JP2012162019A - Thermochromic writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermochromic writing utensil that can erase handwriting by a rubbing member, and enables input not only in a pressure-sensitive touch panel but also in a capacitance type touch panel by using the rubbing member.SOLUTION: In the writing utensil in which the reversible thermochromic ink is stored and which includes the rubbing member, conductive material is used for the rubbing member. Conductive rubber is desirably used as the conductive material. All the members used between a part held by a user and the rubbing member are made of the conductive material in a writing utensil body. Metal or conductive resin is used as the conductive material.

Description

  The present invention relates to a thermochromic writing instrument. More specifically, the present invention relates to a thermochromic writing instrument that can be input to a capacitive touch panel.

In Patent Document 1, a thermochromic ink is accommodated inside the writing instrument body, a pen tip capable of ejecting the thermochromic ink is provided at the front end of the writing instrument body, and the rear end of the writing instrument body or the tip of the cap Describes a thermochromic writing instrument provided with a friction part that can rub the handwriting of the thermochromic ink and frictionally generate the handwriting with the frictional heat generated at that time.
Further, in Patent Document 2, a writing body containing a thermochromic ink is accommodated in a shaft cylinder so as to be movable in the front-rear direction, and an operation unit is provided on the outer surface of the shaft cylinder, and the operation unit is operated to operate the operation unit. In a writing instrument in which the pen tip of the writing body can be projected and retracted from the front end hole of the shaft tube, the handwriting of the thermochromic ink can be rubbed against the outer surface of the shaft tube, and the handwriting can be thermally discolored by frictional heat generated at that time. A thermochromic writing instrument provided with a simple friction part is described.

JP 2007-223302 A International Publication WO2008-105227

The thermochromic writing instruments that have been proposed and put to practical use use an elastic body such as a synthetic rubber as a rubbing member. These materials are electrically insulating materials and do not exhibit electrical conductivity.
In addition, although the shaft tube, the cap, and other parts of the conventional thermochromic writing instrument are mainly made of synthetic resin, these materials are also electrically insulating materials and do not exhibit electrical conductivity.

On the other hand, in the field of information equipment, demand for touch panels is rapidly expanding in various fields, mainly mobile phones, personal digital assistants (PDAs), digital audio players, and portable game machines. There are various types of touch panels, but the mainstream at present is the resistance film type and the capacitance type. Since the resistance film type is a pressure-sensitive input method, it can be input with an input pen made of wood, resin or inorganic material in addition to fingers.
On the other hand, the capacitance type can be input with a finger or a conductive input pen, but cannot be input with an electrically insulating material. The present invention is intended to provide a thermochromic writing instrument that can be input to a capacitive touch panel.

The present invention includes a shaft cylinder that contains a thermochromic ink inside and a pen tip that can discharge the thermochromic ink at one end, and a cap that is open at one end so as to be attachable to the pen tip side of the shaft cylinder A thermochromic writing instrument comprising: a thermal discoloration comprising a rubbing member attached to the outer surface of the thermochromic writing instrument and capable of rubbing the thermochromic handwriting and heat-discoloring the handwriting with frictional heat generated at that time In the writing instrument, the rubbing member is made of a conductive material, the shaft tube and / or the cap is formed of a conductive material, and the rubbing member and the shaft tube and / or the cap are electrically connected. As a requirement.
Also, thermochromic ink is accommodated inside the cursive body, a pen tip capable of ejecting the thermochromic ink is provided at the front end of the cursive body, and the cursive body is accommodated in the shaft cylinder so as to be movable in the front-rear direction. And a thermochromic writing instrument configured such that the pen tip of the writing body can be projected and retracted from a front end hole of the shaft cylinder, and is attached to the outer surface of the thermochromic writing instrument and rubs the thermochromic handwriting to be generated at that time In a thermochromic writing instrument provided with a rubbing member capable of thermally discoloring the handwriting by frictional heat, the rubbing member and the shaft tube are formed of a conductive material, and the rubbing member and the shaft tube are electrically connected. Is a requirement.

  The thermochromic writing instrument of the present invention can be input to a capacitive touch panel with the rubbing member with the above-described configuration. That is, the rubbing member is electrically connected to the user's hand through the shaft tube and / or cap. Accordingly, the rubbing member is maintained at the same potential as the user's hand holding the shaft cylinder and / or cap, and a capacitance is formed in a contact state between the capacitive coordinate touch panel and the rubbing member. .

