dry point 138 ° C), G (initial boiling point 156 ° C, dry point 175 ° C, H (initial boiling point 17
6 ° C, dry point 192 ° C), L (initial boiling point 188 ° C, dry point 2)
And a mixture of aliphatic hydrocarbon solvents such as M (initial boiling point: 208 ° C., dry point: 254 ° C.) (all manufactured by Exxon Chemical Co., Ltd.). These can be used alone or as a mixture, and the amount used is preferably 30 to 95% by weight based on the total amount of the ink.

In addition to the above-mentioned components, a film-forming agent which can be used in a hydrocarbon-based solvent for improving the fixability to a writing surface such as paper or glass can be used. For example, alkyd resins such as Teslac 2158-100 (manufactured by Hitachi Polymer Co., Ltd.) and phthalkid DX615 (50 wt% xylene solution, manufactured by Hitachi Chemical Co., Ltd.), and acryloid B6
6, Acrylic resin such as B67 (manufactured by Rohm and Haas, UK), Califrex TR-1107 (manufactured by Shell Chemical Co., Ltd.), Tufprene A, Asaprene T-431
Styrene elastomer such as (above, manufactured by Asahi Chemical Industry Co., Ltd.), Sumitate RB-11 (Sumitomo Chemical Co., Ltd.)
Evaflex 150 (Mitsui Polychemical Co., Ltd.)
Ethylene-vinyl acetate copolymer). In consideration of the fixing property and the coating property, the amount used is preferably 1 to 20% by weight based on the whole ink.

In addition to the above-mentioned components, Dispalon A670-20M is used for adjusting the viscosity, which comprises a fatty acid amide.
(Active ingredient 20%), 6900-20X (effectiveness 20
%) (Manufactured by Kusumoto Kasei Co., Ltd.), thickeners such as Aerosil R972, R974, and 200 (manufactured by Nippon Aerosil Co., Ltd.) made of fine-particle silica, and alkyl sulfate salts for dispersion stability of titanium oxide. Surfactants such as polyethylene glycol ethers, glycerin fatty acid esters, and polyoxyethylene fatty acid esters; quaternary ammonium salts; alkylamines A dispersant such as a salt can be added.

If titanium oxide having a high concealing property is used as a coloring agent and a volatile solvent having a boiling point of 40 to 150 ° C. is used as a solvent, it can be used as a correction liquid.

The ink is obtained by dispersing and mixing the above components using a stirring and dispersing machine such as a ball mill, an attritor, a sand grinder, and an impeller.

The backflow preventer prevents the backflow of the ink and also prevents the ink from adhering to the inner surface of the ink tank. The liquid serving as the base material of the composition is a solvent that is insoluble and / or hardly soluble in the ink, and uses a highly polar solvent. Specifically, in addition to water, highly polar polyhydric alcohols ethylene glycol, propylene glycol, glycerin, glycerin monoacetate, diethylene glycol, tetraethylene glycol, trimethylolethane, trimethylolpropane, 1,3-butanediol, 1,4-butanediol, 1,4-butenediol, polypropylene glycol, polyethylene glycol and the like can be used. These can be used alone or in combination.

Guar gum, hydroxypropylated guar gum, carboxymethylhydroxypropylated guar gum, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, xanthan gum, welan gum, ramzan gum, gellan gum, as a viscosity modifier, Water-soluble polysaccharides such as alginic acid, sodium alginate, ammonium alginate, potassium alginate, propylene glycol alginate, locust bean gum, tamarind gum, gum arabic, tragacanth gum, karaya gum, carrageenan, succinoglucan, polyacrylic acid, polyvinyl alcohol, polyethylene Synthesis of oxides, polyvinylpyrrolidone, N-vinylacetamide co-crosslinked products, etc. , The addition of such viscosity mineral of smectite. These can be used alone or in combination of two or more.

