JP2015009458A - Feeding thermochromic writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeding thermochromic writing utensil comprising a pen nib capable of writing as the thermochromic writing utensil, a friction portion capable of heat-decoloring the trace of the writing by friction and an input portion that enables inputting into an electrostatic input device.SOLUTION: The feeding thermochromic writing utensil has a friction portion made of low abrasive elastic materials, which can friction handwriting in thermochromic ink and heat-decolor the handwriting by friction heat generated during the friction, provided behind a barrel, where the vicinities of a holding portion and the opening portion of the barrel are covered with an input body made of conductive materials, which operates an input screen with an input pen and fingers and performs inputting to an input device that detects the position of an operation portion of the input screen by an electrostatic capacitance system.

Description

  The present invention relates to a thermochromic writing instrument. Specifically, a nib that can eject thermochromic ink, and a friction part that is made of a low-abrasion elastic material that can rub the handwriting of the thermochromic ink and thermally discolor the handwriting by frictional heat generated at that time. In addition, the present invention relates to a feed-type thermochromic writing instrument that allows a pen tip to be projected and retracted from an opening provided in front of the shaft tube by operating an operation unit provided on the shaft tube.

  Conventionally, there has been known a thermochromic writing instrument with a friction part that thermally discolors handwriting written on paper using a thermochromic ink with frictional heat when rubbing. For example, Patent Document 1 discloses reversible thermochromic. The structure where a frictional body is provided at the rear end of the writing cylinder with the built-in ink and the top of the cap for the writing instrument is described, and the writing with the thermochromic ink written on the writing instrument is provided on the writing instrument. A structure that is thermally discolored by a friction body is disclosed. This thermochromic writing instrument has very convenient properties, and it is actually commercialized that the handwriting written on paper with the writing instrument can be rubbed and discolored by the friction part provided on the writing instrument. And satisfied with a wide range of users.

  On the other hand, as described in Patent Document 2, thin touch panel type input devices that are used by hand are gaining popularity in the market, and the input screen of electrostatic input type input devices is touched with a fingertip. Or, as disclosed in Patent Document 3, an input pen made of conductive rubber is provided at the front, and the input screen of the input device is handled in the same way as paper, and a picture is displayed. There is a growing demand for input pens that can draw and write letters.

  By the way, in the market, an input unit is provided on one end side of the shaft cylinder and a pen tip such as a ballpoint pen is provided on the other end side, so that not only input to the input device but also writing on paper can be performed. There is a writing instrument with a double-headed structure. However, in such a structure, an input unit for inputting to the input device is provided exclusively on the opposite side of the pen tip for writing on paper, so it is considered to implement in the above-described thermochromic writing instrument. In this case, it is necessary to prepare a friction tool for rubbing the handwriting separately from the writing tool, which is inconvenient.

  In addition, in the thermochromic writing instrument described in Patent Document 4, a rubbing member (friction portion) for thermally discoloring thermochromic ink with frictional heat is formed of a conductive material, and a shaft for holding the rubbing member (friction portion). A structure in which a cylinder and a cap are also made of a conductive material, and an input is made to the input device by sliding the scrubbing member of the thermochromic writing instrument as an input portion with respect to the input screen of the electrostatic input type input device. Is disclosed. However, it is better to have a frictional resistance against the paper surface and to generate frictional heat (friction part) and to the input screen of the input device it is better to slide smoothly without frictional resistance. The relationship with the member (input part) is not considered, and when used for rubbing against the paper surface, the rubbing member slips and the frictional heat is less likely to be generated. When used for writing letters, there has been a problem that the scraping member is caught on the input screen due to frictional resistance, making it difficult to input.

