JP2010228119A - Direct liquid type writing implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a direct liquid type writing implement having no possibility of making the writing line become blurred even when writing is continuously performed on such a vertical writing face as a whiteboard. <P>SOLUTION: The direct liquid type writing implement includes; a pen core 1; an ink occlusion body 2 connected to the back end of the pen core 1; a first ink tank 3 arranged in front of the ink occlusion body 2 and storing the ink; and a plurality of ink feeding pipes 3b for connecting between the first ink tank 3 and the ink occlusion body 2. In the direct liquid type writing implement, respective back ends of the ink feeding pipes 3b are opened, and the respective back ends of the ink feeding pipes 3b and the back end of the pen core 1 are connected with a high density part of the ink occlusion body 2. A second ink tank 6 for storing the ink is arranged behind the first ink tank 3, and an ink guiding part connected between the first ink tank 3 and the second ink tank 6 to be able to move the ink therebetween, is equipped, and the front end of the ink guiding part is positioned ahead more than the respective front ends of the ink feeding pipes 3b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a direct liquid writing instrument in which ink is contained in an ink tank and an ink occlusion body is interposed between the ink tank and a pen core. In the present invention, “front” and “front end” indicate the pen core side, and “rear” and “rear end” indicate the container side.

A direct liquid writing instrument in which ink is contained in an ink tank and an ink occlusion body is interposed between the ink tank and a pen core is already known (for example, see Patent Document 1).
In Patent Document 1, a pen tip, an ink occlusion body connected to the rear end of the pen nib, an ink tank that is disposed behind the ink occlusion body and directly stores ink, the ink tank, and the ink tank A direct liquid type writing instrument comprising a communication pipe connecting between the ink storage body, comprising a plurality of the communication pipes, each front end of the communication pipe being opened, and each front end of the communication pipe being an ink storage There is a description of a direct liquid writing instrument characterized by being positioned inside the body.
JP 2006-240281 A

In Patent Document 1, there is no possibility that ink in the ink tank leaks out from the pen tip side, and air and ink are replaced quickly at the time of initial ink discharge, and writing can be performed in a short time. Even if there is no ink supply from the ink tank such as the description that can be done, the pen tip upward state, the horizontal state of the writing instrument body, etc., the direct liquid type that can be sufficiently written by the ink impregnated inside the ink occlusion body There is a writing instrument.
However, especially when writing continuously on a vertical writing surface such as a whiteboard, the pen core upward state will be maintained for a long time, and after ink in the ink occlusion body is consumed, writing There was a problem that the lines were faint.

A direct liquid writing instrument according to a first aspect of the present invention completed in order to solve the above-described problems is provided with a pen core, an ink storage body connected to a rear end of the pen core, and a front part of the ink storage body. A first ink tank containing ink, and an ink supply pipe connecting between the first ink tank and the ink occlusion body, comprising a plurality of the ink supply pipes, A direct liquid writing instrument in which an end is opened, the ink occlusion body includes a high density portion and a low density portion, and the rear end of each of the ink supply pipes and the rear end of the pen core are connected to the high density portion. An ink guiding portion is disposed behind the first ink tank, the second ink tank containing the ink, and connected between the first ink tank and the second ink tank so that the ink can move. A front end of the ink guide Characterized in that the from the front end of each of the ink supply pipe was located in front.
According to a second aspect of the present invention, there is provided a direct liquid type writing instrument according to the first aspect, wherein a plurality of the ink guiding portions are provided.
According to a third aspect of the present invention, when the rear end of each ink supply pipe is inserted from the front end of the ink storage body, the rear end of each ink supply pipe presses and compresses the inside of the ink storage body backward. By doing so, the high-density portion is formed in the vicinity of the rear end of each of the ink supply pipes. The direct liquid writing instrument according to the first invention or the second invention.

The present invention, in particular, for a vertical writing surface such as a whiteboard, even when writing continuously with the pen core facing upward, the ink in the first ink tank continues to be supplied to the ink occlusion body, The writing line is not faded until all the ink in the first ink tank is consumed.
Further, even when the pen core is faced downward and no ink is supplied from the first ink tank, writing can be performed with the ink impregnated inside the ink occlusion body.
In addition, since the ink supply from the first ink tank is stopped when the pen core is facing downward, ink leakage from the pen tip with the pen core facing downward, which has been a problem with conventional liquid writing instruments, has been prevented. can do. In the state where the pen core is upward, the ink is supplied downward, so that no ink leaks from the pen tip.
Further, when the pen core is turned downward, ink is supplied from the second ink tank to the first ink tank, so that ink consumed by writing can be replenished. Further, if the second ink tank can be replaced with a cartridge type, the ink can be reused by replacing the ink even after all the ink in the first and second ink tanks is consumed.
In addition, since the front end of the ink guiding portion is positioned in front of each front end of the ink supply pipe, it is possible to prevent the ink moved to the first ink tank from returning to the second ink tank.

Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, a first embodiment of the present invention will be described in detail based on FIG. 1 and FIG.
The pen core 1 may be a fibrous pen core made of, for example, acrylic fiber, polyester fiber, nylon fiber, or vinylon fiber, which is hardened with resin or sintered.

The ink occlusion body 2 only needs to have a capillary gap. For example, a fiber bundle resin processed body, a fiber bundle heat fusion processed body, a felt processed body, a felt needle punch processed body, and a porous synthetic resin Examples thereof include porous materials such as foams, and synthetic resin extrusions having an ink guide path in the axial direction. The material can be a synthetic fiber resin such as acrylic fiber or polyester fiber. Further, the ink occlusion body 2 may be configured to have an outer skin made of a synthetic resin film or the like on its outer peripheral surface.
The ink occlusion body 2 includes a high density portion 2a having a high density and a low density portion 2b having a low density. The setting of the high density portion 2a and the low density portion 2b is based on the method of adjusting the fiber amount when manufacturing the ink occlusion body 2 or the volume of the ink occlusion body 2 when the fiber amount is the same. A method of setting by reducing, a method of forming the ink occluding body 2 by contacting two parts of the ink occluding body forming the high density portion 2a and the ink occluding body forming the low density portion 2b, etc. are conceivable. . Here, the method of partially reducing the volume of the ink occlusion body 2 is, for example, a method of forming a part of the outer peripheral surface of the ink occlusion body by pressing and compressing it radially inward, or from the front end or the rear end. A method of pressing and compressing inward is conceivable.

The first ink tank 3 includes a pen core guiding tube 3a penetrating in the front-rear direction through a substantially center of a bottomed cylindrical body having an open front end, and an ink supply tube 3b is disposed rearward from the bottom of the first ink tank 3. A plurality of ink supply pipes 3b pass through the bottom. The ink is accommodated in the cylindrical body 3c.
The cross-sectional shape of the outer peripheral surface and inner peripheral surface of the ink supply tube 3b may be any of, for example, a circle, an ellipse, or a polygon such as a triangle or a quadrangle. Further, the number of the ink supply pipes 3b may be plural (that is, two or more), and examples thereof include 2, 3, 4, 5, or 6. The rear ends of the ink supply pipes 3b are preferably located at equal intervals on the same circumference with the pen core 1 as the center. The rear end of each of the ink supply pipes 3b may be opened rearward in the front-rear direction or may be opened outward in the radial direction. Examples of the shape of each rear end of the ink supply tube 3b include an inclined cut surface, a vertical surface, a conical surface, and a convex curved surface.

  The pen core holder 4 includes a pen core fitting portion that penetrates substantially the center of the bottomed cylindrical body whose rear end is open in the front-rear direction. The rear end opening of the pen core holder 4 is fitted into the front end opening of the first ink tank 3. Here, the pen core holder 4 and the first ink tank 3 are watertightly fitted. The pen core 1 is fitted into the pen core fitting portion.

  The container 5 is a bottomed cylindrical body having an open front end, and the front end of the container 5 and the rear end of the pen core holder 4 are fitted and fixed. The fitting method may be screw fitting. The ink occlusion body 2 is accommodated approximately in front of the container 5.

  A second ink tank 6 is accommodated behind the ink occlusion body 2 accommodated in the container 5. The second ink tank 6 is a bottomed cylinder having an open front end, and a lid 7 is fitted to the front end. An ink guiding portion 8 is provided on the front end surface of the lid body 7. Ink is stored in the second ink tank 6.

The ink guide 8 is constituted by a guide tube 81. The cross-sectional shape of the outer peripheral surface and inner peripheral surface of the guide tube 81 may be any of, for example, a circle, an ellipse, or a polygon such as a triangle or a quadrangle. The guide tube 81 is fitted into the bottom of the first ink tank, and the front end of the guide tube 81 is disposed in the cylindrical body 3c. Here, the insertion means insertion and fitting, and the bottom of the first ink tank and the guide tube 81 are water-tightly fitted.
Further, the front end of the guide tube 81 is positioned in front of each front end of the ink supply tube 3b.

