Applicator

Abstract

To provide an applicator that can use an application liquid without waste.SOLUTION: An applicator 1 has a shaft cylinder 2 and application body parts 3 and 4, and makes the application body part 3 contact with an application object to apply an application liquid. At least one of the application body parts 3 and 4 is formed, including a first application body part 16 and a second application body part 17 arranged in parallel. The applicator has a first application liquid occlusion body 6 occluding an application liquid to be applied by the first application body part 16, and a second application occlusion body 7 occluding an application liquid to be applied by the second application body part 17. The first application liquid occlusion body 6 and the second application liquid occlusion body 7 are difference in length and / or thickness.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an applicator for supplying a built-in coating liquid to an application body such as a pen tip.

Background Art

[0002] An applicator having a pen tip chip made of felt, synthetic resin, etc., like a so-called marking pen, is widely known. As such an applicator, there is an applicator capable of drawing a double line with one stroke of the pen.

[0003] For example, Patent Document 1 discloses a marking pen having two separately formed pen tip portions. This marking pen has a pen tip portion for drawing a wide line (hereinafter referred to as a wide pen tip portion) and a pen tip portion for drawing a narrow line (hereinafter referred to as a narrow pen tip portion). And the two pen tip portions are arranged side by side so that the tip positions of these two pen tip portions are flush.

[0004] In this marking pen, a gap is formed between the tip portion of the wide pen tip portion and the tip portion of the narrow pen tip portion (see FIG. 1 of Patent Document 1, etc.). Therefore, when a drawing line is drawn on paper or the like, the drawn drawing line becomes two lines extending in parallel with a gap therebetween.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the above-described conventional marking pen, when used continuously for a long period of time, there was a case where, although a drawing line was formed by the narrow pen tip portion, a drawing line was not formed by the wide pen tip portion. After diligent investigation by the inventors, it was discovered that only the ink supplied to the wide pen tip was depleted. In other words, in the marking pen described above, the ink reservoir that stores the ink supplied to the narrow pen tip and the ink reservoir that stores the ink supplied to the wide pen tip are made of the same material, and their shape and size are the same. Therefore, the two ink reservoirs have the same amount of ink storage capacity. On the other hand, when forming a double line, the amount of ink applied to the paper by the wide pen tip is greater than the amount of ink applied to the paper by the narrow pen tip at the same time. As a result, the ink supplied to the wide pen tip is depleted first. In other words, the conventional marking pens described above had room for improvement in terms of making the ink more efficient to use.

[0007] Therefore, the object of the present invention is to provide an applicator that allows for the efficient use of the coating liquid. [Means for solving the problem]

[0008] One aspect of the present invention for solving the above problems is an applicator having a shaft and an applicator portion, which applies an applicator liquid by bringing the applicator portion into contact with an object to be coated, wherein at least one of the applicator portions is formed to include a first applicator portion and a second applicator portion arranged side by side, and has a first applicator liquid absorbent body that absorbs the applicator liquid applied by the first applicator portion, and a second applicator liquid absorbent body that absorbs the applicator liquid applied by the second applicator portion, The first coating portion is wider than the second coating portion. The first coating liquid absorbent and the second coating liquid absorbent differ in length and / or thickness. Furthermore, the first coating liquid storage body is capable of storing more coating liquid than the second coating liquid storage body, and the second coating liquid storage body is housed in a state in which it is deformed into a shape in which a part of it is bent and stretched. This is a coating device characterized by the following features.

[0009] In this configuration, the amount of coating solution absorbed (held) in the first coating solution absorber and the second coating solution absorber can be set to different and appropriate amounts, thus enabling the use of the coating solution without waste.

[0010] In the above-described configuration, it is preferable that at least one of the first coating liquid storage body and the second coating liquid storage body is housed in the shaft in a deformed state.

[0011] In this configuration, the entire applicator can be made thin without reducing the amount of ink held.

[0012] In the manner described above, the second coating liquid storage body is contained in a state in which it is deformed into a shape in which a part of it is bent and stretched.

[0013] In this configuration, it becomes possible to position each of the two ends of the second coating liquid absorbent in the longitudinal direction at appropriate locations.

[0014] The above-described preferred configuration is more preferably one in which the first coating liquid absorbent is housed in a state where it is pressed against the shaft by the second coating liquid absorbent.

[0015] This more preferable configuration prevents unintended displacement of the first coating liquid absorbent.

[0016] Other inventions The situation is, An applicator having a shaft and an applicator portion, for applying an applicator liquid by bringing the applicator portion into contact with an object to be coated, wherein at least one of the applicator portions is formed including a first applicator portion and a second applicator portion arranged side by side, and has a first applicator liquid absorbent body that absorbs the applicator liquid applied by the first applicator portion, and a second applicator liquid absorbent body that absorbs the applicator liquid applied by the second applicator portion, the first applicator portion is wider than the second applicator portion, the first applicator liquid absorbent body and the second applicator liquid absorbent body differ in length and / or thickness, and the first applicator liquid absorbent body is capable of absorbing more applicator liquid than the second applicator liquid absorbent body, The shaft has a core member, a portion of the second coating liquid absorbent is disposed inside the core member, at least a portion of the second coating liquid absorbent extends toward the center of the shaft as it approaches one end in the longitudinal direction of the shaft, and the portion of the second coating liquid absorbent disposed inside the core member is located toward the center of the shaft. This is a coating device characterized by the following:

[0017] In this configuration, even if the second coating liquid reservoir is housed in the barrel in a deformed state, a portion of the second coating liquid reservoir can be kept from shifting away from the center of the barrel. In other words, a portion of the second coating liquid reservoir can be positioned more reliably in the specified location.

[0018] The above aspect is to make the first coating body part and the second coating body part in a plurality of contact states in contact with the object to be coated, and while maintaining the plurality of contact states, slide and move in the coating direction which is one direction in the horizontal direction, so that a multi-line is formed. When forming the multi-line, the first coating body part applies more coating liquid than the second coating body part. It is preferable that the first coating liquid storage body is shorter and thicker than the second coating liquid storage body.

[0019] According to such an aspect, it becomes possible to store more coating liquid in the first coating liquid storage body without making the length of the first coating liquid storage body longer than necessary. Another aspect of the present invention is an applicator having a shaft and an applicator portion, for applying an applicator liquid by bringing the applicator portion into contact with an object to be coated, wherein at least one of the applicator portions is formed including a first applicator portion and a second applicator portion arranged side by side, and has a first applicator liquid absorbent body that absorbs the applicator liquid applied by the first applicator portion, and a second applicator liquid absorbent body that absorbs the applicator liquid applied by the second applicator portion, wherein the first applicator portion is wider than the second applicator portion, the first applicator liquid absorbent body and the second applicator liquid absorbent body differ in length and / or thickness, the first applicator liquid absorbent body is capable of absorbing more applicator liquid than the second applicator liquid absorbent body, and the first applicator liquid absorbent body is shorter and thicker than the second applicator liquid absorbent body. A further aspect of the present invention is an applicator having a shaft and an applicator portion, for applying an applicator liquid by bringing the applicator portion into contact with an object to be coated, wherein at least one of the applicator portions is formed to include a first applicator portion and a second applicator portion arranged side by side, and has a first applicator liquid absorbent body that absorbs the applicator liquid applied by the first applicator portion, and a second applicator liquid absorbent body that absorbs the applicator liquid applied by the second applicator portion, wherein the first applicator portion is wider than the second applicator portion, the first applicator liquid absorbent body and the second applicator liquid absorbent body differ in length and / or thickness, the first applicator liquid absorbent body is capable of absorbing more applicator liquid than the second applicator liquid absorbent body, and when the first applicator portion side is the front side, the rear portion of the first applicator liquid absorbent body is deformed such that the portion on the side facing the second applicator liquid absorbent body is recessed.

Effect of the Invention

[0020] According to the present invention, it is possible to provide an applicator that can use the coating liquid without waste.

Brief Description of the Drawings

[0021] [Figure 1] It is a perspective view showing an applicator according to an embodiment of the present invention. [Figure 2] It is a cross-sectional view showing the applicator of FIG. 1. [Figure 3] It is a perspective view showing the first pen tip member of FIG. 2. [Figure 4] It is a perspective view of the first pen tip member of FIG. 3 viewed from different directions. [Figure 5] It is a side view showing the first pen tip member of FIG. 3, and (a) to (c) show views from different directions. [Figure 6] It is a view showing the first pen tip member of FIG. 3. (a) is a front view seen from the front side, and (b) is a rear view seen from the rear side. [Figure 7] It is a view showing the second pen tip member of FIG. 2. (a) is a perspective view, and (b) is a side view. [Figure 8] It is a cross-sectional view showing an enlarged periphery of the first pen tip of FIG. 2. [Figure 9] Figure 2 shows the tip plug member, where (a) is a perspective view from the front and (b) is a perspective view from the rear. [Figure 10] Figure 9 is a cross-sectional view showing the tip plug member. [Figure 11] (a) is a cross-sectional perspective view of the tip plug member of Figure 9 viewed from the rear, and (b) is a cross-sectional perspective view of the tip plug member of Figure 9 viewed from the front. [Figure 12] (a) is a front view of the tip plug member in Figure 9, viewed from the front, and (b) is a rear view of the tip plug member in Figure 9, viewed from the rear. [Figure 13] (a) is a cross-sectional view showing the area around the second pen tip portion of Figure 2, and (b) is an exploded perspective view showing the pen tip member and pen tip retaining member of (a). [Figure 14] Figure 2 shows the core component, with (a) being a perspective view and (b) being a cross-sectional view. [Figure 15] Figure 2 is an explanatory diagram showing how to assemble the applicator, illustrating how to house the first ink absorber and the second ink absorber inside the tip stopper member, attach the core member to the second ink absorber, and engage the tip stopper member with the main body cylinder, in the order of (a) to (c). [Figure 16] Figure 2 shows the tip plug member and a cross-sectional view of the first and second ink absorbers. [Figure 17] Figure 2 is a front view of the applicator, seen from the front. [Figure 18] Figure 2 is a perspective view showing the area around the first pen tip of the applicator. [Figure 19] Figure 2 is a side view showing the area around the first pen tip of the applicator. [Figure 20] This is a cross-sectional view showing an enlarged portion of Figure 2. [Figure 21] Figure 2 is a schematic rear view showing the applicator as viewed from the rear. [Figure 22] Figure 1 is an explanatory diagram showing the first pen tip of the applicator brought close to the object to be coated. [Figure 23](a) is a schematic diagram illustrating how the applicator shown in Figure 1 draws a double line on an object to be coated, and (b) is a schematic diagram illustrating the double line drawn by the applicator shown in Figure 1. [Figure 24] Figure 1 is an explanatory diagram showing the area around the first pen tip when drawing a double line on an object using the applicator. [Figure 25] This is an explanatory diagram illustrating a case in which different multi-line drawings are made using a first pen tip member and a second pen tip member that are different from those of the above-described embodiment. The left figure schematically shows the multi-line drawings to be made, and the right figure schematically shows the first pen tip member and the second pen tip member that draw the multi-line drawings in the left figure. (a) and (b) each show a different embodiment. [Figure 26] This diagram illustrates the case in which different first and second pen tip members are used to draw multiple lines different from those in the embodiments described above. The left diagram schematically shows the multiple lines to be drawn, and the right diagram schematically shows the first and second pen tip members used to draw the multiple lines in the left diagram. (a) to (c) each show a different embodiment. [Figure 27] This diagram illustrates the case in which different first and second pen tip members are used to draw multiple lines different from those in the embodiments described above. The left diagram schematically shows the multiple lines to be drawn, and the right diagram schematically shows the first and second pen tip members used to draw the multiple lines in the left diagram. (a) and (b) each show a different embodiment. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described below. Note that the applicators described herein include writing instruments such as felt-tip pens, highlighters, and whiteboard markers, as well as tools for applying liquid substances such as ink to any object, such as a paper surface or a whiteboard.

