公开(公告)号：US20150298489A1

公开(公告)日：2015-10-22

申请号：US14647925

申请日：2013-12-03

申请人： MITSUBISHI PENCIL COMPANY, LIMITED

发明人： Toshimi KAMITANI ,  Satoru BANZAI ,  Yoshiharu NAMIKI ,  Yosuke SETAGAWA ,  Hitoshi KINO ,  Tooru NAKAJIMA ,  Takanori SUZUKI

IPC分类号： B43K23/12 ,  B43K8/02 ,  B43K8/06 ,  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： Provided 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 disposed at a front part of an ink tank, an ink received in the ink tank, a follower filled at a rear part of the ink, and a capillary porous member provided with a capillary force, which is arranged at a space part between a rear part of the follower and a rear end part of the ink tank in a state in which the follower is filled, wherein the pen tip is sealed when a cap is put on the writing instrument.

摘要翻译： 提供了一种适用于圆珠笔，标记笔等的书写工具，其中施加到笔尖的油墨的流动压力被控制到固定水平以防止油墨直接流动现象逆流现象。 上述书写工具包括设置在墨罐前部的笔尖，容纳在墨水容器中的墨水，填充在墨水后部的随动件以及设置有毛细管力的毛细管多孔件， 布置在从动件的填充状态下从动件的后部与墨水罐的后端部之间的空间部分，其中当将盖子放在书写工具上时，笔尖被密封。