The number of guide tubes 81 may be one or more. In the case of one (not shown), the diameter of the guide tube 81 needs to be relatively large in order to perform replacement between ink and air. The size of the diameter is calculated from the surface tension of the ink used. The larger the surface tension of the ink, the larger the diameter.
On the other hand, when the number of the guide pipes 81 is plural, for example, the air moves from one and the ink moves from the other guide pipe, so that the ink is transferred from the second ink tank to the first ink tank. The movement can be performed smoothly.

Here, plastics made of synthetic resin can be used as materials for the first ink tank 3, the second ink tank 6, the pen core holder 4, the container 5, the lid 7, and the guide tube 81.
Further, as the ink of the present invention, water-based, oil-based, dye-based and pigment-based inks can be appropriately employed.

  In the first embodiment of the present invention, the lid 7 is fitted in the front end of the second ink tank containing the ink, and is stored in the container 5, and the occlusion body 2 is accommodated in front of the lid 7. . Thereafter, the first ink tank is fitted into the front end opening of the container 5 with the guide tube 81 provided on the front end face of the lid 7 being fitted into the bottom of the first ink tank. Then, the pen core holder 4 to which the pen core 1 is attached is fitted into the front end opening of the first ink tank and is fitted and fixed to the container 5. Although not shown, the pen core holder 4 is fitted with a cap. Here, the first ink tank may contain ink in advance or may not contain ink.

The first embodiment of the present invention has the above-described configuration, and the operation thereof will be described in detail next.
Each of the ink supply pipes 3b has a function of supplying the ink in the first ink tank 3 into the ink storage body 2 and a function of supplying outside air into the first ink tank 3. When supplying the ink in the first ink tank 3 to the ink occlusion body 2, when the pen core 1 is turned upward, the ink in the first ink tank 3 passes through at least one ink supply pipe 3b by gravity, It is supplied to the high density portion 2 a of the ink occlusion body 2. At the same time, the outside air is taken into the first ink tank 3 through the other ink supply pipe 3b. That is, in the case of n ink supply pipes 3b (n is an integer of 2 or more), one or more and (n-1) or less ink supply pipes 3b supply ink, and the other remaining ink supply pipes 3b. Supplies outside air.
Therefore, even when writing continuously with the pen core facing upward, since ink is continuously supplied from the ink supply pipe 3b to the ink occlusion body 2, writing is performed until all the ink in the first ink tank 3 is consumed. The line will not fade.

  When the amount of ink impregnated in the high density portion 2a of the ink occlusion body 2 reaches a certain amount, the rear end opening of the other ink supply pipe 3b that has taken in the outside air temporarily enters a liquid seal state with the impregnated ink. And the supply of outside air into the first ink tank 3 is stopped. At the same time, the ink supply from the first ink tank 3 to the ink occlusion body 2 by the ink supply pipe 3b that has been supplying the ink is also stopped, and as a result, each rear end opening of the ink supply pipe 3b is liquid-sealed. The state is temporarily closed and ink outflow from the first ink tank 3 and air inflow into the first ink tank 3 (that is, replacement of ink and air) are stopped.

  The ink occlusion body 2 sets the density of the portion near the rear end of each ink supply tube 3b (high density portion 2a) and the density of the portion other than the vicinity of each rear end of the ink supply tube 3b. Part (low density part 2b). Therefore, the ink in the ink occlusion body 2 can be preferentially impregnated in the high density portion 2a rather than the low density portion 2b. Thereby, each rear end opening of the ink supply pipe 3b can be reliably liquid-sealed with the impregnating ink. As a result, when the pressure in the first ink tank 3 is reduced due to a temperature drop or the like, the ink impregnated in the ink storage body 2 does not remain in the ink storage body 2, and the height of the ink storage body 2 is increased. The ink is appropriately returned from the density portion 2a to the first ink tank 3 through the ink supply pipe 3b.

