WO2012086574A1 - Stylo à bille et pointe de stylo pour stylo à bille - Google Patents

Stylo à bille et pointe de stylo pour stylo à bille Download PDF

Info

Publication number
WO2012086574A1
WO2012086574A1 PCT/JP2011/079320 JP2011079320W WO2012086574A1 WO 2012086574 A1 WO2012086574 A1 WO 2012086574A1 JP 2011079320 W JP2011079320 W JP 2011079320W WO 2012086574 A1 WO2012086574 A1 WO 2012086574A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball
tip
ink
opening
house
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/079320
Other languages
English (en)
Japanese (ja)
Inventor
中谷　泰範
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sakura Color Products Corp
Original Assignee
Sakura Color Products Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sakura Color Products Corp filed Critical Sakura Color Products Corp
Priority to CN201180067648.5A priority Critical patent/CN103384602B/zh
Publication of WO2012086574A1 publication Critical patent/WO2012086574A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/16—Writing inks
    • C09D11/18—Writing inks specially adapted for ball-point writing instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds
    • B43K1/082—Balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds
    • B43K1/084—Ball beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds
    • B43K1/086—Nibs; Writing-points with ball points; Balls or ball beds with resilient supporting means for the ball, e.g. springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00—Ball-point pens
    • B43K7/02—Ink reservoirs; Ink cartridges
    • B43K7/03—Ink reservoirs; Ink cartridges pressurised, e.g. by gas