[0023] As shown in Figure 1, the applicator 1 of this embodiment has a main body cylinder 2 (shaft cylinder), a first pen tip portion 3 (applicator portion, one-sided applicator portion), and a second pen tip portion 4 (applicator portion, other-sided applicator portion). In other words, this applicator 1 has pen tip portions (applicator portions, the first pen tip portion 3 and the second pen tip portion 4) at each end of the main body cylinder 2 in the longitudinal direction, and the applicator 1 is usable on both sides of the main body cylinder 2. That is, the coating liquid can be applied using either of the pen tip portions provided on both sides in the longitudinal direction. In the following explanation, unless otherwise specified, the relationship between "front" and "back" will be described with the first pen tip section 3 being the front and the second pen tip section 4 being the rear.

[0024] One end (front end) in the longitudinal direction of the main cylinder 2 is an open end, and a stopper member 5 is attached thereto. Furthermore, as shown in Figure 2, the applicator 1 contains two ink absorbers, consisting of a first ink absorber 6 (which is an absorbent material for coating liquid, and is the first absorbent material for coating liquid) and a second ink absorber 7 (which is an absorbent material for coating liquid, and is the second absorbent material for coating liquid). In addition, a core member 8 is arranged inside the applicator 1.

[0025] As shown in Figure 2, the main body cylinder 2 is a hollow member with a roughly cylindrical shape, and forms the shaft of the pen shaft (main body shaft). An internal space (storage space) is formed along its entire length. The length of the main body cylinder 2 is the length of the applicator 1, and also the front-to-back direction.

[0026] The main body cylinder 2 has a narrow diameter section 10 at the other end in the longitudinal direction, that is, the end opposite to the end to which the tip plug member 5 is attached. Specifically, starting from the other end in the longitudinal direction (the end on the second pen tip section 4 side, which is the rear end), it has a narrow diameter section 10, an intermediate section 11, and an enlarged diameter section 12, which are continuous. The intermediate section 11 is thicker (has a longer radial length) than the narrow section 10, and the widened section 12 is thicker than the intermediate section 11. A stepped portion is formed between the outer circumferential surface of the narrow section 10 and the outer circumferential surface of the intermediate section 11, and a stepped portion is formed between the outer circumferential surface of the intermediate section 11 and the outer circumferential surface of the widened section 12.

[0027] Within the internal space of the main cylinder 2, the portions located inside the narrow diameter section 10, the intermediate section 11, and the widened diameter section 12 also gradually narrow (become thinner) as they move toward the other end in the longitudinal direction. At this time, a stepped portion is formed at the boundary between the inner circumferential surface located inside the intermediate section 11 and the inner circumferential surface located inside the narrow diameter section 10. In other words, stepped portions are formed at the boundary between the sections with different degrees of narrowness.

[0028] The first pen tip section 3 is composed of multiple pen tip members (coating bodies), each consisting of a first pen tip member 16 (first coating body section, coating body) and a second pen tip member 17 (second coating body section, coating body). Therefore, the first pen tip section 3 can draw two parallel lines (details will be described later).

[0029] The first pen tip component 16 is a sintered core (porous body) formed by heating a powder such as plastic powder, and is a porous body having continuous pores. In other words, it is a component that can draw in ink (coating liquid) by capillary action and move it toward the pen tip side (front side).

[0030] As shown in Figures 3 and 5(a), the first pen tip member 16 of this embodiment has a pen tip forming portion 20 (tip side portion) that forms the pen tip and a base end portion 21 (base end portion) located behind it. The pen tip forming portion 20 is elastically deformable and is more easily deformed than the base end portion 21, which is the rear portion. Specifically, when the sintering powder used as the raw material for the pen tip forming portion 20 is designated as the first sintering powder, and the sintering powder used as the raw material for the base end portion 21 is designated as the second sintering powder, the first sintering powder has a smaller particle size than the second sintering powder. Here, "smaller particle size" means that the average particle size of particles randomly selected in equal numbers (a predetermined number N) from each is small. Furthermore, the density of the sintering powder used as raw material differs between the pen tip forming section 20 and the base end section 21. Here, "density" refers to the state of density of particles; for example, if the particles are densely packed, it is dense, and if the particles are sparsely distributed, it is sparse. Comparing the pen tip forming section 20 and the base end section 21, the pen tip forming section 20 is denser than the base end section 21, and the maximum distance between the centers of the particles is smaller. Based on the above, the first pen tip member 16 of this embodiment has a pen tip forming portion 20 that is more easily deformed than the base end portion 21, resulting in a softer writing feel.

[0031] In this embodiment, the first sintering powder is a mixture of several types (2-3 types) of powders made from the same material but with different particle sizes. The second sintering powder is also a mixture of several types of powders made from the same material but separated by particle size. Here, the first sintering powder and the second sintering powder may be powders of the same material. For example, the first sintering powder may be a mixture of powder α1 and powder α2, where both powder α1 and powder α2 are powders of material α but with different particle sizes. In this case, the second sintering powder may also be a mixture of powder α1 and powder α2. By making the ratio of powder α1 to powder α2 in the first sintering powder different from the ratio of powder α1 to powder α2 in the second sintering powder, the overall powders can be different. In other words, the sintering powder may be one type of powder or a mixture of two or more types of powders. When two or more types of powders are mixed, each powder may be made of the same material but with different particle sizes. Also, the number of powders that make up the first sintering powder and the second sintering powder may be the same or different. For example, as described above, each may be composed of two types of powder (powder α1, powder α2), or one may be composed of one type of powder and the other of three types of powder.

[0032] Furthermore, focusing on the overall shape of the first pen tip member 16, as shown in Figure 3, the portion of the first pen tip member 16 located on the pen tip side (front side) is thicker than the portion located on the base end side (rear side). In other words, the first pen tip member 16 is divided into a pen tip-side thick shaft portion 23 and a rear-side thin shaft portion 24, as shown in Figures 3 and 5(a). The pen tip-side thick shaft portion 23 is formed by including the pen tip forming portion 20 and a part of the base end portion 21, while the rear-side thin shaft portion 24 is made up of the base end portion 21.

[0033] As shown in Figure 3, the thicker shaft portion 23 on the pen tip side has a tip surface portion 30 (tip surface portion), four side portions (side portions) consisting of a first side portion 31, a second side portion 32, a third side portion 33, and a fourth side portion 34, and a rear end surface portion 35.

[0034] The tip surface portion 30 is the part that forms an inclined surface at the tip. That is, as shown in Figure 5(a), the end on the second side portion 32 side is located further forward than the end on the first side portion 31 side, giving it a shape as if the tip portion of the thick shaft portion 23 on the pen tip side had been cut off at an angle. In other words, it forms an inclined surface that is inclined with respect to the longitudinal direction (axial direction) of the main body cylinder 2. Furthermore, as shown in Figure 6(a), in a plan view from the front, the length in the coating direction X (left-right direction in Figure 6) is longer than the length in the direction perpendicular to the coating direction X (up-down direction in Figure 6). The direction perpendicular to the coating direction X here is also the direction of separation between the first side portion 31 and the second side portion 32. This coating direction X is one of the horizontal directions, and is the direction in which the applicator 1 is moved when drawing the desired line (a multi-line, and in this embodiment, a double line) (see Figure 23(a), etc.).

[0035] As shown in Figure 3, a recessed groove, or receiving groove, is formed in the first side surface 31, which is one of the side surfaces. The accommodating groove 38 is a groove that recesses inward toward the inside of the thick shaft portion 23 on the pen tip side, and its cross-sectional shape is arc-shaped (approximately semi-circular), with the groove wall portion and groove bottom portion forming a curved surface. It also extends over almost the entire area from near the front end to near the rear end of the first side portion 31.

[0036] The second side portion 32 is a side portion located on the opposite side of the first side portion 31. As shown in Figure 6(a), in a plan view from the pen tip side, it forms a curved surface that is convex outwards. As shown in Figures 3 and 5(a), the front end portion of the second side portion 32 is located in front of the front end portion of the first side portion 31.

[0037] The third side portion 33 and the fourth side portion 34 are side portions that are opposite to each other in the coating direction X, as shown in Figure 6(a). That is, they are both located between the first side portion 31 and the second side portion 32.

[0038] As shown in Figure 3, the third side portion 33 and the fourth side portion 34 have a lateral inclined portion 40 (inclined surface portion) on their front side. The lateral inclined portion 40 has a shape as if a part of the side portion has been cut off at an angle, and forms an inclined surface that slopes outward (outward in the coating direction X) as it moves towards the rear.

[0039] Furthermore, in this embodiment, the thick shaft portion 23 on the pen tip side has a first curved portion 43 (curved portion) formed between the tip surface portion 30 and the third side portion 33, and between the tip surface portion 30 and the fourth side portion 34. More specifically, the first curved portion 43 is located between the tip surface portion 30 and the lateral inclined portions 40 provided on the third side portion 33 and the fourth side portion 34, respectively.

