Mitsubishi Pencil Patente

There is provided an applicator including: a shaft tube that contains an application liquid and is deformable by a side surface being pressed; an application portion that is formed as a brush and has a liquid passage hole at a rear end thereof; a front shaft into which the application portion is inserted and which is mounted at a tip end of the shaft tube; an application portion holding member that is cylindrical, is accommodated inside the front shaft, holds the rear end of the application portion in a tip end direction, and has an insertion hole that opens in a forward direction along a central axis; a valve mechanism that is accommodated at a tip end portion of the shaft tube, is interposed between the application liquid-containing portion and the application portion holding member, and opens in conjunction with pressing the side surface of the shaft tube; a relay core made of a porous body that is inserted into the insertion hole and the liquid passage hole to allow the application portion holding member and the application portion to communicate with each other; a front shaft insert that is inserted into the tip end of the front shaft with the application portion inserted, and has a tip end edge exposed from the tip end of the front shaft; and a cap that covers the tip end of the front shaft and has a step formed at an interior part, the step pressing a tip end of the front shaft insert rearward in a state in which the cap is mounted at the front shaft.

A ballpoint pen tip includes: a holder having a tubular shape, having a ball house at an interior part, and including a caulking part whose front end part is reduced in diameter toward an inner side; a tapered first tapered surface formed at an outer periphery of the holder; a tapered second tapered surface formed at a front end side of the holder relative to the first tapered surface at the outer periphery of the holder, and having a taper angle of 60° or more, the taper angle being larger than a taper angle of the first tapered surface; a tapered third tapered surface formed at an outer periphery of the caulking part, connected to the second tapered surface, and having a larger taper angle than the taper angle of the second tapered surface; and a writing ball accommodated in the ball house in a state in which a part of the writing ball protrudes from a front end of the holder, and having a protrusion amount from the front end of the holder of 25% or more of a ball diameter.

A writing instrument including a shaft tube that has an internal space serving as an ink reservoir configured to accommodate ink and is deformable when a side surface of the shaft tube is pressed, a writing tip formed as a brush portion formed by bundling fibers, a front shaft that is attached to a front end of the shaft tube with the writing tip inserted, a valve mechanism that is housed in a front end portion of the shaft tube and opens when the side surface of the shaft tube is pressed, a valve insertion member including a bottom plate positioned at a front edge of the valve mechanism and having a valve insertion hole formed at an axial center, and a cylindrical portion that is inserted into a front end side of the valve mechanism and has an internal space forming a rear housing portion, and a channel resistance valve including a columnar portion housed in the rear housing portion and having a front end surface contacting a rear end surface of the bottom plate of the valve insertion member and an insertion portion that protrudes from the front end surface of the columnar portion and is inserted through the valve insertion hole. A liquid passage groove that is recessed rearward is formed at a portion of the front end surface of the columnar portion of the channel resistance valve.

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A ballpoint pen includes a knock spring interposed between a shaft tube and a refill, a rotor having a cam formed on a rear end surface of the rotor and a pressing rod protruding toward a rear side, a knock button configured for the pressing rod to be inserted into an internal space thereof, an inner peripheral cam formed on an inner surface near a rear end of the shaft tube, a plurality of engagement cams formed on the rear end surface of the rotor and engaged with the inner peripheral cam, and an inclined surface that is a front end surface of the rotor and is inclined rearwards, in which the ballpoint pen is formed such that, in a state in which the rotor is pressed by the knock button and the engagement cams are engaged with the inner peripheral cam, the refill is biased rearwards by the knock spring, the inclined surface is pressed rearwards by the rear end of the refill such that the rotor is inclined toward a position of the inclined surface, the position being closest to a rear side with respect to an axial center, and the pressing rod presses an inner peripheral surface of the knock button so as to fix the knock button to the shaft tube.

Provided is an aqueous liquid cosmetic which can be suitably loaded onto an applicator including an application portion having a brush, such as a direct liquid type eyeliner, an eyeshadow, and an eyebrow product for drawing a line on eyebrows, by suppressing sedimentation of a plate-shaped pigment exhibiting glittering properties, and which enables drawing or the like of a line having a constant hue and sparkling effect over time. The aqueous liquid cosmetic of the present disclosure is characterized by containing at least (a) 0.01 to 10 mass% of a plate-shaped pigment having a surface coated with a compound selected from Group A, (b) at least one chromatic pigment having an average particle size of 0.01 to 1 µm as measured by dynamic light scattering, (c) 1 to 20 mass% of an acrylic copolymer in terms of solid content, and (d) water, the aqueous liquid cosmetic being loaded onto an applicator having an application portion formed of a brush: Group A: cellulose, hemicellulose, lignin, chitin, and chitosan.