Definitions

  • the present invention relates to a ballpoint pen, and more particularly to a ballpoint pen that uses ink containing solid components such as glass flakes and metal foil powder.
  • the present invention also relates to a pen tip for a ballpoint pen used in the above-described ballpoint pen.
  • the ink storage portion is formed of an easily deformable container, a hole is provided at the tip of the ink storage portion, and the ink is pressed from the small hole at the tip by pressing the ink storage portion with a finger.
  • the structure is adopted.
  • the above-described applicator (decoration pen) has a large diameter hole at the tip in order to discharge a large amount of ink.
  • the diameter of the hole at the tip is designed to be about 2.0 mm. Therefore, the decoration pen is not suitable for writing fine characters and designs.
  • decoration pens when characters with a large number of strokes, such as kanji, or small characters are written, adjacent lines are connected to form one ink reservoir, and the characters are crushed.
  • the ball-point pen-type applicator is also unsuitable for writing fine characters and designs because the writing ball has a large diameter. That is, in a pen-shaped applicator that can draw a raised pattern, the writing ball has a diameter of 1.0 mm or more, and it is adjacent when writing a large number of strokes such as kanji or small characters. The lines are connected to form a single ink reservoir, and the characters are crushed.
  • ballpoint pens have been developed in which solid ingredients such as glass flakes and metal foil powder (pearl color and pearl pigment) are blended in the ink and ink with a glittering shine is built in.
  • Patent Literature 1 is disclosed.
  • the gap between the inner wall of the ball house and the writing ball is wider than that of a normal ballpoint pen so that the solid component does not clog the pen tip, and the diameter of the writing ball is 1.0 mm or more.
  • this type of ballpoint pen is also unsuitable for writing characters with a large number of strokes such as kanji and small characters.
  • Characters that are three-dimensionally raised like the above-mentioned decoration pen can be written, and letters with a glittering shine like the ballpoint pen disclosed in Patent Document 1 can be written.
  • Commercialization of a ballpoint pen that can write a pattern is desired by general users. That is, it is desired to develop a ballpoint pen that is a rising line, a bright line, and a thin line. However, it is necessary to design the writing ball to have a large diameter in order to draw a rising line or a bright line, whereas in order to draw a thin line, it is necessary to design the writing ball to have a small diameter. There will be a contradictory situation. Therefore, it has been difficult to commercialize the ballpoint pens desired by general users as described above.
  • the present invention can write a three-dimensionally raised character and the like, can write a character with a brilliant shine, etc., and can write fine characters and designs, and for the ballpoint pen
  • the purpose is to provide a nib tip.
  • the present inventors have made various types of ballpoint pens.
  • the method of pressurizing the ink is effective for deriving the ink having a high viscosity of about 20,000 millipascal seconds (mPa ⁇ s) from the pen tip for the ballpoint pen. That is, as a measure for smoothly deriving high-viscosity ink from a ballpoint pen nib tip containing a writing ball having a general diameter, the ink filled in the ink storage unit is brought into a pressurized state, It has been found that a method of pushing ink out of the nib tip with pressure is effective.
  • the central axis of the spring is not stable and the pressure of the writing ball becomes unstable. That is, it is necessary for the writing ball to firmly block the tip opening of the ball house so that the pressurized ink does not leak.
  • a groove called an arrow groove is provided in the bearing surface portion of the ball house. For this reason, when the tip of the spring fits into the arrow groove, the tip of the spring leaves the center and fits into the gap between the writing ball and the chip. As a result, the writing ball cannot be rotated and the tip opening cannot be sealed.
  • the invention completed through the above-described examination and trial production has an ink storage part in which ink is stored in a pressurized state, and a pen tip chip connected to the ink storage part, and the pen tip chip is a chip body.
  • the chip body includes a ball house, a tip opening, and an ink conduction hole, and the tip opening is on the tip side of the ball house and communicates with the inside and outside of the ball house
  • the ink conduction hole opens at the inner surface of the rear end side of the ball house and communicates the inside and outside of the ball house.
  • the ink conduction hole is narrowed in the vicinity of the opening to the ball house to a small diameter.
  • the seat part has a seat part centered on the opening of the ink conduction hole, and the seat part has two or more grooves communicating with the ink conduction hole, and the writing ball is in the ball house.
  • the spring is in the ink conduction hole and presses the writing ball toward the tip opening side, the ink includes a solid component, and the writing ball has a diameter.
  • the inner diameter of the ball house is larger than the outer diameter of the writing ball by 50 micrometers ( ⁇ m) or more, both of the grooves are bottomed, and the ball house side and the ink conduction hole Opening both on the inner surface side, and at least two of the grooves have an opening width of 0.2 mm or more with respect to the ball house side, and when the ball is installed in the center of the seat, the ball is blocked by the ball.
  • the area projected to the ball house side without being viewed from the tip opening side is 0.02 mm 2 or more for each of the two grooves,
  • a ballpoint pen characterized in that an opening projected area on the inner surface side of the ink conduction hole is 0.02 square millimeters or more.
  • the ballpoint pen of the present invention has a small writing ball of less than 1.0 mm. Therefore, a thin line can be drawn.
  • the ink is pressurized, and a large gap is secured between the writing ball and the ball house.
  • the ballpoint pen of the present invention has a large groove (so-called arrow groove) communicating with the ink conduction hole in the ball house. Therefore, high-viscosity ink and glittering pigment (solid component) having large particles can be smoothly derived from the opening at the tip.
