223results about "Nibs" patented technology

The task is to provide an active stylus pen that can write on a written object, such as paper, like a ballpoint pen or a mechanical pencil.An active stylus pen transmitting a signal to a chip provided at a tip of a refill of a ballpoint pen.

To solve the problem that when the thick part at the rear end of the ball holder is deformed so as to be tilted inward by plastic deformation or the like, in the thickness of the front side of the ball holder, which is thinner due to the presence of the relatively large intermediate ball, deformation, such as buckle, occurs, and this narrows the ink flow path between the intermediate ball, the rear of the internal protrusion where the intermediate ball is disposed, and the wall surface of the ink flow hole, thereby impeding ink flow and impeding the rotation of the intermediate ball, resulting in smudged writing lines and a poor writing feel.SOLUTION: The gist of the present invention is a ball-point pen tip in which an intermediate ball has a diameter of 70% or more of the diameter of the writing ball, is rotatably disposed within the ink flow hole at the rear of the inward protrusion, and comes into contact with the writing ball by being pressed forward by a pressing member, and the pressing member is prevented from coming out by contacting the inner wall surface of the rear-end tilting portion, and the thickness of the ball holder is such that thickness A within the axial range in which the intermediate ball can exist is greater than thickness B of the rear-end tilting portion.SELECTED DRAWING: Figure 2

The application discloses a pen point and a pen and belongs to the pen field. The pen point comprises a pen tongue, a pen point and a pen holder, the pen holder comprises an arc-shaped fixing sheet and adjusting screws, the arc-shaped fixing sheet is arranged on the outer side surface of the pen point at the ink leading gap ink inlet end, a plurality of adjusting holes are formed on the two sides of the pen point corresponding to the ink leading gap, the adjusting screws are in one-to-one correspondence with the arc-shaped fixing sheet and are screwed with the pen tongue through the adjusting holes, the tail ends of the adjusting screws on the two sides of the ink leading gap are inclined to each other, the length of the adjusting screws screwed into the pen tongue part is changed, the distance between the adjusting holes on the two sides of the ink leading gap is adjusted, the width of the ink leading gap is adjusted, the ink flow at the pen point is adjusted, and different forms of writing requirements are met.

The invention discloses a porous material refill and a writing tool, the porous material refill comprises a head part and a handle part connected with the head part, and both the head part and the handle part are made of porous components. The head part is a side part close to the writing end part, and the handle part is a side part connected with the pen tube and used for sucking ink. The ink has the advantages of fluency in writing, continuous ink supply, uniformity in color development, toughness and durability.

A ballpoint pen tip (40) has a ball (42) and a tip body (60) for holding the ball, and a first inclined surface (71) and a second inclined surface (72) disposed behind the first inclined surface are provided on an outer peripheral surface (70) of the tip body. In a cross-section including the central axis, the first inclined surface extends linearly obliquely with respect to both the axial direction (da) and the radial direction so as to face the outside in the radial direction (dr) as the rearward direction, and in a cross-section including the central axis, the second inclined surface extends linearly obliquely with respect to both the axial direction and the radial direction so as to face the outside in the radial direction as the rearward direction. The rear end (71b) of the first inclined surface and the front end (72a) of the second inclined surface are connected to each other, and the angle ([theta] 2) between the second inclined surface and the central axis is larger than the angle ([theta] 1) between the first inclined surface and the central axis.

To provide a pen point for a direct liquid type writing brush pen which has a proper hardness, can obtain a writing feeling equivalent to that of a pen point for a general direct liquid type writing brush pen, and can withstand a repeated knocking operation when used for the direct liquid type writing brush pen of a type in which a valve mechanism is operated by the knocking operation to exude ink to the pen point, and the direct liquid type writing brush pen using the same.SOLUTION: This pen point is used for a direct liquid type brush pen equipped with a valve mechanism and is formed by bundling fibers consisting of nylon resins to form a fiber bundle, bonding and solidifying the fiber bundle with a synthetic binder to make the fiber bundle rod and cutting the fiber bundle into a desired shape. Preferably, the thickness of the fiber is in the range of 0.5 to 5 denier, and the porosity calculated from the following formula is 70 to 80%. Porosity = (1-weight / circular constant * radius 2 * length * specific gravity) SELECTED DRAWING: Figure 1