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In the present invention, a writing instrument 1 includes a shaft cylinder 2, an ink storage body 6 disposed inside the shaft cylinder 2 and impregnated with ink, an ink replenishment part 10 that is disposed behind the ink storage body 6 and that has a ventilation hole 12 and an ink discharge hole 13, and an ink storage member 20 that can be attached to a rear end part of the shaft cylinder 2 and can store ink. When the ink storage member 20 is attached to a rear end part of the shaft cylinder 2, the ink in the ink storage member 20 can be supplied to the ink storage body 6 through the ink discharge hole 13 of the ink replenishment part 10.

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Provided is a rotary dispending container capable of preventing breakage of a solid core accommodated in a shaft cylinder due to an impact applied to the shaft cylinder. The rotary dispensing container is configured so as to comprise: a screw rod 9 that advances or retracts in a shaft cylinder 3 through the relative rotation of a front shaft 1 and a rear shaft 2; and a solid core 5 that moves in the axial direction in the front shaft depending on an advancing or retracting operation of the screw rod. The solid core is accommodated in a cylindrical holder 6, and a tip part of the holder is provided with a holder guide 7 having a plurality of projections 7b extending forward in the axial direction. Selection is made between a usable state in which the solid core is projected from the front shaft as the screw rod is advanced, and an accommodation state in which the solid core is retracted together with the holder and accommodated in the front shaft as the screw rod is retracted. In the accommodation state, a tip part of the solid core projecting from the holder is supported by the plurality of projections provided to the holder guide.

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An object of the present disclosure is to provide a highly color-developing aqueous liquid cosmetic which is suitable for makeup cosmetics such as an eyeliner, an eyeshadow, and an eyebrow for drawing lines on eyebrows, and in which aggregation and sedimentation of coloring materials hardly occur. An aqueous liquid cosmetic of the present disclosure contains at least a plant-derived pigment, a film-forming agent, a dispersant, and water, wherein the plant-derived pigment is contained in an amount of 1 to 30 mass% with respect to a total amount of the aqueous liquid cosmetic, and an intensity ratio G/D of a D band (1350 cm<-1>) and a G band (1582 cm<-1>) in a Raman spectrum of the plant-derived pigment is 0.5 to 10. A liquid cosmetic applicator 10 of the present disclosure is characterized in that the aqueous liquid cosmetic having the above configuration is mounted.

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Provided is an aqueous ink composition for a writing implement that is easily wetted on a non-absorbing surface, enables stable writing without repelling of a drawn line, prevents blurring of the drawn line even when a cap is removed, is excellent in non-drying property, has no difference in vertical density of a coloring material in a pen core, and is excellent in drawn line drying property, and a writing implement using the same favorable as a marking pen or a marker pen. The aqueous ink composition for a writing implement according to the present disclosure includes at least a coloring material, 0.01 to 10 mass% of a neutralized product of an isobutylene-maleic anhydride copolymer, 0.001 to 5 mass% of one or more surfactants selected from an anionic surfactant and a nonionic surfactant, and water.

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Provided are an aqueous ink composition for a writing utensil and a writing utensil using the same suitable for a marking pen, a marker pen, and the like, which can highly achieve and maintain compatibility in both durability (water resistance, polyalcohol) and good writing performance even after long-term storage without using a fixing resin and is also excellent to the recent environmental action (less environmental burden). The aqueous ink composition for a writing utensil of the present invention contains at least a water-insoluble cellulose and an evaporation inhibitor, in which a vapor pressure of ink at 50°C is less than 12.3 kPa. A writing utensil of the present invention is characterized by being loaded with the aqueous ink composition for a writing utensil having the configuration described above.

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To provide a handwriting input device that can reduce an incorrect input. A handwriting input device (1) of the present invention is a handwriting input device configured to obtain hand-written data of an electronic pen (3) on a coordinate detection surface (2a) of a coordinate input device (2) by an electromagnetic induction effect of the coordinate input device and the electronic pen. The electronic pen includes a first resonance circuit (40) including a coil, a capacitor, and a core, a mechanical pencil unit configured to perform writing on a paper sheet placed on the coordinate detection surface, and a writing pressure detecting portion (45) configured to detect a writing pressure such that a part of the mechanical pencil unit is pushed by receiving the writing pressure applied to a lead projecting from a distal end of the mechanical pencil unit. The detection of the writing pressure causes the coordinate input device to obtain the hand-written data corresponding to a handwriting on the paper sheet while writing is performed on the paper sheet with the electronic pen.

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