  • the width of the groove communicating with the ink conduction hole (so-called arrow groove) is wide, and the opening area opened on the ball house side of the groove and the opening area opened on the inner surface side of the ink conduction hole are both large. Since it is ensured, even if it is a luster pigment (solid component) with a large particle, it does not clog the said groove
  • the groove (so-called arrow groove) is long, and a portion that opens to the ball house side without being blocked by the ball is secured in a state where the writing ball is installed at the center of the seat.
  • ink is supplied directly from the groove (so-called arrow groove) to the gap between the ball and the inner wall of the ball house.
  • the ball pen of the present invention has a bottomed groove communicating with the ink conduction hole, the tip of the spring does not enter the groove of the seat, and the spring tip does not fit into the gap between the writing ball and the chip. Therefore, the writing ball is stably pressed.
  • the ballpoint pen of the present invention it is possible to write a three-dimensionally raised character and the like, and to write a character with a glittering radiance, and to write a finer character or design.
  • adopted by this invention is less than 1.0 mm, the diameter of the more recommended writing ball is 0.8 mm or less.
  • the invention according to claim 2 is the ballpoint pen according to claim 1, wherein the diameter of the writing ball is 0.3 mm or more.
  • the invention according to claim 3 is the ballpoint pen according to claim 1 or 2, characterized in that the grooves are formed in two lines and are opposed to each other across the ink conduction hole.
  • the groove width can be designed wide.
  • the invention according to claim 4 is the ballpoint pen according to claim 1 or 2, characterized in that the groove is formed in three stripes and is formed radially with the ink conduction hole interposed therebetween.
  • the groove of the ballpoint pen of the present invention is three, it is possible to ensure a large total area of the groove and a large total area of the portion opened to the ball house without being blocked by the ball of the groove. Can be smoothly introduced into the ball house.
  • the invention according to claim 5 is a pen tip for a ballpoint pen that is attached to an ink storage portion in which ink is stored in a pressurized state, and includes a chip body, a writing ball, and a spring, and the chip body Comprises a ball house, a tip opening, and an ink conduction hole, and the tip opening is located on the tip side of the ball house and communicates with the inside and outside of the ball house. It opens to the inner surface of the side and communicates the inside and outside of the ball house.
  • the ink conduction hole is narrowed in the vicinity of the opening with respect to the ball house to a small diameter, and the seat part is centered on the opening of the ink conduction hole in the ball house.
  • the writing ball has a diameter of less than 1.0 mm, and the inner diameter of the ball house is It is larger than the outer diameter of the writing ball by 50 micrometers ( ⁇ m) or more, both of the grooves are bottomed, open on both the ball house side and the ink conduction hole inner surface side, and at least 2 of the grooves
  • the groove groove has an opening width of 0.2 mm or more with respect to the ball house side, and the portion that opens to the ball house side without being blocked by the ball in the state where the ball is installed at the center of the seat portion
  • the projected area as viewed from the top is 0.003 square millimeters or more for each of the two grooves, and the projected area on the inner surface of
  • a ball-point pen that can write three-dimensionally raised characters and the like, can write sparkling characters, etc., and can further write fine characters and designs, and the ball-point pen A nib tip can be provided.
  • FIG. 4 is an enlarged perspective view of a tip opening portion of a nib tip in a state where a ball is removed from the nib tip shown in FIG. 3. It is a partially broken perspective view of the nib tip of the ball-point pen of FIG. (A) is a front view of a nib tip of the ballpoint pen of FIG.
  • FIG. 1 is the front view which abbreviate
  • FIG. 4B is a cross-sectional view taken along the line -B
  • FIG. 3D is a cross-sectional view taken along the line CC in FIG. 3A
  • FIG. 4B is a cross-sectional view taken along the line -B
  • FIG. 3D is a cross-sectional view taken along the line CC in FIG. 3A
  • FIG. 9C is an enlarged view of FIG. 7C, and is a cross-sectional view taken along the line AA of the nib tip of FIG. 8, illustrating a state where the ball of the nib tip is removed.
  • FIG. 9 is a cross-sectional view taken along the line BB of the nib tip of FIG.
  • FIG. 9 is an enlarged view of FIG. 6C, which is also a cross-sectional view taken along the line CC of the nib tip of FIG. 8, and is a cross-sectional view taken along the maximum diameter portion of the writing ball.
  • FIG. 16 is a cross-sectional view taken along line AA of FIG. It is a cross-sectional perspective view of the ball house employ
  • the ballpoint pen 1 is called a refill, and is usually used by being placed in a cylindrical holder or the like.
  • the upper side (the pen tip side of the ballpoint pen) in FIG. 1 is described as the front end side, and the lower side is the rear end side, and the longitudinal direction of the ballpoint pen 1 is defined as the “vertical direction”. Is “horizontal”.
  • a ballpoint pen 1 shown in FIGS. 1A and 1B includes a nib tip 2, a nib 3, and an ink storage unit 4.
  • the ink storage unit 4 is a member for storing ink (not shown) and occupies most of the ballpoint pen 1. As shown in FIGS. 1A and 1B, the ink storage portion 4 has an elongated cylindrical shape. The interior of the ink storage unit 4 is a cavity. That is, the ink storage unit 4 is an elongated tube. The front end side of the ink storage portion 4 is joined to the tip plug 3, and the collar portion 39 is provided on the rear end side of the ink storage portion 4 so that ink stored in a pressurized state by gas or the like does not jump out. Is provided.
  • the ink containing unit 4 is filled with ink containing a solid component in a pressurized state.
  • the solid component is the luster pigment 40 or the like.