The invention relates to the technical field of pens, in particular to a pen with a pure gold pen nib, which comprises a pen tongue, an embedding groove is arranged at the top of the pen tongue, the arrangement direction of the embedding groove is consistent with that of the pen tongue, the embedding groove is communicated with the front end of the pen tongue, and an ink guide groove is arranged on the groove wall of the embedding groove; the pure gold pen point covers the pen tongue, a protrusion matched with the embedded groove is formed on the pure gold pen point and corresponds to the embedded groove, the protrusion is embedded in the embedded groove, a part of the protrusion extends out of the embedded groove and is connected with the tip end of the pure gold pen point, and an ink guide seam is formed in the bottom face of the part, extending out of the embedded groove, of the protrusion. And the ink guide seam is communicated with the tip of the pure gold pen point and the ink guide groove in the embedding groove. According to the pen with the pure gold pen point, the pure gold pen point is supported through the pen tongue, the structural stability of the pure gold pen point is improved, in addition, the protrusion is arranged on the pure gold pen point, the thickness of the pure gold pen point is increased through the protrusion part, the strength of the pure gold pen point is improved by increasing the thickness, and deformation of the pure gold pen point is avoided.

To provide an oil-based ink composition for a ball-point pen capable of obtaining good handwriting with good writing feeling even in writing at a high speed or at a high writing pressure while effectively suppressing ink leakage, and hardly causing strike-through, and to provide a ball-point pen.SOLUTION: A ballpoint pen refill for an oil-based ballpoint pen includes an ink reservoir tube, an oil-based ink composition filled in the ink reservoir tube, and a ballpoint pen tip attached to a front end portion of the ink reservoir tube and configured to supply the oil-based ink composition, wherein the oil-based ink composition contains a first phosphoric acid ester which is a polyoxyethylene hydrocarbon phosphoric acid ester having a hydrocarbon group having 4 or more and 17 or less carbon atoms, a second phosphoric acid ester which is a polyoxyethylene hydrocarbon phosphoric acid ester having a hydrocarbon group having 18 or more and 24 or less carbon atoms, water, and a nonionic surfactant.SELECTED DRAWING: Figure 1

To provide a knock-type writing instrument capable of ensuring suppression of volatilization of ink from a pen tip at least before the start of use.SOLUTION: A knock-type writing instrument A is configured such that a refill 20 is stored in a barrel 10, ink is discharged from an ink storage member 18 stored in the refill 20 through a capillary phenomenon of a pen tip 30, and the pen tip 30 freely appears / disappears in / from the tip of the barrel 10 by a knock mechanism 70 provided to the barrel 10. In a state where the pen tip 30 is stored in the barrel 10, a through-hole 42 through which the pen tip 30 can slide back and forth is formed in a center. At least a seal member 40 is provided to the outer periphery in the vicinity of the tip side of the pen tip 30.SELECTED DRAWING: Figure 1

The utility model relates to the field of capacitance pens, and discloses a capacitance pen with a replaceable pen point, which comprises a pen holder, a connecting module is fixedly arranged on the lower end surface of the pen holder, a fixing cover is sleeved on the lower end surface of the connecting module in a threaded manner, the pen point is clamped on the inner bottom surface of the fixing cover, and the connecting module comprises a fixing cylinder. A fixing seat is fixedly arranged on the inner top face of the fixing cylinder, a signal column is fixedly arranged on the lower end face of the fixing seat, the pen point comprises a connecting column, and a clamping block is fixedly arranged on the upper end face of the connecting column. According to the pen, the connecting module is fixedly arranged at the lower end of the pen holder and can be in threaded connection with the fixing cover, the pen point can be placed in the fixing cover, the pen point and the pen holder can be connected when the fixing cover and the connecting module are connected, and the main structure of the pen point is provided with the connecting column; the upper end of the connecting column is connected with a clamping block, and the clamping block can be clamped in the fixing block when the pen point is installed.