  Since the rear end of each of the ink supply pipes 3b is connected to the high density portion 2a of the ink storage body 2, all the rear end openings of each of the ink supply pipes 3b are placed inside the ink storage body 2. It can be easily closed by a liquid seal of the impregnated ink. As a result, excessive ink is not supplied from the first ink tank 3 to the ink occlusion body 2, and there is no possibility that the ink leaks outside from the pen core 1 side.

Ink can be supplied to the first ink tank 3 from the second ink tank 6. When the pen core is turned downward, the ink in the second ink tank 6 moves into the first ink tank 3 and the pen core holder 4 via the ink guide 8. Thereafter, when the pen core is turned upward, the ink is stored in the first ink tank 3. Here, since the front end of the guide tube 81 is located in front of each front end of the ink supply tube 3b, when the pen core is turned upward, the ink stored in the first ink tank 3 is There is no return to the second ink tank 6 and a predetermined amount of ink is stored.
The operation in which the ink accommodated in the first ink tank 3 is supplied to the ink occlusion body 2 via the ink supply pipe 3b is as described above.

(Second Embodiment)
Next, the second embodiment will be described in detail with reference to FIGS. Here, only differences from the above-described embodiment will be described.
A guide groove 82 is provided on the outer peripheral side surface of the first ink tank 31, and a plurality of ink supply pipes 31b are provided from the bottom toward the rear. The number of the guide grooves 82 may be one or plural, and is provided toward the front-rear direction of the outer peripheral side surface of the first ink tank 31.
The lid 71 is fitted to the front end of the second ink tank 61 at the rear thereof, as in the first embodiment. The front of the lid 71 has a substantially double cylinder structure, and the ink storage body 21 is accommodated in the inner cylinder.
An inflow portion 71a is provided between the inner cylinder and the outer cylinder so that the ink in the second ink tank 61 can flow.
The rear end of the first ink tank 31 is fitted to the front end of the inner cylinder, and the outer peripheral surface of the first ink tank 31 and the inner peripheral surface of the outer cylinder of the lid 71 are slid. Make contact. Accordingly, the guide groove 82 functions as the ink guide portion 8.
The front end of the guide groove 82 is positioned in front of each front end of the ink supply pipe 31b.
Here, when the number of the guide groove 82 is one (not shown), the diameter of the guide groove 82 needs to be relatively large in order to perform replacement between ink and air. The size of the diameter is calculated from the surface tension of the ink used. The larger the surface tension of the ink, the larger the diameter.
On the other hand, when the number of the guide grooves 82 is plural, for example, air moves from one and ink moves from the other guide grooves, so that the ink from the second ink tank to the first ink tank is transferred. The movement can be performed smoothly.

  In the second embodiment of the present invention, the lid 71 is fitted to the front end of the second ink tank 61 containing the ink, and the ink occlusion body 21 is housed from the front in the lid 71. The rear end of the tank 31 is fitted to the front end of the cylinder inside the lid 71. Thereafter, the lid 71 is inserted into the container 51, and the pen core holder 41 with the pen core 11 attached is fitted into the cylindrical front end opening on the outside of the lid 71.

Ink can be supplied to the first ink tank 31 from the second ink tank 61. When the pen core is directed downward, the ink in the second ink tank 61 moves into the first ink tank 31 and the pen core holder 41 via the inflow portion 71a and the guide groove 82. Thereafter, when the pen core is turned upward, the ink is stored in the first ink tank 31. Here, since the front end of the guide groove 82 is positioned in front of each front end of the ink supply pipe 31b, when the pen core is turned upward, the ink stored in the first ink tank 31 is There is no return to the second ink tank 61, and a predetermined amount of ink is stored.
The operation in which the ink stored in the first ink tank 31 is supplied to the ink storage body 21 via the ink supply pipe 31b is as described in the first embodiment.

(Third embodiment)
Next, the third embodiment will be described in detail with reference to FIGS. Here, only differences from the above-described embodiment will be described.
The first ink tank 32 is a bottomed cylindrical body having an open front end, and a collar portion 32a is provided on the outer peripheral surface of the front end. The flange portion 32a is provided with a guide hole 83 penetrating in the front-rear direction. The number of guide holes 83 may be one or more. The guide hole 83 functions as the ink guide portion 8.
When the number of the guide holes 83 is one (not shown), the diameter of the guide holes 83 needs to be relatively large in order to replace ink and air. The size of the diameter is calculated from the surface tension of the ink used. The larger the surface tension of the ink, the larger the diameter.
On the other hand, when the number of the guide holes 83 is plural, for example, air moves from one and ink moves from another tube, so that the ink from the second ink tank to the first ink tank is transferred. The movement can be performed smoothly.
The pen core holder 42 has a pen core fitted in a cylindrical body that is open at both ends, and has a hook-shaped portion 42a at the rear end. A plurality of ink supply pipes 42b are provided from the rear end of the bowl-shaped part 42a to the rear, and the ink supply pipe 42b penetrates the bowl-shaped part 42a.

