Writing instrument and associated nib assembly

Abstract

A writing implement can include a nib having apertures for viewing a writing surface when in use. The nib includes a fibrous nib body having an upper writing portion and a lower portion configured to deliver ink from an ink reservoir to the upper writing portion. The nib has one or more elongate beams that define an aperture in a two-dimensional plane through which a writing surface can be viewed when in use.

Description

Technical Field

[0001] This disclosure generally relates to writing instruments, and more specifically to writing instruments with fiber nibs. Background Technology

[0002] Writing instruments with fiber nibs (such as markers, drawing pens, and highlighters) are typically used to transfer ink onto a writing surface. When wide lines are needed, choose a writing instrument with a fiber nib that has a sufficiently wide surface so that a wide line is formed with just a single pass of the writing instrument. Unfortunately, when right-handed users draw lines from left to right, the writing instrument and nib obstruct the view of the writing surface. Wide fiber nibs used for drawing wide lines exacerbate this problem by obstructing even more of the writing surface. This problem is particularly severe when highlighting text with a highlighter. To compensate, users often draw multiple short lines instead of one long line, or draw lines while holding the writing instrument at an unnatural angle. Without compensation, lines are frequently misdrawn, either in the wrong place or irregularly shaped.

[0003] Previous attempts to provide writing instruments with relatively wide nibs that offer improved viewing of the writing surface utilized transparent support structures. However, in such instruments, the transparent support structure itself obstructs the view of the writing surface, especially as debris, defects, or discoloration accumulate over time.

[0004] Therefore, writing instruments with fiber nibs that allow for completely unobstructed viewing of the writing surface would be beneficial. Attached Figure Description

[0005] A detailed description is given with reference to the accompanying drawings. The same reference numerals may be used to denote similar or identical items. Various embodiments may utilize elements and / or components other than those shown in the drawings, and some elements and / or components may not be present in various embodiments. Elements and / or components in the figures are not necessarily drawn to scale. Throughout this disclosure, singular and plural terms may be used interchangeably depending on the context.

[0006] Figure 1A This is a side view of the pen tip based on the contents of this disclosure.

[0007] Figure 1B This is a three-dimensional view of the pen tip based on the contents of this disclosure.

[0008] Figure 1C It is a perspective view of a writing instrument writing on a writing surface according to the contents of this disclosure.

[0009] Figure 2 This is a side view of the pen tip based on the contents of this disclosure.

[0010] Figure 3 is a side view of a pen point according to the present disclosure.

[0011] Figure 4 is a schematic view of a pen point according to the present disclosure.

[0012] Figure 5 is a perspective view of a writing instrument according to the present disclosure.

[0013] Figure 6 is a perspective view of a writing instrument according to the present disclosure.

[0014] Figure 7A is a side view of a pen point and ferrule according to the present disclosure.

[0015] Figure 7B is a perspective view of a pen point and ferrule according to the present disclosure.

[0016] Figure 7C is a cross-sectional view of a pen point and ferrule according to the present disclosure.

[0017] Figure 8 is a cross-sectional view of a pen point and ferrule according to the present disclosure.

[0018] Figure 9 is a side view of a writing instrument according to the present disclosure.

[0019] Figure 10 is a side view of a writing instrument according to the present disclosure. DETAILED DESCRIPTION

[0020] Provided herein are writing instruments and associated pen point assemblies. The writing instruments and associated pen point assemblies advantageously improve the visibility of a writing surface during use of the writing instrument. The present disclosure includes non-limiting embodiments of writing instruments and pen points. Embodiments are described in detail herein to enable one of ordinary skill in the art to practice the writing instruments and associated pen point assemblies, but it is understood that other embodiments can be utilized and that logical changes can be made without departing from the scope of the present disclosure. Throughout the disclosure, singular and plural terminology can be used interchangeably depending on the context.

[0021] Throughout this disclosure, various aspects are presented in a range format. It should be understood that the description in range format is merely for convenience and brevity and should not be construed as limiting the scope of the disclosure. Accordingly, the description of a range should be considered to have specifically disclosed all possible subranges as well as individual numerical values within that range. For example, a description of a range such as from 1 to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numbers within that range, for example, 1, 2, 3, 4, 5, and 6. This same applies to ranges recited using terminology such as “between,” “from... to,” “up to,” “down to,” “up to,” “down to,” “upwards from,” “downwards from,” etc. Recitation of a range of values using terminology such as “between,” “from... to,” “up to,” “down to,” “up to,” “down to,” “upwards from,” “downwards from,” etc. should be understood to include the endpoints of the range.

