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1. 发明授权

EP2581234B1 WRITING INSTRUMENT 有权
公开(公告)号：EP2581234B1
公开(公告)日：2020-08-12
申请号：EP11795742.3
申请日：2011-06-14
申请人： Mitsubishi Pencil Company, Limited
发明人： KAMITANI Toshimi , OKUYAMA Hiroyuki , KAWABATA Mitsuhiro , KOURIKI Tadashi
IPC分类号： B43K1/12 , B43K8/02 , B43K8/00 , B43K8/03 , B43K8/04

2. 发明公开

EP3835077A1 PEN TIP AND WRITING TOOL PROVIDED WITH SAID PEN TIP 审中-实审转让
公开(公告)号：EP3835077A1
公开(公告)日：2021-06-16
申请号：EP19846313.5
申请日：2019-08-07
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： KAMITANI Toshimi
IPC分类号： B43K1/12 , B43K8/02 , C09D11/16
摘要： To provide a pen tip that can enhance its color brilliance and color distinctiveness as well as providing a writing tool having the pen tip. A pen tip A of the present invention is a pen tip equipped with a pen core 20 containing a concealing material, and is characterized in that the pen core has the lightness (L* value) of 80 or higher in the L*a*b* (CIELAB) color system. The writing tool, for example, includes a retention body 10 having a visible part allowing visual recognition of the writing direction and the pen tip A having the above configuration and attached with the retention body 10.

3. 发明公开

EP3805008A1 WRITING IMPLEMENT 审中-实审转让
公开(公告)号：EP3805008A1
公开(公告)日：2021-04-14
申请号：EP19812446.3
申请日：2019-05-28
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： OGIWARA Yasuaki , MORIYA Naohiko , KAMITANI Toshimi
IPC分类号： B43K8/04 , B43K8/02
摘要： Provided is a writing implement having a pen tip that can achieve excellent ink outflow performance and an increase in the effective area of a viewer portion allowing recognition of the writing direction, relative to the whole pen tip. The writing implement is a writing implement A which includes a pen tip 20 feeding ink from a writing implement body 10 and having a viewer portion through which the writing direction can be recognized, and is characterized in that the pen tip 20 is configured of, a least, a writing part 30 and a holding body 40 having a viewer portion 43, and the holding portion 40 has a sheet-shaped ink feeder 25 formed with slits or bumps on the surface and inside thereof to produce a capillary action.

4. 发明公开

EP3505363A1 WRITING IMPLEMENT 审中-实审转让
公开(公告)号：EP3505363A1
公开(公告)日：2019-07-03
申请号：EP17843676.2
申请日：2017-08-24
申请人： Mitsubishi Pencil Company, Limited
发明人： SUZUKI Hitoshi , HIRANO Kouichi , SAWA Yukinori , KAMITANI Toshimi
IPC分类号： B43K1/00 , B43K8/02
摘要： To provide a writing instrument capable of further improving durability of a writing nib without impairing writing performance even when writing is performed with a heavy writing load. A writing instrument A having a writing part formed of at least a writing nib 30 made of a porous body and a retainer 40 made of a hard material, in which the protrusion amount of the distal end of the writing nib 30 from the retainer 40 is 0.65 mm or more and 1.05 mm or less and/or 40% or more and 65% or less of the thickness of the writing nib 30.

5. 发明公开

EP2933117A1 WRITING INSTRUMENT 无效
标题翻译：写作工具
公开(公告)号：EP2933117A1
公开(公告)日：2015-10-21
申请号：EP13861266.8
申请日：2013-12-03
申请人： Mitsubishi Pencil Company, Limited
发明人： KAMITANI Toshimi , BANZAI Satoru , NAMIKI Yoshiharu , SETAGAWA Yosuke , KINO Hitoshi , NAKAJIMA Tooru , SUZUKI Takanori
IPC分类号： B43K7/02 , B43K7/08 , B43K8/03
CPC分类号： B43K23/12 , B43K5/18 , B43K7/01 , B43K7/02 , B43K7/03 , B43K7/08 , B43K7/10 , B43K8/026 , B43K8/03 , B43K8/04 , B43K8/06 , B43K8/143
摘要： Provide is a writing instrument suited to ballpoint pens, marking pens and the like in which a flow pressure of an ink applied to a pen tip is controlled to a fixed level to prevent an ink direct flow phenomenon•reverse flow phenomenon. The above writing instrument comprises a pen tip 20 disposed at a front part of an ink tank 10, an ink 25 received in the ink tank 10, a follower 30 filled at a rear part of the ink 25, and a capillary porous member 40 provided with a capillary force, which is arranged at a space part 15 between a rear part of the follower 30 and a rear end part of the ink tank 25 in a state in which the follower 30 is filled, wherein the pen tip is sealed when a cap is put on the writing instrument.
摘要翻译：提供一种适用于圆珠笔，书写笔等的书写工具，其中将施加到笔尖上的墨水的流动压力控制为固定水平以防止墨水直流现象。●逆流现象。上述书写工具包括设置在墨盒10的前部的笔尖20，容纳在墨盒10中的墨水25，填充在墨水25的后部的随动件30以及设置的毛细管多孔构件40 利用毛细管力在从动件30被填充的状态下布置在从动件30的后部和墨罐25的后端部之间的空间部分15处，其中笔尖在帽子放在书写工具上。

