Writing implement

Abstract

Provided is a writing implement which is light-weight and has excellent operability, the writing implement having neither a high-pressure gas supply container used in conventional writing implements that enable drawing by spraying ink in a mist, nor attachments including, for example, a hand router and a battery for driving a motor thereof.　A writing implement (1) comprises: a container body (2) for storing ink; and an atomization nozzle (6) which is attached to a mouth part (2d) of the container body to spray the ink in the container body in a mist. The container body is a squeeze container which elastically deforms in response to pressing of a trunk part (2b) and applies pressure to the ink, and which can return to an original shape by the rigidity thereof when the pressing is released. The atomization nozzle (6) is provided with a dip tube (7) which is accommodated in the container body (2) and supplies the ink positioned at the bottom of the container body (2) to the atomization nozzle (6) in response to a squeeze operation on the container body (2).

Description

writing implements

[0001] The present invention relates to a writing implement that enables drawing by spraying ink into a mist and depositing the mist onto, for example, a paper surface.

[0002] Writing instruments have been proposed that spray ink into a mist and allow the mist to adhere to, for example, the surface of paper, thereby enabling drawing, and the present applicant has also made proposals such as those disclosed in Patent Documents 1 and 2. That is, Patent Document 1 discloses a writing instrument that combines a writing instrument that stores, for example, aqueous ink with a gas supply container that has a nozzle that can spray compressed gas such as air, and that sprays the ink into a mist and onto the surface of paper by projecting the compressed gas that sprays from the nozzle onto the writing part of the writing instrument.

[0003] 25 to 27 of Patent Document 2 disclose a writing implement that includes a container body that contains ink and has an opening that is equipped with an on-off valve and a metal mesh, and a sputtering unit that faces the metal mesh and has a brush that is rotated by a hand router. With this writing implement, ink that seeps out toward the metal mesh when the on-off valve is opened is sputtered by the rotating brush that is rotated by the hand router, and can be deposited on paper or the like.

[0004] JP 2019-189671 A International Publication No. WO2023 / 63367

[0005] The writing instrument disclosed in Patent Document 1 includes a gas supply container with a nozzle capable of ejecting compressed gas, which requires an accessory device, such as a high-pressure gas supply container in a metal can, to avoid the effects of gas pressure. This results in a large writing instrument, which suffers from the problem of poor operability. The writing instrument disclosed in Patent Document 2 also requires a hand crank and a battery to drive the motor, which, like the writing instrument disclosed in Patent Document 1, increases the overall weight of the writing instrument, resulting in poor usability during writing operations.

[0006] This invention seeks to solve the above-mentioned problems with writing instruments that spray ink in a mist and enable drawing with the mist of ink, and aims to provide a lightweight writing instrument that is easy to operate and does not require the use of accessories such as a conventional high-pressure gas supply container such as a metal can, or a handheld router and batteries for driving its motor.

[0007] The writing instrument of the present invention, which has been made to solve the above-mentioned problems, is, as described in claim 1, a writing instrument comprising a container body for storing ink, and an atomization nozzle that is attached to the mouth of the container body and sprays the ink in the container body in the form of a mist, wherein the container body is a squeeze container that elastically deforms when pressed by its body, applying pressure to the ink, and is able to restore to its original shape due to its own rigidity when the pressure is released, and the atomization nozzle is equipped with a dip tube that is housed within the container body and supplies the ink located at the bottom of the container body to the atomization nozzle by squeezing the container body.

[0008] Furthermore, as described in claim 2, the writing instrument of this invention is a writing instrument comprising a container body that stores ink, and an atomization nozzle that is attached to the mouth of the container body and sprays the ink in the container body in a mist, wherein the container body is a squeeze container that elastically deforms when pressed by its body, applying pressure to the ink, and that can restore to its original shape due to its own rigidity when the pressure is released, and a temporary reservoir that can store a portion of the ink in the container body is housed within the container body so as to surround the atomization nozzle from behind, and the atomization nozzle is equipped with a dip tube that is housed within the temporary reservoir and supplies the ink located at the bottom of the temporary reservoir to the atomization nozzle by squeezing the container body.