[0040] The first curved surface portion 43 is a curved surface (R surface) and forms rounded corners. The first pen tip member 16 is a pen tip that extends in the front-to-back direction, as shown in Figure 3, and has mirror symmetry with respect to a virtual plane (not shown) that divides the first pen tip member 16 in the coating direction X (see Figure 6(a), etc.).

[0041] Here, as shown in Figure 5, the thicker shaft portion 23 on the pen tip side is a straight section that extends from the rear portion, that is, from the portion further back than the front end to the rear end. This portion is a straight section that extends while maintaining the same or substantially the same cross-sectional area and shape.

[0042] As shown in Figures 4 and 6(b), the rear slender shaft portion 24 is formed at a position away from the inside of any part of the peripheral edge of the rear end surface portion 35. That is, it is formed at a position away from the inside of the four side portions (first side portion 31, second side portion 32, third side portion 33, fourth side portion 34) and the housing groove portion 38. More specifically, the distance L1 from the first side portion 31 to the rear thin shaft portion 24 is longer than the distance from the other side portions to the rear thin shaft portion 24. Furthermore, the rear thin shaft portion 24 is formed at a position away from the housing groove portion 38. That is, the housing groove portion 38 is formed such that the portion closest to the rear thin shaft portion 24 (the groove bottom and deepest part) is separated from the rear thin shaft portion 24 by a predetermined distance L2.

[0043] Furthermore, the rear thin shaft portion 24 is a rod-shaped body extending rearward from the rear end surface portion 35, as shown in Figures 3 and 4. This rear thin shaft portion 24 is formed to become thinner towards the rear end. That is, the area of ​​the cross-section decreases towards the rear end, and the area of ​​the rear end surface is smaller than the area of ​​the cross-section of each part. In this embodiment, the rear end surface of the rear thin shaft portion 24 is a circle with a diameter of 2.0 mm, but this diameter may be 2.0 mm or more. However, from the viewpoint of stabilizing the ink supplied from the ink absorber, it is preferable to make the rear portion of the rear thin shaft portion 24 thinner. That is, by making the rear portion thinner, it can be made easier to insert into the ink absorber (cotton). Furthermore, even if the insertion length (length of the inserted portion) is sufficiently long, the cotton is less likely to be compressed, which is preferable.

[0044] The second pen tip member 17 is a rod-shaped pen tip, as shown in Figure 7, etc. Specifically, the pen tip portion 53, the large diameter portion 54, and the small diameter portion 55 are arranged in parallel from the front end (pen tip side), and these are formed as a single unit. The pen tip portion 53 is the part in which the outer shape of the front side (tip side) is roughly hemispherical, and the outer shape of the rear side (base side) is roughly frustum-shaped. The large-diameter portion 54 and the small-diameter portion 55 are both roughly cylindrical, with the large-diameter portion 54 having a larger diameter (larger cross-sectional area) than the small-diameter portion 55. Therefore, the second pen tip member 17 is in the middle of its longitudinal direction (front-to-back direction) and has a stepped portion at the boundary between the large-diameter portion 54 and the small-diameter portion 55. The small-diameter portion 55 has a tapered portion 55a at its rear end, where the diameter decreases towards the rear end.

[0045] In this embodiment, the second pen tip member 17 is formed by extruding and stretching a synthetic resin having fine pores inside, leaving these pores intact. In this embodiment, engineering plastic (polyacetal resin) is used as the synthetic resin. In other words, the second pen tip member 17 in this embodiment is a plastic tip. From the above, the second pen tip member 17 is elastic and has higher wear resistance than the first pen tip member 16. The second pen tip member 17, although not shown in the figure, has a slit (opening) that serves as an ink outlet around the tip of the hemispherical portion located at the front end of the pen tip portion 53, and a slit that serves as an ink inlet at the rear end of the small diameter portion 55. It also has an ink passage inside that connects these front and rear slits. This ink passage is a fine pore that carries the ink by capillary action. In other words, the second pen tip member 17 is also a member that can move the ink (coating liquid) toward the pen tip side (front side).

[0046] As shown in Figures 2, 8, etc., the tip plug member 5 is installed with its front portion exposed to the outside of the main body cylinder 2 and its rear portion housed inside the main body cylinder 2. As shown in Figure 9, the tip plug member 5 has a front opening 60 and a rear opening 61. As shown in Figure 10, an internal space 62 is formed between the front opening 60 and the rear opening 61, extending over the entire length (front-to-back direction). In other words, the tip plug member 5 is a cylindrical member in which the inside and outside are in communication at the front and rear ends. As shown in Figures 9 and 10, the tip cap member 5 is provided with a support projection 65 (projection) at the front end (the tip side of the first pen tip portion 3). Additionally, the rear end portion is provided with a first notch 66 (missing portion) and a second notch 67 (missing portion).

[0047] Here, as shown in Figure 10, the internal space 62 of the tip plug member 5 is divided into a front housing section 70, a first rear housing section 71 (first housing section), and a second rear housing section 72 (second housing section). More specifically, the tip plug member 5 has a partition wall 73 inside, and this partition wall 73 divides the rear portion (partitioned space) which is part of the internal space 62 into the first rear housing section 71 and the second rear housing section 72. The rear opening 61 is also divided into a first rear opening 61a and a second rear opening 61b by a partition wall 73. The first rear opening 61a is the opening that connects the first rear storage section 71 to the outside, and the second rear opening 61b is the opening that connects the second rear storage section 72 to the outside.

[0048] Furthermore, a vertical wall-like portion 75 is provided inside the front plug member 5, adjacent to the rear of the front housing portion 70. This vertical wall-like portion 75 is a vertical wall-like part that separates the front housing portion 70 from the rear space (first rear housing portion 71, second rear housing portion 72). A first communication hole portion 79 and a second communication hole portion 80 are provided in this vertical wall-like portion 75. The first communication hole 79 is a hole that connects the front housing section 70 and the first rear housing section 71, and penetrates a part of the vertical wall-like section 75 in the thickness direction. The second communication hole 80 is a hole that connects the front housing section 70 and the second rear housing section 72, and penetrates a part of the vertical wall-like section 75 in the thickness direction. Although not particularly limited, in this embodiment, the thickness (length in the front-rear direction) of the portion of the vertical wall-like section 75 located between the front storage section 70 and the second rear storage section 72 is greater than the thickness of the portion located between the front storage section 70 and the first rear storage section 71. Therefore, in this embodiment, the length of the first rear storage section 71 in the front-rear direction is greater than the length of the second rear storage section 72 in the front-rear direction, and the front end portion of the first rear storage section 71 is located in front of the front end portion of the second rear storage section 72.

[0049] The second communication hole 80 has a pen tip side portion 80a (widened diameter portion), an intermediate portion 80b, and a rear portion 80c (narrowed diameter portion). The intermediate portion 80b is located between the pen tip side portion 80a and the rear portion 80c, and becomes narrower (the area of ​​the cross-section becomes smaller) as it approaches the rear portion 80c. The pen tip side portion 80a is a portion that is wider in diameter (the area of ​​the cross-section is larger) than the rear portion 80c.

[0050] As shown in Figure 9(a), the support projection 65 is a projection that protrudes forward from the front end surface of the main body portion of the tip plug member 5, at a position adjacent to the front opening 60. A support groove 83 is formed in the portion of the support projection 65 where the inward-facing surface is located. The support groove 83 is a groove that is recessed outward.

[0051] As shown in Figures 10 and 11, the front housing portion 70 is provided with a support groove forming portion 85. The support groove forming portion 85 is a groove formed on the inner circumferential surface of the front housing portion 70 and is recessed outwards. The support groove forming portion 85 is located behind the support groove portion 83 and together with the support groove portion 83 forms a series of groove portions (hereinafter also referred to as the tip plug side groove portion 87). That is, the inner surface of the support groove portion 83 (the surface that forms the groove bottom and groove wall) and the inner surface of the support groove forming portion 85 form a series of surfaces to form the tip plug side groove portion 87. Furthermore, the groove wall portion of the tip plug side groove 87 is provided with multiple (two) support protrusions 88. The support protrusions 88 are raised portions compared to the surrounding area, and their protruding ends have a rounded shape (see Figure 17). These support protrusions 88 extend in the front-rear direction from the front end to the rear end of the tip plug side groove 87. In other words, they extend across the entire area of ​​the tip plug side groove 87.

[0052] Furthermore, the front housing section 70 is provided with a plurality of support rib portions 90, as shown in Figures 10 and 11(b), etc. The support rib portions 90 are projections that protrude inward from the inner circumferential surface of the front housing section 70 and extend in the front-rear direction. The plurality of support rib portions 90 are formed at separate positions in the circumferential direction of the front housing section 70, as shown in Figure 12(a).

[0053] Furthermore, the first rear housing section 71 is provided with a first positioning projection 93, as shown in Figures 10, 11, and 12(b). The first positioning projection 93 is located behind the portion of the vertical wall-like section 75 where the first communication hole 79 is formed. Furthermore, the second rear housing section 72 is provided with a second positioning projection 94. The second positioning projection 94 is formed adjacent to the rear of the vertical wall-like section 75. The second communication hole 80 described above is a hole that extends through the vertical wall-like section 75 and the second positioning projection 94. As shown in Figure 10, the rear end portion of the second positioning projection 94 is located further back than the rear end portion of the first positioning projection 93 described above.

[0054] The first notch 66 and the second notch 67 are notched portions formed on the rear side of the tip plug member 5, as shown in Figures 9 and 10, etc. More specifically, they are formed near the rear end of the side surface of the tip plug member 5 and extend forward from the rear end. In other words, the first notch 66 and the second notch 67 are missing portions formed by the absence of a part of the side surface. These first notch 66 and second notch 67 are located on the side surface of the tip plug member 5, on opposite sides of the partition wall 73.

[0055] Furthermore, the tip plug member 5 is provided with two flow path forming sections 98, as shown in Figure 9(a), etc. The flow path forming sections 98 form air passages that connect the inside and outside of the applicator 1. More specifically, as shown in Figures 10, 11(b), etc., the flow path forming recess 98a formed on the inner circumferential surface of the front housing section 70, the flow path forming hole 98b formed in the vertical wall-like section 75, and the space behind the flow path forming hole 98b are continuous in the front-rear direction, forming the flow path forming section 98. The "space behind the flow path forming hole 98b" referred to here is the space adjacent to the first positioning projection 93 and surrounded on three sides by the first positioning projection 93. The flow path forming hole 98b is a hole integrally formed adjacent to the first communication hole 79, as shown in Figure 12(a), etc., and penetrates the vertical wall-like section 75 in the thickness direction, similar to the first communication hole 79.