The backflow preventive may further include a surfactant to further prevent the ink from adhering to the ink tank, and may be a nonionic, anionic, cationic, or fluorine type. And the like can be used. Specific examples of nonionic surfactants include polyoxyethylene (5-15) glyceryl monostearate, polyoxyethylene glycerin fatty acid esters such as polyoxyethylene monooleate (5-15), hexaglyceryl monolaurate, Hexaglyceryl myristate, hexaglyceryl monostearate, monooleic acid, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monolinoleate,
Polyglycerin fatty acid esters such as decaglyceryl monoisostearate, decaglyceryl diisostearate, decaglyceryl trioleate, polyoxyethylene (20) sorbitan monococoate, polyoxyethylene (20) sorbitan monopalmitate, polyoxymonostearate Polyoxyethylene sorbitan fatty acid esters such as ethylene (20) sorbitan, polyoxyethylene (20) sorbitan monooleate, and polyoxyethylene (20) sorbitan monoisostearate;
Polyoxyethylene (6) sorbit monolaurate,
Polyoxyethylene tetrastearate (30-60)
Polyoxyethylene sorbite fatty acid esters such as sorbitol, polyoxyethylene (20-60) castor oil,
Polyoxyethylene (20-100) hydrogenated castor oil, such as polyoxyethylene castor oil and hydrogenated castor oil, polyoxyethylene (5-25) phytostanol, polyoxyethylene (30) polyoxyethylene sterol, hydrogen such as cholestanol, hydrogen Added sterol polyethylene glycol monolaurate, polyethylene glycol monostearate, polyethylene glycol monooleate,
Polyethylene glycol fatty acid esters such as polyethylene glycol distearate, polyoxyethylene (4.2-25) lauryl ether, polyoxyethylene (2-40) cetyl ether, polyoxyethylene (2-20) stearyl ether, polyoxyethylene ( 10-50) oleyl ether, polyoxyethylene alkyl ether such as polyoxyethylene (10-30) behenyl ether, polyoxyethylene (7.5-2
0) Nonyl phenyl ether, polyoxyethylene (1
0-30) polyoxyethylene alkyl phenyl ether such as octyl phenyl ether, polyoxyethylene (5-15) stearylamine, polyoxyethylene (5-15) oleylamine, polyoxyethylene (8) stearyl propylene diamine, polyoxyethylene (4-15) stearic acid amide, polyoxyethylene (5) polyoxyethylene alkylamine / fatty acid amide such as oleic acid amide, polyoxyethylene lanolin, polyoxyethylene (5-40) lanolin alcohol, N-propyl-N -(2-hydroxyethyl) perfluorooctane sulfonamide, polyoxyethylene higher fatty acid alcohol ether, acetylene glycol (Surfinol 465, 485, Shin-Etsu Chemical Co., Ltd.)
And polyoxyethylene (3-20) -N-propylperfluorooctanesulfonamide. Specific examples of anionic surfactants include sodium lauryl sulfate, potassium lauryl sulfate, triethanolamine lauryl sulfate, ammonium lauryl sulfate, sodium myristyl sulfate, sodium cetyl sulfate, and alkyl sulfates such as hydrogenated coconut oil fatty acid sodium glyceryl sulfate; Oxyethylene (2-4)
Polyoxyethylene alkyl ether sulfates such as sodium lauryl ether sulfate, polyoxyethylene (2-4) lauryl ether sulfate triethanolamine, polyoxyethylene (2) ammonium lauryl ether sulfate, sodium polyoxyethylene nonylphenyl ether sulfate, cocoyl sarcosine N-acyl amino acid salts such as sodium, sodium lauroyl sarcosine, potassium lauroyl sarcosine, sodium myristoyl sarcosine, sodium palmitoyl sarcosine, sodium lauroylmethylalanine, polyoxyethylene (3 to 6) sodium tridecyl ether acetate, polyoxyethylene (4. 5) Alkyl ether carboxylate, such as sodium lauryl ether acetate, and alky, such as sodium rallyl phosphate Berlin salts, polyoxyethylene (1) polyoxyethylene alkyl ether salts such as lauryl ether phosphoric acid salts, N- methyl cocoyl taurate, sodium, N- lauroyl methyl taurate, sodium,
N-acyltaurine salts such as sodium N-myristoylmethyltaurine, sodium N-palmitoylmethyltaurine, sodium N-stearoylmethyltaurine,
Dioctyl sodium sulfosuccinate, sodium lauryl sulfoacetate, sodium tetradecene sulfonate and other sulfonates, lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl aryl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, distearyl trimethyl ammonium chloride, alkyl, etc. Ammonium salts, alkylbenzene sulfonates such as sodium todecylbenzenesulfonate, perfluorooctanesulfonic acid, potassium perfluorooctanesulfonate, lithium perfluorooctanesulfonate, ammonium perfluorooctanesulfonate, potassium N-propyl-N-perfluorooctylsulfonylglycine salt , Bis [2- (N-
Propyl perfluorooctylsulfonylamino) ethyl] ammonium salt, perfluorocaprylic acid, fluorine surfactant such as ammonium perfluorooctanoate,
Examples thereof include sodium alkylnaphthalene sulfonate, sodium dialkylsulfosuccinate, sodium alkyldiphenylether disulfonate, and potassium alkylphosphate. Specific examples of the cationic surfactant include lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride,
Examples thereof include alkylammonium salts such as distearyldimethylammonium chloride, and fluorine-based surfactants such as N- [3- (perfluorooctanesulfonamido) propyl] -N, N, N, -trimethylammonium iodide. Specific examples of amphoteric surfactants include betaine-type amphoteric surfactants such as lauryl betaine, stearyl betaine, and coconut fatty acid aminopropyldimethylaminoacetic acid betaine, and N-coconut fatty acid acyl-N-carboxymethyl-N-hydroxyethylethylenediamine. Sodium, N-coconut fatty acid acyl-N-carboxymethyl-
And imidazoline type amphoteric surfactants such as N-hydroxyethylethylenediamine / sodium lauryl sulfate. In the above description, the numbers in parentheses indicate the number of moles of ethylene oxide added.