  In the third embodiment of the present invention, a pen core holder 42 to which the pen core 12 is attached is inserted from the ink supply pipe 42b side in front of the first ink tank 32 in which the ink storage body 22 is stored. At this time, the front end of the guide hole 83 is inserted so as to be positioned in front of each front end of the ink supply pipe 42b. The ink is accommodated in a cylindrical body 32c formed between the flange portion 42a and the flange portion 32a. A container 52 is fitted to the pen core holder 42 and the collar 32a, and a second ink tank 62 is fitted to the rear end of the collar 32a.

Ink can be supplied to the first ink tank 32 from the second ink tank 62. When the pen core is turned downward, the ink in the second ink tank 62 moves into the first ink tank 32 and the container 52 through the guide hole 83. Thereafter, when the pen core is turned upward, the ink is stored in the first ink tank 32. Here, since the front end of the guide hole 83 is located in front of each front end of the ink supply pipe 42b, when the pen core is turned upward, the ink stored in the first ink tank 32 is There is no return to the second ink tank 62, and a predetermined amount of ink is stored.
The operation of supplying the ink stored in the first ink tank 32 to the ink storage body 22 through the ink supply pipe 42b is as described in the first embodiment.

(Fourth embodiment)
Next, a fourth embodiment will be described in detail based on FIGS. Here, only differences from the above-described embodiment will be described.
The first ink tank 33 includes a pen core insertion portion 33a penetrating in the front-rear direction through the substantially center of the bottomed cylindrical body whose rear end is open, and a plurality of ink supply pipes 33b are provided from the bottom rear end toward the rear. The ink supply pipe 33b passes through the bottom. The bottom portion is disposed at a position descending rearward from the front end of the cylindrical body 33c. A cylindrical body 33e is formed between the bottom end of the cylindrical body 33c.
The first ink tank 33 is inserted into the container 53. The container 53 is a cylindrical body opened at both ends, and has a stepped portion 53a on the inner peripheral surface. A guide slit 84 is provided in the stepped portion 53a. The number of the guide slits 84 may be one or more. The front end of the cylindrical body 33c abuts on the rear end of the stepped portion 53a. The guide slit 84 functions as the ink guide portion 8.
Here, when the number of the guide slits 84 is one (not shown), the width of the guide slits 84 needs to be relatively large in order to replace ink and air. The width is calculated from the surface tension of the ink used. The larger the surface tension of the ink, the larger the width.
On the other hand, when the number of the guide slits 84 is plural, for example, air moves from one and the ink moves from other guide slits, so that the ink from the second ink tank to the first ink tank can be transferred. The movement can be performed smoothly.
It is designed so that a gap 33d is formed between the outer peripheral surface of the cylinder 33c and the container 53.
A lid 73 is fitted to the rear end of the first ink tank 33. A second ink tank 63 is fitted to the rear end of the lid 73. The outer peripheral surface of the rear end of the lid 73 is watertightly fitted to the inner peripheral surface of the container 53. An ink inflow portion 73a is provided at a substantially central portion of the lid 73 so that the ink in the second ink tank 63 can flow into the gap 33d. The ink that has flowed into the gap 33d can flow into the cylindrical body 33e only from the guide slit 84.

  In the fourth embodiment of the present invention, the ink storage body 23 is accommodated from the rear end of the first ink tank 33 with the pen core 13 attached to the front, and the lid 73 is fitted to the rear end. The front end of the second ink tank 63 containing ink is fitted to the rear end of the lid 73. Thereafter, the first ink tank 33 is inserted from behind the container 53.

