EP2431192B1 - Writing pen with ink storage - Google Patents

Writing pen with ink storage Download PDF

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Publication number
EP2431192B1
EP2431192B1 EP10176794.5A EP10176794A EP2431192B1 EP 2431192 B1 EP2431192 B1 EP 2431192B1 EP 10176794 A EP10176794 A EP 10176794A EP 2431192 B1 EP2431192 B1 EP 2431192B1
Authority
EP
European Patent Office
Prior art keywords
core
ink
breathable
writing
pen
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.)
Active
Application number
EP10176794.5A
Other languages
German (de)
French (fr)
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EP2431192A1 (en
Inventor
Ve Chung Hui
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.)
Tung Yik International Ltd
Original Assignee
Tung Yik International Ltd
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 Tung Yik International Ltd filed Critical Tung Yik International Ltd
Priority to EP10176794.5A priority Critical patent/EP2431192B1/en
Publication of EP2431192A1 publication Critical patent/EP2431192A1/en
Application granted granted Critical
Publication of EP2431192B1 publication Critical patent/EP2431192B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/04—Arrangements for feeding ink to writing-points
    • B43K8/06—Wick feed from within reservoir to writing-points
    • B43K8/08—Wick separate from writing-points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/03—Ink reservoirs; Ink cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
    • B43L19/0018—Erasers, rubbers, or erasing devices; Holders therefor with fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
    • B43L19/0056—Holders for erasers
    • B43L19/0068—Hand-held holders