[0022] Fiber tips are tips formed of fiber materials along which ink can travel. For example, the fiber materials can be formed of a plurality of fibers and a resin, a porous elastomer, or other materials. For example, highlighters, dry-erase markers, permanent markers, felt-tip pens, and the like can use fiber tips that generally maintain their shape while allowing ink to travel along the fibers. Because writing instruments such as highlighters are often used to create wide lines, some users have difficulty accurately drawing lines with such writing instruments due to the size of the fiber tip and the opacity of the fiber tip. In the present disclosure, the fiber tip includes an aperture therein through which a user can view the surface on which they are writing during a writing action. Thus, the present tips can provide a way by which a user can accurately draw wide lines due to the ability to view the writing surface.

[0023] Tip assemblies and writing instruments containing such assemblies will be discussed below. The tips are fibrous and include an aperture therein through which a user can view the surface on which they are writing during a writing action. The tips can be produced from a plurality of fibers and a resin that are subjected to stamping to define the aperture through which the writing surface can be viewed in use. By forming the aperture by stamping out material, it has been found that the tips can continue to transfer ink from an ink reservoir to a writing surface while providing unobstructed viewing of the writing surface. In certain aspects, the tips are self-supporting such that the upper writing portion does not require additional support. In other aspects, the writing instruments include a ferrule having a support structure for the tip.

[0024] Tip assemblies

[0025] Disclosed herein are nibs for writing instruments. In one aspect, the nibs can be formed from a self-supporting fiber nib body that includes an upper writing portion and a lower portion in communication with one another. The upper writing portion can be designed to deliver ink to a writing surface. The upper writing portion can define an aperture in a two-dimensional X-Y plane bounded by at least one elongated beam, i.e., there is neither material nor material extending in a third axis in the aperture, such that the aperture is surrounded by material only in the first and second axes. The aperture can allow for viewing of the writing surface therethrough.

[0026] As used herein, the term "self-supporting" refers to a nib that has sufficient structural stability such that it maintains a defined shape in use, is free of any support structure associated with its upper writing portion, and is suitable for the transfer of ink.

[0027] As used herein, an "aperture" refers to the absence of any solid material. The aperture can be filled with air. The shape of the aperture is defined by the fiber nib body that defines the aperture. The aperture can be any shape, such as a square, triangle, rectangle, or other polygon, depending on the application and desired nib size and shape. In some embodiments, the aperture is formed by punching through the nib.

[0028] In some embodiments, the nib is monolithic. As used herein, "monolithic" refers to a single, homogeneous structure that is continuous throughout. In other embodiments, the nib is formed from two or more portions that are operably coupled in fluid communication with one another.

[0029] In some embodiments, the fiber nib body is formed from a plurality of fibers and a resin. In other embodiments, the fiber nib body is formed from a porous elastomer.

[0030] In some embodiments, the lower portion and the upper writing portion are defined by a first notch located on a front side of the fiber nib body and a second notch located on a back side of the fiber nib body. The first notch and the second notch are located on the same axis such that an imaginary line from one notch to the other is perpendicular to a longitudinal axis of the nib and defines an imaginary boundary separating the lower portion and the upper writing portion.

[0031] In some embodiments, the notches can be positioned such that the area of the lower portion and the upper writing portion are substantially equal, i.e., the notches can be positioned at a midpoint of the longitudinal axis of the nib. As used herein, "area" used in reference to comparing the area of portions of the nib body includes the area of the aperture that can be included in the portion. In other embodiments, the notches can be positioned such that the area of the lower portion is greater than the area of the upper writing portion. In other embodiments, the notches can be positioned such that the area of the lower portion is less than the area of the upper writing portion.

