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1. 发明申请

WO1987002312A1 PEN POINT STRUCTURE 审中-公开
标题翻译：笔尖结构
公开(公告)号：WO1987002312A1
公开(公告)日：1987-04-23
申请号：PCT/JP1985000577
申请日：1985-10-17
申请人： TEIBOW CO., LTD. , AOKI, Yasuhiro , SHIMOISHI, Tetsuo , OTSUKA, Katsumi
发明人： TEIBOW CO., LTD.
IPC分类号： B43K01/08
CPC分类号： B43K7/10 , B43K1/08
摘要： A pen point structure made of a combination of a ball retainer tube and a ball receiving-core of metallic materials, such as stainless steel or other kinds of steel, and a ball of ceramic materials or metallic materials, such as stainless steel or other kinds of steel, and used as a pen point, which requires to have a high productivity, excellent writing properties and, especially, excellent ink extraction performance, for ball-point pens used for various purposes. This pen point is constructed as follows. A ball-receiving core (2) is caulked in a ball retainer tube (1) with an axially-extending through space (a) left therebetween. An ink passage (b) is formed so as to extend along a flat end surface portion (2a), which constitutes a bottom surface of a ball retaining portion (4) in an end section of the interior of the ball retainer tube (1), of the ball-receiving core (2) in such a manner that the ink passage (b) is communicated with the end of the through space (a). The ink passage (b) in the pen point structure is formed so that it extends so as to be independent of or communicated with or surround a central portion of a ball-receiving surface (6). The ball-receiving core (2) is formed so that the outer diameter thereof is larger than the diameter of a ball (3). The inner diameter of the ball retainer tube (1) is set substantially equal to the diameter of the ball (3). The inner surface of the ball retainer tube (1) and the outer surface of the ball-receiving core (2) have similar cross-sectional shapes, i.e. circular or square cross-sectional shapes, or different cross-sectional shapes, i.e. circular and square cross sectional shapes. The ball-receiving core (2) has in its outer circumferential surface a spiral groove (8) or axial recesses (9). A caulked portion (5) consists of axially-extending projections or a circumferentially-extending projection. The ball (3) is formed spherically or like a roll. The width of the capillary ink flow space (a) is substantially 25-100 mu , and the width and depth of the ink passage (b) substantially 25-100 mu and 100-20 mu , respectively.
摘要翻译：由不锈钢或其他种类的金属材料的球保持管和球接收芯的组合制成的笔尖结构，以及诸如不锈钢或其它类型的陶瓷材料或金属材料球的钢，并且用作笔尖，其需要具有高生产率，优异的书写性能，特别是优异的油墨提取性能，用于各种用途的圆珠笔。这个笔尖的构造如下。球接纳芯（2）在球保持管（1）中被铆接，其间具有轴向延伸的通过空间（a）。油墨通道（b）形成为沿着球保持管（1）的内部的端部中构成球保持部（4）的底面的平坦端面部（2a）延伸，，使得墨通道（b）与通孔（a）的端部连通。笔尖结构中的墨水通道（b）形成为使得其与球接收表面（6）的中心部分独立地或者与球体接收表面（6）的中心部分相连接或围绕。球接收芯（2）形成为使得其外径大于球（3）的直径。球保持管（1）的内径大致等于球（3）的直径。球保持管（1）的内表面和球接收芯（2）的外表面具有相似的横截面形状，即圆形或正方形横截面形状，或不同的横截面形状，即圆形和方形截面形状。球接收芯（2）在其外圆周表面上具有螺旋槽（8）或轴向凹槽（9）。铆接部分（5）由轴向延伸的突出部或周向延伸的突出部组成。球（3）球形或类似于辊。毛细管墨水流动空间（a）的宽度基本上为25-100μm，墨水通道（b）的宽度和深度分别为25-100μm和100-20μm。

2. 发明申请

WO1990014963A1 PEN POINT MADE OF INORGANIC MATERIAL 审中-公开
标题翻译：无机材料的笔尖
公开(公告)号：WO1990014963A1
公开(公告)日：1990-12-13
申请号：PCT/JP1990000746
申请日：1990-06-07
申请人： TEIBOW CO., LTD. , SHIMOISHI, Tetsuo , KAWASHIMA, Kenshi , TEZUKA, Kanji
发明人： TEIBOW CO., LTD.
IPC分类号： B43K01/00
CPC分类号： B43K1/003
摘要： A pen point made of an inorganic material, which is free of restrictions on the viscosity of ink and the particle diameter of pigment to be used, excellent in buckling strength, highly resistant to wear and solvent, and capable of mass production at low cost. It has such a structure that a mixture of fine particles of metal or ceramic with a binder is extruded, degreased, and sintered to form a continuous piece having a uniform cross-section and provided with through holes of various profiles along its axis permitting capillary movement of ink and grooves for ink passage with one end thereof forming a part of the surface sharpened at its tip to be used mainly for writing.

3. 发明申请

WO1987002313A1 STRUCTURE OF PEN TIP 审中-公开
标题翻译：笔尖结构
公开(公告)号：WO1987002313A1
公开(公告)日：1987-04-23
申请号：PCT/JP1986000529
申请日：1986-10-17
申请人： TEIBOW CO., LTD. , OTSUKA, Katsumi
发明人： TEIBOW CO., LTD.
IPC分类号： B43K01/08
CPC分类号： B43K1/08 , B43K7/10 , B43K8/20
摘要： The structure of a ball-point pen tip comprising the combination of a ball holding tube made of any material selected from metals such as stainless steel, plastics such as super-engineering plastics or ceramics, a ball retaining core and a ball, and satisfying various requirements for ball-point pens using a low-viscosity ink, such as drain-back resistance of ink, smooth beginning of writing, returnability of ink, high-speed writability, stable ink supply smooth ball rotation and high productivity. The ball retaining core (2) is fixed within the ball holding tube(1) and the ball (4) is rotatably retained in a ball holding unit (3). An ink communication space (5), which communicates with this ball holding unit (3), is defined between the outer surface portion (6) of the ball retaining core (2) and the inner surface portion (7) of the ball holding tube (1) in such a manner that ink can flow in an axial direction through capillaries. A projecting wall portion (12) is formed between the external portion (9) of a substantially flat, ball retaining portion (8) of the ball retaining core (2) at the ball holding unit (3), the surface portion (10) of the ball (4) adjacent to the former and the inner surface portion (11) of the ball holding tube (1), so that a capillary guide path (13) of the ink communicating with the ink communication space (5) is defined between the surface portion (10) of the ball (4) and the projecting wall portion (12). The projecting wall portion (12) of this pen tip structure is formed at the external portion (9) and/or the inner surface portion (11). The cross-sectional area of the ink communication space (5) is set to be greater than that of the capillary guide path (13) without changing the capillary gap.

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