Definitions

  • the present invention relates generally to writing instruments and more specifically, to a writing pen with ink storage, which has simple structure, provides fluent writing and no ink leakage.
  • a writing pen comprises at least an ink storage device and an ink inducing device, wherein the ink storage device is used for storing liquid ink or even gelatin ink as an ink source, and the ink inducing device for inducing ink to the nib for the purpose of writing.
  • the ink storage device is used for storing liquid ink or even gelatin ink as an ink source
  • the ink inducing device for inducing ink to the nib for the purpose of writing.
  • ambient air needs to be allowed into the ink storage device, otherwise vacuum pressure may be generated in the ink storage device and affect outflow of ink. That means, there should be an air communicating passage between the ink storage device and the ambient air to balance air pressure, which is a key point to ensure that the writing pen can provide fluent writing with no ink leakage.
  • China patent No. 01235948.3 discloses a writing pen with ink storage, which has a dust-proof plate, a labyrinth breathable plug, a nano-permeable plate and an one-way valve to achieve air communication between the ink storage device and ambient air.
  • Such a writing pen can keep air pressure balance, but has some disadvantages such as complicated structure with many parts, too much assembly procedures and high manufacture cost.
  • Germany utility model 9205942 U1 discloses an applicator of an automatic delivery type with an ink reservoir forming the pre-characterizing portion of the independent claim 1.
  • the present invention is intended to provide a writing pen with ink storage that has simple structure.
  • a writing pen with ink storage comprising a writing nib, an ink storage compartment for storing ink, an ink inducing device for inducing ink into the writing nib, wherein the writing pen further comprises an air pressure balancing plug which is plugged in an open end of the ink storage compartment to seal ink, and a breathable core having nanopores, the breathable core being inserted into the air pressure balancing plug with one end extending into ink and the other end communicating with ambient air.
  • the ink inducing device comprises a transfer core having one end being connected to the writing nib and a relay core connected to the other end of the transfer core, a tail end of said relay core passing through the air pressure balancing plug and entering into the ink. Further, the opposite ends of the relay core and the writing nib are located in the transfer core with an interval between each other.
  • the writing pen further comprises a pen body and a pen cap, the ink storage compartment and the ink inducing device are arranged at the tail end and the middle of the pen body respectively, while the writing nib is arranged at the front end of the pen body with a portion extending out of the front holder, and the pen cap is assembled at the front end of the front holder to cover the writing nib.
  • the writing pen comprises two breathable cores, including a first breathable core and a second breathable core, and the first breathable core extends into the transfer core.
  • the air pressure balancing plug has three holes for the relay core, the first breathable core and the second breathable core to be inserted into respectively.
  • the first breathable core contacts with the transfer core.
  • diameter of the nanopores in the breathable core is larger than particle diameter of the ink.
  • the diameter of the nanopores in the breathable core is 500nm, and porosity of the breathable core is 50%.
  • Advantages of the writing pen with ink storage in accordance with embodiments of the present invention lie in that: ambient air can be allowed into the ink storage compartment through the breathable cores having nanopores, while ink won't leak out of the ink storage compartment, therefore, air pressure in and out of the ink storage compartment can be kept balance, so the pen can provide fluent writing.
  • the writing pen with ink storage of the present invention utilizes breathable cores to replace the conventional air balancing assembly composed of many parts, thereby it has simple structure, low manufacture cost, and stable and reliable performance.
  • the writing pen with ink storage in accordance with an embodiment of the present invention comprises a fiber writing nib 9, a pen body 2, a front holder 8, a back holder 1, a pen cap 10, an ink storage compartment 11, an ink inducing device 12, an air pressure balancing plug 3 and breathable cores.
  • the ink inducing device comprises a transfer core 7 and a relay core 6 which is made of fiber materials.
  • the breathable cores have cylindrical shape, and there are two breathable cores comprising a first breathable core 5 and a second breathable core 4, while the former is in communication with transfer core 7.
  • the front holder 8 and the back holder 1 are assembled at two ends of the pen body 2 respectively.
  • the ink storage compartment 11 ink storage compartment 11
  • the ink inducing device 12 and the writing nib 9 successively, while the ink storage compartment 11 is arranged in the tail end of the pen body 2 and the ink inducing device is arranged in the middle of the pen body 2.
  • the writing nib 9 is arranged at the front end of the pen body 2 with a portion extending out of the front holder 8.
  • the pen cap 10 is assembled at the front end of the pen body 2 and covers the writing nib 9.
  • the ink inducing device 12 connects the ink storage compartment 11 and the writing nib 9 to induce ink from the ink storage compartment 11 to the writing nib 9.
  • Ink in the ink storage compartment 11 may be fluorescent ink, marking ink, whiteboard ink, blackboard ink, correction fluid or any type of marking fluid.
  • the ink storage compartment 11 comprises a closed end and an open end opposite to each other.
  • the closed end of the ink storage compartment 11 is funnel shaped, and at the open end of the ink storage compartment 11 is a air pressure balancing plug 3, which is tightly fitted to the open end.
  • the air pressure balancing plug 3 has a through hole of 4mm in diameter and two through holes of 2mm in diameter.
  • the relay core 6 passes through the 4mm through hole and enters into the funnel shaped structure at the closed end of the ink storage pipe 11.
  • the first breathable core 5 and the second breathable core 4 are inserted into the 2mm through holes respectively, to enable their left end inserted into the storage compartment 11 and their right end to ambient air. Further, the first breathable core 5 is connected to the transfer core 7 to enhance the performance of inducing ink.
  • the breathable cores in the writing pen of embodiments of the present invention are made of fiber materials treated by nanopore technology, thus the breathable cores are full of nanopores.
  • the nanopores means that the nanopore has a diameter less than 1000 nanometers and measured as nm to be the measuring unit.
  • diameter of the nanopores is in a range of 400 to 800nm, preferably 500nm.
  • particle diameter of ink is 300 to 350 nm, which is smaller than that of the nanopores, so that air passages are formed in the breathable cores.
  • the breathable cores have adequate capability of water absorption to prevent ink leakage.
  • Porosity of the breathable core i.e., a percentage rate of the total volume of all the nanopores to the volume of the breathable core, is in a range of 50 to 60%, and a preferred percentage is 55%, which can ensure fluent air flow.
  • the breathable cores and the relay core 6 are tightly mated with the through holes on the air pressure balancing plug 3 to prevent ink leakage.
  • the transfer core 7 is made of cotton batting, and is covered by a layer of plastic film surrounding its outer surface. Cotton batting has good performance of water absorption to prevent liquid leakage.
  • the relay core 6 and the writing nib 9 are inserted into and connected with two ends of the transfer core 7 respectively, and the relay core 6 is spaced from the transfer core 7 with an interval, rather than directly contacts the transfer core 7. Such a design facilitates ink in the relay core 6 to first flow into the transfer core 7, then flow into the writing nib 9, in such a way ink flow in the pen tip 9 can be kept constant, and thus color of the handwriting is more uniform.
  • the writing pen with ink storage realizes air pressure balance between the ink storage compartment 11 and ambient air by means of the two breathable cores and the air pressure balancing plug 3.
  • the structure of the writing pen is simple, and manufacture process of the breathable cores is already mature, thus the cost is reduced greatly.
  • number of the breathable cores is not limited to two as shown in the above described embodiment, there may be one or three or more breathable cores.
  • shape of the breathable cores is not limited to be cylindrical, but can be square or other shape.
  • the writing nib can be formed in various manners, such as a metal nib with a ball or others, etc.