  Among the thermochromic writing instruments, a writing body such as a ballpoint pen refill having a nib that can eject thermochromic ink in the front is accommodated inside the shaft cylinder, and an operation unit provided on the shaft cylinder is operated. The feeding-type thermochromic writing instrument that allows the pen tip to appear and disappear from the opening provided in front of the shaft tube is popular because of its convenience, and a plurality of, for example, colors arranged in the shaft tube A pay-out thermochromic writing instrument that can be made to appear and disappear by selecting a ballpoint refill containing different thermochromic ink is particularly popular, and even in such a pay-out thermochromic writing instrument, an electrostatic input method There is a demand for an input device that can input on an input screen.

JP 2004-148744 A JP 2011-81825 A Japanese Patent No. 4142276 JP 2012-162019 A

  The present invention includes a pen tip capable of writing as a thermochromic writing instrument, a friction portion capable of thermally discoloring the handwriting by friction, and an input portion capable of performing input to an electrostatic input device. Another object of the present invention is to provide a pay-out thermochromic writing instrument.

The present invention
“1. A writing body having a pen tip capable of discharging thermochromic ink at the front end of the main body shaft is accommodated inside the shaft tube, and the operation unit provided on the shaft tube is operated, The pen tip of the writing body can be made to appear and disappear from an opening provided in front of the shaft cylinder, and the handwriting of the thermochromic ink is rubbed behind the shaft cylinder by friction heat generated at that time. A thermochromic writing instrument provided with a friction part made of a low-abrasion elastic material capable of undergoing thermal discoloration, wherein the gripping part of the shaft cylinder and the vicinity of the opening are displayed on the input screen by an input pen or a finger. A feeding type thermochromic writing instrument which is operated and covered with an input body made of a conductive material for inputting to an input device which detects the position of an operation portion of the input screen by a capacitance method.
2. An input chip body having an input chip made of a conductive material at the tip of a main body shaft is accommodated inside the shaft cylinder, and is provided in front of the shaft cylinder by operating an operation portion provided on the shaft cylinder. The input chip of the input chip body is projected and retracted from the opening, and the input chip protrudes from the opening of the shaft cylinder. The feeding-type thermochromic writing instrument as described in 1 above, wherein the input chip abuts on the input chip. It is.

As the pen tip for discharging the thermochromic ink, a ballpoint pen tip or a porous pen body can be used. In this case, the average particle size of the thermochromic microcapsule particles to be contained in the thermochromic ink is 0.1. Those having a thickness of ˜5.0 μm, preferably 0.5-3 μm are suitable. When the average particle diameter exceeds 3.0 μm, the flowability from the capillary gap of the ballpoint pen tip or the marking pen chip decreases, and when the average particle diameter is less than 0.5 μm, it is difficult to show high color development.
The “average particle diameter” defined in the present invention is a value obtained by using a laser type particle size distribution analyzer LA-300 (volume basis) manufactured by Horiba, Ltd., and using the median diameter as the average particle diameter.

In addition, as the thermochromic ink, a general-purpose ink can be applied regardless of reversible and irreversible, and the color of the handwriting can be changed, the color of the handwriting can be changed, and the color can be erased and colored by heating the handwriting by frictional heat. Can be applied selectively.
In particular, the change in the handwriting can be stably expressed for a long time without causing a change in composition by encapsulating the thermochromic composition in a microcapsule.
The thermochromic composition encapsulated in the microcapsule pigment includes (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, from the viewpoints of repeated usability and temperature change accuracy. (C) A reversible thermochromic composition comprising a reaction medium that determines the temperature at which the two color reactions occur is preferred.

Specific examples of the microcapsule pigment encapsulating the reversible thermochromic composition include predetermined ones described in JP-B-51-44706, JP-B-51-44707, JP-B-1-29398, and the like. Before and after the temperature (discoloration point), the color changes in the temperature range above the high temperature side discoloration point, and the color develops in the temperature range below the low temperature side discoloration point. There is only one specific state, and the other state is maintained while the heat or cold required to develop the state is applied, but at room temperature if the heat or cold is no longer applied It is possible to apply a microcapsule pigment encapsulating a heat decoloring type reversible thermochromic composition having a characteristic (ΔH = 1 to 7 ° C.) having a relatively small hysteresis width that returns to the state shown in FIG.
Furthermore, relatively large hysteresis characteristics (ΔH = 8 to 50) described in Japanese Patent Publication No. 4-17154, Japanese Patent Application Laid-Open No. 7-179777, Japanese Patent Application Laid-Open No. 7-33997, Japanese Patent Application Laid-Open No. 8-39936, and the like. C.) can also be applied.