  • the ink used for the ballpoint pen 1 of the present embodiment is a water-based ink having thixotropy, and as the glitter pigment 40, glass flake pigment, metal-coated inorganic pigment, multilayer film powder, metal foil powder or metal-coated resin film powder. Containing at least one of the following.
  • a luster pigment 40 includes particles having a flat shape, and includes particles having a very large particle diameter (full length).
  • the ink having thixotropy is an ink having a property that the viscosity changes due to shear applied to the ink. That is, the ink has a high viscosity in a static state such as the inside of the ink storage unit 4, and when the ink has fluidity as in the case where the ball 15 rotates in the nib tip 2, 10 mm It has the property of having a much lower viscosity such as Pascal second (mPa ⁇ s) or less.
  • a water-soluble ink to which a gelling agent having thixotropy is added is generally referred to as a water-soluble gel ink.
  • the preferred viscosity range of the ink composition of this embodiment is 20,000 to 30,000 millipascal seconds (mPa ⁇ s).
  • the ink composition of the present invention is adjusted to such a viscosity range.
  • This viscosity is a value measured with an ELD viscometer (3 ° R14 cone, rotation speed: 0.5 rpm, 20 degrees Celsius).
  • the ink in the ink storage unit 4 is pressurized from 80 kilopascals to about 120 kilopascals.
  • the nib tip 2 and the nib 3 are fitted with the rear end side of the nib 3 at the tip of the ink containing portion 4.
  • the rear end side is fitted.
  • the nib tip 2 has a ball 15 (writing ball), and a spring 11 is accommodated inside the nib tip 2 and the tip 3.
  • the spring 11 is an urging member for urging the ball 15 outward from the nib tip 2.
  • the spring 11 has a coil shape wound in a spiral shape as a whole and has a biasing force, and the distal end portion 33 of the spring 11 is not a spiral but a straight shape.
  • the spring 11 is located across the ink conduction hole 12 of the nib tip 2 and the ink conduction hole 13 of the tip 3, and the rear end side of the spring 11 is in contact with the step portion 6 of the tip 3. , Is locked to the stepped portion 6.
  • the tip portion 33 of the spring 11 is in contact with the ball 15 through an ink conduction hole 12 to be described later, and presses the ball 15 outward from the nib tip 2. Therefore, the tip 15 of the nib tip 2 is forcibly sealed by the ball 15 to prevent ink leakage.
  • the tip plug 3 is a connecting member for connecting the nib tip 2 to the ink containing portion 4, and the outer shape thereof is a short cylindrical shape.
  • the inside of the tip plug 3 is hollow and has an ink conduction hole 13 for conducting ink from the ink containing portion 4 to the pen tip chip 2.
  • a step portion 6 having a diameter smaller than that of the other portion of the tip plug 3 is provided on the rear end side inside the tip plug 3, and the spring 11 is locked by the step portion 6.
  • the nib tip 2 has a substantially cylindrical shape as a whole, but the tip portion 14 has a tapered shape, and is a member provided with a ball 15 for writing letters and symbols.
  • the inside of the nib tip 2 is hollow and has an ink conduction hole 12 for conducting ink from the nib 3 to the nib tip 2.
  • the ink conduction hole 12 communicates with the ink conduction hole 13 of the tip 3.
  • the tip portion 14 of the nib tip 2 has a tip opening 18, and the ball 15 is provided so that a part of the ball 15 is exposed from the tip opening 18. ing.
  • the tip opening 18 is constricted from other portions of the tip 14 so that the ball 15 does not jump out of the nib tip 2.
  • a ball house 16 that is a space surrounded by an inner wall 17 is provided inside the distal end portion 14. That is, the ball house 16 is a space surrounded by a cylindrical inner wall 17, and the seat portion 20 is located at a portion corresponding to the bottom thereof. Further, as shown in FIGS. 5, 7, and 9, the seat portion 20 is provided with two grooves (arrow grooves) 24. A central hole 30 is opened at the center of the seat portion 20.
  • the central hole 30 is a through hole having a circular cross-sectional shape and is a space surrounded by the central hole wall 31.
  • the central hole 30 is a part of the ink conduction hole 12, and is a portion in which the vicinity of the opening of the ink conduction hole 12 with respect to the ball house 16 is narrowed to a small diameter. Accordingly, the central hole 30 communicates with both the ball house 16 side and the ink conduction hole 12.
  • the central hole 30 also functions as a hole for inserting the distal end portion 33 of the spring 11, and guides high-viscosity ink (not shown) containing the bright pigment 40 from the ink conduction hole 12 to the ball house 16. It also functions as a hole.
  • the central hole 30 is larger than the outer diameter of the distal end portion 33 of the spring 11 and is narrowed to a smaller diameter than the ball house 16. Accordingly, the central hole 30 is not blocked by the tip portion 33 of the spring 11, and does not prevent the ball 15 from being pressed by the tip portion 33 of the spring 11.
  • the seat 20 is a part that forms the bottom of the ball house 16 as described above. As shown in FIGS. 5, 7, and 9, the seat portion 20 has two arrow grooves 24. In other words, the arrow groove 24 extends in the facing direction starting from the central hole 30. And the end edge of each of the two thread grooves 24 reaches the peripheral end of the seat portion 20. That is, the end of the arrow groove 24 reaches the inner wall 17 of the ball house 16.
  • the width of the arrow groove 24 is wider than that of a normal ball-point pen tip, and the seat portion 20 remains only at the edge portion. Therefore, in the present embodiment, the ball holding portion with which the ball 15 abuts only leaves the crescent-shaped side 21 as shown in FIGS. That is, in this embodiment, the seat 20 has a crescent-shaped side 21, and when writing a character or a pattern with the ballpoint pen 1, the side 21 and the ball 15 come into contact with each other, and the ball 15 can be rotated. To support. When the ballpoint pen 1 is not used, the ball 15 is slightly lifted by the urging force of the spring 11. In FIG. 5, the seat portion 20 appears to be a flat shape for the convenience of drawing, but actually has a tapered shape. Therefore, the seat portion 20 is higher than the central hole wall 31 in the vertical direction by the height of the seat portion wall 22.
  • the arrow groove 24 is a groove with a bottom, is a space surrounded by the inner wall 17, the seat wall 22, and the bottom 26, and is provided in the ball house 16.