[0009] In this case, a preferred configuration is adopted in which the atomizing nozzle is attached to the mouth of the container body via a nozzle holder that seals the mouth of the container body, and the temporary storage body is attached to the nozzle holder by a locking claw that protrudes from the nozzle holder toward the inside of the container body.

[0010] According to the invention of claim 1, when the container body is held upright with the atomizing nozzle attached to the mouth of the container body facing up, the ink in the container body, which has been pressurized, can be sent to the atomizing nozzle via the dip tube by squeezing the barrel of the container body. This causes the atomized ink to be sprayed from the atomizing nozzle, allowing writing to be performed on a surface such as paper. Therefore, the writing instrument of claim 1 can provide a lightweight, easy-to-use writing instrument without the need for accessories such as a high-pressure gas supply container, a handheld pen and a battery for driving the motor, as shown in the prior art.

[0011] According to the invention of claim 2, a temporary reservoir capable of storing a portion of the ink in the container body is disposed within the container body, and by squeezing the barrel of the container body, ink in the temporary reservoir disposed adjacent to the atomizing nozzle is supplied to the atomizing nozzle via the dip tube. Therefore, the writing instrument according to claim 2 can contribute to shortening the length of the dip tube. This, in addition to the effect of claim 1, can reduce the likelihood of ink material solidifying and clogging the dip tube when using ink containing a material that easily solidifies, such as titanium oxide, as described below.

[0012] The overall configuration of the writing instrument according to the first embodiment, excluding the cap, is shown. (A) is a front view, (B) is a side view, and (C) is a central longitudinal sectional view. The ink mist ejection unit of the writing instrument shown in FIG. 1 is shown. (A) is a sectional view along the axial direction, and (B) is a side view. The component exploded view of the ink mist ejection unit shown in FIG. 2 is shown. (A) is a sectional view along the axial direction, and (B) is a perspective view with the nozzle holder facing forward. The single-piece configuration of the nozzle holder is shown. (A) is a perspective view with the front side facing forward, (B) is a perspective view with the back side facing forward, (C) is a front view, (D) is a left side view, (E) is a right side view, and (F) is a central longitudinal sectional view. The overall configuration of the writing instrument according to the second embodiment, excluding the cap, is shown. (A) is a front view, (B) is a side view, and (C) is a central longitudinal sectional view. It is a partial enlarged sectional view including the ink mist ejection unit shown in FIG. 5(C). The ink mist ejection unit of the second embodiment is shown. (A) is a top view, (B) is a front view, (C) is a left side view, and (D) is a right side view. The ink mist ejection unit of the second embodiment is shown. (A) is a perspective view with the top facing forward, (B) is a sectional view taken in the direction of the arrow from the a-a line in (A) of FIG. 7A, and (C) is a sectional view taken in the direction of the arrow from the b-b line in (A) of FIG. 7A. Similarly, the component exploded view of the ink mist ejection unit is shown. (A) is a perspective view, (B) is a front view, and (C) is a longitudinal sectional view. The single-piece configuration of the ink temporary storage body is shown. (A) is a perspective view with the front end side facing forward, (B) is a perspective view with the rear end side facing forward, (C) is a top view, (D) is a front view, (E) is a left side view, (F) is a right side view, (G) is a sectional view taken in the direction of the arrow from the c-c line in (C), and (H) is a sectional view taken in the direction of the arrow from the d-d line in (C).

[0013] A writing instrument according to the present invention will be described based on the embodiments shown in the drawings. Figures 1 to 4 show a writing instrument according to a first embodiment of the present invention, with Figure 1 showing the overall configuration of the writing instrument excluding the cap. First, the writing instrument according to the first embodiment of the present invention will be described based on Figure 1. Note that in the figures shown below, the same parts are designated by the same reference numerals, but in some figures, due to space limitations, reference numerals are assigned to representative parts, and details of each part will be described by referring to the reference numerals assigned to the figures showing the individual component configurations or exploded view of parts.