  Further, it exhibits a large hysteresis characteristic described in JP-A-2006-137886, JP-A-2006-188660, JP-A-2008-45062, JP-A-2008-280523, etc., that is, due to temperature change. The shape of the curve plotting the change in color density follows a very different path when the temperature is raised from the lower temperature side than the color change temperature range, and vice versa. The reversible heat has a color memory in a specific temperature range (substantially two-phase holding temperature range) when the color development state in the low temperature range below the complete color development temperature or in the high temperature range above the complete color erase temperature. It is also possible to use a microcapsule pigment in which a color changing composition is encapsulated.

  In addition, as a reversible thermochromic composition having color memory, applied to the pay-out type thermochromic writing instrument of the present invention, specifically, a temperature at which a complete coloring temperature can be obtained only in a freezing room, a cold district, etc. That is, −50 to 0 ° C., preferably −40 to −5 ° C., more preferably −30 to −10 ° C., and the temperature obtained from a familiar heating body such as a frictional heat generated by a friction body and a hair dryer. That is, it is specified in the range of 50 to 95 ° C., preferably 50 to 90 ° C., more preferably 60 to 80 ° C., and the ΔH value is specified to 40 to 100 ° C., thereby presenting in a normal state (daily living temperature range). It can function effectively for color retention.

  In addition, the thermochromic ink was not contained directly in the shaft of the writing instrument, but was stored in the writing object such as a ballpoint pen refill and then stored in the shaft of the writing instrument. In this case, refill exchange can be performed, and a structure in which ink does not leak out can be easily obtained.

The friction body of the present invention is preferably an elastic synthetic resin (rubber or elastomer). For example, silicon resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin (styrene-ethylene-butylene-styrene copolymer). Polymer), fluororesin, chloroprene resin, nitrile resin, polyester resin, ethylene propylene diene rubber (EPDM), etc., and not composed of a highly wearable elastic material (for example, an eraser) but at the time of friction It is made of a low-abrasion elastic material that hardly generates wear debris.
The input body and the input chip of the present invention are preferably formed of a conductive resin in which carbon fiber or metal fiber is mixed into a resin, and in particular, a conductive material in which conductive fiber is mixed in an elastomer resin having elasticity. By molding with elastomer, the same elastic material as the friction body can be obtained, and the input screen can be prevented from being damaged when the input body is brought into contact with the input device. Even if the paper is jammed, the paper surface is hardly damaged, and the feel when the input body is gripped as the gripping portion of the shaft cylinder is improved.

  As the feeding mechanism for retracting the writing body accommodated in the shaft cylinder, the tip of the shaft cylinder is interlocked with the writing body connected to the sliding body by moving the sliding body protruding outward from the shaft cylinder. The slide feeding mechanism that makes the writing tip appear and disappears from the rear, and the cam shaft formed in the rear shaft is rotated by rotating the rear shaft connected to the front shaft so as to be rotatable relative to the front shaft. There is a rotary feeding mechanism that moves the sliding body disposed in the shaft back and forth to interlock the writing body connected to the sliding body so that the pen tip protrudes and retracts from the tip of the shaft cylinder.

  When the shaft body is formed of a conductive material, the material is a metal material such as stainless steel, aluminum, brass, or iron, a conductive resin material such as polyacetylene, polypyrrole, polythiophene, or polyaniline, carbon fiber material, non-conductive material. Examples thereof include composite conductive resins obtained by adding a conductor mainly composed of an inorganic substance to a conductive resin to provide an electric / electronic function.