  • two arrow grooves 24 are provided. That is, the arrow grooves 24 are provided in a radial pattern with the center hole 30 as the center, and the two arrow grooves 24 are arranged linearly with the center hole 30 in between.
  • this invention does not limit the number of streak of a gutter
  • the arrow groove 24 is a lead-out path for leading high-viscosity ink (not shown) containing the luster pigment 40 from the central hole 30 to the tip opening 18, similarly to the known one.
  • the arrow groove 24 has a bottom and is a non-penetrating groove from the ball house 16 side to the rear end side of the ball-point pen tip, so that the tip portion 33 of the spring 11 does not enter and the ball 15 is inserted into the seat portion 20. Even in the arranged state, it is not blocked by the ball 15.
  • the width W of the arrow groove 24 is determined by the lateral width W of the bottom 26 of the arrow groove 24 (FIG. 9). In the present embodiment, the width W of the arrow groove 24 is constant.
  • the ball 15 is a sphere for writing letters and designs, and is the main component of the ballpoint pen 1. As shown in FIG. 3, a part of the ball 15 is exposed from a tip opening 18 that is an opening of the ball house 16. As shown in FIG. 8, the ball 15 is rotatably held in the ball house 16. The ball 15 is slightly smaller than the ball house 16 and sufficiently larger than the central hole 30 of the nib tip 2.
  • FIGS. 3 and 6A the tip portion 14 of the nib tip 2 containing the ball 15 is partially exposed from the tip opening 18 in front view. As shown in b), only the ball 15 is visible inside the tip opening 18 in plan view.
  • FIG. 6C and FIG. 11 are cross-sectional views in a state where the nib tip 2 is broken at the maximum diameter portion of the ball 15. As shown in FIG. 6C and FIG. 11, even when the ball 15 is cross-sectioned with the maximum diameter, the arrow groove 24 and the seat 20 are clearly visible, and the total length of the two arrow grooves 24 is , Larger than the diameter of the ball 15.
  • FIG. 6C and FIG. 11 are cross-sectional views in a state where the nib tip 2 is broken at the maximum diameter portion of the ball 15.
  • the arrow groove 24 and the seat 20 are clearly visible, and the total length of the two arrow grooves 24 is , Larger than the diameter of the ball 15.
  • FIG. 6C and FIG. 11 are cross-sectional views in a state where the nib tip 2
  • FIG. 10 is a cross-sectional view taken along the contact point between the ball 15 and the seat portion 20.
  • FIG. 6D is a cross-sectional view broken at a portion further below the lowermost portion of the ball 15.
  • the entire bottom 26 constituting the arrow groove 24 is visible.
  • the central hole 30 is also visible. In other words, the central hole 30 and the arrow groove 24, and the arrow groove 24 and the ball house 16 communicate with each other without being blocked by the ball 15, and the ball house 16 is not blocked by the ball 15. .
  • FIG. 6E is a cross-sectional view broken at a further lower portion of the ball 15. In the cross-sectional portion of FIG. 6E, the arrow groove 24 does not exist.
  • FIGS. 7A to 7E show the tip 14 of the ball 15 and the spring 11 which are not shown, and correspond to the positions of FIGS. 6A to 6E, respectively.
  • 6B to 6E the central hole 30 can be seen.
  • the inner diameter of the central hole 30 is smaller than the ball house 16 and the ink conduction hole 12, and the central hole 30 communicates with both the ink conduction hole 12 and the arrow groove 24.
  • the inner diameter a of the central hole 30 is about half to two-thirds of the diameter of the ball 15, and the height (length) Z of the central hole 30 is more than half of the diameter of the ball 15.
  • the diameter b of the spring 11 is 0.008 mm to 0.14 mm, and the difference between the inner diameter a of the central hole 30 and the diameter b of the spring 11 is about half that of the central hole 30.
  • the movable range of the spring 11 in the horizontal direction is limited.
  • the movable range of the spring 11 in the height direction largely depends on the size of the ball 15, but even if the spring 11 is pressed from the ball 15, the spring 11 is pressed to a position equal to or higher than the height Z of the central hole 30. No, the tip 33 of the spring 11 does not come off from the central hole 30. That is, the movable range of the spring 11 in the height direction is limited to the axial backlash range that is the movable range of the ball 15.
  • two arrow grooves 24 are provided on the seating surface of the seat portion 20. As described above, the arrow groove 24 is bottomed and opens to both the ball house 16 side and the central hole 30 (ink conduction hole). Even in the state where the ball 15 is disposed in the central hole 30, the arrow groove 24 is not blocked by the ball 15.
  • FIG. 10 is a cross-sectional view taken along the line BB of the nib tip of FIG. 8, and shows a cross-sectional view at the contact point between the ball 15 and the seat portion 20.
  • the arrow groove 24 is displayed in black solid.
  • the arrow groove 24 is not blocked by the ball 15 even when the ball 15 is disposed in the central hole 30.
  • the orthographic projection area seen is 0.02 mm @ 2 (square millimeter) or more for each of the two grooves. More desirably, it is 0.04 mm @ 2 (square millimeter) or more.
  • the lateral width W of the arrow groove 24 is wider than that of a general ball-point pen, and is about 0.20 mm to 0.50 mm, more preferably 0.25 mm to 0.45 mm. is there.
  • the arrow groove 24 has a bottom, and the depth V of the arrow groove 24 is about 0.20 mm to 0.60 mm, which is substantially half of Z, with respect to the thickness Z of the seat portion 20. It is.
  • the orthographic projection area S1 viewed from the end opening 18 side of the arrow groove 24 opened to the ball house 16 side is 0.02 mm @ 2 (square millimeters) or more, and the center hole 30 side.
  • the projected opening area S2 of the open arrow groove 24 is also 0.02 mm @ 2 (square millimeter) or more.
  • the projected opening area S2 is also a region indicated by a black solid in FIG.
  • the projection opening area S2 is an area equal to or larger than the regular projection area S1. Accordingly, the arrow groove 24 of the seat portion 20 has an opening area through which high-viscosity ink containing the glitter pigment 40 can be conducted.
  • the ball 15 is a sphere having a diameter d of 0.3 mm to 1.0 mm, and more preferably a sphere having a diameter of 0.5 mm to 0.8 mm.
