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Writing instrument

一种书写用具、书写部的技术,应用在书写器具、书写连接器、笔尖等方向,能够解决不易获得、墨引导管复杂、不能确保可识别性等问题,达到耐久性优异、可识别性优异的效果

Active Publication Date: 2013-03-13
MITSUBISHI PENCIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in Figure 28 (a) and Figure 28 In the writing implement 4 shown in (b), the ink guide tube 4g is thickened (enlarged) in order to reliably detect the depletion signal, and thus involves some problems in that sufficiently high recognizability cannot be ensured.
In addition, the current situation is that due to the complicated shape of the ink guide tube 4g, it is not easy to ensure the sealing performance of the pen tip and to obtain a structure that exhausts the ink to the end
[0009] In addition, in Figure 29 (a) and Figure 29 In the writing instrument 5 shown in (b), if the thickness of the ink guide portion is reduced to such an extent that sufficiently high visibility can be ensured, the flow of ink cannot be ensured.
On the other hand, if the ink flow rate is intended to be ensured, sufficiently high recognizability cannot be ensured, so the effective recognition portion is limited so that it is difficult to ensure recognizability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0158] Next, the present invention will be described in further detail with reference to examples, but the present invention should not be limited to the examples shown below.

[0159] Next, the present invention will be described in further detail with reference to Examples and Comparative Examples, but the present invention should not be limited to the Examples shown below.

[0160] Test Example 1: Examples 1 to 4 and Comparative Examples 1 to 6.

[0161] Writing utensils and inks equipped with pen nibs having the following compositions were used. Table 1 below and Figure 23 The respective dimensions shown in are used for the dimensions of the porous member as the writing portion, the holding member, and the ink guide portion constituting each nib. Common components are used for the components of the writing utensil except for the nib and ink.

[0162] Composition of the nib:

[0163] Porous member of writing part: sintered core made of PE, porosity: 60%

[0164] Holdi...

Embodiment 5 to 7 and comparative example 7 to 8

[0202] In Test Example 2, the writing part porous member and the holding member were bonded by changing the bonding surface shape, bonding surface size, and bonding surface shortest length to evaluate bonding strength and sealing performance by the following evaluation methods. The evaluation results thereof are shown in Table 2 below.

[0203] A writing implement equipped with the nib used in Example 1 above and prepared by the following method was used. The writing portion porous member was attached to the holding member by the following method.

[0204] The relay porous member and the writing portion porous member are bonded by impregnating them with an organic solvent in a state where they are temporarily inserted into the holding member and then drying them.

[0205] Then the evaluation method of strength:

[0206] The bonded writing portion porous member was peeled off with a hand covered with a rubber glove and evaluated according to the following evaluation criteria....

Embodiment 8 to 10 and comparative example 9 to 10

[0221] In Test Example 3, the adhesive strength and sealing performance depending on the thickness of the resin layer of the holding member were evaluated by the above-mentioned evaluation method. The evaluation results thereof are shown in Table 3 below.

[0222] A writing implement equipped with the nib used in the above-mentioned Example 1 and prepared by the same method as in the above-mentioned Test Example 2 except that only the thickness of the resin layer of the holding member was changed was used.

[0223] table 3

[0224]

[0225] As already clear from the results of the above Table 3, compared with the writing implements in Comparative Examples 9 to 10 outside the scope of the present invention, in Examples 8 to 10 falling within the scope of the present invention, the writing implements in the following Excellent in both strength and sealing performance. When the thickness of the holding member resin layer is less than 1 μm, the holding member resin layer cann...

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PUM

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Abstract

Disclosed is a writing instrument which enables visual identification of a wide range of writing directions through a visual identification section of a pen nib and ensures consistent writing to the last touch of writing. To this end, the pen nib (40) includes a porous structure (45) serving as a writing section, and a holding structure (55) which holds the porous structure (45) and has at least one ink guide section (50) for supplying ink to the writing section. The writing instrument has a relay porous structure (30) for supplying the ink contained in a writing instrument body (10) to the ink guide section (50) provided in the holding structure (55), and allows the holding structure (55) to serve as the visual identification section for visually identifying the direction of writing. The area ratio of the visual identification section to the pen nib (40) that is protruded from the end of the writing instrument body is adapted to be 40% or greater.

Description

technical field [0001] The present invention relates to a writing implement called a marker marker type in which ink in a writing implement main body is supplied to a writing portion of a nib, and more particularly to a writing implement capable of visually recognizing a writing direction in a wide range at a recognition portion of a nib and A writing utensil that can write reliably to the end of writing. Background technique [0002] Conventionally, writing instruments having various structures are known as writing instruments capable of visually recognizing a writing direction at a recognition portion of a nib (see, for example, Patent Documents 1 to 5 filed by the present applicant). In each of the above patent documents, known as techniques close to the present invention are, for example, Figure 25 The writing instrument 1 shown (see, for example, Patent Document 1 filed by the present applicant) includes a pen body 1b that guides ink supplied from a writing instrument ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K1/12B43K8/02
CPCB43K8/03B43K8/04B43K1/006B43K8/02B43K23/12B43K8/003
Inventor 神谷俊史奥山广幸川端慎大高力规
Owner MITSUBISHI PENCIL CO LTD
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