6. 发明公开

EP4227109A1 FIBER BUNDLE BODY FOR WRITING UTENSIL, PENPOINT USING SAME, AND WRITING UTENSIL 审中-实审转让
公开(公告)号：EP4227109A1
公开(公告)日：2023-08-16
申请号：EP21877720.9
申请日：2021-10-07
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： TAKAHASHI Toshihiro , KAMITANI Toshimi , IZAWA Hirotake
IPC分类号： B43K1/12 , B43K5/18 , B43K8/02 , B43K8/06
摘要： Provided is a fiber-bundled part for writing instruments having excellent strength and durability, as well as a pen tip and a writing instrument using the fiber-bundled part, which can be suitably used for pen tips, ink feed cores and relay cores of writing instruments such as marking pens and felt-tip pens. The fiber-bundled part for writing instruments of the present disclosure is used for the ink feed core leading to the pen tip or a writing pen core, and comprises a multifilament of long fibers having different melting points, and the multifilament at least contain crimped fibers.

7. 发明公开

EP4011640A1 WRITING IMPLEMENT 审中-实审转让
公开(公告)号：EP4011640A1
公开(公告)日：2022-06-15
申请号：EP20853297.8
申请日：2020-08-03
申请人： MITSUBISHI PENCIL COMPANY, LIMITED
发明人： IZAWA Hirotake , KAMITANI Toshimi
IPC分类号： B43K1/12 , B43K8/02
摘要： Provided is a writing implement having a pen tip having a viewer part where the effective area for allowing visual recognition of the writing direction relative to the entire pen tip is maximized without impairing ink discharge. The writing implement of this configuration is a writing implement A including a pen tip 20 that feeds ink from a writing implement body 10 and has a viewer part through which the writing direction can be recognized, characterized in that the pen tip 20 is configured of, at least, a holding body 40 having the viewer part and a writing part 25 that attaches a writing core 30 having a U-shaped or L-shaped configuration to the holding body 40, and the part of the writing core 30 in contact with the side surface of the holding body 40 is formed to have a square cross-section.

8. 发明公开

EP2581234A1 WRITING INSTRUMENT 有权
标题翻译： SCHREIBINSTRUMENT
公开(公告)号：EP2581234A1
公开(公告)日：2013-04-17
申请号：EP11795742.3
申请日：2011-06-14
申请人： Mitsubishi Pencil Company, Limited
发明人： KAMITANI Toshimi , OKUYAMA Hiroyuki , KAWABATA Mitsuhiro , KOURIKI Tadashi
IPC分类号： B43K1/12 , B43K8/02
CPC分类号： B43K1/006 , B43K8/003 , B43K8/02 , B43K8/03 , B43K8/04 , B43K23/12
摘要： In order to provide a writing instrument in which a writing direction can be visually recognized in a broad range at a visual part of a pen tip and which can surely write to end of writing, the writing instrument is endowed with a constitution in which a pen tip 40 is equipped with a porous member 45 as a writing part and a holding member 55 holding the above porous member 45 and having at least one ink guiding part 50 through which an ink contained in a barrel 10 is provided to a writing part held by the holding member 55 which is a visible part enabling to visually recognize a writing direction, wherein an area ratio of the visible part is 40% or more of the pen tip 40 protruding from a tip part of the writing instrument.
摘要翻译：为了提供一种书写工具，其中可以在笔尖的视觉部分的宽范围内可视地识别书写方向，并且可以肯定写入书写结束，书写工具被赋予其中笔尖端40配备有作为书写部分的多孔构件45和保持上述多孔构件45并具有至少一个墨水引导部分50的保持构件55，通过该至少一个墨水引导部分50将包含在镜筒10中的墨水提供到由保持构件55，其是能够可视地识别书写方向的可见部分，其中可见部分的面积比是从书写工具的尖端部分突出的笔尖40的40％或更多。

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