JP2009178900A - Writing utensil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing utensil which can prevent a user from forgetting a stirring operation before use for writing, without great damage to appearance of the writing utensil, and further, by allowing the user to easily recognize the requirement of stirring, and further, has no risk that ink in an ink tank for writing use is deteriorated by being exposed to sunlight. <P>SOLUTION: The writing utensil 1 includes: a first ink tank 3; a second ink tank 4; and a pen nib 2. In the first ink tank 3, a first ink 31 containing a sedimentary component such as a pigment and a stirring member 32 for stirring the first ink 31, are stored. The inside of the first ink tank 3 and the inside of the second ink tank 4 are in a non-communicated state. The second ink 41 in the second ink tank 4 can not be discharged to the outside. The inside of the first ink tank 3 can not be recognized from the outside. The inside of the second ink tank 4 can not be recognized from the outside. The volume of the second ink tank 4 is set so as to be smaller than that of the first ink tank 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a writing instrument. Specifically, the present invention relates to a writing instrument in which ink and an agitating member for agitating the ink are accommodated in an ink tank.

Conventionally, in this type of writing instrument, a writing instrument in which ink and a stirring member for redispersing the components of the ink are accommodated in an ink tank is widely known (for example, Patent Document 1). Further, Patent Document 1 describes a configuration in which an ink tank is formed of a transparent material so that internal ink can be visually recognized.

JP-A-9-234987

In the conventional writing instrument, when the inside of the ink tank is not visible from the outside, the stirring operation tends to be forgotten before the writing is used, and in this case, there is a possibility that proper ink ejection cannot be obtained. Further, when the inside of the ink tank is configured to be visible from the outside, the sedimentation state of the ink component in the large-capacity ink tank is visually recognized, and the appearance (appearance) of the writing instrument may be impaired. There is a possibility that the ink component is exposed to sunlight and deteriorates (for example, a decrease in coloring property).

The present invention solves the above-mentioned conventional problems, the appearance of the writing instrument is not greatly impaired, and the necessity of stirring is easily recognized, and the stirring operation is forgotten before writing. It is intended to provide a writing instrument in which ink in an ink tank for writing use is not exposed to sunlight and does not deteriorate. In the present invention, “front” refers to the pen tip side, and “rear” refers to the opposite side.

[1] The first invention of the present application is a first ink tank in which a first ink 31 containing a sedimenting component such as a pigment and a stirring member 32 for stirring the first ink 31 are housed. 3, a pen tip 2 connected to the first ink tank 3 and capable of discharging the first ink 31, and a second ink containing therein a second ink 41 containing a sedimenting component such as a pigment A tank 4, wherein the first ink tank 3 and the second ink tank 4 are configured in a non-communication state, and the second ink 41 in the second ink tank 4 is ejected to the outside. The first ink tank 3 is configured to be invisible from the outside, the second ink tank 4 is configured to be visible from the outside, and the capacity of the second ink tank 4 is It was set smaller than the capacity of the first ink tank 3 (invoice 1) and the requirements. (See FIGS. 1 to 4)

The writing instrument 1 of the first invention is configured such that the inside of the first ink tank 3 is invisible from the outside, and the capacity of the second ink tank 4 is set smaller than the capacity of the first ink tank 3. As a result, the sedimentation state of the ink component in the large-capacity first ink tank 3 cannot be visually recognized from the outside, so that the appearance of the writing instrument is not greatly impaired.

In addition, the writing instrument 1 of the first invention is configured such that the inside of the first ink tank 3 is invisible from the outside, so that the first ink 31 in the first ink tank 3 having a large capacity (that is, writing) There is no risk that the ink used will be exposed to sunlight.

In addition, the writing instrument 1 of the first invention is configured such that even if the inside of the first ink tank 3 is made invisible from the outside, the inside of the second ink tank 4 is visually recognized from outside before the writing is used. The sedimentation state of the second ink 41 can be confirmed, and the necessity of the stirring operation of the first ink 31 can be easily recognized. As a result, it is possible to prevent forgetting the stirring operation before writing.

Further, the writing instrument 1 of the first invention is configured so that the second ink 41 in the second ink tank 4 cannot be discharged to the outside, so that the second ink 41 is not consumed. The second ink 41 in the second ink tank 4 can be visually recognized until the ink in the ink tank 3 is completely consumed. Moreover, since the writing instrument 1 of the first invention does not use the second ink 41 for writing, there is no need to worry about deterioration of the second ink 41 due to sunlight. The second ink 41 in the second ink tank 4 is configured such that it cannot be discharged to the outside, for example, a configuration in which a pen tip or the like is not connected to the second ink tank 4. It is done.

[2] The second invention of the present application requires that, in the first invention, the first ink 31 and the second ink 41 are composed of the same component (claim 2).

In the writing instrument 1 of the second invention, the first ink 31 and the second ink 41 are composed of the same component, so that the first ink 31 that cannot be seen from the outside and the second ink 41 that can be seen from the outside. And the sedimentation state agree with each other. Thereby, the settling state of the settling component of the first ink 31 can be reliably grasped by visually checking the settling state of the settling component of the second ink 41.