  According to the present invention, it is provided with a nib that can be written as a thermochromic writing instrument, a friction part that can thermally discolor the handwriting by friction, and an input part that can input to an electrostatic input device. In addition, a pay-out thermochromic writing instrument could be obtained.

FIG. 1 is a perspective view showing a pay-out type thermochromic writing instrument of the present embodiment. FIG. 2 is a longitudinal sectional view. FIG. 3 is a diagram showing a state in which an input is made to a capacitance type input device with the feeding type thermochromic writing instrument of the present embodiment. FIG. 4 is a longitudinal sectional view showing a state in which the input chip is protruded. FIG. 5 is a diagram showing another state in which an input is made to the capacitance type input device with the feeding type thermochromic writing instrument of the present embodiment. FIG. 6 is a longitudinal sectional view showing a state in which the ballpoint pen tip is projected. FIG. 7 is a diagram showing a state in which writing is performed with the feeding-type thermochromic writing instrument of this example. FIG. 8 is a diagram showing a state in which thermal discoloration is performed with the pay-out type thermochromic writing instrument of this example.

Next, specific examples of embodiments of the present invention (hereinafter referred to as examples) will be described with reference to the drawings, but the present invention is not limited to the following examples.
In addition, in order to make the explanation easy to understand, the same numbers are given to the same members and the same parts in the drawings. In the description of the present embodiment, the side with the pen tip is expressed as the front side, and the opposite side is expressed as the back side.
Further, in this embodiment, a slide feeding mechanism having a structure in which the tip of the writing body protrudes by advancing the protruding portion of the operating body as a projecting and retracting mechanism of the writing body is not particularly limited. It is also possible to adopt a structure in which the tip of the writing body is fed out by a rotation feeding mechanism using a rotating cam.

FIG. 1 is a perspective view showing a feeding-type thermochromic writing instrument of the present embodiment, and FIG. 2 is a longitudinal sectional view.
The pay-out type thermochromic writing instrument 1 of the present embodiment has a shaft cylinder 2 composed of a front shaft 3 and a rear shaft 4, and the vicinity of an opening 3 b formed in a grip portion 3 a and a front opening of the front shaft 3. , JIS-K6253: 2006 is coated with an input body 5 formed of a conductive elastomer obtained by kneading carbon powder with a silicon-based thermoplastic elastomer having a Shore A hardness of 70. The front portion 5 a of the input body 5 is formed along the front shape of the front shaft 3, and the end portion 5 b is formed so as to protrude inside the opening 3 b of the front shaft 3.

As shown in FIG. 2, a ballpoint pen body 6 for writing on paper and an input chip body 7 used for an input device are accommodated in the shaft cylinder 2, and operating bodies 8 and 9 connected to the rear thereof. The protrusions 8a and 9a are protruded from three cutout windows 4a formed along the axis behind the rear shaft 4, respectively. The ball-point pen body 6 has a ball-point pen tip 6b for writing on a paper surface inserted in front of a main body shaft 6a formed of a transparent resin material, and a front small protrusion of the operation body 8 behind the main body shaft 6a. 8b is inserted and connected integrally. The input chip body 7 is formed of a conductive elastomer obtained by kneading carbon powder with a silicon-based thermoplastic elastomer having a Shore A hardness of 90 obtained by JIS-K6253: 2006, in front of a body shaft 7a formed of a transparent resin material. The input chip 7b is inserted, and the front small protrusion 9b of the operating body 9 is inserted and integrally connected to the rear of the main body shaft 7a.
Although not described in detail, in this embodiment, an operation body 11 similar to the above-described operation bodies 8 and 9 is connected to the back of the main body shaft 10a formed of a transparent resin material, and is a ballpoint pen for writing on the paper surface. The ballpoint pen body 10 in which the tip portion 10b is connected to the front of the main body shaft 10a can be accommodated in the shaft cylinder 2 (see FIG. 1). In addition, the ink color of the ball-point pen body 6 and the ink color of the ball-point pen body 10 are different colors.
Further, in any of the ballpoint pen bodies 6 and 10, a thermochromic composition having a complete color development temperature of −20 ° C., a complete color erasing temperature of 64 ° C., and a ΔH value of 70 ° C. is provided inside the main body shafts 6a and 10a. A thermochromic ink (not shown) in which an encapsulated microcapsule pigment having an average particle diameter of 3 μm is dispersed in an aqueous medium is accommodated.