  • the material of the ball 15 is not particularly limited, and stainless steel, alumina sintered body, zirconia, SiC, WC, and other known materials can be used.
  • the ball 15 is rotatably held in the ball house 16, and a part of the ball 15 is exposed from a tip opening 18 that is an opening of the ball house 16.
  • the exposure amount H of the ball 15 is 30% to 45% of the diameter d of the ball 15 when the center of the ball 15 is located on the central axis of the ball house 16.
  • the ball 15 is supported so as to be able to rotate while abutting against the seat portion 20 when writing a character or a pattern with the ballpoint pen 1.
  • the ball 15 is lifted by the urging force of the spring 11, so that the seat portion 20 and the ball 15 do not contact each other.
  • the ball house 16 is a space surrounded by the inner wall 17.
  • the inner diameter D (FIG. 8) of the inner wall 17 is not less than the size obtained by adding 50 ⁇ m to 100 ⁇ m (micrometers) to the diameter d of the ball 15, and more desirably 50 mm to 80 mm. Accordingly, the diameter d of the ball 15 is 50 ⁇ m (micrometer) or more. That is, when the ball 15 is brought into contact with the seat portion 20, the ball 15 and the ball house 16 are located at the equator (a position perpendicular to the central axis of the ball house 16 and passing through the center of the ball 15). A gap of 25 ⁇ m (micrometers) or more is formed between
  • the end portion of the arrow groove 24 since the end portion of the arrow groove 24 reaches the peripheral end portion of the seat portion 20, the end portion of the arrow groove 24 protrudes from a region where the ball 15 is projected from the upper part. That is, as described with reference to FIG. 11, even when the cross-sectional view cut at the maximum diameter portion of the ball 15 is viewed, the arrow groove 24 looks like a black solid portion.
  • the area of the black solid portion is 0.003 square millimeters or more for each of the two arrow grooves 24.
  • the number of grooves (arrow grooves) 24 is 2.
  • the present invention does not limit the number of grooves 24 to 2, but 3 or It may be the above.
  • the nib tip 50 shown in FIGS. 15 to 17 includes three grooves (arrow grooves) 51.
  • the seat 20 has a mortar shape, but in the nib tip 50 shown in FIGS. 15 to 17, the seat 52 has a medium-high shape. That is, the seat portion 52 of the nib tip 50 protrudes at the center and is recessed toward the periphery.
  • the dimensional relationship between the ball 15 and the ball house 53 and the dimensional bar relationship between the groove (arrow groove) 51 and the ball 15 are the same as in the previous embodiment. That is, in the state where the ball 15 is installed at the center of the seating surface (seat portion 52), the orthographic projection area viewed from the tip opening side of the portion that opens to the ball house 53 side without being blocked by the ball 15 is 3
  • Each groove is 0.02 mm @ 2 (square millimeter) or more. More desirably, it is 0.04 mm @ 2 (square millimeter) or more.
  • the lateral width W of the arrow groove 51 is about 0.20 mm to 0.50 mm, and more preferably 0.25 mm to 0.45 mm. Further, as shown in FIG. 17, the arrow groove 51 is bottomed, and the depth of the arrow groove 51 is about half of the 0.20 mm to 0.60 mm with respect to the thickness of the seat portion 52.
  • the normal projection area S1 viewed from the tip opening 18 side of the arrow groove 51 opened to the ball house 53 side is 0.02 mm @ 2 (square millimeter) or more, and the projection of the arrow groove 51 opened to the central hole 30 side.
  • the opening area S2 is also 0.02 mm @ 2 (square millimeter) or more.
  • the projection opening area S2 is an area equal to or larger than the regular projection area S1.
  • the inner diameter D of the ball house 53 is equal to or larger than the diameter of the ball 15 plus 50 ⁇ m to 100 ⁇ m (micrometers), and more desirably 50 mm to 80 mm. Accordingly, the diameter d of the ball 15 is 50 ⁇ m (micrometer) or more.
  • the inside of the ink storage portion 4 is pressurized and the stopper portion 39 is provided so that the internal pressure does not escape. That is, in the ballpoint pen 1 of the previous embodiment, the inside of the ink storage unit 4 is pressurized with gas.
  • the ink in the ink storage part 4 may be pressurized by mechanically pressing with an elastic body such as a spring.
  • the movable stopper 61 is provided in the ink storage unit 4, and the ink 62 is filled between the movable stopper 61 and the nib tip 2. The movable stopper 61 is pressed against the nib tip 2 by the spring 63 to increase the pressure of the ink 62 in the ink storage unit 4.
  • the projected opening area S2 of the arrow groove 24 that opens to the 30 side will be described based on experimental results.
  • the normal projection area S1 and the projection opening area S2 have a great influence on the extraction of ink from the tip opening 18 of the nib tip 2. That is, there is a problem that the glitter pigment 40 does not pass if the areas of the normal projection area S1 and the projection opening area S2 are extremely small, and if the area is extremely large, the pressurized ink is ejected at once.
  • the evaluation sample of the nib tip 2 was narrowed down to three types A, B, and C, and the experiment was conducted.
  • the orthoprojection area S1 was set to 0.02 mm 2 (square millimeter) or less
  • the projection opening area S2 was set to 0.02 mm 2 (square millimeter) or more.
  • the orthoprojection area S1 was set to 0.02 mm @ 2 (square millimeter) or more
  • the projection opening area S2 was set to 0.02 mm @ 2 (square millimeter) or less.
  • the normal projection area S1 was set to 0.02 mm 2 (square millimeter) or more, and the projection opening area S2 was set to 0.02 mm 2 (square millimeter) or more.
  • Each evaluation sample is classified into 1 (very bad), 2 (bad), 3 (both in three types of items such as three-dimensionality, glossiness, glitter, ease of writing, fine text, and leakproofness. No, it was evaluated on the basis of 6 levels, 4 (good) and 5 (very good).
  • the evaluation results of the experiment are as shown in FIG. As shown in FIG. 19, the evaluation sample A was the lowest 1 (very bad) in all the six types of items, and the evaluation sample B was 3 (not the case) in all the six types of items. On the other hand, the evaluation sample C was 5 (very good) for all six types of items, and the best area could be derived.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Pens And Brushes (AREA)

