JP3558287B2 - Writing implement - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is a writing instrument using ink, in which an ink liquid and a colorant contained in the ink are stored separately, and the colorant is supplied to the ink liquid while the ink liquid is guided to the writing tip. The present invention relates to a writing implement which can be written with an ink exhibiting a predetermined color at a writing tip by being added to a liquid for use.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various writing tools have been proposed in which a writing tool itself holds ink, and the ink held by the writing tool itself is guided to a writing tip for writing.
Specific examples of such a writing instrument include a fountain pen, a ball-point pen, a felt-tip pen, and a felt-tip pen (marker pen).
[0003]
The ink used in such a writing instrument is obtained by dissolving or dispersing a dye or a pigment as a colorant in a vehicle (solvent or medium) as a liquid for the ink in advance almost uniformly.
[0004]
[Problems to be solved by the invention]
By the way, the conventional writing implement as described above is convenient in that the color of the ink transferred to the writing surface can be determined by looking at the color of the ink held therein. However, in recent years, it has been desired to provide a new writing implement that is completely different from a conventional writing implement.
[0005]
Therefore, the ink liquid contained in the ink and the main component of the colorant are stored separately and formed so that the colorant is added to the ink liquid while the ink liquid is guided to the writing tip. By doing so, for example, by making the ink liquid colorless and transparent, or by making the ink liquid a very light color similar to the color of the ink liquid, the writing tip can be written with ink having a predetermined color, but An object of the present invention is to provide a writing instrument completely different from a conventional writing instrument.
[0006]
However, even if the ink liquid and the main component of the colorant are separated and stored, the colorant may diffuse into the ink liquid over time. However, there is a problem that the difference between the writing instrument and the writing instrument that holds the ink disappears.
[0007]
[Means for Solving the Problems]
The present invention has the following configurations in order to solve the above problems.
In the writing instrument according to the first aspect of the invention, the ink liquid and a main body of a colorant for coloring the ink liquid are stored separately, and the ink liquid is guided to the writing tip. In a writing instrument formed such that a colorant is added to the ink liquid, the ink liquid is guided to the colorant storage section between the ink liquid storage section and the colorant storage section. A colorant-adsorbing core for capturing the colorant when the agent is diffused in the direction of the ink liquid; and the colorant-adsorbing core is formed of a porous rod-shaped body mainly composed of activated carbon. A regulating portion for appropriately restricting the contact surface between the front end of the colorant addition core and the rear end of the colorant addition core is provided, and the colorant storage section is formed by a colorant addition core impregnated with a colorant, and the colored ink is I will be guided to the writing tip through the ink guide wick It is configured.
[0008]
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Hereinafter, embodiments of the writing instrument according to the present invention will be described with reference to the illustrated examples.
1 to 3 show a writing instrument according to a first embodiment of the present invention.
As shown in the drawing, the writing instrument of the first embodiment includes a cylindrical barrel 1, and a liquid storage unit 1 a for storing the ink liquid 16 is provided inside the rear side of the barrel 1. Further, a collector 5 for preventing the ink liquid from leaking from the writing tip due to the pressure change of the liquid storage section 1a is fixed inside the front side.
[0009]
Further, the barrel 1 is made of a synthetic resin such as polypropylene (PP) as a material and is entirely formed to be colorless and transparent, so that the inside of the barrel 1 can be visually recognized from the outside.
The shaft cylinder 1 is not limited to a cylindrical shape, and may have a polygonal outer periphery, for example.