[0014] As shown in Fig. 1, the writing instrument 1 of the present invention includes a bottle-shaped container body 2 for containing writing ink (not shown). The container body 2 is configured as a flat plate with an elliptical bottom 2a so that it can be placed on a horizontal surface in a self-supporting manner. A body portion 2b is formed that is continuous with the bottom 2a and rises upward. The upright surface of the body portion 2b on the front side of the container body 2, i.e., the upright surface on the left side of the container body 2 shown in Fig. 1(C), forms an inclined body portion 2b1 whose diameter decreases toward the center of the container body 2 as it rises upward. The upright surface on the back side of the container body 2, i.e., the upright surface on the right side of the container body 2 shown in Fig. 1(C), forms an upright body portion 2b2 that is approximately perpendicular to the bottom 2a.

[0015] A neck 2c is formed at the top of the upright body 2b2, curving toward the front of the container body 2, and a cylindrical mouth 2d is integrally formed along the curved surface of the neck 2c, standing obliquely upward. As a result, the angle between the axis of the container body 2, which is perpendicular to the surface of the bottom 2a of the container body 2, and the axis of the mouth 2d, which passes through the center of the mouth, is an obtuse angle; in the illustrated example, the angle is set to approximately 120 degrees.

[0016] As explained above, the mouth 2d is configured to be located directly above the inclined body 2b1, which tapers in diameter toward the center of the container body 2 as it rises upward. This prevents the center of gravity of the ink mist ejection unit 4, which includes the nozzle holder 5 and atomization nozzle 6 (described later) attached to the mouth 2d, from shifting to the front side of the container body 2 where the mouth 2d is formed. In addition, the front and back sides of the container body 2 are formed with a plurality of finger hook recesses 2e on which the fingertips can be hooked when gripping the container body 2. These finger hook recesses 2e function as a non-slip surface when gripping the container body 2.

[0017] The container body 2 is molded from a flexible synthetic resin. This forms a squeeze container that can deform the container body 2 by pressing the left and right body portions 2b3 that form the sides of the container body 2 with a hand holding the container body 2. Therefore, pressure can be applied to the ink contained in the container body 2 by squeezing the container body 2. As is well known, the container body 2 that constitutes the squeeze container described above is designed to be able to restore its original shape due to its own rigidity when pressure is released. Writing ink (not shown) is contained within the container body 2, along with a stirring ball 9 made of a hard or glass ball.

[0018] 1(C), an ink mist ejection unit 4 including a nozzle holder 5 and an atomizing nozzle 6, which are attached in a state where they seal the mouth 2d, is attached to the mouth 2d of the container body 2. A male thread 2f is provided on the circumferential surface of the cylinder that constitutes the mouth 2d, and a cap member (not shown) that covers the nozzle holder 5, the atomizing nozzle 6, etc. is detachably attached using this male thread 2f, thereby constituting the writing instrument 1 of the first embodiment.

[0019] 2 and 3 show the ink mist ejection unit 4 that is attached to the mouth 2d of the container body 2. This ink mist ejection unit 4 is made up of a nozzle holder 5 that is attached in a state where the mouth 2d of the container body 2 is sealed, an atomizing nozzle 6 that is fitted into the center of this nozzle holder 5, and a dip tube 7 that is molded integrally with this atomizing nozzle 6 and housed inside the container body 2. All of the components that make up the ink mist ejection unit 4 can be made from a resin material.

[0020] 4 shows the individual configuration of the nozzle holder 5, which is one of the components that make up the ink mist ejection unit 4. This nozzle holder 5 has a cylindrical portion 5a that is fitted into the mouth 2d of the container body 2, an annular flange portion 5b that is protruded from the outer periphery of the cylindrical portion 5a and abuts against the front end of the mouth 2d, a disk-shaped lid portion 5c that is formed adjacent to the front side of the flange portion 5b and closes the mouth 2d, and a cylindrical protrusion 5d formed in the center of the lid portion 5c.