Ink can be supplied to the first ink tank 33 from the second ink tank 63. When the pen core is directed downward, the ink in the second ink tank 63 flows into the gap 33d from the ink inflow portion 73a, and the cylindrical body 33e and the container 53 in the first ink tank 33 through the guide slit 84. Move in. Thereafter, when the pen core is turned upward, the ink is accommodated in the cylindrical body 33e. Here, since the front end of the cylindrical body 33c is positioned in front of each front end of the ink supply pipe 33b, when the pen core is faced upward, the ink stored in the first ink tank 33 is There is no return to the two ink tank 63, and a predetermined amount of ink is stored.
The operation in which the ink stored in the first ink tank 33 is supplied to the ink storage body 23 via the ink supply pipe 33b is as described in the first embodiment.

(Fifth embodiment)
Next, the fifth embodiment will be described in detail. Here, only differences from the above-described embodiment will be described.
In the present embodiment, when the rear end of each of the ink supply pipes 3b is inserted from the front end of the ink storage body 2, the rear ends of the ink supply pipes 3b face the interior of the ink storage body 2 backward. By pressing and compressing, the high density portion 2a is formed inside the ink occlusion body 2 in the vicinity of the rear end of each ink supply tube 3b.
In this case, a means for setting the high density portion 2a and the low density portion 2b in the ink occlusion body 2 is not necessary and is useful. That is, in the present invention, since it is an essential configuration to insert the ink supply tube 3b into the ink occlusion body 2, this configuration is useful in that the configuration can be used together as a means for forming the high density portion 2a. Moreover, it is useful also in that the occurrence of poor connection between each rear end of the ink supply pipe 3b and the high density portion 2a can be suppressed.
The relationship between the ink occlusion body and the ink supply pipe is the same in the second to fourth embodiments.

  The present invention has been described above by the embodiments, but the present invention is not limited to these embodiments, and various improvements and modifications can be made without departing from the scope of the present invention.

Front center longitudinal sectional view (left figure) and right side center longitudinal sectional view (right figure) of the first embodiment The principal part perspective view of 1st Embodiment Front center longitudinal sectional view (left figure) and right side center longitudinal sectional view (right figure) of the second embodiment The principal part perspective view of 2nd Embodiment Front center longitudinal sectional view (left diagram) and right side center longitudinal sectional view (right diagram) of the third embodiment The principal part perspective view of 3rd Embodiment Front center longitudinal sectional view (left diagram) and right side center longitudinal sectional view (right diagram) of the fourth embodiment The principal part perspective view of 4th Embodiment

DESCRIPTION OF SYMBOLS 1 Pen core 2 Ink occlusion body 2a High density part 2b Low density part 3 1st ink tank 3a Pen core guide tube 3b Ink supply pipe 3c Inside of cylinder 4 Pen core holder 5 Container 6 2nd ink tank 7 Cover body 8 Ink guide Part 81 Guide tube 11 Pen core 21 Ink occlusion body 31 First ink tank
31b ink supply pipe 41 pen core holder 51 container 61 second ink tank 71 lid 71a inflow portion 82 guide groove 12 pen core 22 ink occlusion body 32 first ink tank 32a collar portion 32c inside the cylinder 42 pen core holder 42a bowl shape Part 42b ink supply pipe
52 Container 62 2nd ink tank 83 Guide hole 13 Pen core 23 Ink occlusion body 33 1st ink tank 33a Pen core insertion part
33b ink supply pipe 33c cylinder 33d gap 33e cylinder interior 53 container 53a step 63 second ink tank 73 lid 73a ink inflow section 84 guide slit

Claims (3)

A pen core, an ink occluding body connected to the rear end of the pen wick, a first ink tank disposed in front of the ink occluding body and containing ink, the first ink tank and the ink occluding body, A plurality of the ink supply pipes, the rear ends of the ink supply pipes are opened, and the ink occlusion body includes a high-density part and a low-density part, A direct liquid writing instrument in which the rear end of each of the ink supply pipes and the rear end of the pen core are connected to a density part,
A second ink tank for containing ink is disposed behind the first ink tank, and an ink guiding section is provided to connect the first ink tank and the second ink tank so that the ink can move.
A direct liquid type writing instrument, wherein the front end of the ink guiding portion is positioned in front of each front end of the ink supply pipe.   2. The direct liquid writing instrument according to claim 1, comprising a plurality of the ink guiding portions.   When the rear end of each of the ink supply pipes is inserted from the front end of the ink storage body, the rear end of each of the ink supply pipes presses and compresses the inside of the ink storage body backward, whereby the ink supply pipe 3. The direct liquid writing instrument according to claim 1, wherein the high density portion is formed in the vicinity of the rear end of each of the first and second liquid writing instruments.

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