[0032] In some embodiments, the first notch and the second notch extend into the fiber nib body about 0.1 mm to about 1.5 mm, such as about 0.2 mm, 0.5 mm, 0.7 mm, 1 mm, 1.2 mm, or about 1.4 mm. The notches can extend 0.15 mm, 0.3 mm, 0.9 mm, 1.3 mm, or any distance in between, depending on the desired nib and writing instrument characteristics. The notches can extend about 1% of the fiber nib body width, about 5% of the fiber nib body width, or about 10% of the fiber nib body into the fiber nib body. The notches can extend about 2%, 7%, 11%, 15%, 20%, or 25% of the fiber nib body or any distance in between into the fiber nib body, depending on the desired nib and writing instrument characteristics.

[0033] In some embodiments, the aperture can be a punched region in the upper writing portion. That is, the aperture can be mechanically punched from the fiber nib material to form the fiber nib body having the aperture.

[0034] In some embodiments, the fiber nib body has a thickness of about 1 mm to about 4 mm, such as about 1.5 mm, 2 mm, 3 mm, or about 3.5 mm. The fiber nib body can have a thickness of about 1.8 mm, 2.3 mm, 2.7 mm, 3.4 mm, 3.9 mm, or any thickness in between, depending on the desired nib and writing instrument characteristics.

[0035] In some embodiments, the fiber nib body can include a writing beam in the upper writing portion above the aperture. In some embodiments, the writing beam has one or more beveled edges to increase the surface area of the writing beam that contacts a writing surface in use.

[0036] In some embodiments, the writing beam is perpendicular to the longitudinal axis of the fiber nib body. In other embodiments, the writing beam is positioned at an angle to the perpendicular defined by the longitudinal axis to alter the effective angle at which a user holds the writing instrument in use. In some embodiments, the angle is greater than 0° to about 45°, such as about 9.5°.

[0037] In some embodiments, the writing beam extends about 1 mm to about 2.5 mm along the longitudinal axis, such as 1.4 mm, 1.8 mm, 2.2 mm, or about 2.4 mm. The writing beam can extend 1.2 mm, 1.5 mm, 1.7 mm, 2.1 mm, or any distance in between, depending on the desired nib and writing instrument characteristics.

[0038] In some embodiments, the fiber nib body has a length of about 15 mm to about 30 mm, for example 18 mm, 20 mm, 25 mm, or about 28 mm. The fiber nib body can have a length of about 16 mm, 21 mm, 27 mm, 29 mm, or any length therebetween, depending on the desired nib and writing instrument characteristics. In some embodiments, the fiber nib body has a width of about 5 mm to about 10 mm, for example 6 mm, 7 mm, 8 mm, 9 mm, or any width therebetween, depending on the desired nib and writing instrument characteristics. In some embodiments, the fiber nib body has an aspect ratio of about 1 : 1, about 1.5: 1, about 2: 1, about 2.5: 1, about 3: 1, about 3.5: 1, about 4: 1, or any ratio therebetween, depending on the desired nib and writing instrument characteristics.

[0039] Figure 1A is a side view of a nib 100 comprising a fiber nib body having an upper writing portion 102 and a lower portion 104 in communication with each other, wherein the upper writing portion 102 is designed to deliver ink to a writing surface 106. A void 108 is defined within the upper writing portion 102 in a two-dimensional X-Y plane, bounded by at least one elongated beam 110. A first notch 112 is located on a rear side 113 of the fiber nib body, and a second notch 114 is located on a front side 115 of the fiber nib body. The first notch 112 and the second notch 114 define an imaginary boundary 116 separating the upper writing portion 102 from the lower portion 104. The void 108 is bounded on a front side 118 by a front elongated beam 120, and on a rear side 122 by a rear elongated beam 124. The void 108 is bounded on a lower side 125 by a lower piece of the upper writing portion 129. A writing beam 126 bounds the void 108 on an upper side 127. The writing beam 126 has one or more beveled surfaces 128.

[0040] Figure 1B is a perspective view of the nib 100 of Figure 1A Figure 1C is a perspective view of a writing instrument having a nib 100 writing on a writing surface 106. In some examples, the void is defined by four sides. In other examples, the void can have three sides, 5 sides, 6 sides, or more, depending on the shape of the nib. The void can have substantially the same polygonal shape as the upper writing portion, i.e., each side of the void is equidistant from the elongated beams and the writing beam of the upper writing portion. The void can have a shape that is different from the upper writing portion, i.e., one or more beams can have a varying width. The void can have rounded corners, or the void can have sharp corners.