Abstract

L'objectif de la présente invention est de fournir un stylo à bille au moyen duquel il est possible de dessiner des lettres surélevées de façon stéréoscopique, des lettres brillantes scintillantes et en outre des lettres ou des dessins minuscules, et de fournir également une pointe de stylo pour le stylo à bille. Selon la présente invention, une encre comprend une teneur en matière sèche totale, le diamètre d'une bille (15) est inférieur ou égal à 1,0 mm, le diamètre intérieur d'un logement de bille (16) est supérieur d'au moins 50 micromètres (µm) au diamètre extérieur de la bille (15), et une rainure (24) est dotée d'une face inférieure et est dotée d'ouvertures à la fois du côté du logement de bille (16) et du côté d'un trou de conduction d'encre (12). La présente invention prévoit deux rainures (24) dont les ouvertures du côté du logement de bille (16) sont dotées de largeurs supérieures ou égales à 0,2 mm. En ce qui concerne chacune des deux rainures (24), lorsque la bille (15) est agencée au centre d'un siège (20) : la zone de projection orthographique d'une partie de l'ouverture qui est située du côté du logement de bille (16) et qui n'est pas fermée par la bille (15) est supérieure ou égale à 0,02 millimètre carré, lorsqu'elle est vue depuis le côté de l'ouverture d'extrémité de pointe (18) ; et la zone de projection de l'ouverture du côté du trou de conduction d'encre (12) est supérieure ou égale à 0,02 millimètre carré.
PCT/JP2011/079320 2010-12-20 2011-12-19 Stylo à bille et pointe de stylo pour stylo à bille Ceased WO2012086574A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201180067648.5A CN103384602B (zh) 2010-12-20 2011-12-19 圆珠笔和圆珠笔用笔头尖端

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010283687A JP5808104B2 (ja) 2010-12-20 2010-12-20 ボールペン及びボールペン用ペン先チップ
JP2010-283687 2010-12-20

Publications (1)

Publication Number Publication Date
WO2012086574A1 true WO2012086574A1 (fr) 2012-06-28

Family

ID=46313844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/079320 Ceased WO2012086574A1 (fr) 2010-12-20 2011-12-19 Stylo à bille et pointe de stylo pour stylo à bille

Country Status (3)

Country Link
JP (1) JP5808104B2 (fr)
CN (1) CN103384602B (fr)
WO (1) WO2012086574A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015042733A (ja) * 2013-06-11 2015-03-05 株式会社サクラクレパス 加圧式ボールペン用水性インキ組成物及び加圧式ボールペン
CN105578777A (zh) * 2014-09-29 2016-05-11 深圳市钛克新材料科技有限公司 一种导电笔
US20230398807A1 (en) * 2020-11-16 2023-12-14 Kabushiki Kaisha Pilot Corporation (Also Trading As Pilot Corporation) Ballpoint pen tip, ballpoint pen refill, and ballpoint pen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015042486A (ja) * 2013-07-23 2015-03-05 株式会社サクラクレパス 塗布具
JP6351100B2 (ja) * 2014-07-15 2018-07-04 株式会社サクラクレパス ボールペン
CN106585171B (zh) * 2017-02-07 2018-08-31 昆山恒义亚自动化设备有限公司 一种针管笔芯
JP7113488B2 (ja) * 2018-02-22 2022-08-05 株式会社トンボ鉛筆 ボールペンチップ及びボールペン
JP7357461B2 (ja) * 2018-08-23 2023-10-06 三菱鉛筆株式会社 ボールペンリフィル及びボールペン
CN111086341A (zh) * 2018-10-23 2020-05-01 张非洲 一种可加墨书写笔
CN109351887B (zh) * 2018-11-30 2024-03-15 中冶建工集团有限公司 一种转动限位插柱结构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533634U (fr) * 1976-06-22 1978-01-13
JPS63100285U (fr) * 1986-12-22 1988-06-29
JP2001158194A (ja) * 1999-09-20 2001-06-12 Sakura Color Prod Corp ボールペン及びボールペンチップ
JP2002052884A (ja) * 2000-08-14 2002-02-19 Mitsubishi Pencil Co Ltd ボールペンチップ
JP2006289807A (ja) * 2005-04-12 2006-10-26 Pilot Corporation ボールペンチップ及びそれを用いたボールペン
JP2007190693A (ja) * 2006-01-17 2007-08-02 Mitsubishi Pencil Co Ltd ボールペンリフィル
JP2010125841A (ja) * 2008-12-01 2010-06-10 Zebra Pen Corp 筆記具
JP2010126715A (ja) * 2008-12-01 2010-06-10 Zebra Pen Corp 筆記具用インキ組成物及び筆記具