[0021] The through-hole formed in the cylindrical protruding portion 5d has a thicker inner diameter in the rear half thereof to form a fitting mounting hole 5e for the atomizing nozzle 6, and a thinner inner diameter in the front half thereof to form an ejection hole 5f for the ink mist (atomized ink) ejected from the atomizing nozzle 6. This nozzle holder 5 is also commonly used in the writing instrument of the second embodiment, which will be described later. For this purpose, a plurality of locking claws 5g are formed to protrude from the rear side of the lid portion 5c of the nozzle holder 5, i.e., on the inner surface of the nozzle holder 5 that faces the inside of the container body 2 when the nozzle holder 5 is attached to the opening 2d.

[0022] On the other hand, the atomizing nozzle 6 used in this embodiment is a single-fluid nozzle that can spray ink mist (atomized ink) using only the liquid pressure of the ink, and as described above, the dip tube 7 is integrally molded with this atomizing nozzle 6. As specified in JIS S3301, the dip tube is a component that moves the ink contained in the container body 2 to the nozzle holder 5 while simultaneously restricting the amount of ink sprayed. Therefore, to mount the ink mist discharge unit 4 inside the container body 2, the atomizing nozzle 6 is attached by fitting it into the nozzle fitting mounting hole 5e of the nozzle holder 5, as shown in Figure 3, for example.

[0023] Next, the non-nozzle end of the dip tube 7, which is integrally molded with the atomizing nozzle 6, is inserted through the opening 2d of the container body 2, and the cylindrical portion 5a of the nozzle holder 5 is fitted and attached within the opening 2d of the container body 2, thereby attaching the ink mist ejection unit 4 to the container body 2. At this time, because the dip tube 7 is bent into a "L" shape when viewed in cross section in the drawing, the non-nozzle end of the dip tube 7 can be positioned near the bottom 2a of the container body 2 as shown in Figure 1(C).

[0024] With the writing instrument of the first embodiment described above, when the container body 2 is held upright in a writing position with the atomizing nozzle 6 attached to the mouth 2d of the container body 2 facing up, a predetermined pressure can be applied to the ink stored in the container body 2 by squeezing, for example, the left and right barrel portions 2b3 (see FIG. 1(A)) of the container body 2. This causes the ink in the container body 2 to be supplied to the atomizing nozzle 6 via the dip tube 7, and the atomizing nozzle 6, which is a single-fluid nozzle, can spray an ink mist (atomized ink) in accordance with the fluid pressure applied to the ink. Therefore, by depositing this ink mist on, for example, the surface of paper, drawing becomes possible.

[0025] Figures 5 to 9 show a writing instrument according to a second embodiment of the present invention. In Figures 5 to 9, which show the writing instrument 1 of the second embodiment, parts that perform the same functions as parts of the writing instrument 1 of the first embodiment already described are designated by the same reference numerals, and therefore detailed descriptions thereof will be omitted where appropriate. In the writing instrument 1 of the second embodiment, as shown in Figures 5(C) and 6, a temporary reservoir 15 capable of storing a portion of the ink in the container body 2 is housed and disposed within the container body 2 so as to surround the atomization nozzle 16 from behind. Furthermore, within the temporary reservoir 15, a dip tube 17 is integrally molded with the atomization nozzle 16 and supplies ink located at the bottom of the temporary reservoir 15 to the atomization nozzle 16 by squeezing the container body 2.

[0026] 7A, 7B and 8, the writing instrument 1 of the second embodiment comprises the nozzle holder 5 attached to the container body 2 in a sealed state over the mouth 2d, the atomizing nozzle 16 attached by fitting into the nozzle fitting mounting hole 5e (see FIG. 4(F)) in the center of the nozzle holder 5, a temporary ink reservoir 15 attached to the nozzle holder 5 by a locking claw 5g formed to protrude from the nozzle holder 5 toward the inside of the container body 2, and a dip tube 17 integrally molded with the atomizing nozzle 16 and housed in the temporary reservoir 15, forming an ink mist discharge unit 14. All of the components constituting the ink mist discharge unit 14 of the second embodiment can also be formed from a resin material.