[0010]
In addition, the barrel 1 is not limited to the case where the material is made of polypropylene (PP). For example, polyvinyl chloride (PVC), polyvinyl butyral (PVB), polyvinyl alcohol (PVA), polyvinylidene chloride (PVDC), Vinyl acetate such as polyvinyl acetate (PVAC), polyvinyl formal (PVF) and polyvinyl dichloride; polystyrene (PS); styrene-acrylonitrile copolymer (AS); polystyrene such as ABS; ethylene-vinyl acetate copolymer (EVA) such as polyethylene, polymethyl methacrylate (PMMA), acrylic such as modified acrylic, trifluorinated ethylene chloride (PCTFE), tetrafluoroethylene (PTFE), tetrafluoroethylene / 6-propylene propylene (FEP) ), Vinylidene fluoride (PVDF), etc. Fluororesin, polyacetal (PA), polycarbonate (PC), phenoxy, polyester (PETP), polyurethane (PU), phenol / formaldehyde resin (PF), urea resin (UF), melanin / formaldehyde resin (MF), epoxy resin ( EP), furan resin (FF), xylene resin (XF), silicone resin, nylon, or the like may be used as a material.
[0011]
Further, the barrel 1 is not limited to being formed colorless and transparent, and may be formed, for example, colored transparent or translucent.
Further, the barrel 1 is not limited to the case where the whole is formed to be transparent. For example, a transparent window may be provided in a part of the barrel to make the inside thereof visible.
Further, the barrel 1 may be formed entirely transparent, and a transparent or opaque elastic grip may be provided on the outer periphery of a position to be a grip portion.
[0012]
Further, characters, figures, patterns, and the like may be provided on the surface of the barrel 1.
That is, it is desirable that the barrel 1 is formed so that the inside thereof can be visually recognized.
The collector 5 is made of a synthetic resin such as ABS, for example, and is formed entirely colorless and transparent.
[0013]
As shown in FIGS. 1 to 3, a liquid guiding groove 7 formed from the rear end of the liquid storage portion 1 a toward the writing tip portion on the outer periphery of the colletor 5, and a writing tip portion on the writing tip portion side. There are provided an air replacement groove 8 formed from the front end toward the liquid storage portion 1a side, and a number of liquid retaining grooves 6 formed so as to intersect both the liquid guide groove 7 and the air replacement groove 8. Thus, the pressure change in the liquid storage section 1a is adjusted.
[0014]
In addition, the collector 5 is not limited to the case where the collector 5 is formed to be colorless and transparent. For example, the collector 5 may be formed to be colored transparent, translucent or opaque. That is, the inside of the collector 5 may be visible, or the inside may not be visible.
At the center of the collector 5, there is provided a hole 5a penetrating from the rear end to the front end on the writing tip side. This hole 5a is not limited to the case where it is formed in a cylindrical shape, and for example, its inner peripheral surface may be formed in a polygonal shape. Further, for example, a large number of grooves may be provided on the inner peripheral surface of the hole 5a from the rear end of the liquid storage unit 1a to the front end of the writing tip.
[0015]
In addition, a regulating portion 9 having a hole whose diameter is appropriately reduced is provided substantially at the center of the hole 5a in the axial direction, and a colorant adsorption core 14 is inserted behind the regulating portion 9 of the hole 5a. A collector core 15 is fixed to the rear end of the hole 5a of the collector with the colorant adsorption core 14 fixed. Note that the collector core 15 serves to fix the colorant adsorption core 14 and guide the ink liquid 16 to the colorant adsorption core 14, and the colorant not adsorbed by the colorant adsorption core 14 contains the colorant. This is a further safety device that prevents the liquid 16 for ink from entering the liquid retaining groove 6 of the collector 5.
[0016]
A coloring agent addition core 13 for guiding the ink liquid 16 from the liquid storage portion 1a to the writing tip portion via the coloring agent adsorption core 14 is inserted in front of the regulating portion 9 of the hole 5a. Have been.
Further, by impregnating the colorant additive core 13 with the colorant, the colorant is stored separately from the ink liquid 16. Furthermore, the colorant is added to the ink liquid 16 while the ink liquid 16 is guided to the writing tip side.
[0017]
The colorant-added core 13 is formed in a cylindrical rod shape by a fiber bundle.
The fiber bundle serving as the colorant-added core 13 is provided with an appropriate porosity for guiding the ink liquid 16.