[0056] As shown in Figure 12(b), the partition wall 73 of this embodiment is located away from the center of the rear portion of the internal space 62 (hereinafter also referred to as the partitioned space) (the position indicated by the symbol P in the figure). In other words, the partition wall 73 is positioned at a location offset from the center of the space it partitions (the partitioned space). It then divides the partitioned space into two spaces (the first rear storage section 71 and the second rear storage section 72).

[0057] Here, the "compartmented space" consists of the first rear storage section 71, the second rear storage section 72, and the area between them (the area where the partition wall section 73 is located). The compartmented space in this embodiment is a space with a roughly circular cross-section that extends in the front-rear direction, and is the area enclosed by the dotted line indicated by the symbol S in Figure 12(b). Therefore, the "center of the compartmented space" in this embodiment is also the part where the midpoint of the diameter is located in the cross-section of each part of the compartmented space.

[0058] In other words, the "center of the partitioned space" is the position through which the centers of the cross-sectional shapes of each part of the partitioned space pass. Therefore, it is the center in the application direction X (left-right direction in Figure 12(b)) and also the center in the orthogonal direction (up-down direction in Figure 12(b), which will be explained in more detail later). The orthogonal direction is also the parallel direction of the first pen tip member 16 and the second pen tip member 17 (see Figure 17). This "center of the partitioned space" can also be said to be the position furthest from the outer periphery of the partitioned space or its vicinity. Furthermore, in this embodiment, the "center of the partitioned space" is also the portion located on the central axis of the applicator 1 (main cylinder 2) (the portion through which the central axis passes). In other words, in the tip plug member 5 of this embodiment, when the portion on the central axis of the applicator 1 (main cylinder 2) is taken as the center position, the partition wall portion 73 is formed at a position away from the center position of the applicator 1 (main cylinder 2). To put it another way, the partition wall portion 73 is formed so that its entirety does not overlap with the central axis of the applicator 1 (main cylinder 2).

[0059] From the above, the first rear housing section 71 and the second rear housing section 72 have the same maximum length L7 in the coating direction X, but their maximum lengths L8 and L9 in the orthogonal direction are different. The maximum length L8 of the first rear housing section 71 in the orthogonal direction is longer than the maximum length L9 of the second rear housing section 72 in the same direction. More specifically, the length L8 described above is more than half the maximum length L10 in the orthogonal direction of the partitioned space, and in this embodiment, it is approximately 55.5 percent of the length L10 described above. On the other hand, the length L9 described above is shorter than half the length L10 described above, and is approximately 40 percent of the length L10 described above.

[0060] Therefore, the area of ​​the cross-section of each part of the first rear storage section 71 is larger than the area of ​​the cross-section of the second rear storage section 72 at the same position (a position where the front-rear direction is the same). And the volume of the first rear storage section 71 is larger than the volume of the second rear storage section 72. Furthermore, the cross-sectional shape (shape when viewed from the rear) of the first rear storage section 71 and the second rear storage section 72 is roughly dome-shaped, with the partition wall section 73 side being flattened. That is, the length of the first rear storage section 71 and the second rear storage section 72 in the orthogonal direction (vertical direction in Figure 12(b)) is longest at the center of the coating direction X (horizontal direction in Figure 12(b)). Then, up to the vicinity of the end of the coating direction X, the length in the orthogonal direction decreases as you move towards the end in that direction.

[0061] As shown in Figure 8, the first ink-absorbing body 6 has a substantially cylindrical outer casing member 6a and a padding 6b (a fiber bundle and means for impregnating with the coating liquid). The padding 6b is packed inside the outer casing member 6a, and the packed padding 6b is impregnated with ink to form the first ink-absorbing body 6. The second ink-absorbing body 7 also has an outer shell member 7a and a cotton core 7b. The cotton core 7b packed inside the outer shell member 7a is impregnated with ink. Although not particularly limited, the outer members 6a and 7a are resin tubes formed from a suitable material such as PP (polypropylene), and their outer shape before assembly is approximately cylindrical. The padding 6b and 7b are fiber bundles having continuous pores that can be impregnated with ink. This padding 6b and 7b is composed of suitable fibers, and may be synthetic fibers such as polyester fibers, plant fibers such as cotton and pulp, or animal fibers such as wool and raw silk.

[0062] In this embodiment, the first ink-absorbing body 6 and the second ink-absorbing body 7 are impregnated with different inks. That is, the first ink (coating liquid) impregnated in the first ink-absorbing body 6 and the second ink (coating liquid) impregnated in the second ink-absorbing body 7 differ in at least one of their hue, saturation, and lightness. Furthermore, in this embodiment, as shown in Figure 2, the total length of the first ink absorber 6 is shorter than the total length of the second ink absorber 7. Also, the thickness of the first ink absorber 6 in its natural state (a state in which no external force is applied, and before assembly) is greater than the thickness of the second ink absorber 7 in its natural state. To explain in detail, both the first ink-absorbing body 6 and the second ink-absorbing body 7 are components whose cross-sections are approximately circular in their natural state. Furthermore, the radial length (diameter) of the cross-section of the first ink-absorbing body 6 in its natural state is longer than the radial length of the cross-section of the second ink-absorbing body 7 in its natural state.

[0063] In other words, the first ink-absorbing body 6 and the second ink-absorbing body 7 in this embodiment differ in both length and thickness in their natural state. More specifically, the length of the first ink absorber 6 is approximately 85 percent of the length of the second ink absorber 7. Furthermore, the cross-sectional area of ​​the first ink absorber 6 in its natural state is approximately 1.8 times the cross-sectional area of ​​the second ink absorber 7 in its natural state. In this embodiment, although not particularly limited, the diameter of the cross-section of the first ink absorber 6 in its natural state is 4.0 mm, and the diameter of the cross-section of the second ink absorber 7 in its natural state is 3.0 mm. In this embodiment, the diameter of the rear end face of the rear-side thin shaft portion 24 is set to be approximately 50 percent of the diameter of the cross-section of the first ink-absorbing body 6, so that the rear end portion of the rear-side thin shaft portion 24 is sufficiently thinner than the first ink-absorbing body 6. Therefore, when assembling the applicator 1 (details will be described later), the process of inserting the rear-side thin shaft portion 24 into the first ink-absorbing body 6 becomes easier.

[0064] The rear second pen tip section 4, as shown in Figure 13(a), has a pen tip member 100 (third coating section, coating) and a pen tip holding member 101. Unlike the first pen tip section 3 on the opposite side, this second pen tip section 4 is not intended for drawing multiple lines (double lines) in a single stroke. That is, while the first pen tip section 3 described above is composed of multiple pen tip members (coatings), the second pen tip section 4 is composed of a single pen tip member (coating). In other words, the first pen tip section 3 and the second pen tip section 4 have different numbers of coatings.

[0065] The pen tip member 100 is a rod-shaped plastic tip and is an ink-coating body (reverse side ink-coating body portion) located on the opposite side of the first pen tip member 16 and the second pen tip member 17. In other words, the pen tip member 100 is a member that can draw in ink by capillary action and move it toward the pen tip side (rear side). Specifically, as shown in Figure 13(b), it has a thin tip section 100a, a tapered tip section 100b, a thick section 100c, a thin section 100d, and an insertion section 100e, starting from one end (pen tip side) in the longitudinal direction.

[0066] The slender tip section 100a is a rod-shaped portion with a rounded end on the pen tip side. The tapered portion 100b on the pen tip side is the part that tapers towards the pen tip side (the side with the thin tip portion 100a). Both the thick shaft portion 100c and the thin shaft portion 100d are round rod-shaped parts, with the thick shaft portion 100c being thicker than the thin shaft portion 100d. Therefore, a stepped portion is formed at the boundary between the thick shaft portion 100c and the thin shaft portion 100d. The insertion side portion 100e has a section that tapers as it moves away from the pen tip side. More specifically, it tapers towards the other end in the longitudinal direction (the end opposite to the pen tip side), and the other end has a rounded shape.

[0067] The pen tip holding member 101 is a member in which a tip side portion 101a, which has an outer shape that is roughly frustoconical, and an insertion tube portion 101b, which has an outer shape that is cylindrical, are integrally formed. In other words, the tip side portion 101a has a tapered surface whose side portion widens towards the insertion cylinder portion 101b side, and has a stepped surface portion 102 at the end on the insertion cylinder portion 101b side. The stepped surface portion 102 is a vertical wall-like surface formed to connect the side portion (tapered surface) of the tip side portion 101a and the outer circumferential surface of the insertion cylinder portion 101b. Furthermore, the pen tip holding member 101 has a rib portion 103 that protrudes from the stepped surface portion 102 toward the insertion cylinder portion 101b. In this embodiment, there are multiple rib portions 103 (four in total, one of which is not shown in Figure 13) and they are spaced apart in the circumferential direction of the insertion cylinder portion 101b.

[0068] The pen tip holding member 101 has an insertion hole portion 104. The insertion hole portion 104 is a hole that penetrates the pen tip holding member 101 in the longitudinal direction (the direction in which the tip side portion 101a and the insertion cylinder portion 101b are aligned). That is, one opening of the insertion hole portion 104 is formed on the tip side portion 101a, and the other opening is formed on the insertion cylinder portion 101b. The portion of the insertion hole portion 104 that is on one longitudinal side (the opening side of the tip side portion 101a) is narrower than the portion that is on the other longitudinal side (the opening side of the insertion cylinder portion 101b). In other words, a stepped portion 104a (see Figure 13(a)) is formed on the inner circumferential surface of the insertion hole portion 104 at the boundary between these two portions.

[0069] The core member 8 is a substantially cylindrical member, as shown in Figure 14. Specifically, as shown in Figure 14(b), it has a first opening 116 located on the pen tip side and a second opening 117 located on the opposite side (towards the back of the main body cylinder 2), and an internal core space 118 is formed between the first opening 116 and the second opening 117. This internal core space 118 is a space formed over the entire longitudinal direction (front-to-back direction) of the core member 8 and is continuous with the outside through the first opening 116 and the second opening 117.

[0070] Of the outer surface of the core member 8, the portion on the side of the first opening 116 is a tapered surface that narrows towards the end on the side of the first opening 116, as shown in Figure 14(a). In addition, a reinforcing rib 119 is formed on the portion on the side of the second opening 117.