The smearing tool comprises a hollow penholder (5) and a wrapping core (6) arranged in the penholder (5), and is characterized in that the porous material refill is installed at the open end of the penholder (5) and provided with a head (1) and a handle (2) connected with the head (1); both the head part (1) and the handle part (2) are made of porous components. The invention has the advantages of smooth painting, continuous ink supply, uniform color development, toughness and durability.

To provide a ballpoint pen tip which can prevent a seal member from being unintentionally removed from the ballpoint pen tip, and also allows a user who wants to remove the seal member from the ballpoint pen tip to do so without feeling bothered.SOLUTION: The gist of the present invention is a ballpoint pen tip in which a mirror-like portion 16 having an arithmetic mean roughness Ra of 90 nm or more and 250 nm or less is formed on the outer wall surface of a ball holder 8, a part of the writing ball protrudes from the front end opening and is prevented from slipping out of the front end opening by a crimped portion and is rotatably arranged within the ball holder, and a resin sealing member 17 which is a hot melt agent is arranged at the front end of the ballpoint pen tip so as to cover part of the front end of the ballpoint pen tip and include at least part of the mirror-like portion.SELECTED DRAWING: Figure 5

A writing tip assembly for dispensing a free-flowing low-viscosity ink from a writing instrument may include a micro-spring, a writing ball configured to transfer ink to a substrate, and a second ball between the writing ball and the micro-spring. The second ball is configured to transfer ink to the writing ball. A writing instrument for dispensing a free-flowing low-viscosity ink includes an ink reservoir, the writing tip assembly, and a feeder fluidically coupling the ink reservoir to the writing tip assembly.

A writing instrument (10) is provided with: a shaft tube (15); a pen point member (50) having a writing part (52) on which handwriting is formed; and a holding member (70) that is attached to the shaft tube (15) and holds the pen point member (50), the holding member (70) having: a plurality of ribs (71) that protrude inward and come into contact with the pen point member (50); and a plurality of claw parts (80) extending rearward and disposed outside the pen point member (50), the claw parts (80) being deformed inward and coming into contact with the pen point member (50) in a state in which the holding member (70) is attached to the shaft tube (15), and the movement of the pen point member (50) in the axial direction (da) relative to the holding member (70) being restricted.

This aqueous ink composition for writing instruments has an aqueous phase and an oil phase dispersed in the form of an oil-drop-in-water emulsion with respect to the aqueous phase, the oil phase and / or the aqueous phase contains a coloring material, the oil phase contains a deoxidant, and the content rate of the deoxidant is 3% by mass or more with respect to the mass of the oil phase. The content of the oxygen scavenger in the aqueous phase is 1.5 mass% or less with respect to the mass of the aqueous phase.

A ballpoint pen tip (40) comprises a ball (42) and a tip body (50) that holds the ball (42). The tip body (50) has a ball holding chamber (52) that holds the ball (42) and a crimping part (60) that prevents the ball (42) from coming out of the ball holding chamber (52). The ball holding chamber (52) includes a ball receiving base (56) that receives writing pressure from the ball (42) during writing. The outer peripheral surface (65) of the tip body (50) and the ball receiving base (56) have a nitride layer (70) formed thereon, and a thickness (T3) of the nitride layer (70) on the front end surface (63) of the crimping part (60) is greater than a thickness (T4) of the nitride layer (70) on the ball receiving base (56).