[0041] ​The lower portion of the nib body can taper to a generally triangular point, or the lower portion of the nib body can have a generally rectangular shape. In some embodiments, the lower portion of the nib body can begin tapering such that the lowermost 10% of the lower portion, the lowermost 20%, 30%, 40%, 50%, or any proportion in between of the lower portion of the nib body is part of the tapered end. In some embodiments, the width of the lower portion of the nib body is substantially equal to the width of the nib body. In other embodiments, the width of the lower portion is less than the width of the nib body. In some embodiments, the lower portion transfers liquid, such as ink, from a source of liquid located below the lower portion of the nib body to the upper writing portion of the nib body.

[0042] The front elongate beam and the rear elongate beam can begin to curve toward each other at the point where they meet the writing beam, or they can maintain a straight, unchanging profile when they meet the writing beam. The notch can be linear, the notch can have curved edges, or the notch can have rounded corners. One side of the writing beam can be beveled, while the opposite side is not beveled, or both sides can be beveled or not beveled. The elongate beam can be linear such that the cross-section of the beam is rectangular, or the elongate beam can have a chamfer such that the cross-section of the beam is a rounded rectangle.

[0043] In some instances, the aperture can be formed by punching the nib using a punch having a desired aperture size and shape. In other instances, the aperture can be formed by the mold in which the nib is formed, i.e., the nib formed of the fibrous material and resin can be formed in a mold designed to produce a nib having an aperture. Any suitable means can be used to form the aperture.

[0044] Figure 2 is a side view of a nib 100 comprising a fibrous nib body having an upper writing portion 102 and a lower portion 104. A first notch 112 and a second notch 114 are positioned such that the upper writing portion 102 has a greater area than the lower portion 104.

[0045] Figure 3 is a side view of a nib 100 comprising a fibrous nib body having an upper writing portion 102 and a lower portion 104. A first notch 112 and a second notch 114 are positioned such that the lower portion 104 has a greater area than the upper writing portion 102.

[0046] Writing instrument

[0047] Also disclosed herein are writing instruments. In one aspect, a writing instrument can include an elongated body having an ink reservoir and a fiber nib body, such as the self-supporting fiber nib body described above. The fiber nib body can have a lower portion disposed in an end of the elongated body and in fluid communication with ink contained in the ink reservoir and an upper writing portion protruding from the end of the elongated body such that the fiber nib body transfers ink from the ink reservoir to a writing surface. The upper writing portion can define an aperture in a two-dimensional X-Y plane by at least one elongated beam. In another aspect, a writing instrument can include a ferrule at an end of the elongated body for supporting the fiber nib body. In such embodiments, the fiber nib body can include any suitable configuration (e.g., material and structure) that includes any combination of features described herein and can be self-supporting or not self-supporting. Thus, the ferrule can provide structural support for a non-self-supporting nib body or can supplement support provided by a self-supporting nib body.

[0048] In some embodiments, the ferrule has at least one elongated support rib for supporting at least one elongated beam of the nib body. In some embodiments, the ferrule has a front elongated support rib for supporting a front elongated beam of the nib and a rear elongated support rib for supporting a rear elongated beam of the nib.

[0049] In some embodiments, the front and rear elongated support ribs each include a first groove corresponding to the front and rear elongated beams to support the fiber nib body and prevent the fiber nib body from deforming in use. In some embodiments, the front and rear elongated support ribs each include a second groove within the first groove corresponding to a first protrusion on the front elongated beam and a second protrusion on the rear support beam. The second grooves and protrusions further support the fiber nib body and prevent the nib from deforming in use or dislodging from the ferrule.

[0050] In some embodiments, the front and rear elongated support ribs are equal in length. In other embodiments, the front elongated support rib is greater in length than the rear elongated support rib.

[0051] In some embodiments, the writing instrument is a highlighter. In other embodiments, the writing instrument is a permanent marker. In other embodiments, the writing instrument is an erasable marker. In other embodiments, the writing instrument is a sketching pen.