[0071] Here, the portion where the reinforcing rib 119 is formed has a longer maximum radial length compared to the portion adjacent to the first opening 116. That is, the core member 8 has a small-diameter portion 122, which is a thin portion, and a large-diameter portion 123, which is a thick portion, and they are arranged in the order of small-diameter portion 122 and large-diameter portion 123 from the first opening 116 side. Furthermore, the outer surface of the large-diameter portion 123 is located outside the outer surface of the small-diameter portion 122. As a result, a stepped portion (core stepped portion 124) is formed between the outer surface of the small-diameter portion 122 and the outer surface of the large-diameter portion 123.

[0072] In the core's internal space 118, as shown in Figure 14(b), there is an internal tapered portion 128 around the second opening 117. This internal tapered portion 128 becomes narrower (the area of ​​the cross-section decreases) as it approaches the first opening 116. In other words, it has an inclined surface portion that slopes outward (radially outward) as it approaches the second opening 117. Thus, the second opening 117 has a larger opening area than the first opening 116, and the internal tapered portion 128 is located adjacent to the inside of the second opening 117, making it easier to insert the second ink absorber 7 during assembly. Furthermore, multiple retaining protrusions 120 are formed in the area surrounding the first opening 116. The retaining protrusions 120 are each formed at positions separated in the circumferential direction on the inner surface of the core internal space 118.

[0073] Next, the structure of the applicator 1 of this embodiment will be described. In the applicator 1 of this embodiment, as shown in Figure 8, the rear portions of the first pen tip member 16 and the second pen tip member 17, and the front portions of the first ink absorber 6 and the second ink absorber 7 are held by the tip stopper member 5.

[0074] When assembling the applicator 1 of this embodiment, as shown in Figure 15(a), the first ink absorber 6 is inserted through the first rear opening 61a of the tip stopper member 5, and then the second ink absorber 7 is inserted through the second rear opening 61b. At this time, as the first ink absorber 6 is moved forward (relatively to the support projection 65), the front end portion (the tip portion in the insertion direction) of the first ink absorber 6 comes into contact with the first positioning projection 93 from the rear, as shown in Figure 8. Similarly, as the second ink absorber 7 is moved forward, the front end portion (the tip portion in the insertion direction) of the second ink absorber 7 comes into contact with the second positioning projection 94 from the rear. From these results, the first ink absorber 6 and the second ink absorber 7 are positioned in appropriate locations within the tip stopper member 5.

[0075] When a portion of the first ink-absorbing body 6 (front portion) and a portion of the second ink-absorbing body 7 (front portion) are housed in the first rear housing section 71 and the second rear housing section 72, respectively, they become compressed (deformed from their natural shape), as shown in Figure 16. In other words, the front portions of the first ink-absorbing body 6 and the second ink-absorbing body 7 become deformed inside the first rear housing section 71 and the second rear housing section 72.

[0076] In other words, the first ink storage body 6 is a component whose cross-sectional shape in its natural state is circular (approximately circular) (not shown). Furthermore, the radial length of the cross-section of the first ink storage body 6 in its natural state (the cross-section before deformation, not shown) is longer than the maximum length L8 in the direction perpendicular to the first rear storage section 71 (see Figure 16). Then, when the first ink absorber 6 is placed in the first rear storage section 71 as described above (see Figure 15(a)), the worker presses the first ink absorber 6 against the partition wall 73, causing the first ink absorber 6 to deform. This makes it possible to move the first ink absorber 6 forward. When the first ink absorber 6 is moved forward and its front portion is placed in the first rear storage section 71, the first ink absorber 6 is sandwiched between the partition wall 73 and the inner wall portion on the opposite side (part of the wall portion forming the inner circumferential surface of the first rear storage section 71). As a result, the front portion of the first ink absorber 6 is placed in the first rear storage section 71 while remaining deformed. More specifically, as shown in Figure 16, the front portion of the first ink absorber 6 is placed in a deformed state such that its cross-section is elliptical (approximately elliptical), that is, it is placed in a deformed state as if it were slightly crushed.

[0077] As shown in Figure 16, the length of the deformed cross-section in the orthogonal direction (the vertical length in Figure 16, which is the length of the minor axis of the ellipse) is approximately the same as L8. As a result, the first ink absorber 6 is in strong contact with parts of the inner surfaces of the first rear storage section 71, which are located at a distance from each other in the orthogonal direction (the vertical direction in Figure 16) (one side is in strong contact with a part of the main surface of the partition wall section 73). Therefore, unintended displacement of the first ink absorber 6 can be suppressed.

[0078] The second ink-absorbing body 7 also has a circular (approximately circular) cross-sectional shape in its natural state (not shown), and is housed in a deformed state as if slightly compressed, as shown in Figure 16. The radial length of the cross-section of the second ink-absorbing body 7 in its natural state is longer than the maximum length L9 in the direction perpendicular to the second rear housing section 72. Then, similar to the case of the first ink-absorbing body 6 described above, when the second ink-absorbing body 7 is housed in the second rear storage section 72, the worker can press the second ink-absorbing body 7 against the partition wall 73, causing it to deform and move forward. In this embodiment, the tip stopper member 5 is provided with a second notch 67, which facilitates the worker's pressing of the second ink-absorbing body 7. Once the second ink-absorbing body 7 is housed in the second rear storage section 72, it is sandwiched between the partition wall 73 and the inner wall on the opposite side, remaining in its deformed state. At this time, the second ink-absorbing body 7 has an elliptical (approximately elliptical) cross-sectional shape after deformation, and its length in the orthogonal direction (the length in the vertical direction in Figure 16, which is the length of the minor axis of the ellipse) is approximately the same as that of L9. Furthermore, the second ink-absorbing body 7 also strongly contacts parts of the inner surfaces of the second rear storage section 72, which are located at a distance from each other in the orthogonal direction (up and down direction in Figure 16) (one side is in contact with a part of the main surface of the partition wall section 73). This prevents unintended displacement of the second ink-absorbing body 7.

[0079] Furthermore, when comparing the cross-section of the front portion of the first ink-absorbing material 6 before and after deformation, approximately 20 percent of the entire cross-section is deformed (the deformation rate is approximately 20 percent). In contrast, when comparing the cross-section of the front portion of the second ink-absorbing material 7 before and after deformation, approximately 17 percent of the entire cross-section is deformed (the deformation rate is approximately 17 percent). In other words, the first ink absorber 6 is housed in the tip stopper member 5 in a state that is more deformed (higher deformation rate) than the second ink absorber 7.

[0080] As in this embodiment, by using a structure in which the front portion of the ink absorbent is deformed and housed (held) in the tip stopper member 5, a relatively thick ink absorbent can be used without making the entire applicator 1 or its pen tip portion unnecessarily thick. Furthermore, as described above, the tip stopper member 5 of this embodiment accommodates the first ink-absorbing body 6 and the second ink-absorbing body 7, which have different thicknesses in their natural state, by deforming them. In this case, the tip stopper member 5 of this embodiment has the partition wall portion 73 formed at a position offset from the center of the partitioned space, allowing each ink-absorbing body to be accommodated in an appropriately deformed state. That is, each ink-absorbing body can be accommodated without being deformed too much, nor with too little deformation.

[0081] If the ink absorbent material is deformed too much, the cotton filling will be compressed too much, making it impossible to stably supply ink to the coating unit. In this embodiment, by setting the deformation rate of each ink absorbent material within a desirable range, the ink absorbent material is held firmly to prevent displacement, and a stable supply of ink to the coating unit is made possible. Furthermore, by forming the partition wall portion 73 at a position further away from the center of the partitioned space, or at a position closer to the center of the partitioned space, the deformation rate of each ink-absorbing material can be changed. In other words, the position where the partition wall portion 73 is provided is not limited to the position in this embodiment; it may be at a position further away from the center of the partitioned space, or at a position closer to the center of the partitioned space. Thus, it is conceivable to change (adjust) the deformation rate of each ink-absorbing material by changing the position where the partition wall portion 73 is provided.

[0082] Next, as shown in Figure 15(b), the core member 8 is attached to the rear portion of the second ink absorber 7. Then, as shown in Figure 15(c), the first ink absorber 6, the second ink absorber 7, and the core member 8 are inserted into the main body cylinder 2, and the end cap member 5 is temporarily attached to the main body cylinder 2. Although not shown in the diagram, the first pen tip member 16 and the second pen tip member 17 are temporarily attached to the tip stopper member 5. Then, by press-fitting them with a jig (not shown), the first pen tip member 16 and the second pen tip member 17 are attached to the tip stopper member 5, and the tip stopper member 5 is attached to the main body cylinder 2. Next, the pen tip member 100 and the pen tip holding member 101 (see Figure 13) are attached to the main body cylinder 2. Specifically, the pen tip member 100 is inserted into the insertion hole 104 of the pen tip holding member 101, so that the pen tip member 100 extends through the pen tip holding member 101. Then, with the pen tip member 100 still extended through the pen tip holding member 101, the pen tip holding member 101 is temporarily attached to the main body cylinder 2. After that, the pen tip holding member 101 is attached to the main body cylinder 2 by press-fitting it with a jig (not shown).

[0083] As shown in Figure 8, the first pen tip member 16 has a rear portion of the thick pen tip side shaft 23 located within the front housing 70, and a portion of the rear thin shaft 24 is inserted into the first communication hole 79. The rear portion is then inserted from the front into the first ink absorber 6 within the first rear housing 71. In other words, the rear thin shaft 24 of the first pen tip member 16 has its rear side and rear end surface in contact with the cotton wick 6b. In this embodiment, as described above, since the rear end portion of the first pen tip member 16 is thin, the cotton filling is less likely to be compressed even if the insertion length is increased. Therefore, stable ink supply is possible.

[0084] As shown in Figure 17, part of the second pen tip member 17 is located inside the housing groove 38 of the first pen tip member 16, and the other part is located inside the tip plug side groove 87. Of the portion located inside the housing groove 38, a part of the side surface is in contact with the bottom of the housing groove 38. Also, of the portion located inside the tip plug side groove 87, a part of the side surface and another part are in contact with separate support protrusions 88. In other words, three circumferentially separated locations on the side surface of the second pen tip member 17 are in contact with the bottom of the housing groove 38, the tip of one support protrusion 88, and the tip of the other support protrusion 88, respectively. In other words, the accommodating groove 38 and the tip plug side groove 87 are positioned opposite each other, creating a space that extends in the front-to-back direction, as shown in Figures 8 and 17. The majority of the large-diameter portion 54 (see Figure 8, etc.) of the second pen tip member 17 is then positioned within this space.