It is a longitudinal cross-sectional view of the 1st Embodiment of this invention. It is a longitudinal cross-sectional view of the 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the 3rd Embodiment of this invention. It is a longitudinal cross-sectional view of the 4th Embodiment of this invention. It is a longitudinal cross-sectional view of the 5th Embodiment of this invention.

The rubbing member used in the thermochromic writing instrument of the present invention is formed of a conductive material. The rubbing member discolors the handwriting formed with the thermochromic ink by frictional heat due to rubbing,
The material is not limited, but an elastic body such as rubber is preferably used. In the present invention, application of conductive rubber is preferred.
The rubbing member can be obtained by molding a conductive rubber in which a conductive agent such as conductive carbon or metal is mixed in natural rubber, or synthetic rubber such as nitrile rubber, silicone rubber, SBS, or SEBS.
The scraping member can also be obtained by molding a commercially available conductive rubber material. Examples of commercially available conductive rubber materials include EC series silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd., Leo Pound series manufactured by Lion Corporation, and Sustech series manufactured by JFE Techno-Research Corporation.

The writing tool barrel and cap used in the thermochromic writing instrument of the present invention are also formed of a molding material containing a resin and a conductive filler, or a conductive material such as a metal material. A conductive resin is preferable in that a shaped part can be easily obtained.
The conductive resin can also be obtained by mixing a conductive agent such as conductive carbon or metal in the resin as in the case of the conductive rubber, but a commercially available conductive resin can also be used. Commercially available conductive resins include Neocon series manufactured by Dainichi Seika Kogyo Co., Ltd., Papiostat series manufactured by Tokyo Ink Co., Ltd., Wistat series manufactured by Otsuka Chemical Co., Ltd., and JFE Techno Research Co., Ltd. Examples include the Sustech series.

  The thermochromic ink is preferably a reversible thermochromic ink. The reversible thermochromic ink is a heat decoloring type that decolors by heating from a colored state, a color memory retaining type that reversibly stores and retains a colored state or a decolored state in a specific temperature range, or from a decolored state Various types such as a heating coloring type that develops color by heating and returns to a decolored state by cooling from the colored state can be used alone or in combination.

  The coloring material contained in the reversible thermochromic ink includes conventionally known (a) electron donating color-forming organic compounds, (b) electron-accepting compounds, and (c) color reactions of both. A reversible thermochromic pigment in which a reversible thermochromic composition containing at least the essential three components of a reaction medium for determining the occurrence temperature of the polymer is encapsulated in a microcapsule is preferably used.

  A first embodiment of the present invention is shown in FIG. The thermochromic writing instrument 1 of the present embodiment has a polypropylene ink containing tube 21 filled with a shear thinning viscosity reversible thermochromic ink 4 and a ballpoint pen tip 3 fitted on one end thereof, and the shear thinning viscosity reversible thermochromic property. The refill 2 in which the ink backflow prevention body 5 is arranged at the rear end of the ink 4 is a ballpoint pen that is housed in a shaft cylinder 6 in which the front shaft 61 and the rear shaft 63 are screwed. It is fixed. Here, at least the rear shaft 63 is made of a conductive resin, and the rubbing member 8 is made of a conductive rubber.

  A second embodiment of the present invention is shown in FIG. The thermochromic writing instrument 1 of the present embodiment has a polypropylene ink containing tube 21 filled with a shear thinning viscosity reversible thermochromic ink 4 and a ballpoint pen tip 3 fitted on one end thereof, and the shear thinning viscosity reversible thermochromic property. The refill 2 in which the ink backflow prevention body 5 is arranged at the rear end of the ink 4 is accommodated in a shaft cylinder 6 in which the front shaft 61 and the rear shaft 63 are screwed together, and a ballpoint pen in which the cap 7 is detachably attached to the front shaft 61. In this case, the rubbing member 8 is fixed to the tip of the cap 7. Here, at least the cap 7 is made of a conductive resin, and the rubbing member 8 is made of a conductive rubber.

  A third embodiment of the present invention is shown in FIG. The thermochromic writing instrument 1 according to the present embodiment accommodates reversible thermochromic ink in an ink occlusion body 10 in which a batting made of polyester fiber is covered with a film-like outer skin, and from a fiber processed body in which a capillary gap is formed. In the marking pen in which the tip 3 is mounted on the shaft cylinder 6 and the ink occluding body 10 and the chip 3 are connected, a rubbing member 8 is fixed to the rear end of the shaft cylinder 6. Here, at least the shaft cylinder 6 is made of a conductive resin, and the rubbing member 8 is made of a conductive rubber.