[0052] Figure 5 and Figure 6 is a perspective view of a writing instrument 500 including an elongated body 502 having an ink reservoir 504 therein. A ferrule 508 is disposed at an end 506 of the elongated body 502 and is configured to support a nib 100 by one or more elongated support ribs 510.

[0053] In some examples, the writing instrument can have a circular shape. In other examples, the writing instrument can have other shapes, such as a rectangle, a triangle, or some other polygon. Any suitable shape can be used for the writing instrument. In some examples, the writing instrument has a cross-sectional area that substantially corresponds to the width of a line drawn by the nib, as Figure 5 depicted in FIG. 1. In other examples, the elongated body has a substantially increased cross-sectional area that corresponds to a larger ink reservoir, as Figure 6 depicted in FIG. 2. When the ink reservoir volume is substantially increased, the shape of the ferrule can change where it meets the end of the elongated body to match the cross-sectional area of the elongated body, but the dimensions of the elongated support ribs of the ferrule are still dictated by the dimensions of the nib. In this way, the dimensions and other design considerations affecting the nib are decoupled from the dimensions and other design considerations affecting the elongated body.

[0054] Figure 7A is a side view of a ferrule 508 configured to support a nib 100. The nib 100 has one or more elongated ribs 110 that define an aperture 108, and the ferrule 508 has one or more elongated support ribs 510 designed to support the one or more elongated ribs 110. The front elongated rib 120 is supported by a front elongated support rib 702, and the rear elongated rib 124 is supported by a rear elongated support rib 704. Figure 7B is a perspective view of the ferrule 508 of Figure 7A FIG. 3. The elongated support ribs 702, 704 each include a first groove 706 that corresponds to the elongated ribs 120, 124. Figure 7C is a cross-sectional view of the elongated support ribs 702, 704 having first grooves 706 that correspond to the elongated ribs 120, 124

[0055] In some examples, the ferrule has a circular base where it meets the elongated body. In other examples, the ferrule has a linear base. Any suitable shape of ferrule base can be used. The elongated support ribs of the ferrule can have a curved outer boundary that corresponds to a similarly curved elongated rib of the nib. The elongated support ribs can extend the entire length of the elongated rib, or the elongated support ribs can extend only a portion of the length of the elongated rib in order to allow a greater portion of the elongated rib to be exposed. In some examples, the elongated support ribs terminate in flat surfaces that are perpendicular to the longitudinal axis of the ferrule. In other examples, the elongated support ribs have tapered ends.

[0056] Figure 8is a cross-sectional view of an elongated support rib 702, 704 having a first groove 706 corresponding to an elongated beam 120, 124. The front elongated support rib 702 further includes a second groove 802 corresponding to a first protrusion 804 of the front elongated beam 120, and the rear elongated support rib 704 further includes a second groove 802 corresponding to a second protrusion 806 of the rear elongated beam 124. In some examples, there is a single second groove and a single protrusion on each elongated beam. In other examples, there can be multiple grooves and multiple protrusions on each elongated beam. The protrusion can have a curved shape, or it can be linear. Any suitable shape and size of the protrusion and second groove can be used to support and secure the nib in the ferrule.

[0057] Figure 9 is a side view of a writing instrument 500 having a ferrule 508 disposed at an end 506 of an elongated body. A nib 100 is disposed in the ferrule 508. The front elongated support rib 702 and the rear elongated support rib 704 have the same length. Figure 10 is a side view of a writing instrument 500 in which the length of the front elongated support rib 702 is greater than the length of the rear elongated support rib 704. In some examples, the nib has an angled writing beam, and the length of the elongated support rib corresponds substantially to the angle of the writing beam. The elongated support rib can terminate at an angled surface, where the angle corresponds to the angle of the writing beam. In other examples, the elongated support ribs have equal lengths, regardless of the angle of the writing beam.

[0058] Writing instruments and associated nib assemblies have been provided. These writing instruments include nib assemblies having a fibrous nib body that defines apertures through which a writing surface can be viewed when in use. In some embodiments, the nib is self-supporting, while in other embodiments, the nib is supported by a ferrule having one or more elongated support ribs corresponding to one or more elongated beams of the nib.

[0059] Embodiments

[0060] Figure 4 Exemplary dimensions of the fibrous nibs as described herein are provided.