[0085] As shown in Figure 19, the second pen tip member 17 protrudes by a predetermined length L3 in the protrusion direction X2, where X2 is the direction perpendicular to the tip surface 30, from the portion of the second pen tip member 17 that is on the same plane as the tip surface 30. This predetermined length L3 is also the distance from the portion of the second pen tip member 17 that lies on the same plane as the tip surface portion 30 to the tip portion in the protruding direction X2. In this embodiment, the rear end portion of the large-diameter portion 54 of the second pen tip member 17 (see Figure 7) is in contact with the front surface of the vertical wall-shaped portion 75 of the tip plug member 5 (see Figure 11(b)) (see Figure 8). In other words, the stepped portion of the second pen tip member 17 engages with the stepped portion of the tip plug member 5 (the step between the inner surface of the tip plug side groove portion 87 and the inner circumferential surface of the second communication hole portion 80).

[0086] Furthermore, the front end portion (upper end in Figure 19) of the second pen tip member 17 is located behind the front end of the tip surface portion 30, and in front of the rear end of the tip surface portion 30.

[0087] Furthermore, as shown in Figure 17, in a plan view from the front, a portion of the second pen tip member 17 is located between a portion of one first curved portion 43 and a portion of the other first curved portion 43. In this embodiment, in this plan view, a portion of the tip periphery of the second pen tip member 17 (a portion that becomes the ink outlet) is located between the portions of the two first curved portions 43.

[0088] As shown in Figure 8, the rear portion of the second pen tip member 17 is inserted into the second ink storage body 7 from the front within the second rear storage section 72. That is, the rear portion (small diameter portion 55) of the second pen tip member 17 is in contact with the cotton core 7b.

[0089] Furthermore, as shown in Figure 13(a), at the rear end of the applicator 1, the pen tip member 100 is attached to the main body cylinder 2 via the pen tip holding member 101. More specifically, the insertion cylinder portion 101b is inserted into the narrow diameter portion 10 from the outside, and the insertion cylinder portion 101b is fitted inside. At this time, the narrow diameter portion 10 has multiple ribs on its inner circumference (detailed illustration is omitted). Each of the ribs is spaced apart in the circumferential direction of the main body cylinder 2 and extends in the front-rear direction. Multiple ribs in the narrow diameter section 10 contact the outer circumferential surface of the insertion cylinder section 101b from the outside. In addition, some of the ribs contact the rib section 103 of the pen tip holding member 101 from the front (from the left side in Figure 13). As a result, the gaps formed between the rib sections 103 of the pen tip holding member 101 and the gaps formed between the ribs of the narrow diameter section 10 form an air passage that connects the inside and outside of the applicator 1. In other words, the applicator 1 of this embodiment has air passages in both the first pen tip section 3 and the second pen tip section 4.

[0090] Furthermore, the pen tip member 100 is inserted through the insertion hole 104 of the pen tip holding member 101. That is, a portion of the pen tip member 100, including the pen tip member 100 and the thin tip portion 100a, is located behind the pen tip holding member 101 (to the right in Figure 13) and is exposed to the outside. Another portion, including part of the thick portion 100c and part of the thin portion 100d, is located inside the insertion hole 104. Furthermore, another portion is located in front of the pen tip holding member 101 (to the left in Figure 13). At this time, the longitudinal direction of the pen tip member 100 and the longitudinal direction of the main body cylinder 2 are the same (front-to-back direction). Also, inside the pen tip holding member 101, the stepped portion formed at the boundary between the thick portion 100c and the thin portion 100d is in contact with the stepped portion 104a of the insertion hole 104.

[0091] On the other hand, the rear portion of the second ink-absorbing body 7 is inserted through the core member 8. That is, the rear portion of the second ink-absorbing body 7 is inserted from the second opening 117, passes through the inside of the core internal space 118, and extends from the first opening 116 to the rear (towards the pen tip side of the second pen tip portion 4). In other words, a part of it is located in the core internal space 118, and the portion located behind it is positioned behind the core member 8. The pen tip member 100 is then inserted into the rear portion of the second ink-absorbing body 7 from the rear. More specifically, a part of the thin shaft portion 100d and the insertion side portion 100e are inserted. As shown in Figure 2, the second ink reservoir 7 has two different pen tip members (second pen tip member 17 and pen tip member 100) inserted into each of its longitudinal ends. In other words, the second ink reservoir 7 supplies ink to the two pen tip members.

[0092] In this case, the core member 8 is positioned to surround most of the portion of the second ink-absorbing body 7 into which the pen tip member 100 is inserted. Specifically, as shown in Figure 20, the core member 8 is positioned within the narrow diameter portion 10, the intermediate portion 11, and the widened diameter portion 12 of the internal space of the main body cylinder 2. More specifically, as described above, the internal space of the main body cylinder 2 narrows in stages towards the rear end (right side in Figure 4α). The portion in which the small diameter portion 122 of the core member 8 is housed is narrower than the portion in which the large diameter portion 123 of the core member 8 is housed.

[0093] In other words, as described above, by inserting the core member 8 into the main cylinder 2 (see Figure 15(c)), as shown in Figure 20, the small-diameter portion 122 fits into a relatively narrow part of the internal space of the main cylinder 2, and the core step portion 124 of the core member 8 comes into contact with the step portion of the internal space. As a result, the core member 8 is positioned in the specified location.

[0094] At this time, since the rear portion of the second ink absorber 7 is inserted into the core member 8, the rear portion of the second ink absorber 7 is also positioned in a predetermined location. That is, the rear portion of the second ink absorber 7 is positioned towards the center of the internal space of the main body cylinder 2. In detail, the rear portion of the second ink-absorbing body 7 is positioned so that its entire outer surface is separated from the inner surface of the main body cylinder 2. Furthermore, the central part of the cross-sectional shape of this rear portion is positioned on the central axis of the applicator 1 (main body cylinder 2), or close to the central axis of the applicator 1 (main body cylinder 2).

[0095] Within the core member 8, each of the multiple retaining protrusions 120 (see Figure 14) formed at circumferentially separated positions is in contact (tightly attached) with the outer surface of the second ink-absorbing body 7. As a result, the front portion (left side in Figure 20) of the second ink-absorbing body 7 within the core member 8 is loosely fitted to the core member 8, while the rear portion (right side in Figure 20) is tightly fitted to the core member 8 and does not move relative to it. Specifically, on the front side, there is a certain gap between the inner surface of the core member 8 and the outer surface of the second ink-absorbing body 7, allowing the second ink-absorbing body 7 to move relative to the core member 8. In contrast, on the rear side, a portion of the second ink-absorbing body 7 is fitted tightly against the core member 8, preventing relative movement between them.

[0096] In this embodiment, the second ink absorber 7 is inserted into the main body cylinder 2 with the core member 8 attached to a portion of it, so that the rear end portion of the second ink absorber 7 does not shift from its designated position inside the main body cylinder 2. As described above, the core member 8 functions as an auxiliary mounting means for positioning the rear portion of the second ink absorbent 7 in a specified position during the assembly of the applicator 1, and also functions as a means for preventing misalignment of the rear portion of the second ink absorbent 7 after assembly. Furthermore, in this embodiment, as shown in Figure 20, the core member 8 is located behind the rear end portion of the first ink storage body 6 (to the right of the right end portion in Figure 20), and the rear end portion of the first ink storage body 6 and the core member 8 are in contact. This prevents unintended rearward displacement of the first ink storage body 6. In other words, the core member 8 also functions as a displacement prevention means to prevent displacement of the first ink storage body 6.

[0097] On the other hand, as shown in Figures 2 and 20, the majority of the front portion of the second ink-absorbing body 7 is positioned closer to the inner circumferential surface of the main body cylinder 2. In other words, it is concentrated in a position close to a portion of the inner circumferential surface surrounding the internal space. The second ink-absorbing body 7 has a front portion positioned closer to the inner circumferential surface of the main body cylinder 2 and a rear portion positioned closer to the center of the main body cylinder 2, with a portion extending from the radially outer side of the main body cylinder 2 toward the center (hereinafter also referred to as the curved portion). The curved portion of this second ink-absorbing body 7 extends while in contact with the internal tapered portion 128 and the corner portion adjacent to this internal tapered portion 128.

[0098] As the second ink-absorbing body 7 bends and stretches, the first ink-absorbing body 6 is pressed against the inner surface of the main body cylinder 2 by the second ink-absorbing body 7. As a result, one side of the first ink-absorbing body 6 (the side facing the second ink-absorbing body 7) is deformed in a way that causes it to be pulled.

[0099] Here, as described above, the first ink-absorbing body 6 and the second ink-absorbing body 7 are both housed in the tip stopper member 5 in a state where their front portions are deformed so as to be bent, and are arranged inside the main body cylinder 2. From the above, the first ink-absorbing body 6 has parts with different cross-sectional shapes in each part along its longitudinal direction. Specifically, the front part housed in the tip stopper member 5, the middle part located behind it, and the rear part positioned closer to the second pen tip 4 (see Figure 2, etc.) have different cross-sectional shapes. That is, the front part has a roughly elliptical cross-sectional shape, the majority of the middle section has a roughly circular cross-sectional shape, and the rear part has a shape with a depression in part.

[0100] Furthermore, the second ink-absorbing body 7 of this embodiment also has different cross-sectional shapes in the front portion housed in the tip stopper member 5 and the portion located behind it. Specifically, the front portion of the second ink-absorbing body 7 has a roughly elliptical cross-sectional shape as described above, while the majority of the rear portion has a roughly circular cross-sectional shape. Therefore, the second ink-absorbing body 7 also has portions with different cross-sectional shapes in each part that is located at different positions in the longitudinal direction.

[0101] As described above, inside the applicator 1 of this embodiment, the first ink absorber 6 and the second ink absorber 7 extend side by side in most of the front portion (see Figure 2). In this portion, both the first ink absorber 6 and the second ink absorber 7 are unevenly distributed in close proximity to a portion of the inner circumferential surface. Specifically, the portion of the inner circumferential surface adjacent to the first ink absorber 6 (the upper portion in Figure 2) and the other portion of the inner circumferential surface adjacent to the second ink absorber 7 (the lower portion in Figure 2) are separated radially from each other and are on opposite sides of the main body cylinder 2. In other words, in this section, both the first ink-absorbing body 6 and the second ink-absorbing body 7 are positioned not towards the center of the main body cylinder 2, but rather towards the radially outer side (closer to the inner circumferential surface).