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  • Pens And Brushes (AREA)

Description

    FIELD OF THE INVENTION
  • The present invention relates generally to writing instruments and more specifically, to a writing pen with ink storage, which has simple structure, provides fluent writing and no ink leakage.
    • BACKGROUND OF THE INVENTION
  • Generally, a writing pen comprises at least an ink storage device and an ink inducing device, wherein the ink storage device is used for storing liquid ink or even gelatin ink as an ink source, and the ink inducing device for inducing ink to the nib for the purpose of writing. As consumption of ink during writing, ambient air needs to be allowed into the ink storage device, otherwise vacuum pressure may be generated in the ink storage device and affect outflow of ink. That means, there should be an air communicating passage between the ink storage device and the ambient air to balance air pressure, which is a key point to ensure that the writing pen can provide fluent writing with no ink leakage.
  • China patent No. 01235948.3 discloses a writing pen with ink storage, which has a dust-proof plate, a labyrinth breathable plug, a nano-permeable plate and an one-way valve to achieve air communication between the ink storage device and ambient air. Such a writing pen can keep air pressure balance, but has some disadvantages such as complicated structure with many parts, too much assembly procedures and high manufacture cost.
  • Germany utility model 9205942 U1 discloses an applicator of an automatic delivery type with an ink reservoir forming the pre-characterizing portion of the independent claim 1.
    • SUMMARY OF THE INVENTION
  • Aimed at disadvantages of complicated structure of the conventional writing pen with ink storage, the present invention is intended to provide a writing pen with ink storage that has simple structure.
  • According to an aspect of the present invention, a writing pen with ink storage is provided, comprising a writing nib, an ink storage compartment for storing ink, an ink inducing device for inducing ink into the writing nib, wherein the writing pen further comprises an air pressure balancing plug which is plugged in an open end of the ink storage compartment to seal ink, and a breathable core having nanopores, the breathable core being inserted into the air pressure balancing plug with one end extending into ink and the other end communicating with ambient air.
  • In an embodiment of the present invention, the ink inducing device comprises a transfer core having one end being connected to the writing nib and a relay core connected to the other end of the transfer core, a tail end of said relay core passing through the air pressure balancing plug and entering into the ink. Further, the opposite ends of the relay core and the writing nib are located in the transfer core with an interval between each other.
  • In an embodiment of the present invention, the writing pen further comprises a pen body and a pen cap, the ink storage compartment and the ink inducing device are arranged at the tail end and the middle of the pen body respectively, while the writing nib is arranged at the front end of the pen body with a portion extending out of the front holder, and the pen cap is assembled at the front end of the front holder to cover the writing nib.
  • In an embodiment of the present invention, the writing pen comprises two breathable cores, including a first breathable core and a second breathable core, and the first breathable core extends into the transfer core. The air pressure balancing plug has three holes for the relay core, the first breathable core and the second breathable core to be inserted into respectively. The first breathable core contacts with the transfer core.
  • In an embodiment of the present invention, diameter of the nanopores in the breathable core is larger than particle diameter of the ink. The diameter of the nanopores in the breathable core is 500nm, and porosity of the breathable core is 50%.
  • Advantages of the writing pen with ink storage in accordance with embodiments of the present invention lie in that: ambient air can be allowed into the ink storage compartment through the breathable cores having nanopores, while ink won't leak out of the ink storage compartment, therefore, air pressure in and out of the ink storage compartment can be kept balance, so the pen can provide fluent writing. The writing pen with ink storage of the present invention utilizes breathable cores to replace the conventional air balancing assembly composed of many parts, thereby it has simple structure, low manufacture cost, and stable and reliable performance.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accompanying drawings illustrate one or more embodiments of the invention and, together with the written description, serve to explain the principles of the invention, and wherein:
    • Fig.1 is a structural diagram showing a writing pen with ink storage in accordance with an embodiment of the present invention.
    • Fig.2 is an exploded view showing parts of the writing pen as shown in Fig. 1.
    • Fig.3 is a structural diagram showing a pressure balancing plug in the writing pen as shown in Fig. 1.
    DETAILED DESCRIPTION OF THE INVENTION
  • These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings. It should be understood that the embodiments described here are only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed.