[0061] While the disclosure has been described with reference to numerous embodiments, those skilled in the art will understand that the disclosure is not limited to the embodiments disclosed. Rather, the disclosure can be modified to incorporate any number of variations, alterations, substitutions, or equivalent arrangements not heretofore described without departing from the spirit and scope of the disclosure. Conditional language such as, among others, "can," "could," "might" or "may," unless specifically stated otherwise, generally are intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements or steps. Additionally, while the above description has been made with reference to various embodiments, it will be understood that aspects of the disclosure can include only some of the described embodiments. Accordingly, the disclosure should not be viewed as being limited to the described embodiments, but rather should be understood to include all variations, equivalents, and alternatives falling within the spirit and scope of the appended claims.

Claims

1. A pen tip for a writing instrument, the pen tip comprising: A self-supporting fiber nib body includes an upper writing portion and a lower portion communicating with the upper writing portion. The upper writing portion of the fiber nib body is configured to deliver ink to a writing surface and define pores in a two-dimensional plane defined by at least one elongated beam. The pore allows the writing surface to be viewed through it. The first notch is located on the rear side of the fiber pen tip body, and the second notch is located on the front side of the fiber pen tip body. The first notch and the second notch define the boundary between the lower portion and the upper writing portion of the fiber nib body, and extend over the entire thickness of the self-supporting fiber nib body perpendicular to the two-dimensional plane. The self-supporting fiber nib body is arranged to maintain a defined shape in use without requiring any support structure associated with the upper writing portion, and the pores contain no solid material.

2. The pen tip as described in claim 1, wherein, The nib is a single piece.

3. The pen tip as described in claim 1, wherein, The fiber pen tip body comprises multiple fibers and resin.

4. The pen tip as described in claim 1, wherein, The first notch and the second notch extend 0.1 mm to 1.5 mm into the fiber nib body.

5. The pen tip according to any one of claims 1 to 4, wherein, The lower part of the fiber optic pen tip body and the upper writing part of the fiber optic pen tip body have substantially the same area.

6. The pen tip according to any one of claims 1 to 4, wherein, The lower portion of the fiber optic pen tip body has a larger area than the upper writing portion of the fiber optic pen tip body.

7. The pen tip according to any one of claims 1 to 4, wherein, The lower portion of the fiber optic pen tip body has a smaller area than the upper writing portion of the fiber optic pen tip body.

8. The pen tip according to any one of claims 1 to 4, wherein, The pore is a perforated area in the upper writing section of the fiber nib body.

9. The pen tip according to any one of claims 1 to 4, wherein, The fiber nib body has a thickness of 1mm to 4mm.

10. The pen tip according to any one of claims 1 to 4, wherein, The pen tip has at least one elongated beam, which includes a front elongated beam and a rear elongated beam.

11. The pen tip as claimed in claim 10, wherein, The opening is bordered on the front side by a front elongated beam with a thickness of 0.5 mm to 1.5 mm, on the rear side by a rear elongated beam with a thickness of 0.5 mm to 1.5 mm, and on the lower side by the lower part of the upper writing portion of the fiber nib body.

12. The pen tip according to any one of claims 1 to 4, wherein, The upper writing portion of the fiber optic pen tip has a writing beam located above the aperture.

13. The pen tip as described in claim 12, wherein, The writing beam has one or more beveled edges.

14. The pen tip according to claim 12, wherein, The writing beam is perpendicular to the at least one elongated beam.

15. The pen tip according to claim 12, wherein, The writing beam is positioned at an angle to the perpendicular line defined by the at least one elongated beam.

16. The pen tip as claimed in claim 15, wherein, This angle is greater than 0° and extends up to 45°.

17. The pen tip according to claim 15, wherein, The angle is 9.5°.

18. The pen tip according to claim 12, wherein, The writing beam extends 1mm to 2.5mm along the longitudinal axis.

19. The pen tip according to any one of claims 1 to 4, wherein, The fiber nib body has a length of 15mm to 30mm and a width of 5mm to 10mm.

20. A writing instrument, comprising: An elongated body, the elongated body including an ink reservoir; as well as The pen tip according to any one of claims 1 to 19 is disposed at the end of the elongated body. The lower portion of the fiber nib body is disposed inside the end of the elongated body and is configured to deliver ink from the ink reservoir to the upper writing portion of the fiber nib body, the upper writing portion of the fiber nib body protruding beyond the end of the elongated body.