[0102] Furthermore, as described above, the rear portion of the first ink-absorbing body 6 is pressed by the second ink-absorbing body 7 and is pressed against a part of the inner circumferential surface of the main body cylinder 2. Furthermore, a portion of the second ink-absorbing body 7 extends further rearward than the rear end of the first ink-absorbing body 6. The rear portion of the second ink-absorbing body 7 also curves outward from the radially outward direction towards the center, with a portion further rearward extending in a straight line. This straight-line portion extends in the same direction as the longitudinal direction of the main body cylinder 2.

[0103] Now, focusing on the first pen tip portion 3, the applicators belonging to the first pen tip portion 3 (first pen tip member 16, second pen tip member 17) are all positioned so that their central portions do not coincide with the central axis of the applicator 1 (main body cylinder 2), as shown in Figure 17. In other words, their central portions are all positioned so as to be offset from the central portion of the applicator 1 (main body cylinder 2).

[0104] In detail, in a plan view from the pen tip side (front side) of the first pen tip portion 3, point Pα, which is the center of the main body cylinder 2, and point P1, which is the center of the first pen tip member 16, are at offset positions. Point Pα is the part where the central axis of the main body cylinder 2 is located (the part through which the central axis passes). Furthermore, point P1 is the point where, in the same plan view, the center line (not shown) of the first pen tip member 16 in the coating direction X intersects with the center line (not shown) of the first pen tip member 16 in the direction perpendicular to it (the vertical direction in Figure 17). In other words, it is the center point in both the coating direction X and the perpendicular direction.

[0105] Furthermore, in a plan view from the pen tip side (front side) of the first pen tip portion 3, point Pα, which is the center of the main body cylinder 2, and point P2, which is the center of the second pen tip member 17, are at offset positions. Point P2 is the part where the central axis of the second pen tip member 17 is located (the point that coincides with the central axis), and is the radial center of the second pen tip member 17. In other words, in the same plan view, it is the center of the second pen tip member 17 in the application direction X and the direction perpendicular to it.

[0106] In contrast, in the second pen tip section 4, as shown in Figure 21, in a plan view from the pen tip side (rear side) of the second pen tip section 4, point Pα, which is the center of the main body cylinder 2, and point P3, which is the center of the pen tip member 100, are in the same position. Point P3 is the part where the central axis of the pen tip member 100 is located (the point that coincides with the central axis), and is the center point of the pen tip member 100 in the radial direction. That is, in the same plan view, it is the center point of the pen tip member 100 in the application direction X and the direction perpendicular to it.

[0107] As described above, with a structure in which the first ink absorber 6 and the second ink absorber 7 are deformed and housed inside the main body cylinder 2, even if the main body cylinder 2 is made slender, the first ink absorber 6 and the second ink absorber 7 can be housed inside the main body cylinder 2 without being made unnecessarily slender. In other words, the entire applicator 1 can be made slender without reducing the amount of ink it can hold.

[0108] Furthermore, as described above, by deforming the second ink-absorbing body 7 and housing it inside the main body cylinder 2, it becomes possible to insert the second pen tip member 17 and the pen tip member 100 into each of the longitudinal ends of the second ink-absorbing body 7 in a desirable state. In other words, in the above structure, the portion of one end of the second ink-absorbing body 7 extends in the same direction as the second pen tip member 17, and the second pen tip member 17 can be inserted near the center of the second ink-absorbing body 7. In addition, the other end of the second ink-absorbing body 7 also extends in the same direction as the pen tip member 100 through which it is inserted, and the pen tip member 100 can be inserted near the center of the second ink-absorbing body 7. As a result, even if the second pen tip member 17 and pen tip member 100, which are positioned at offset locations in the radial direction (cross-sectional direction) of the applicator 1, are inserted from both sides in the longitudinal direction, the cotton batting 6b will not be unevenly pressed on both sides in the longitudinal direction of the second ink-absorbing body 7. As a result, ink can be supplied appropriately to each pen tip member.

[0109] Furthermore, as described above, the applicator 1 of this embodiment is capable of drawing double lines (multiple lines) in a single stroke using the first pen tip portion 3, and drawing lines using the second pen tip portion 4.

[0110] When drawing the desired double line on the object to be coated, such as a piece of paper, with the first pen tip portion 3, first position the tip surface portion 30 towards the object to be coated, as shown in Figure 22. Also, position the second pen tip member 17 in contact with the object to be coated, A. In this embodiment, when the applicator 1 is positioned so that the surface of the object to be coated A and the tip surface 30 are parallel to each other, the entire applicator 1 is tilted by a predetermined angle θ1 in a plan view with the coating direction X (see Figure 23(a), or the front-to-back direction in Figure 22) as the line of sight. Note that the "surface of the object to be coated A" is both the surface to be coated and a horizontal surface.

[0111] In other words, in the plan view described above, the angle between the central axis of the applicator 1 of this embodiment (an imaginary line extending in the longitudinal direction of the applicator 1) and the surface of the object to be coated A is a predetermined angle θ1. This angle is also the angle between the central axis of the applicator 1 and an imaginary line extending in a predetermined direction X3 (orthogonal direction). The predetermined direction X3 is a horizontal direction, perpendicular to the application direction X in a plan view from above (see Figure 23(a), etc.). Incidentally, the user of the applicator 1 (not shown) is located on the right side of Figure 22. In other words, the predetermined direction X3 is also the front-to-back direction (left-to-right direction in Figure 22) relative to the user of the applicator 1. Therefore, when the applicator 1 is in the above-described position, the applicator 1 will be tilted toward the user side (right side in Figure 22). That is, it will be in a position that extends toward the user side as it goes upwards.

[0112] Furthermore, in this position, the pen tip portion 53 of the second pen tip member 17 contacts the object A to be coated, while the first pen tip member 16 does not contact the object A to be coated. Therefore, if the applicator 1 is moved horizontally while maintaining this position, a single line can be drawn by the second pen tip member 17. In other words, the first pen tip portion 3 can draw a double line in one stroke, as well as a single line in one stroke using the second pen tip member 17 (it is also possible to obtain a stroke using only the second pen tip member 17).

[0113] In contrast, when drawing the desired double line, the applicator 1 is tilted from the above-described position (see Figure 22) toward the direction of travel in the application direction X (see Figure 23(a)). As a result, as shown in Figure 24, the first pen tip member 16 and the second pen tip member 17 each come into contact with the object A to be applied (multiple contact state). In other words, by tilting the applicator 1, the state changes from one in which the pen tip portion 53 of the second pen tip member 17 is in contact with the object A to be applied (see Figure 22) to one in which both the first curved portion 43 of the first pen tip member 16 and the pen tip portion 53 of the second pen tip member 17 are in contact with the object A to be applied (see Figure 24).

[0114] Here, the first curved portion 43 of the first pen tip member 16 functions as an ink application surface (ink application surface portion) that applies ink to the object when drawing the desired double line. With this structure in which the first curved portion 43 becomes an ink application surface that comes into contact with the object A to be coated, the first pen tip member 16 is less likely to wear down even after long-term use and is less likely to deform unintentionally.

[0115] Thus, in this multiple-contact state where both the first pen tip member 16 and the second pen tip member 17 are in contact with the object A to be coated, as shown in Figure 24, the entire applicator 1 is tilted by a predetermined angle θ2 in a plan view with the line of sight in a predetermined direction X3 (front-to-back direction in Figure 24). In other words, with the applicator 1 of this embodiment, when drawing the desired double line, the user is in an inclined position in both the front-to-back direction (predetermined direction X3) and the left-to-right direction (applied direction X) relative to the user.

[0116] By moving the applicator 1 (main cylinder 2) horizontally (sliding) in the direction of application X while both the first pen tip member 16 and the second pen tip member 17 are in contact with the object A to be coated, the desired double line can be drawn. The intended double line, as shown in Figure 23(b), consists of a first line 200 formed by the application of ink from the first pen tip member 16 (first curved surface portion 43) and a second line 201 formed by the application of ink from the second pen tip member 17. Specifically, the first line 200 is a wider line than the second line 201, and the second line 201 is a narrower line than the first line 200.

[0117] Furthermore, the desired double line is such that, in the coating direction X, the base end position 200a of the first line 200 and the base end position 201a of the second line 201 are at different positions. That is, the base end position 201a of the second line 201 is located closer to the base end in the coating direction X (the direction of movement of the coating tool 1). Similarly, in the coating direction X, the end position 200b of the first line 200 and the end position 201b of the second line 201 are also at different positions. The double line intended for this embodiment is a line formed by the overlapping of parts of the first line 200 and the second line 201. Furthermore, if the predetermined angle θ2 is further reduced from the state in which both the first pen tip member 16 and the second pen tip member 17 are in contact with the object to be coated A, the state will change to one in which the first pen tip member 16 is in contact with the object to be coated A, and the second pen tip member 17 is not in contact with the object to be coated A. In this state, by sliding the applicator 1, a single line can be drawn with the first pen tip member 16. In other words, the applicator 1 of this embodiment is capable of drawing a single line with a single stroke using the first pen tip member 16 (it is also possible to obtain a brushstroke made only by the first pen tip member 16).

[0118] The applicator 1 of this embodiment is not particularly limited, but is intended for use, for example, to draw such double lines on important parts of textbooks and the like. For this reason, it is preferable to use double lines with slightly offset base and end positions, as this makes the important parts stand out very well. In this case, it is also preferable to use an ink for the second ink that has lower transparency (lower light transmittance) than the first ink.

[0119] In this embodiment, as described above, a lateral inclined portion 40 is provided on the side portion, and the first curved portion 43 is adjacent to the lateral inclined portion 40 (see Figure 24, etc.). As a result, when both the first curved portion 43 and the second pen tip member 17 are in contact with the object to be coated A, the width of the first pen tip member 16 can be set to a certain length or longer, while the distance from the contact portion of the second pen tip member 17 with the object to be coated A in the coating direction X to the contact portion of the first curved portion 43 with the object to be coated A can be shortened. In other words, the deviations of the base end positions 200a, 201a and the end positions 200b, 201b described above can be reduced without compromising the strength or ease of assembly of the first pen tip member 16. That is, these deviations do not become too large, and the drawn double line can be made into a desirable shape.

[0120] In the embodiment described above, the second pen tip member 17 and the ink absorber (second ink absorber 7) that supplies ink to the pen tip member 100, both located on opposite sides of the applicator 1, are the same. Therefore, with the applicator 1 of this embodiment, it is possible to draw lines of different shapes using the same ink.