To provide an applicator provided with a chip-proof brush tip which can be held together properly, which can solve the problem that in an applicator which is disclosed, ribs extend to a vicinity of an opening part at a front end of a fixed tube and therefore the ribs contact the vicinity of a front end of a brush tip, so that portions contacting the ribs cause the brush tip to be broken, which makes it difficult to hold the brush tip together.SOLUTION: In an applicator according to the present invention, a plurality of ribs extending along a longitudinal direction of a fixed tube are formed on an inner wall surface of the fixed tube and the ribs are not extended to a front end part of the fixed tube.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of gel pens, in particular to a needle tube double-ball pen point which comprises a first needle tube head, the lower end of the first needle tube head is fixedly connected with a second needle tube head, a clamping groove is formed in the lower end of the second needle tube head, a second ball is rotationally connected into the clamping groove, and a supporting mechanism is arranged in the first needle tube head and the second needle tube head. The supporting mechanism comprises three sets of first abutting rings, a buffering cushion, three sets of second abutting rings, an ink guiding core, two sets of first supporting springs, second supporting springs and a third abutting ring. The ink guiding core is slidably connected with the inner sides of the second abutting rings. The supporting mechanisms are installed in the first ink guiding hole and the second ink guiding hole, the ink guiding core penetrates through the inner sides of the supporting mechanisms, the side face of the ink guiding core is supported through the supporting mechanisms, the ink guiding core is prevented from being broken, and the use safety of the ink guiding core is improved.

1. A writing instrument (10) configured to emit light to change the appearance of a substrate (52) including at least one photochromic material, the writing instrument (10) comprising: an elongated body portion (12) that allows a user to grip the writing instrument, the body portion including a proximal end (P) and a distal end (D); a first light source (16) configured to emit light from the proximal end, the emitted light including at least a first color component within a first wavelength range (65), the first wavelength range corresponding at least in part to a deactivation spectrum of a first photochromic material (62Y) of the substrate (52); and a controller (18) configured to receive input from a user and generate a signal to control the first light source based on the received user input.

To provide a refill capable of suppressing DC phenomena at a high level, and a writing instrument equipped with said refill. [Solution] A filter having an average pore size within a specific range is placed in the refill, and an ink composition having a viscosity within a specific range is filled in. Specifically, the refill, which is attached to a writing instrument, comprises at least a tip and a cylindrical ink container connected to the tip, wherein the tip and the ink container are filled with an ink composition, the ink container includes a filter made of a porous material that flows through the ink composition and is positioned perpendicular to the direction in which the ink composition follows, the filter has an average pore size of 0.01 μm to 9 μm as measured by the half-dry method, and the ink composition has a shear rate of 380 sec. -1 The refill has a viscosity of 5 to 90 mPa·s.

To provide a writing instrument having a pen tip having a maximum effective area of a visual recognition portion capable of visually recognizing the writing direction with respect to the entire pen tip without impairing the ink outflow property.SOLUTION: The writing instrument A includes a pen tip 20 having a visual recognition portion that guides ink supplied from a writing instrument main body 10 and can visually recognize the writing direction. The pen tip 20 has a holding body 40 having at least a visual recognition portion, and a writing portion 25 that attaches a writing core 30 having a U-shaped or L-shaped outer shape to the holding body 40. The portion of the writing core 30 that comes into contact with the side surface of the holding body 40 has a rectangular cross section.SELECTED DRAWING: Figure 1

To provide an ink refill provided with a ball-point pen tip which suppresses deterioration of writing feeling and has less influence on the inner circumference of a crimped portion.SOLUTION: There is provided an ink refill including a first tapered surface at the tip of the holder that accommodates the writing ball, a connecting surface with an angle of greater than 180° measured outside the first tapered surface, and a ball-point pen tip including a first shoulder portion that is a boundary between the first tapered surface and the connecting surface and a second tapered surface with an angle of less than 180° measured outside the connecting surface and a crimped portion where the tip of the second tapered surface is crimped inward, and an ink storage tube in which ink is stored. A relationship of (A×B×108) / (C×D×E5)<8 is established in Volume A (mm3) of the annular portion outside the imaginary tangent line between the first shoulder portion and the writing ball, area B (mm2) of the gap between the writing ball and the crimped portion when viewed from the tip, ink surface tension C (mN / m), longitudinal elastic modulus D (GPa) of the holder and diameter E (mm) of the writing ball.SELECTED DRAWING: Figure 3