  Further, a base portion 12 a of a clip 12 disposed on a side surface of the rear shaft 4 is extended at the rear portion of the rear shaft 4, and the base portion 12 a of the clip 12 is extended to the lid main body portion 13 a of the lid body 13. The leg portion 13b is held rotatably. In addition, two latching holes 13c are provided on the upper surface of the lid main body portion 13a. When the lid main body portion 13a is closed, the two latching claws 4b formed on the rear shaft 4 are connected to the lid main body portion 13a. The operation body 8 or 9 that is repelled rearward by the springs 14 and 15 in the shaft cylinder 2 shown in FIG. 2 is held by the cover hole 13c and pressed by the lid body 13a. It is. Therefore, the pay-out type thermochromic writing instrument 1 of the present embodiment has a structure in which the internal ballpoint pen body 6, the input chip body 7, the ballpoint pen body 10, and the like can be easily replaced as necessary by opening and closing the lid 13. It has become.

  In addition, a recess 13d is formed on the rear side of the lid body 13a, and a friction body 16 formed of a styrene thermoplastic elastomer having a Shore A hardness of 90 determined by JIS-K6253: 2006 is attached to the recess 13d. It is. The friction body 16 has a dome-shaped friction portion 16a formed at the top, a small-diameter insertion portion 16b formed on the opposite side, and is inserted into the concave portion 13d of the lid body portion 13a by press-fitting. .

  FIG. 3 is a diagram showing a state in which an input device of a capacitance type is inputting with the feeding type thermochromic writing instrument of the present embodiment, and the front portion 5a of the input body 5 covered with the grip portion 3a of the front shaft 3. Is brought into contact with the input screen 120a of the capacitance type input device 120 and slid, the capacitance changes in the input screen 120a through the input body 5 held by the user, and the image creation software screen is displayed. A line 120b could be drawn.

  Next, the input operation of the input chip of the pay-out type thermochromic writing instrument will be described with reference to FIG. As shown in the figure, when the input tip 7b of the input tip body 7 is projected from the opening 3b of the front shaft 3 while sliding the projection 9a of the operating body 9 and compressing the spring 15, the rear end of the operating body 9 is shown. The locking projection 9c formed on the portion is locked to the locking receiving portion 4c formed on the inner surface of the rear shaft 4, and the input chip 7b can be maintained in a state of protruding from the opening 3b of the front shaft 3. . At this time, since the input chip 7b contacts the end 5b of the input body 5 while elastically deforming it, the electrical conduction state between the input body 5 and the input chip 7b can be ensured.

  FIG. 5 is a diagram showing a state where an input chip of a feeding type thermochromic writing instrument is inputting into a capacitance type input device. An input chip 7b protruding from the opening 3b of the front shaft 3 is replaced with a capacitance. When the input screen 120a of the type input device 120 is slid while being in contact with the input screen 120a, a capacitance change occurs in the input screen 120a through the input body 5 and the input chip 7b gripped by the user, and the image creation software screen is displayed. A line 120c could be drawn.