  • As shown in Fig. 1 and Fig. 2, the writing pen with ink storage in accordance with an embodiment of the present invention comprises a fiber writing nib 9, a pen body 2, a front holder 8, a back holder 1, a pen cap 10, an ink storage compartment 11, an ink inducing device 12, an air pressure balancing plug 3 and breathable cores. The ink inducing device comprises a transfer core 7 and a relay core 6 which is made of fiber materials. The breathable cores have cylindrical shape, and there are two breathable cores comprising a first breathable core 5 and a second breathable core 4, while the former is in communication with transfer core 7.
  • As shown in Fig. 1, the front holder 8 and the back holder 1 are assembled at two ends of the pen body 2 respectively. And in the pen body 2 are the ink storage compartment 11, the ink inducing device 12 and the writing nib 9 successively, while the ink storage compartment 11 is arranged in the tail end of the pen body 2 and the ink inducing device is arranged in the middle of the pen body 2. The writing nib 9 is arranged at the front end of the pen body 2 with a portion extending out of the front holder 8. The pen cap 10 is assembled at the front end of the pen body 2 and covers the writing nib 9. The ink inducing device 12 connects the ink storage compartment 11 and the writing nib 9 to induce ink from the ink storage compartment 11 to the writing nib 9. Ink in the ink storage compartment 11 may be fluorescent ink, marking ink, whiteboard ink, blackboard ink, correction fluid or any type of marking fluid.
  • The ink storage compartment 11 comprises a closed end and an open end opposite to each other. The closed end of the ink storage compartment 11 is funnel shaped, and at the open end of the ink storage compartment 11 is a air pressure balancing plug 3, which is tightly fitted to the open end. As shown in Fig. 3, the air pressure balancing plug 3 has a through hole of 4mm in diameter and two through holes of 2mm in diameter. The relay core 6 passes through the 4mm through hole and enters into the funnel shaped structure at the closed end of the ink storage pipe 11. The first breathable core 5 and the second breathable core 4 are inserted into the 2mm through holes respectively, to enable their left end inserted into the storage compartment 11 and their right end to ambient air. Further, the first breathable core 5 is connected to the transfer core 7 to enhance the performance of inducing ink.
  • The breathable cores in the writing pen of embodiments of the present invention are made of fiber materials treated by nanopore technology, thus the breathable cores are full of nanopores. Here the nanopores means that the nanopore has a diameter less than 1000 nanometers and measured as nm to be the measuring unit. In various embodiments of the present invention, diameter of the nanopores is in a range of 400 to 800nm, preferably 500nm. Usually, particle diameter of ink is 300 to 350 nm, which is smaller than that of the nanopores, so that air passages are formed in the breathable cores. Besides, due to the selected proper pore diameter, the breathable cores have adequate capability of water absorption to prevent ink leakage. Porosity of the breathable core, i.e., a percentage rate of the total volume of all the nanopores to the volume of the breathable core, is in a range of 50 to 60%, and a preferred percentage is 55%, which can ensure fluent air flow.
  • The breathable cores and the relay core 6 are tightly mated with the through holes on the air pressure balancing plug 3 to prevent ink leakage. On the end surface of the air pressure balancing plug 3, three baffles 13 are arranged for fixing the distance from the transfer core 7.
  • The transfer core 7 is made of cotton batting, and is covered by a layer of plastic film surrounding its outer surface. Cotton batting has good performance of water absorption to prevent liquid leakage. The relay core 6 and the writing nib 9 are inserted into and connected with two ends of the transfer core 7 respectively, and the relay core 6 is spaced from the transfer core 7 with an interval, rather than directly contacts the transfer core 7. Such a design facilitates ink in the relay core 6 to first flow into the transfer core 7, then flow into the writing nib 9, in such a way ink flow in the pen tip 9 can be kept constant, and thus color of the handwriting is more uniform.
  • When writing with the writing pen with ink storage, liquid level in the ink storage compartment 11 drops, and negative pressure in the pipe increases, then ambient air enters into the ink storage compartment 11 through the breathable cores to achieve air pressure balance.
  • In various embodiments of the present invention, the writing pen with ink storage realizes air pressure balance between the ink storage compartment 11 and ambient air by means of the two breathable cores and the air pressure balancing plug 3. The structure of the writing pen is simple, and manufacture process of the breathable cores is already mature, thus the cost is reduced greatly.
  • In various embodiments of the present invention, number of the breathable cores is not limited to two as shown in the above described embodiment, there may be one or three or more breathable cores. Also, shape of the breathable cores is not limited to be cylindrical, but can be square or other shape. Additionally, the writing nib can be formed in various manners, such as a metal nib with a ball or others, etc.