The application discloses a flexible writing pen, which comprises a pen core and a pen shell, the pen core comprises an ink outlet core, an ink storage tube and a connecting seat, the pen shell comprises a pen barrel and a supporting seat, a containing cavity is formed between the pen barrel and the supporting seat, the pen core is arranged in the containing cavity, the connecting seat comprises a supporting column, the supporting column comprises a plurality of column bodies which are connected in an axial direction, according to the different wall thickness, the plurality of column bodies can be divided into at least two parts, the wall thickness of one part of the column bodies is larger than that of the other part of the column bodies, the column bodies which are adjacent in the axial direction are connected through a plate, a plurality of plates which are located between the adjacent column bodies are arranged in an interval along the axial direction of the supporting column, the ink outlet core is arranged on the supporting column and is connected with the ink storage tube through an inner hole of the supporting column, the front end of the supporting seat comprises at least two elastic claw arms, and all the elastic claw arms are arranged in an interval along the circumferential direction of the pen and around the connecting seat. The flexible writing pen can improve the elastic deformation effect of the front end of the pen core.

A ballpoint pen (10) includes a ballpoint pen tip (30), the ballpoint pen tip (30) includes a pipe (40) including a deformed portion (42) and a ball holding chamber (46) formed in front of the deformed portion (42), a ball (32) disposed in the ball holding chamber (46), a center core (50) at least a part of which is disposed in the pipe (40), a gap (34) formed between the ball (32) and a front end (57) of the center core (50), and an ink channel (60) formed between the center core (50) and the pipe (40), in which the ballpoint pen tip (30) includes a first region (A1) and a second region (A2) positioned to the rear of the first region (A1), and a cross-sectional area of the ink channel (60) in the first region (A1) is larger than a cross-sectional area of the ink channel (60) in the second region (A2).

Provided is a writing implement in which the pen tip is supported in a tiltable manner so that the entire pen tip makes contact with a paper surface, and which makes it possible to relatively easily draw a straight line as intended.　The front portion of the pen tip extends in a linear direction that is tilted at an acute angle with respect to the axis direction in a side view, and the cross section of the front portion of the pen tip with respect to the extending direction has a substantially rectangular shape. A holding member has a holding portion that surrounds at least a part of the front portion of the pen tip. The holding portion has openings that are provided on both longer dimension sides of the substantially rectangular cross section of the front portion of the pen tip. The vertex portion of the pen tip is formed to be substantially straight in a side view, and is substantially perpendicular to the extending direction of the front portion of the pen tip. The back end edge of each of the openings is formed to be substantially straight in a side view, and is substantially parallel to the vertex portion of the pen tip. The holding portion has an extending piece that extends in a direction substantially parallel to the extending direction of the front portion of the pen tip and that is provided on a shorter dimension side of the substantially rectangular cross section of the front portion of the pen tip, said shorter dimension side being on the inner side in a side view.

Provided is a ballpoint pen (1) including: a first caulking part (14a) in which the ink viscosity of an ink composition for an oil-based ballpoint pen is in a range of 500 mPa·s to 15,000 mPa·s at 20 °C and at a shear rate of 500 sec-1, the ball diameter of a ball (20) is 0.5 mm or less, and a chip tip part (13) has an inclination (α) of 90 degrees to 100 degrees; and a second caulking part (14b) that is provided closer to a tip side of a ballpoint pen chip (11) than the first caulking part (14a) and has an inclination angle of 110 degrees to 130 degrees, wherein an angle (γ) of a bottom wall (19) of a ball holding chamber (15) is the same as the inclination angle of the second caulking part (14b).

A ballpoint pen head is provided with: a cylindrical holder having a ball seat therein, the tip of the holder being configured from a pressing part having a diameter reduced toward the inside; a first tapered surface formed on the outer periphery of the holder, the tip of the first tapered surface being tapered; a second tapered surface having a tapered tip, which is formed on the outer periphery of the holder at a position closer to the tip side of the holder than the first tapered surface, and has a taper angle of 60 degrees or more and greater than the taper angle of the first tapered surface; a third tapered surface which is formed on the outer periphery of the pressing part, is connected to the second tapered surface, and has a tapered angle larger than that of the second tapered surface; and a writing ball which is accommodated in the ball seat in a state in which a part of the writing ball protrudes from the front end of the holder, and the protruding amount of the writing ball protruding from the front end of the holder is 25% or more of the diameter of the ball.