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916225Y2 (ja) * 1980-06-20 1984-05-12 株式会社サクラクレパス 低粘性インク用ボ−ルペンペン先
US6422776B1 (en) * 1999-09-20 2002-07-23 Sakura Color Products Corporation Ball-point pen and a penpoint tip therein
CN100430448C (zh) * 2003-05-27 2008-11-05 樱花彩色产品株式会社 笔具
US7297730B2 (en) * 2003-10-08 2007-11-20 The Pilot Ink Co., Ltd. Ballpoint-pen ink compositions
JP4870444B2 (ja) * 2006-02-20 2012-02-08 株式会社サクラクレパス 塗布具用チップ、並びに、塗布具
CN201124647Y (zh) * 2007-11-27 2008-10-01 毛国栋 中性笔头

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533634U (fr) * 1976-06-22 1978-01-13
JPS63100285U (fr) * 1986-12-22 1988-06-29
JP2001158194A (ja) * 1999-09-20 2001-06-12 Sakura Color Prod Corp ボールペン及びボールペンチップ
JP2002052884A (ja) * 2000-08-14 2002-02-19 Mitsubishi Pencil Co Ltd ボールペンチップ
JP2006289807A (ja) * 2005-04-12 2006-10-26 Pilot Corporation ボールペンチップ及びそれを用いたボールペン
JP2007190693A (ja) * 2006-01-17 2007-08-02 Mitsubishi Pencil Co Ltd ボールペンリフィル
JP2010125841A (ja) * 2008-12-01 2010-06-10 Zebra Pen Corp 筆記具
JP2010126715A (ja) * 2008-12-01 2010-06-10 Zebra Pen Corp 筆記具用インキ組成物及び筆記具

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015042733A (ja) * 2013-06-11 2015-03-05 株式会社サクラクレパス 加圧式ボールペン用水性インキ組成物及び加圧式ボールペン
CN105578777A (zh) * 2014-09-29 2016-05-11 深圳市钛克新材料科技有限公司 一种导电笔
US20230398807A1 (en) * 2020-11-16 2023-12-14 Kabushiki Kaisha Pilot Corporation (Also Trading As Pilot Corporation) Ballpoint pen tip, ballpoint pen refill, and ballpoint pen
US11975560B2 (en) * 2020-11-16 2024-05-07 Kabushiki Kaisha Pilot Corporation Ballpoint pen tip, ballpoint pen refill, and ballpoint pen

Also Published As

Publication number Publication date
JP2012131079A (ja) 2012-07-12
CN103384602A (zh) 2013-11-06
CN103384602B (zh) 2016-06-22
JP5808104B2 (ja) 2015-11-10

Similar Documents

Publication Publication Date Title
JP5808104B2 (ja) ボールペン及びボールペン用ペン先チップ
JP4842295B2 (ja) 筆記具
CN100515798C (zh) 涂布工具用尖头和涂布工具
JP5718628B2 (ja) 塗布具用チップ及び塗布具
JP6351100B2 (ja) ボールペン
JP5121087B2 (ja) ボールペン及びボールペンチップ
JP6494432B2 (ja) ノック式ボールペン
JP4471276B2 (ja) 塗布具用チップ、塗布具用チップの製造方法、塗布具
JP6042100B2 (ja) 筆記具レフィル及びそれを収容した筆記具
JP3923024B2 (ja) 流動体塗布具
JP4267886B2 (ja) 塗布具用チップ、塗布具及び塗布具用チップの製造方法
JP4210476B2 (ja) 水性ボールペン及びボールペンチップ
JP4831590B2 (ja) ボールペン及びボールペンチップ
JP2006297800A (ja) 加圧式の筆記具
JP7469176B2 (ja) 液体吐出具
JP7503456B2 (ja) 筆記具
JP2006326903A (ja) 加圧式の筆記具
JP2006239988A (ja) 加圧式の筆記具
JP5319099B2 (ja) ボールペン
JP2006289875A (ja) 加圧式の筆記具
JP2003170694A (ja) 水性ボールペン
JP2012061867A (ja) ボールペン及びボールペンチップ
JPH10287082A (ja) ボールペンのリフィール
JP2006159629A (ja) 加圧式の筆記具
JP2021187036A (ja) 液体吐出具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11849992

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11849992

Country of ref document: EP

Kind code of ref document: A1