[0027] 9 shows the individual configuration of the temporary ink reservoir 15, which is one of the components that make up the ink mist ejection unit 14. The temporary ink reservoir 15 has a closed tail end and an open front end, and the open front end is attached to the nozzle holder 5 by the locking claw 5g that protrudes from the nozzle holder 5 toward the inside of the container body 2, as described above, and the temporary ink reservoir 15 is placed inside the mouth 2d of the container body 2.

[0028] The temporary reservoir 15 has a flat surface 15a along the axial direction formed on part of its cylindrical circumferential surface, and is attached to the nozzle holder 5 with the flat surface 15a facing upward. Two slit-shaped ink introduction openings 15b are formed in the flat surface 15a and are parallel to each other along the axial direction. The front end opening of the temporary reservoir 15 has a plurality of (six in the illustrated example) notched grooves 15c cut from the edge of the opening and formed at approximately equal intervals along the circumference, and a locking protrusion 15d (see FIGS. 9(G) and (H)) with an arc-shaped cross section protruding along the inside of the opening.

[0029] As a result, the locking protrusions 15d formed on the temporary reservoir 15 are engaged with the multiple locking claws 5g formed on the nozzle holder 5 so as to cover them from the outside, thereby attaching the temporary reservoir 15 to the nozzle holder 5. At this time, the multiple cut grooves 15c formed in the front end opening of the temporary reservoir 15 act to give the locking protrusions 15d appropriate flexibility, allowing elastic deformation.

[0030] The atomizing nozzle 16 used in the writing instrument of the second embodiment, like the writing instrument of the first embodiment, is a single-fluid nozzle that can spray ink mist (atomized ink) using only the liquid pressure of the ink, and as described above, the dip tube 17 is integrally formed with this atomizing nozzle 16. Therefore, to mount the ink mist discharge unit 14 inside the container body 2, the atomizing nozzle 16 is attached by fitting it into the nozzle fitting mounting hole 5e of the nozzle holder 5 shown in Figure 4.

[0031] Next, the non-nozzle end of the dip tube 17, which is integrally molded with the atomizing nozzle 16, is inserted into the front end opening of the temporary reservoir 15, and the locking protrusion 15d formed on the front end opening of the temporary reservoir 15 is engaged with the locking claw 5g of the nozzle holder 5, thereby attaching the temporary reservoir 15 to the nozzle holder 5. In this state, the temporary reservoir 15 is inserted from the mouth 2d of the container body 2, and the cylindrical portion 5a of the nozzle holder 5 is fitted and attached within the mouth 2d of the container body 2, thereby attaching the ink mist ejection unit 14 to the container body 2.

[0032] At this time, the sealing portion on the tail end side of the temporary storage body 15 is attached to the container body 2 so that it faces slightly downward, as shown in Figures 5 and 6, and the dip tube 17 integrally molded with the atomizing nozzle 16 is bent in a "L" shape, so that the non-nozzle end of the dip tube 17 can be positioned near the bottom of the temporary storage body 15.

[0033] In the writing instrument 1 of the second embodiment described above, by pointing the mouth portion 2d of the container body 2 downward, the ink in the container body 2 can be introduced into the temporary reservoir 15 through the ink introduction opening 15b formed in the temporary reservoir 15. At this time, it is preferable that the temporary reservoir 15 has an ink storage capacity of 1 ml to 10 ml. Next, with the container body 2 in an upright writing position with the atomizing nozzle 6 attached to the mouth portion 2d of the container body 2 facing up, a predetermined pressure can be applied to the ink stored in the temporary reservoir 15 by squeezing, for example, the left and right barrel portions 2b3 of the container body 2 (see FIG. 5(A)).