Further, the colorant-added core 13 is not limited to the case where it is formed of a fiber bundle, and may be formed of, for example, a porous body.
[0018]
Further, the coloring agent-added core 13 may be formed of a synthetic resin such as polyacetal, polypropylene or polyester. In this case, on the outer peripheral surface of the core, a number of capillary grooves, slits, or concave portions that are continuous from one end to the other end are provided, or inside the core, from one end to the other end. Numerous capillary grooves, capillary holes, and concave portions are provided.
[0019]
On the other hand, if the writing implement is left without writing for a long time, the colorant diffuses into the ink liquid, and there is a risk that the difference between the writing implement and the conventional writing implement will disappear.
Therefore, the colorant-adsorbing core 14 is formed by forming a powdery or fibrous material having activated carbon as a main material into a porous, cylindrical rod-shaped body for the purpose of capturing and adsorbing the colorant during diffusion. In addition, it is disposed between the ink liquid 16 and the colorant-added core 13, and is provided so that the front end of the colorant-adsorbed core 14 and the rear end of the colorant-added core 13 are substantially in contact with each other. The liquid 16 can be guided from the liquid storage portion 1a to the colorant-added core 13 and absorbs the diffused colorant to prevent the colorant from moving to the liquid storage portion 1a. Makes it possible to maintain a completely different state for a long time. For example, when the ink liquid 16 is colorless and transparent or the ink liquid 16 is slightly colored, it is possible to maintain the extremely light color state for a long time.
[0020]
Further, as described above, the regulating portion 9 in a state where the diameter of the hole 5a is appropriately reduced is provided substantially at the center of the hole 5a of the collector in the axial direction. The restricting portion 9 is formed integrally with the inner wall of the hole 5a and has a tapered surface on the front surface, and the rear end of the coloring agent addition core 13 is also formed with a tapered surface so as to be in close contact with the tapered surface. The tapered rear end of the colorant additive core 13 is in contact with the front end of the colorant adsorption core 14.
[0021]
By providing the contact portion between the colorant-added core 13 and the colorant-adsorbing core 14 in this manner, the colorant-adsorbing core 14 guides the ink liquid 16 from the liquid storage portion 1a to the colorant-added core 13 in an appropriate amount. This makes it possible to prevent the colorant from moving toward the liquid storage section 1a, thereby further preventing the colorant from moving toward the liquid storage section 1a. The shape of the restricting portion 9 is not limited to the shape of the embodiment, and the shape can be selected according to the design convenience.
[0022]
This can be applied to a direct liquid type pen, marker pen, or ball-point pen which does not have a collector described later. In this case, a regulating portion is provided so as to appropriately restrict the contact surface between the front end of the coloring agent adsorption core and the rear end of the coloring agent addition core.
In the front part of the writing instrument, a joint 3 having a tip 2 fixed to the front end is fixed to the front end of the barrel 1, and a ballpoint pen tip 10 as a writing tip is fixed to the front end of the tip 2. A shaft portion extending rearward of the mouth portion 2 is fixed to an inner hole of the shaft portion formed at the front end of the colletor 5. In addition, an air hole 4 for connecting to outside air is formed at a joint between the mouth portion 2 and the joint 3, and an air passage communicating from the air hole 4 to an air replacement groove 8 provided in the collector 5 is formed.
[0023]
The ball-point pen tip 10 rotatably holds the tip ball at its front end, and the front end of the ink guide core 12 is inserted inside the ball-point tip 10, thereby passing through the colorant-added core 13. The drawn ink is guided to the writing tip.
Note that the writing tip is not limited to the case formed by the ballpoint pen tip 10. For example, the writing tip may be formed by a pen tip of a fountain pen, or may be formed by a writing tip made of felt. It may be formed by a writing tip made of a bundle, or may be formed by a thin tubular writing tip used for a needle pen.