In order to prevent the occurrence of mold in the backflow preventer, an appropriate amount of an antiseptic / fungicide such as sodium dehydroacetate, 1,2-benzothiazolin-3-one, sodium benzoate and the like can be added.

Further, when a material that easily evaporates, such as water, is used, in order to suppress evaporation, a non-volatile and / or hardly volatile organic solvent insoluble and / or hardly soluble in the substrate,
Alternatively, molded products such as those having adjusted viscosity, synthetic rubber, elastomer, and plastic having rubber elasticity can be used as an anti-drying body at the interface of the anti-reflux body and used together. When the drying prevention body is a liquid composition, as the organic solvent, polybutene, α-olefin, ethylene-α-olefin, liquid paraffin, and the like can be used.
It can be used alone or in combination of two or more kinds. For viscosity adjustment, fine particles of silica such as Aerosil R972 and R974 (manufactured by Nippon Aerosil Co., Ltd.) and water such as Disparon 305 (manufactured by Kusumoto Kasei Co., Ltd.) A castor oil type, a cellulosic type such as Soroid (manufactured by Sansei Co., Ltd.), a metal soap, bentonite, etc. alone or
A mixture of more than one species can be used. In addition, a solid molded product and a liquid composition can be used in combination.

In order to ensure the anti-reflux function of the anti-reflux agent, and to enhance the anti-drying function and anti-reflux function of the anti-drying body of the liquid composition, the anti-reflux agent may be located inside the anti-reflux body. Floats can also be placed. The float may be arranged on each of the backflow preventive body and the drying preventive body made of the liquid composition, or on only one of them. Alternatively, a common float may be arranged on both sides. When a solid anti-drying member is used, the function of a float can be provided by arranging the tip portion inside the anti-reflux member. Examples of the shape of the float include a column shape, a ball shape, a board shape, a polygonal column shape, and a cup shape.

[0021]

Since the solvent used for the ink and the solvent used for the backflow preventive do not mix with each other, the ink is repelled at the interface of the backflow preventive. In addition, the backflow prevention body uses a highly polar solvent and is gelled by a viscosity modifier, and its gel structure has a high viscosity when it is allowed to stand still, and physically removes ink adhering to the ink tank inner wall. It can be said that the scraping effect is excellent.

Further, in the case where the fluororesin is disposed on the inner wall of the ink tank, the non-adhesiveness and the releasability are good.
Since the resistance of the ink moving in the ink tank decreases with use, the backflow prevention member can easily scrape the ink adhered to the ink tank. For these reasons, it is presumed that the ink is unlikely to adhere to the ink tank.