[0034] As a result, the ink in the temporary reservoir 15 is supplied to the atomizing nozzle 16 via the dip tube 17, and the atomizing nozzle 16, which is configured as a single-fluid nozzle, can spray an ink mist (atomized ink) in accordance with the liquid pressure applied to the ink. Therefore, by adhering this ink mist to the surface of paper, for example, it becomes possible to draw something.

[0035] The following ink compositions are preferably used for the writing instruments 1 of the first and second embodiments.

[0036] (Ink Composition) This ink composition is primarily made of water and contains a hiding pigment. The ink composition has a shear thinning index of 0.4 to 0.8 at a shear rate of 9.6 to 76.6 / s. The shear thinning index is a value that indicates a measure of the change in apparent viscosity in response to a change in shear rate, and means n that satisfies the following relational expression. This shear thinning index can be measured using, for example, a rheometer or a cone-plate rotational viscometer: τ=ηDn (In the formula, τ indicates shear stress, D indicates shear rate, and η indicates apparent viscosity.)

[0037] The viscosity of the ink composition at a shear rate of 38.3 / s is preferably 5 to 50 mPa·s from the viewpoint of satisfying the above-mentioned shear thinning index. This viscosity can be adjusted mainly by a thickener. The viscosity can be measured using the above-mentioned cone-plate type rotational viscometer (1°34'R24 cone).

[0038] The ink composition preferably has a dynamic surface tension of 25 to 55 mN / m at 25°C and 100 ms, from the viewpoint of making the mist generated when the ink is sprayed from an atomizing nozzle denser and, as a result, further reducing the occurrence of unevenness. This dynamic surface tension can be adjusted by a surfactant, a water-soluble organic solvent, etc.

[0039] The ink composition may have a static surface tension of 20 to 50 mN / m at 25° C. This static surface tension can be adjusted by using a surfactant, a water-soluble organic solvent, or the like.

[0040] The dynamic surface tension and static surface tension can be measured using, for example, a surface tensiometer.

[0041] The ink composition preferably contains a surfactant, from the viewpoint of effectively reducing the dynamic surface tension and static surface tension of the ink composition. When the ink composition contains a surfactant, the surfactant content is preferably 0.05 to 5.0 mass %, from the viewpoint of achieving a balance between the hiding power and a good shear thinning index of the ink.

[0042] (Ink Composition: Water) The water can be ion-exchanged water, distilled water, or the like.

[0043] (Ink Composition: Hiding Pigment) Examples of the hiding pigment that can be used include titanium oxide, zinc oxide, and aluminum.

[0044] The average particle diameter of the hiding pigment is not particularly limited as long as the hiding properties of the ink can be ensured, but is preferably 150 nm to 15 μm. The average particle diameter here is selected appropriately depending on the size of the target hiding pigment, and for particles less than approximately 1 μm, it is the histogram average particle diameter (D50) value from the scattering intensity distribution measured by a dynamic scattering method, and for particles 1 μm or larger, it is the D50 value calculated on a volume basis by a laser diffraction method.

[0045] In particular, when the hiding pigment is titanium oxide, the average particle size can be 150 nm to 1 μm, and when the hiding pigment is aluminum, the average particle size can be 1 to 15 μm.

[0046] (Ink composition: colorant) As the colorant, various colorants that can be used in conventional inks can be used, such as dyes, pigments, or mixtures of dyes and pigments. These colorants can be used alone or in combination.

[0047] As the dye, any of direct dyes, acid dyes, basic dyes, mordant / acid mordant dyes, alcohol-soluble dyes, azoic dyes, sulfide / sulfide vat dyes, vat dyes, disperse dyes, oil-soluble dyes, food dyes, metal complex dyes, salt-forming dyes, dyes obtained by dyeing a resin, and the like, which are used in ordinary dye ink compositions, and aqueous solutions of these dyes can be used.

[0048] Examples of pigments that can be used include inorganic pigments such as carbon black and graphite, organic pigments such as talc, silica, alumina, mica and alumina silicate, azo pigments, condensed azo pigments, phthalocyanine pigments, anthraquinone pigments, quinacridone pigments, isoindolinone pigments, diketopyrrolopyrrole pigments and various lake pigments, fluorescent pigments, pearl pigments, and the like.

