公开(公告)号：EP2977224A4

公开(公告)日：2016-11-23

申请号：EP14768177

申请日：2014-03-17

申请人： PILOT CORP ALSO TRADING AS PILOT CORP KK

发明人： HOSHINO TAKANORI

IPC分类号： B43K5/14 ,  B43K5/18 ,  B43K7/02 ,  B43K7/10 ,  B43K8/02 ,  B43K8/03 ,  B43K8/04

CPC分类号： B43K5/145 ,  B43K5/14 ,  B43K5/1827 ,  B43K7/02 ,  B43K7/10 ,  B43K8/022 ,  B43K8/03 ,  B43K8/04

摘要： A writing instrument 1 includes: a writing instrument body and an ink cartridge 6 connected to a rear end side of the writing instrument body. The ink cartridge 6 includes a bottomed cylindrical container 7 with an opened front end and a plug 8 fitted into an inner circumferential surface of an opening 72 of the container 7. The writing instrument body includes a projection 53 that opens the ink cartridge 6 when inserted into the opening 72 to press the plug 8 rearward and an air tight connecting portion 52, formed separately from the projection 53, that surrounds the projection 53. The opening 72 is divided into a plurality of openings by air tight fitting the opening 72 in the air tight connecting portion 52. Thus, a plurality of longitudinal channels are formed on an outer periphery of the projection 53. At least one of the plurality of channels serves as an ink channel and at least one of the other channels serves as an air intake path.

公开(公告)号：EP3050712A4

公开(公告)日：2017-05-03

申请号：EP14846711

申请日：2014-09-16

申请人： KK PILOT CORP

发明人： HOSHINO TAKANORI

IPC分类号： B43K5/14 ,  B43K8/03

CPC分类号： B43K5/145 ,  B43K5/14 ,  B43K5/18 ,  B43K7/02 ,  B43K7/08 ,  B43K7/10 ,  B43K8/02 ,  B43K8/022 ,  B43K8/03 ,  B43K8/04 ,  B43K8/08

摘要： Provided is a writing instrument, having high cartridge replaceability and excellent convenience, that is capable of suppressing inappropriate ink leakage that easily occurs when a used cartridge container is pulled out even when the writing instrument uses a replacement ink cartridge with a plug to be press opened. A writing instrument includes: a replacement ink cartridge including a bottomed cylindrical container that has an opened front end and a closed rear end and a plug fitted into an inner circumferential surface of an opening of the container; and a projection inserted into the opening of the container to press the plug rearward, thereby opening the plug of the ink cartridge, wherein the projection and the plug are fitted when the plug is press opened, and when the cartridge is replaced, the fitting between the projection and the plug is released and the plug is locked again in the opening of the container.

摘要翻译： 本发明提供一种书写工具，该书写工具具有高的笔芯可替换性和优异的便利性，其能够抑制即使当书写工具使用具有待插入的插头的替换墨盒时，在用过的笔芯容器被拔出时容易发生的不适当的墨水泄漏 。 一种书写工具，包括：替换墨盒，其包括具有开口前端和封闭后端的有底筒状容器以及装配到容器的开口的内周表面中的插塞; 以及插入到容器的开口中以将插头向后按压从而打开墨盒的插头的突起，其中当插头被按压打开时突起和插头配合，并且当更换墨盒时， 突起和插头被释放，并且插头再次被锁定在容器的开口中。

公开(公告)号：EP2873533A4

公开(公告)日：2016-05-11

申请号：EP13809309

申请日：2013-06-27

申请人： PILOT CORP

发明人： HAYAKAWA HISATOSHI ,  HOSHINO TAKANORI ,  ISHIKAWA ATSUSHI

IPC分类号： B43K29/02 ,  B43K7/12 ,  B43K24/04

CPC分类号： B43K7/12 ,  B43K1/086 ,  B43K7/005 ,  B43K24/04 ,  B43K29/02

摘要： Provided is a thermochromic retractable ballpoint pen including a friction body at a rear end of a barrel for easy thermochromicity only in a desired area. A retractable ballpoint pen is characterized by that the pen includes a friction body, at a rear end of the barrel, used for friction of handwriting in the thermochromic ink, enabling thermochromism of the handwriting in the thermochromic ink with frictional heat produced at that time, and having rubber-like elasticity, a maximum outer diameter of the rear end of the barrel is from 1.0 times to 1.5 times a maximum outer diameter of the friction body, a maximum width in a circumferential direction of the operating portion is less than the maximum outer diameter of the friction body, and an angle of a tangent to both the friction body and the operating portion from a writing surface is 60 degrees or more when the friction body is downward and an axial line of the barrel is in a vertical state relative to the writing surface.