[0023]

EXAMPLES Ink 1 TITANIX JR805 (titanium oxide, manufactured by Teica Co., Ltd.) 40.0 parts by weight Methylcyclohexane 53.0 parts by weight Acryloid B67 (acrylic resin, manufactured by Rohm and Haas Company, USA) 5.0 parts by weight Aerosil 200 (silica, manufactured by Nippon Aerosil Co., Ltd.) 1.0 part by weight Homogenol L18 (polycarboxylic acid type polymer surfactant, manufactured by Kao Corporation) 1.0 part by weight Dispersion treatment of each of the above components in a ball mill for 24 hours. Then, a correction fluid was obtained.

Ink 2 TITANIX JR800 (titanium oxide, manufactured by Teica Co., Ltd.) 40.0 parts by weight Acryloid B67 (described above) 5.0 parts by weight Methylcyclohexane 49.5 parts by weight A670-20M (fatty acid amide paste, solvent: mineral) Tarpen and benzyl alcohol, active ingredient 20%, melting point 134 ° C., manufactured by Kusumoto Kasei Co., Ltd. 5.0 parts by weight Homogenol L18 (described above) 0.5 part by weight Each of the above components except for A670-20M is subjected to a ball mill 24.
After the time dispersion treatment, A670-20M was added, and the mixture was stirred with a dissolver to obtain a correction liquid.

Ink 3 TITONE R62N (titanium oxide, manufactured by Sakai Chemical Co., Ltd.) 55.0 parts by weight Acryloid B67 (described above) 9.0 parts by weight Methylcyclohexane 35.0 parts by weight Homogenol L18 (described above) 1.0 parts by weight The above components were dispersed in a ball mill for 24 hours to obtain a correction liquid.

Ink 4 Tilac D (lower order titanium oxide, manufactured by Ako Kasei Co., Ltd.) 10.0 parts by weight Acryloid B67 (described above) 5.0 parts by weight Ethylcyclohexane 79.0 parts by weight Homogenol L18 (described above) 0 parts by weight A670-20M (described above) 5.0 parts by weight Each of the above components except for A670-20M is subjected to a ball mill for 24 hours.
After R for time-dispersion treatment, A670-20M was added and stirred with a dissolver to obtain a black ink.

Ink 5 TAROX LL-XLO (yellow iron oxide, manufactured by Titanium Industry Co., Ltd.) 10.0 parts by weight Acryloid B67 (described above) 5.0 parts by weight Ethylcyclohexane 79.0 parts by weight Homogenol L18 (described above) 0 parts by weight A670-20M (described above) 5.0 parts by weight Each of the above components except for A670-20M is subjected to a ball mill for 24 hours.
After R for time dispersion treatment, A670-20M was added, and the mixture was stirred with a dissolver to obtain a yellow ink.

Backflow preventer 1 Water 96.3 parts by weight PEMULEN TR1 (acrylic acid / alkyl methacrylate copolymer, manufactured by BF Goodrich, USA) 2.5 parts by weight Surfynol 465 (acetylene glycol, Shin-Etsu Chemical Co., Ltd.) 1.0 part by weight Proxel GXL (fungicide, 1,2-benzothiazolin-3-one, active ingredient 20%, manufactured by ICI, UK) 0.2 part by weight The mixture was mixed and dissolved with a propeller type stirrer to obtain a backflow preventer.

Backflow prevention body 2 96.8 parts by weight of water Kerzan S (xanthan gum, manufactured by Sansei Corporation) 2.0 parts by weight Emulgen 709 (polyoxyethylene higher alcohol ether, manufactured by Kao Corporation) 1.0 part by weight Part Proxel GXL (described above) 0.2 part by weight The above components were mixed and dissolved with a propeller type stirrer to obtain a corrected liquid backflow preventer.

Backflow preventer 3 Water 96.8 parts by weight Kerzan T (xanthan gum, manufactured by Sanseki Co., Ltd.) 2.0 parts by weight Neoperex No. 6 (sodium dodecylbenzenesulfonate, manufactured by Kao Corporation) 1.0 part by weight Proxel GXL (described above) 0.2 part by weight The above components were mixed and dissolved with a propeller type stirrer to obtain a backflow preventer.