  Next, with reference to FIG. 6, the feeding operation of the ballpoint pen tip of the feeding type thermochromic writing instrument will be described. From the state of FIG. 4, the spring 14 is compressed and slid forward while pressing the protrusion 8 a of the operation body 8 inward, so that the lock receiving portion 4 c is moved by the lock release protrusion 8 d formed on the operation body 8. The locking projection 9c that is locked is released, the input tip 7b of the input tip body 7 is immersed in the shaft cylinder 2 by the elastic force of the spring 15, and the operation body 9 is further moved forward to operate the input tip 7b. The locking projection 8c formed on the rear end of the body 8 is locked to the locking receiving portion 4c, and the ball-point pen tip 6b of the ball-point pen body 6 protrudes from the opening 3b of the front shaft 3 as shown in FIG. Can be maintained.

Next, with reference to FIG. 7, the state of writing on the paper surface with the pay-out type thermochromic writing instrument 1 of the present embodiment will be described. As shown in the figure, the pay-out type thermochromic writing instrument 1 was able to write characters 110a on paper 110 by ejecting thermochromic ink from a ballpoint pen tip 6b protruding from the opening 3b of the front shaft 3. .
Next, with reference to FIG. 8, the state in which the handwriting with the thermochromic ink written on the paper surface is erased by thermal discoloration with the feeding type thermochromic writing instrument 1 of the present embodiment will be described. As shown in the figure, the pay-out thermochromic writing instrument 1 is written with the thermochromic ink by rubbing the paper 110 with the friction portion 6a of the friction body 16 inserted into the lid body 13 of the rear shaft 4. The handwriting was erased with frictional heat, and the characters 110a could be erased.

1 ... Feeding type thermochromic writing instrument,
2 ... shaft tube,
3 ... front shaft, 3a ... gripping part, 3b ... opening,
4 ... Rear shaft, 4a ... Notch window, 4b ... Two hooking claws, 4c ... Lock receiving part,
5 ... input body, 5a ... front part, 5b ... end part,
6 ... Ballpoint pen body, 6a ... Main body axis, 6b ... Ballpoint pen tip,
7 ... Input chip body, 7a ... Main body axis, 7b ... Input chip,
8 ... Operating body, 8a ... Projection, 8b ... Small front projection, 8c ... Locking projection,
8d: locking release protrusion,
9 ... Operating body, 9a ... Projection, 9b ... Small front projection, 9c ... Locking projection,
9d: locking release protrusion,
10 ... ballpoint pen body, 10a ... body axis, 10b ... ballpoint pen tip,
11 ... operating body,
12 ... clip, 12a ... base,
13 ... Lid, 13a ... Lid body, 13b ... Leg,
13c: Two retaining holes, 13d: Recess,
14 ... Spring, 15 ... Spring,
16 ... friction body, 16a ... friction part, 16b ... insertion part,
110 ... paper, 110a ... character 120 ... capacitance type input device, 120a ... input screen,
120b, 120c: Lines drawn on the screen of the image creation software.

Claims (2)

Inside the shaft tube, a writing body having a pen tip capable of discharging thermochromic ink at the front end of the main body shaft is accommodated in the shaft tube, and by operating an operation portion provided on the shaft tube, The pen tip of the cursive body can be projected and retracted from an opening provided in the front, and the handwriting of the thermochromic ink is rubbed behind the shaft tube, and the handwriting is thermally discolored by frictional heat generated at that time. A feeding-type thermochromic writing instrument provided with a friction part made of a low-wearing elastic material capable of operating the input screen on the gripping part of the barrel and the vicinity of the opening with an input pen or a finger, A feeding type thermochromic writing instrument characterized in that it is covered with an input body made of a conductive material for inputting to an input device that detects the position of the operation portion of the input screen by a capacitance method. An input chip body having an input chip made of a conductive material at the tip of a main body shaft is accommodated inside the shaft cylinder, and is provided in front of the shaft cylinder by operating an operation portion provided on the shaft cylinder. The input chip of the input chip body is projected and retracted from the opening, and the input chip protrudes from the opening of the shaft cylinder. The feeding-type thermochromic writing instrument according to claim 1, wherein the input chip abuts against the input chip.

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