21. A writing instrument, comprising: An elongated body, the elongated body including an ink reservoir; A collar, which is provided at the end of the elongated body; as well as A pen tip comprising a self-supporting fiber nib body including an upper writing portion and a lower portion communicating with the upper writing portion. The upper writing portion of the fiber nib body is configured to deliver ink to a writing surface and defines an aperture in a two-dimensional plane defined by at least one elongated beam, wherein the aperture allows the writing surface to be viewed through the aperture. The first notch is located on the rear side of the fiber pen tip body, and the second notch is located on the front side of the fiber pen tip body. The first notch and the second notch define the boundary between the lower portion and the upper writing portion of the fiber nib body, and extend over the entire thickness of the self-supporting fiber nib body perpendicular to the two-dimensional plane. The self-supporting fiber nib body is arranged to maintain its defined shape during use without requiring any support structure associated with the upper writing portion, and the pores contain no solid material. The lower portion of the fiber optic pen tip body is located inside the end of the elongated body and is configured to deliver ink from the ink reservoir to the upper writing portion of the fiber optic pen tip body. The upper writing portion of the fiber optic pen tip protrudes beyond the end of the elongated body, and The collar includes at least one elongated support rib for supporting at least one elongated beam of the pen tip.

22. The writing instrument as claimed in claim 21, wherein, The at least one elongated beam includes a rear elongated beam and a front elongated beam.

23. The writing instrument as described in claim 22, wherein, The ring has at least one elongated support rib, including a front elongated support rib and a rear elongated support rib.

24. The writing instrument as claimed in claim 23, wherein, The front elongated support rib of the collar supports the front elongated beam of the fiber pen tip body, and the rear elongated support rib of the collar supports the rear elongated beam of the fiber pen tip body.

25. The writing instrument as described in claim 24, wherein, The front elongated support rib and the rear elongated support rib of the collar each include a first groove, which corresponds to the front elongated beam and the rear elongated beam of the fiber pen tip body. The first groove supports the fiber pen tip body and prevents the fiber pen tip body from deforming during use.

26. The writing instrument as claimed in claim 25, wherein, The front elongated support rib and the rear elongated support rib of the collar each further include a second groove, which is located within the first groove and corresponds to the first protrusion on the front elongated beam of the fiber pen tip body and the second protrusion on the rear elongated beam of the fiber pen tip body. The second groove secures the fiber pen tip body and prevents it from detaching from the collar.

27. The writing instrument according to any one of claims 23 to 26, wherein, The lengths of the front elongated support rib and the rear elongated support rib of the ring are substantially equal.

28. The writing instrument according to any one of claims 23 to 26, wherein, The length of the front elongated support rib of the collar is greater than the length of the rear elongated support rib of the collar.

29. The writing instrument according to any one of claims 23 to 26, wherein, The fiber nib body is a single piece.

30. The writing instrument according to any one of claims 23 to 26, wherein, The fiber pen tip body comprises multiple fibers and resin.

31. The writing instrument according to any one of claims 23 to 26, wherein, The first notch is located on the front side of the fiber pen tip body, and the second notch is located on the rear side of the fiber pen tip body. The first notch and the second notch define the boundary between the lower portion of the fiber nib body and the upper writing portion of the fiber nib body.

32. The writing instrument according to any one of claims 23 to 26, wherein, The pore is a perforated area in the upper writing section of the fiber nib body.

33. The writing instrument according to any one of claims 23 to 26, wherein, The fiber nib body has a thickness of 1mm to 4mm.

34. The writing instrument according to any one of claims 23 to 26, wherein, The opening is bordered on the front side by the front elongated beam of the fiber pen tip body with a thickness of 0.5mm to 1.5mm, on the rear side by the rear elongated beam of the fiber pen tip body with a thickness of 0.5mm to 1.5mm, on the upper side by the upper writing portion of the fiber pen tip body, and on the lower side by the lower part of the upper writing portion of the fiber pen tip body.

35. The writing instrument according to any one of claims 23 to 26, wherein, The writing instrument is a highlighter, permanent marker, or dry eraser.

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