  A fourth embodiment of the present invention is shown in FIG. The thermochromic writing instrument 1 of the present embodiment accommodates a ballpoint pen refill 2 containing a plurality of thermochromic inks in a shaft cylinder 6 so as to be movable in the front-rear direction, and operates a slide lever 10 directly connected to the refill 2. Thus, in the thermochromic writing instrument 1 having a structure in which the tip 3 at the tip of the refill 2 is projected and retracted, a rubbing member 8 is fixed to a refill exchangeable lid 11 provided at the rear end of the shaft tube 6. . Here, at least the shaft cylinder 6 and the lid 12 are made of conductive resin, and the rubbing member 8 is made of conductive rubber.

  A fifth embodiment of the present invention is shown in FIG. The thermochromic writing instrument 1 of the present embodiment accommodates a ballpoint pen refill 2 containing a thermochromic ink in a shaft cylinder 6 so as to be movable in the front-rear direction, and operates the slide lever 10 also serving as a clip. In the thermochromic writing instrument 1 having a structure in which the tip 3 at the tip of the refill 2 is projected and retracted, a rubbing member 8 is fixed to the rear end portion of the shaft tube 6. Here, at least the intermediate shaft 62 and the rear shaft 63 are made of conductive resin, and the rubbing member 8 is made of conductive rubber.

The thermochromic writing instrument of the present invention can be erased by rubbing a portion of the handwriting written with the thermochromic writing instrument by rubbing with a scraping member fixed to the writing instrument, and writing again on the erased part. You can also.
Furthermore, it was possible to input the resistance member type touch panel and the electrostatic capacity type with the rubbing member.

  In contrast, a commercially available thermochromic writing instrument (Pilot Corporation's friction ball) was able to erase the handwriting and input the resistive touch panel without any problems, but it could be input to the capacitive touch panel. There wasn't.

DESCRIPTION OF SYMBOLS 1 Thermochromic writing instrument 2 Refill 21 Ink receiving tube 22 Holder 3 Tip 4 Shear thinning viscosity reversible thermochromic ink 5 Ink backflow prevention body 6 Shaft cylinder 61 Front shaft 62 Intermediate shaft 63 Rear shaft 7 Cap 8 Scraping member 9 Ink occlusion body 10 Slide lever 11 Lid

Claims (7)

  It is composed of a shaft cylinder that contains a thermochromic ink inside and a pen tip that can discharge the thermochromic ink at one end, and a cap that is open at one end so that it can be attached to the pen tip side of the shaft cylinder, A thermochromic writing instrument provided with a rubbing member capable of thermally discoloring the handwriting with frictional heat generated by rubbing the thermochromic handwriting with the thermochromic ink on the outer surface, wherein the rubbing member is a conductive material The thermochromic writing instrument, wherein the shaft cylinder and / or the cap is made of a conductive material, and the rubbing member and the shaft cylinder and / or the cap are electrically connected.   The thermochromic writing instrument according to claim 1, wherein the rubbing member is attached to the top of the cap.   The thermochromic writing instrument according to claim 1, wherein the rubbing member is attached to the rear end of the shaft cylinder.   A thermochromic ink is contained inside the cursive body, a pen tip capable of ejecting the thermochromic ink is provided at a front end of the cursive body, and the cursive body is accommodated in a shaft cylinder so as to be movable in the front-rear direction. The pen tip of the cursive body is configured to be able to protrude and retract from the front end hole of the shaft cylinder, and the thermochromic handwriting by the thermochromic ink is rubbed against the outer surface of the shaft cylinder, and the handwriting is heated by friction heat generated at that time A thermochromic writing instrument provided with a discolorable rubbing member, wherein the rubbing member and the shaft tube are formed of a conductive material, and the rubbing member and the shaft tube are electrically connected to each other. A thermochromic writing instrument.   The thermochromic writing instrument according to any one of claims 1 to 4, wherein the conductive material used for the rubbing member is a conductive rubber.   6. The thermochromic writing instrument according to claim 1, wherein the conductive material used for the shaft tube is a metal or a conductive resin.   The electrochromic writing instrument according to claim 1, 2, 3, 5, or 6, wherein the conductive material used for the cap is a metal or a conductive resin.

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