| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pressurizing pen which enables easy execution of a knocking operation by a small force and excels in the feeling in the use. <P>SOLUTION: A pressurizing pump mechanism 16 is constituted of a pressurizing member 18 which has a pressurizing chamber 21 communicating with the inside of a medium holding tube 6 and is so provided at the rear end opening part 6b of the medium holding tube 6 as to be extensible and contractible axially, and of a pressing member 17 which presses the pressurizing member 18 in the direction of compression and also operates with a push-in motion of a knocking mechanism 10. The inside of the medium holding tube 6 is pressurized by making the pressurizing member 18 change in the shape with compression by the pressing member 17 so that the pressurizing chamber 21 is brought to an airtight state, while the pressurizing member 18 is so restored as to extend axially by a pressing-opening motion of the pressing member 17 and thereby the inside of the medium holding tube 6 is kept in a state of communication with the open air. <P>COPYRIGHT: (C)2008,JPO&INPIT |