[0049] (Ink Composition: Water-Soluble Organic Solvent) As the water-soluble organic solvent, glycols such as glycerin, propylene glycol, and ethylene glycol, glycol ethers such as ethylene glycol monomethyl ether and propylene glycol monomethyl ether, and the like can be preferably used.

[0050] (Ink Composition: Thickener) As the thickener, for example, natural polymers such as polysaccharides, or synthetic polymers can be used.

[0051] Examples of polysaccharides that can be used include gum arabic, tragacanth gum, guar gum, locust bean gum, alginic acid, carrageenan, gelatin, xanthan gum, welan gum, succinoglycan, diutan gum, dextran, methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, starch glycolic acid, and salts thereof.

[0052] Examples of synthetic polymers that can be used include polyvinylpyrrolidone, polyvinyl methyl ether, polyacrylic acid and its salts, polyethylene oxide, vinyl acetate-polyvinylpyrrolidone copolymer, styrene-acrylic acid copolymer and its salts, and isobutylene-maleic anhydride copolymer and its salts.

[0053] (Ink composition: surfactant) Any surfactant can be used as the surfactant, but from the viewpoint of more effectively reducing the dynamic surface tension of the ink composition, it is preferable to use at least one surfactant selected from the group consisting of fluorine-based surfactants, acetylene glycol-based surfactants, and silicone-based surfactants. Commercially available surfactants can be used as these surfactants.

[0054] (Ink Composition: Other Components) The ink composition may contain various additives, such as preservatives, adhesives, pH adjusters, and non-drying agents.

[0055] The writing instrument according to the present invention described above can eliminate the need for accessories such as a high-pressure gas supply container used in conventional writing instruments that spray ink in a mist to enable drawing, a handheld router, and a battery for driving the motor, etc. Therefore, a writing instrument that is lightweight and has excellent operability can be provided, and the effects described in the "Effects of the Invention" section above can be achieved.

[0056] REFERENCE SIGNS LIST 1 Writing implement 2 Container body 2a Bottom 2b Body 2c Neck 2d Mouth 4 Ink mist ejection unit 5 Nozzle holder 5a Cylindrical body 5b Flange 5e Nozzle fitting mounting hole 5f Ink mist ejection hole 5g Locking claw 6 Atomization nozzle (single-fluid nozzle) 7 Dip tube 14 Ink mist ejection unit 15 Temporary reservoir 15a Flat surface 15b Ink introduction opening 16 Atomization nozzle (single-fluid nozzle) 17 Dip tube

Claims

1. A writing instrument comprising a container body for storing ink, and an atomization nozzle attached to the mouth of the container body to spray the ink in the container body in the form of a mist, wherein the container body is a squeeze container that elastically deforms when pressed by its body, applying pressure to the ink, and can restore its original shape due to its own rigidity when the pressure is released, and the atomization nozzle is equipped with a dip tube housed within the container body that supplies the ink located at the bottom of the container body to the atomization nozzle by squeezing the container body.

2. A writing instrument comprising a container body for storing ink, and an atomization nozzle attached to the mouth of the container body to spray the ink in the container body in the form of a mist, wherein the container body is a squeeze container that elastically deforms when pressed by its body, applying pressure to the ink, and that can restore to its original shape due to its own rigidity when the pressure is released, wherein a temporary reservoir capable of storing a portion of the ink in the container body is housed within the container body so as to surround the atomization nozzle from behind, and wherein the atomization nozzle is equipped with a dip tube that is housed within the temporary reservoir and supplies the ink located at the bottom of the temporary reservoir to the atomization nozzle by squeezing the container body.

3. A writing instrument as described in claim 2, characterized in that the atomizing nozzle is attached to the mouth of the container body via a nozzle holder that seals the mouth of the container body, and the temporary storage body is attached to the nozzle holder by a locking claw that protrudes from the nozzle holder toward the inside of the container body.

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