[3] According to a third invention of the present application, in the first or second invention, the writing tool body 6 includes the pen tip 2 and the first ink tank 3, and the writing tool body 6 has a pen tip side. It is a requirement that the second ink tank 4 is provided at the closed end of the cap 5 that is detachably provided (Claim 3). (See Fig. 1 and Fig. 2)

In the writing instrument 1 according to the third aspect of the present invention, the second ink tank 4 is provided at the closed end of the cap 5 so that the second ink tank 4 can be easily received from the outside while being accommodated in a pen stand or a pocket of clothes. Visible to. Therefore, the necessity of stirring operation can be recognized easily and it can prevent forgetting stirring operation before writing.

[4] According to a fourth invention of the present application, in the first or second invention, the writing instrument body 6 includes the pen tip 2, the first ink tank 3, and the second ink tank 4. It is a requirement that the second ink tank 4 is provided behind the first ink tank 3 (Claim 4). (See Figs. 3 and 4)

When the writing instrument 1 of the fourth invention is provided with the second ink tank 4 behind the first ink tank 3 of the writing instrument body 6, when the pen tip side of the writing instrument body 6 is gripped, the second ink tank 4 is provided. The inside of the ink tank 4 can be easily visually confirmed. Therefore, the necessity of stirring operation can be recognized easily and it can prevent forgetting stirring operation before writing. Further, the writing instrument 1 of the fourth invention is provided with the second ink tank 4 behind the first ink tank 3 of the writing instrument body 6 so that the pen tip 2 and the first ink tank 3 can be easily provided. Can be connected to.

The writing instrument of the present invention does not greatly impair the appearance of the writing instrument, can easily recognize the necessity of stirring, can prevent forgetting the stirring operation before writing use, and for writing use There is no risk that the ink in the ink tank will be exposed to sunlight and deteriorate.

<First Embodiment>
A first embodiment of the present invention is shown in FIGS.
The writing instrument 1 according to the present embodiment mainly includes a writing instrument body 6 provided with a nib 2 and a first ink tank 3, and a cap 5 that is detachable on the nib side of the writing instrument body 6.

Writing instrument body The writing instrument body 6 includes a cylindrical shaft cylinder 7, a bottomed cylindrical first ink tank 3 connected to a front end opening of the shaft cylinder 7, and the first ink tank 3. It consists of a nib 2 attached to the front end opening and a friction body 8 attached to the rear end of the shaft cylinder 7.

First ink tank The first ink tank 3 is made of an opaque synthetic resin, and the inside of the first ink tank 3 cannot be seen from the outside. A first ink 31 and a stirring member 32 are accommodated in the first ink tank 3. The first ink 31 is made of thermochromic ink. The thermochromic ink is obtained by dispersing a microcapsule pigment encapsulating a reversible thermochromic composition in microcapsules (that is, a sedimenting component of the first ink 31) in a solvent such as water. As the thermochromic ink, a type that is decolored by heating from a colored state is adopted. The stirring member 32 is made of a metal spherical body. In addition, the structure which makes the inside of the 1st ink tank 3 invisible from the outside can mention the structure which covers the outer surface of the 1st ink tank 3 with an opaque member or an opaque layer other than the above, for example. .

The pen tip 2 is attached to the front end opening of the first ink tank 3 so as to be movable in the front-rear direction. Between the nib 2 and the first ink tank 3, a valve device that opens by pressing the nib 2 backward is provided. The nib 2 employs a rod-shaped resin processed body of fiber bundles. In addition to this, the nib 2 may be, for example, a ball-point pen tip, a heat-bonded processed body of fiber bundles, a felt processed body, a pipe-shaped pen body, a fountain pen type plate-shaped pen body having a slit at the tip, a brush pen body, Examples thereof include a porous foam of a synthetic resin and an extruded product of a synthetic resin having an axial ink guide path.

A friction body 8 made of an elastic material is attached to the rear end portion of the friction body barrel 7. The thermochromic handwriting obtained with the first ink 31 is rubbed by the friction body 8 and can be thermally discolored (discolored) by frictional heat generated by the friction.

-Cap A clip 51 projects from the outer surface of the side wall of the cap 5. A second ink tank 4 is fixed to the outer surface of the closed end of the cap 5.

Second ink tank A second ink 41 is accommodated in the second ink tank 4. The second ink 41 is composed of the same components as the first ink 31. The second ink tank 4 is made of a transparent material (for example, transparent synthetic resin) and protrudes to the outside from the outer surface of the closed end of the cap. Thereby, the 2nd ink 41 in the 2nd ink tank 4 can be visually recognized from the exterior. The capacity of the second ink tank 4 is set smaller than the capacity of the first ink tank 3. The second ink tank 4 includes a tank body 4a having a bottomed cylindrical body and a lid body 4b fixed to the opening of the tank body 4a. The second ink tank 4 is fitted to the closed end of the cap 5 through the lid 4b. Note that a stirring member can be accommodated in the second ink tank 4 together with the second ink 41.