Claims (2)

  1. A writing pen with ink storage, comprising a writing nib (9), an ink storage compartment (11) for storing ink, an ink inducing device (12) for inducing ink into the writing nib (9), the writing pen further comprises an air pressure balancing plug (3) which is plugged in an open end of the ink storage compartment (11) to seal ink, and a breathable core having nanopores, the breathable core being inserted into the air pressure balancing plug (3) with one end extending into ink and the other end communicating with ambient air, and the ink inducing device (12) comprises a transfer core (7) having one end being connected to the writing nib (9), characterized in that the ink inducing device (12) further comprises a relay core (6) connected to the other end of the transfer core (7), a tail end of said relay core (6) passing through the air pressure balancing plug (3) and entering into the ink, the opposite ends of the relay core (6) and the writing nib (9) are located in the transfer core (7) with an interval between each other,
    the writing pen comprises two breathable cores, including a first breathable core and a second breathable core, and the first breathable core (5) extends into the transfer core (7), the air pressure balancing plug (3) has three holes for the relay core (6), the first breathable core (5) and the second breathable core (4) to be inserted into respectively,
    the first breathable core (5) contacts with the transfer core (7),
    the diameter of the nanopores in the breathable core is larger than the particle diameter of the ink,
    the diameter of the nanopores in the breathable core is 500nm, and porosity of the breathable core is 50%.
  2. The writing pen with ink storage according to claim 1, wherein the writing pen further comprises a pen body (2) and a pen cap (10), the ink storage compartment (11) and the ink inducing device (12) are arranged at the tail end and the middle of the pen body (2) respectively, while the writing nib (9) is arranged at the front end of the pen body (2) with a portion extending out of the front holder (8), and the pen cap (8) is assembled at the front end of the front holder (8) to cover the writing nib (9).
EP10176794.5A 2010-09-15 2010-09-15 Writing pen with ink storage Active EP2431192B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10176794.5A EP2431192B1 (en) 2010-09-15 2010-09-15 Writing pen with ink storage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10176794.5A EP2431192B1 (en) 2010-09-15 2010-09-15 Writing pen with ink storage

Publications (2)

Publication Number Publication Date
EP2431192A1 EP2431192A1 (en) 2012-03-21
EP2431192B1 true EP2431192B1 (en) 2015-05-27

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105730063B (en) * 2014-12-12 2018-08-21 宁波五云笔业有限公司 The writing implement of the resistance to temperature difference and pressure difference
CN205292011U (en) * 2015-07-02 2016-06-08 东益企业国际有限公司 Stock solution formula lettering pen with straight liquid structure of micropore
CN112192971A (en) * 2020-10-23 2021-01-08 钱惠昌 Automatic ink supply writing brush capable of adjusting ink output amount
EP4011638A1 (en) * 2020-12-11 2022-06-15 Société BIC A writing instrument comprising a switchable flow material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0819Y2 (en) * 1990-10-03 1996-01-10 三菱鉛筆株式会社 Liquid hair cosmetic applicator
DE9205942U1 (en) * 1991-05-14 1992-09-10 Dataprint Datendrucksysteme R. Kaufmann KG, 2000 Hamburg Writing instrument with writing fluid freely held in a container
US5551789A (en) * 1993-10-13 1996-09-03 Kawakami Giken Co Ltd Cosmetic material container
US5906446A (en) * 1996-10-22 1999-05-25 Bic Corporation Fillerless writing instrument
KR100946428B1 (en) * 2006-03-09 2010-03-10 파일롯트 잉크 가부시키가이샤 Writing tools of direct liquid type

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