[0024]
The above-described ink liquid 16 corresponds to a vehicle of a conventional ink, and mainly includes a portion obtained by removing a dye or a pigment from the conventional ink. For example, the colorless transparent or translucent ink liquid 16 can be adjusted by using a conventional ink vehicle as it is.
Also, for example, the colorless transparent or translucent ink liquid 16 can be adjusted by adding a predetermined component to a conventional ink vehicle or by removing a predetermined component from the conventional ink vehicle.
[0025]
Further, for example, by dissolving or dispersing a very small amount of a dye or pigment in a conventional ink vehicle, the colored transparent or colored translucent ink liquid 16 can be adjusted. Thereby, for example, it is possible to adjust the ink liquid 16 which is similar to the colorant and has a very light color. Further, for example, it is also possible to adjust the ink liquid 16 having a color different from the colorant and a very light color.
[0026]
Specifically, the ink liquid 16 is appropriately mixed with, for example, water, a water-soluble organic solvent, a lubricant, a preservative, a rust inhibitor, a pH adjuster, an anti-drying agent, a thickener, or an emulsion. Can be adjusted. Further, only a small amount of the dye or pigment may be dissolved or dispersed therein.
The ink liquid 16 is filled in a liquid storage portion 1 a provided on the rear side inside the barrel 1.
[0027]
The coloring agent corresponds to a dye or a pigment of a conventional ink, and mainly includes a portion obtained by removing a vehicle from the conventional ink.
For example, a solid or high-concentration liquid colorant can be adjusted by using the dye or pigment of a conventional ink as it is.
Also, for example, by dissolving or dispersing an extremely large amount of a dye or pigment in a vehicle of a conventional ink, a high-concentration liquid colorant can be adjusted.
[0028]
Also, for example, by dissolving or dispersing an extremely large amount of a dye or pigment in a predetermined component in a vehicle of a conventional ink, a high-concentration liquid colorant can be adjusted.
When the colorant is adjusted to a liquid state, the colorant is impregnated into the colorant-added core 13 and then dried to be stored separately from the ink liquid 16.
[0029]
The storage of the coloring agent inside the writing instrument is not limited to the case where the coloring agent-added core 13 is impregnated. For example, a hole provided at the center of the collector 5 may be filled with a solid or liquid colorant. Further, for example, a coloring agent adjusted to a liquid state may be applied to the inner peripheral surface of the hole to be solidified. Further, for example, a colorant adjusted to a liquid state may be applied to the outer peripheral surface of the liquid guiding core to assimilate the coloring agent. Further, for example, a colorant adjusted to a solid state may be embedded in the liquid guide core. Further, a colorant adjusted to a liquid state may be held in a place other than the liquid storage section 1a, and the colorant may be gradually added to the ink liquid 16 according to the flow of the ink liquid 16.
[0030]
As described above, the writing implement according to the present embodiment separates and stores the ink liquid 16 and the colorant, and at the same time the ink liquid 16 is guided to the writing tip, the colorant is turned into the ink liquid 16. Thus, the writing tip can be written with an ink having a predetermined color at the writing tip, but the appearance is much different from that of a conventional writing instrument.
[0031]
In the present embodiment, the writing implement provided with the collector 5 is shown. However, the present invention is not limited to the writing implement provided with the collector. For example, a direct liquid type felt-tip pen and a marker pen without the collector are provided. Or a ballpoint pen.
4 and 5 show a writing instrument according to a second embodiment of the present invention.
[0032]
As shown in the drawing, the writing implement of the second embodiment includes a cylindrical barrel 24, and inside the barrel 24, a front end of the writing liquid of the ink liquid due to a change in the pressure of the liquid storage unit is provided. A collector 25 for preventing leakage is fixed.