The second ink tank 4 and the first ink tank 3 are configured so as not to communicate with each other. Since the second ink tank 4 is not connected to an external supply means such as a pen tip, the second ink 41 in the second ink tank 4 is configured so as not to be discharged to the outside.

<Second Embodiment>
A second embodiment of the present invention is shown in FIGS.
The writing instrument 1 according to the present embodiment includes a writing instrument body 6 that includes a nib 2, a first ink tank 3, and a second ink tank 4.

Writing instrument body The writing instrument body 6 includes a cylindrical shaft cylinder 7, a bottomed cylindrical first ink tank 3 connected to a front end opening of the shaft cylinder 7, and the first ink tank 3. The nib 2 attached to the front end opening, the second ink tank 4 accommodated in the shaft cylinder 7 behind the first ink tank 3, and the friction body attached to the rear end of the shaft cylinder 7 8 and.

Window hole A plurality of window holes 71 are provided in the side wall of the shaft cylinder 7 where the second ink tank 4 is located, and the second ink tank 4 can be visually recognized from the outside through the window hole 71. .

First ink tank The first ink tank 3 is made of an opaque synthetic resin, and the inside of the first ink tank 3 cannot be seen from the outside. A first ink 31 and a stirring member 32 are accommodated in the first ink tank 3. The first ink 31 is made of thermochromic ink. The thermochromic ink is obtained by dispersing a microcapsule pigment encapsulating a reversible thermochromic composition in microcapsules (that is, a sedimenting component of the first ink 31) in a solvent such as water. As the thermochromic ink, a type that is decolored by heating from a colored state is adopted. The stirring member 32 is made of a metal spherical body. In addition, the structure which makes the inside of the 1st ink tank 3 invisible from the outside can mention the structure which covers the outer surface of the 1st ink tank 3 with an opaque member or an opaque layer other than the above, for example. .

The pen tip 2 is attached to the front end opening of the first ink tank 3 so as to be movable in the front-rear direction. Between the nib 2 and the first ink tank 3, a valve device that opens by pressing the nib 2 backward is provided. The nib 2 employs a rod-shaped resin processed body of fiber bundles. In addition to this, the nib 2 may be, for example, a ball-point pen tip, a heat-bonded processed body of fiber bundles, a felt processed body, a pipe-shaped pen body, a fountain pen type plate-shaped pen body having a slit at the tip, a brush pen body, Examples thereof include a porous foam of a synthetic resin and an extruded product of a synthetic resin having an axial ink guide path.

A friction body 8 made of an elastic material is attached to the rear end portion of the friction body barrel 7. The thermochromic handwriting obtained with the first ink 31 is rubbed by the friction body 8 and can be thermally discolored (discolored) by frictional heat generated by the friction.

Second ink tank A second ink 41 is accommodated in the second ink tank 4. The second ink 41 is composed of the same components as the first ink 31. The second ink tank 4 is made of a transparent material (for example, transparent synthetic resin), and the second ink 41 in the second ink tank 4 can be visually recognized from the outside through the window hole 71 on the side wall of the shaft cylinder 7. . The capacity of the second ink tank 4 is set smaller than the capacity of the first ink tank 3. The second ink tank 4 includes a tank body 4a having a bottomed cylindrical body and a lid body 4b fixed to the opening of the tank body 4a. Note that a stirring member can be accommodated in the second ink tank 4 together with the second ink 41.

The second ink tank 4 and the first ink tank 3 are configured so as not to communicate with each other. Since the second ink tank 4 is not connected to an external supply means such as a pen tip, the second ink 41 in the second ink tank 4 is configured so as not to be discharged to the outside.

It is a longitudinal cross-sectional view of the 1st Embodiment of this invention. It is a figure which shows the external appearance of FIG. It is a longitudinal cross-sectional view of the 2nd Embodiment of this invention. It is a figure which shows the external appearance of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Pen tip 3 1st ink tank 31 1st ink 32 Stirring member 4 2nd ink tank 41 2nd ink 4a Tank main body 4b Cover body 5 Cap 51 Clip 6 Writing instrument main body 7 Shaft cylinder 71 Window hole 8 Friction body

Claims (4)

A first ink tank containing therein a first ink containing a sedimenting component such as a pigment and a stirring member for stirring the first ink; and a first ink tank connected to the first ink tank and first And a second ink tank containing therein a second ink containing a sedimentation component such as a pigment, and the inside of the first ink tank and the second ink tank The inside of the second ink tank is configured so as not to be ejected to the outside, the inside of the first ink tank is configured to be invisible from the outside, and the second ink tank is configured to be invisible. The ink tank is configured to be visible from the outside, and the capacity of the second ink tank is set smaller than the capacity of the first ink tank. The writing instrument according to claim 1, wherein the first ink and the second ink are composed of the same component. The writing instrument body includes the pen tip and the first ink tank, and the second ink tank is provided at a closed end of a cap that is detachably provided on the pen tip side of the writing instrument body. Writing instrument according to 2. The writing instrument main body includes the pen nib, the first ink tank, and the second ink tank, and the second ink tank is provided behind the first ink tank. Writing instrument.

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