Backflow preventer 4 Water 48.0 parts by weight Glycerin 47.0 parts by weight Emulgen 709 (described above) 1.0 part by weight Smecton SA (synthetic smectite, manufactured by Kunimine Industry Co., Ltd.) 4.0 parts by weight Was mixed and dispersed by a propeller type stirrer to obtain a backflow preventive.

Backflow preventer 5 Kelzan T (described above) 2.0 parts by weight Water 70.0 parts by weight Glycerin 27.8 parts by weight Proxel GXL (described above) 0.2 parts by weight The above components were mixed with a propeller type stirrer. It melt | dissolved and the backflow prevention body was obtained.

Backflow preventer 6 Ethylene glycol 49.0 parts by weight Glycerin 49.0 parts by weight PNVA GX-205 (N-vinylacetamide co-crosslinked product, manufactured by Showa Denko KK) 2.0 parts by weight The mixture was mixed and dissolved with a propeller type stirrer to obtain a backflow preventer.

Anti-drying substance HC40 (ethylene-α olefin, manufactured by Mitsui Petrochemical Industries, Ltd.) 97.0 parts by weight Leopard KE (dextrin fatty acid ester, manufactured by Chiba Flour Milling Co., Ltd.) 3.0 parts by weight The mixture was stirred and dissolved at 120 ° C. to obtain a backflow preventive drying preventive body.

Examples and Comparative Examples As shown in the longitudinal sectional view of the main part in FIG. 1, a ball-point pen tip type coating section comprising a ball 1 (material: carbide) having a diameter of 1.0 mm and a stainless steel ball holder 2. 3 was attached to an ink tank 4 having an inner diameter of 3 mm, and each of the inks C and the backflow preventer G was filled to obtain an applicator. As shown in FIG. 2, an anti-drying body K was further used in Examples 1 to 8, and an ink tank shown in the following ink tank 1 was used in Example 10. In the comparative example, glycerin (without using a viscosity modifier) was used instead of the backflow preventive body without using the antidrying body. Table 1 shows the relationship between the materials of the respective inks, backflow preventers, and ink tanks.

Ink tank 1 Polyethylene glycol # 400 50.0 parts by weight Water 50.0 parts by weight A solution of the above composition was immersed in a nylon 12 cylinder having an inner diameter of 3 mm to obtain ink tank 1.

[0037]

Tests were conducted for the above Examples and Comparative Examples. Table 1 shows the results.

Attached Amount Test The applicator of each example and comparative example was used by hand until it was completely used up, and the ratio of the attached ink to the ink tank (adhered amount / filled amount) was measured.

Test for Confirming the Remaining Amount The applicator of each of the examples and comparative examples was checked by hand, and the confirmability of the remaining amount when 3/4 of the filling amount was used was visually confirmed. ：: The correction liquid does not adhere to the correction liquid storage tube at all, and the remaining amount can be easily confirmed. ：: Correction liquid slightly adhered to the correction liquid storage tube, but the remaining amount confirmation ability was slightly lowered. Δ: Correction liquid considerably adhered to the correction liquid storage tube, and the remaining amount confirmation performance was significantly reduced. ×: The correction fluid adhered to the correction fluid storage tube, and the remaining amount could not be confirmed.

[0040]

[Table 1]

As described in detail above, in the applicator according to the present invention, the amount of ink adhering to the ink tank is extremely small. When the ink tank is made transparent or translucent, the amount of ink remaining can be confirmed. Less good.

[Brief description of the drawings]

FIG. 1 is an enlarged longitudinal sectional view of a main part showing an example.

FIG. 2 is an enlarged vertical sectional view of a main part showing another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ball 2 Ball holder 3 Coating part 4 Ink tank C Ink G Backflow prevention body K Drying prevention body

Claims (3)

[Claims] An ink comprising at least a colorant and a hydrocarbon solvent in an ink tank, and a backflow prevention comprising at least an organic solvent and / or water insoluble or hardly soluble in said hydrocarbon solvent and a viscosity modifier. An applicator directly filled with a body so that the backflow prevention body is in contact with the interface of the ink. 2. The applicator according to claim 1, wherein said ink tank has a fluororesin disposed on at least an inner wall surface which comes into contact with ink. 3. The applicator according to claim 2, wherein the fluororesin is a tetrafluoroethylene-ethylene copolymer.