Further, a bush 29 is fixed in close contact with the inner wall of the hole at substantially the center of the hole of the collector 25 in the axial direction, and the front end of the colorant adsorption core 28 is provided at the rear end of the bush 29 so as to substantially abut. A small-diameter portion 27a formed at the rear end of the colorant-added core 27 is fitted into a pore portion provided at the axis of the bush 29, and functions as a regulating portion. It is provided in contact with the front end of the colorant adsorption core 28. The bush 29 is formed of an elastic material such as rubber, but is not particularly limited.
[0033]
In the second embodiment, the same performance as the first embodiment can be expected.
[0034]
[Action]
As described above, the ink liquid 16 contained in the ink and the colorant are stored separately, and the ink liquid 16 contains the colorant while the ink liquid 16 reaches the writing tip. The solid colorant is added little by little while dissolving by passing through the colorant additive core 13, or the ink liquid 16 is removed from the colorant additive core 13 containing the liquid colorant. By passing, the liquid colorant is added while being mixed little by little, for example, to make the ink liquid 16 colorless and transparent, or to make the color of the ink liquid 16 a very light color similar to the colorant. Sometimes, the writing tip can be written with ink having a predetermined color, but a writing instrument that is completely different from a conventional writing instrument can be provided.
[0035]
If the writing implement is left without writing for a long time, the colorant will diffuse into the ink liquid 16. Therefore, by disposing the colorant-adsorbing core 14 between the ink liquid 16 and the colorant-added core 13 impregnated with the colorant for the purpose of adsorbing the colorant during diffusion, the dye diffusion time is delayed. This makes it possible to maintain a state in which the feel of the writing instrument is completely different from that of the conventional writing instrument for a long time.
[0036]
【The invention's effect】
The configuration and operation of the writing instrument of the present invention are as described above, and between the ink liquid storage section and the colorant storage section, the ink liquid is guided to the colorant storage section, but the colorant is directed in the ink liquid direction. By providing a colorant adsorption core that captures the colorant when diffused, it has been confirmed that the appearance and clarity of the ink liquid are maintained for a long period of time, which makes the feeling completely different from the conventional writing implement ink It is possible to provide a writing instrument that keeps its appearance for a long time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating an entire writing instrument according to a first embodiment of the present invention.
FIG. 2 is an enlarged sectional view of a main part of the first embodiment.
FIG. 3 is a sectional view taken along line AA of FIG. 1;
FIG. 4 is a cross-sectional view showing the entire writing implement of Embodiment 2 of the present invention.
FIG. 5 is an enlarged sectional view showing a main part of a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaft barrel 1a Liquid storage part 2 Mouth part 3 Joint 4 Air hole 5 Collector 5a Hole 6 Liquid retaining groove 7 Liquid guide groove 8 Air replacement groove 9 Regulator 10 Ballpoint pen tip 11 Tip ball 12 Ink guide core 13 Colorant additive core Reference Signs List 14 Colorant adsorption core 15 Collector core 16 Ink liquid 17 Cap 18 Tail plug 19 Shaft cylinder 20 Collector 21 Ink induction core 22 Colorant addition core 23 Colorant adsorption core 24 Shaft cylinder 25 Collector 26 Ink induction core 27 Colorant addition Core 27a Small diameter portion 28 Colorant adsorption core 29 Bush

Claims (1)

The ink liquid and the main body of the colorant for coloring the ink liquid are stored separately, and the colorant is added to the ink liquid while the ink liquid is guided to the writing tip. In the writing instrument formed in
A colorant adsorption wick is provided between the ink liquid storage portion and the colorant storage portion, which guides the ink liquid to the colorant storage portion, but captures the colorant when the colorant diffuses in the ink liquid direction. ,
The colorant-adsorbing core is formed of a porous rod-shaped body mainly composed of activated carbon, and is provided with a regulating portion for appropriately restricting a contact surface between a front end of the colorant-adsorbing core and a rear end of the colorant-adding core. ,
The writing implement is characterized in that the colorant storage section is formed by a colorant-added core impregnated with a colorant, and is configured such that the colored ink is guided to a writing tip through an ink guide core.

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