[0121] In the embodiment described above, the first ink impregnated in the first ink-absorbing body 6 and the second ink impregnated in the second ink-absorbing body 7 were different inks, but the present invention is not limited thereto. For example, it is also conceivable that the first ink and the second ink be the same ink.

[0122] In the embodiments described above, the first ink-absorbing body 6 and the second ink-absorbing body 7 differ in both length and thickness, but the present invention is not limited to this. For example, a structure in which only one of the length or thickness differs may be used.

[0123] In the embodiment described above, the first ink absorber 6 is thicker and shorter than the second ink absorber 7, but the present invention is not limited thereto. For example, the first ink absorber 6 may be thinner than the second ink absorber 7, or thicker than the second ink absorber 7. These may be appropriately changed depending on the shape of the first pen tip portion 3 and the second pen tip portion 4 and the type of ink (the amount of coating liquid applied in each assumed coating body).

[0124] In the embodiment described above, the thick shaft portion 23 on the pen tip side has four side portions consisting of a first side portion 31, a second side portion 32, a third side portion 33, and a fourth side portion 34. However, the present invention is not limited thereto. For example, the tip portion of the first pen tip may have an outer circumference formed by one curved surface (an arc-shaped curved surface) and one flat surface when viewed from the tip side in a plan view. In other words, it may have two side portions.

[0125] In the above-described embodiment, the structure has two coating liquid absorbers, consisting of a first ink absorber 6 and a second ink absorber 7. However, the present invention is not limited to this, and for example, a structure having three or more coating liquid absorbers is also conceivable. That is, a structure having three coating liquid absorbers is also conceivable, in which these three coating liquid absorbers separately supply coating liquid to each of the three coating members (first pen tip member 16, second pen tip member 17, and pen tip member 100).

[0126] The applicator 1 of the above embodiment is designed to draw the desired double line in a single stroke using the first pen tip portion 3, which is one of the two pen tip portions. However, the desired line (multiple line) formed by the applicator of the present invention is not limited to a double line, but may also consist of two or more lines, such as a triple line or a quadruple line. For example, if the desired line (multiple lines) is to be a double line, in addition to the double line described above, it is also possible to create a double line in which a gap is formed between the first and second lines. In this case, it is possible to position the first and second pen tips at intervals so that they do not come into contact with each other.

[0127] Furthermore, if the target line (multiple lines) is to be a double line, the following configuration can be considered.

[0128] For example, in the embodiment described above, the first pen tip member 16 and the second pen tip member 17 are positioned close together so as to be in contact with each other, and no gap is formed between the first line 200 and the second line 201. However, as shown in Figure 25(a), the first pen tip member 800 and the second pen tip member 801 may be positioned at a distance from each other so as not to be in contact with each other, and a gap may be formed between the first line 803 and the second line 804. Furthermore, in the embodiment described above, the first pen tip member 16 is a sintered core and the second pen tip member 17 is a plastic tip. However, as shown in Figure 25(b), it is conceivable that both the first pen tip member 805 and the second pen tip member 806 be sintered cores with different thicknesses (sizes). In this case, for example, the first pen tip member 805 may be thicker than the second pen tip member 806 (the area of ​​the cross-section at a predetermined position in the longitudinal direction may be larger). In this case, it becomes possible to draw a double line in a single stroke, including a thick first line 808 formed by the first pen tip member 805 and a thin second line 809 formed by the second pen tip member 806. In this case as well, there may or may not be a gap between the first and second lines. In other words, the first pen tip member and the second pen tip member may be placed close together so as to be in contact with each other, or they may be placed at positions spaced apart so as not to be in contact with each other. Furthermore, as shown in the upper right diagram of Figure 25(b), the first pen tip member 805 and the second pen tip member 806 may both be formed in a substantially rectangular parallelepiped shape. Also, as shown in the lower right diagram of Figure 25(b), the first pen tip member 805a and the second pen tip member 806a may have a shape in which the tip portion is diagonally cut off from a substantially rectangular parallelepiped member, so that an inclined surface is formed at the tip portion.

[0129] Next, if the target line (multiple lines) is to be a triple line, the following configuration can be considered.

[0130] For example, as shown in Figure 26(a), the first pen tip member 812 can be made into a sintered body with a bifurcated tip. In this case, the first pen tip member 812 and the second pen tip member 813 are positioned spaced apart so that they do not come into contact with each other. This makes it possible to draw a triple line, which includes two lines 815a and 815b formed by the first pen tip member 812 and one line 816 formed by the second pen tip member 813. This triple line consists of three lines 815a, 815b, and 816 arranged at intervals from each other.

[0131] As another configuration, as shown in Figure 26(b), the first pen tip member 820 and the second pen tip member 821 may both be made of sintered bodies and arranged so that parts of them overlap when viewed from the side. In this case, the tip portions of both the first pen tip member 820 and the second pen tip member 821 may be formed to be approximately rectangular parallelepipeds. Also, as shown in the lower right of Figure 26(b), the tip portions of the first pen tip member 820a and the second pen tip member 821a may be approximately rectangular parallelepipeds with the area around the tip beveled. In this case, when the first pen tip member 820 and the second pen tip member 821 are brought into contact with the object to be coated and the applicator is slid, the first line 824 formed by the first pen tip member 820 and the second line 825 formed by the second pen tip member 821 partially overlap. Therefore, if the coating liquid supplied to the first pen tip member 820 and the coating liquid supplied to the second pen tip member 821 are the same, it will take the shape of a single thick line, but the overlapping portion located in the center in the width direction of the line (the portion indicated by reference numeral 827, the overlapping region) will be the part with a higher concentration of coating liquid, and the parts on both sides of it will be the parts with a lower concentration of coating liquid. In other words, it becomes possible to draw a triple line in a single stroke, with a thin part of coating liquid (single region), a high part of coating liquid (overlapping region), and a thin part of coating liquid (single region) lined up from one side in the width direction.

[0132] As another configuration, as shown in Figure 26(c), the first pen tip member 831 may be a roughly rectangular parallelepiped sintered body having two long sides and two short sides when viewed from the pen tip side. In this case, a receiving groove 834 for accommodating a part of the second pen tip member 832 may be formed in a part of the side wall on one of the long sides of the first pen tip member 831, and the pen tip side end of the receiving groove 834 may be near the center in the longitudinal direction of one of the long sides. In this case, it becomes possible to draw a triple line in a single stroke, where the line 841a formed by a part of the first pen tip member 831, the line 842 formed by the second pen tip member, and the line 841b formed by another part of the first pen tip member 831 are aligned without any gaps.

[0133] Furthermore, if the target line (multiple lines) is to be a quadruple line, the following configuration can be considered. In other words, as shown in Figure 27(a), both the first pen tip member 850 and the second pen tip member 851 are sintered bodies with bifurcated tips. The first pen tip member 850 and the second pen tip member 851 are positioned spaced apart so that they do not touch each other. This makes it possible to draw four lines in a single stroke, with the two lines 853a, 853b formed by the first pen tip member 850 and the two lines 854a, 854b formed by the second pen tip member 851, each spaced apart.

[0134] As yet another configuration, as shown in Figure 27(b), the first pen tip member 860 may be a sintered body with a three-pronged tip. That is, the shape of the first pen tip member 860 may have three peaks and two valleys when viewed from the side. A receiving groove 863 for accommodating a part of the second pen tip member 861 may be formed in the first pen tip member 860, and the pen tip end of this receiving groove 863 may be positioned in one of the valleys of the first pen tip member 860. That is, the pen tip portion of the second pen tip member 861 may be formed between the two peaks of the first pen tip member 860. In this case, it becomes possible to draw a quadruple line in a single stroke, consisting of a first line 870a formed by the first peak of the first pen tip member 860, a second line 870b formed by the second peak, a third line 871 formed by the second pen tip member 861, and a fourth line 870c formed by the third peak. At this time, the four lines are arranged with gaps between them. [Explanation of Symbols]

[0135] 1. Applicator 2 Main body cylinder (shaft cylinder) 3. First pen tip section (coating section, one-sided coating section) 4. Second pen tip section (coating section, other side coating section) 6. First Ink Absorbent (Coating Liquid Absorbent, First Coating Liquid Absorbent) 7. Second ink absorbent (coating liquid absorbent, second coating liquid absorbent) 16,800,805,805a,812,820,820a,831,850,860 First pen tip component (first coating body part, coating body) 17, 801, 806, 806a, 813, 821, 821a, 832, 851, 861 Second pen tip component (second coating body part, coating body) 100 Pen tip component (third coating part, coating) A. Object to be coated

Claims

1. An applicator having a shaft and an applicator portion, which applies an applicator liquid by bringing the applicator portion into contact with the object to be coated, At least one of the coating portions is formed including a first coating portion and a second coating portion arranged side by side, It comprises a first coating liquid absorbent body that absorbs the coating liquid applied by the first coating body portion, and a second coating liquid absorbent body that absorbs the coating liquid applied by the second coating body portion, The first coating portion is wider than the second coating portion. The first coating liquid absorbent and the second coating liquid absorbent differ in length and / or thickness. The first coating liquid absorbent is capable of absorbing more coating liquid than the second coating liquid absorbent. The coating device is characterized in that the second coating liquid absorbent is housed in a state in which it is deformed into a shape in which a part of it is bent and stretched.

2. The coating device according to claim 1, characterized in that the first coating liquid absorbent is housed in a state pressed against the shaft by the second coating liquid absorbent.

3. An applicator having a shaft and an applicator portion, which applies an applicator liquid by bringing the applicator portion into contact with the object to be coated, At least one of the coating portions is formed including a first coating portion and a second coating portion arranged side by side, It comprises a first coating liquid absorbent body that absorbs the coating liquid applied by the first coating body portion, and a second coating liquid absorbent body that absorbs the coating liquid applied by the second coating body portion, The first coating portion is wider than the second coating portion. The first coating liquid absorbent and the second coating liquid absorbent differ in length and / or thickness. The first coating liquid absorbent is capable of absorbing more coating liquid than the second coating liquid absorbent. It has a core member, and a part of the second coating liquid absorbent is arranged inside the core member. At least a portion of the second coating liquid absorbent body extends toward the center of the shaft as it approaches one end of the shaft in the longitudinal direction, The coating device is characterized in that the portion of the second coating liquid absorbent body that is arranged inside the core member is positioned towards the center of the shaft cylinder.

4. The coating device according to any one of claims 1 to 3, characterized in that at least one of the first coating liquid absorbent and the second coating liquid absorbent is housed in the shaft in a deformed state.

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