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Title:
STATIONERY
Document Type and Number:
Japanese Patent JP2010017992
Kind Code:
A
Abstract:

To provide stationery stabilizing the ejection amount of a medium when in use to stabilize quality in the use of the medium from the beginning to the end of use by preventing the consumption of the medium from affecting a medium supply pressure that pressurizes the inside of a medium storage tube by a pressurizing pump mechanism.

The medium storage tube 6 storing the medium 5 is held in a body shaft cylinder 2, and the pressurizing pump mechanism 16 pressurizing the opening rear end 6b of the medium storage tube 6, interlocked with the knocking operation of a knock mechanism 10 provided at the rear end of the body shaft cylinder 2, is provided behind the opening rear end 6b of the medium storage tube 6. A pressure regulating mechanism 26 capable of always maintaining constant pressurizing force in the opening rear end 6b of the medium storage tube 6 in knocking operation without being affected by a decrease in the residual amount of the medium in the medium storage tube 6 is provided between the inside of the opening rear end 6b of the medium storage tube 6 and the pressurizing pump mechanism 16.


Inventors:
TANIGUCHI SHUNICHI
Application Number:
JP2008182613A
Publication Date:
January 28, 2010
Filing Date:
July 14, 2008
Export Citation:
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Assignee:
TOMBOW PENCIL
International Classes:
B43K7/03; B43L19/00; B43M11/00
Domestic Patent References:
JP2008044338A2008-02-28
JP3096772U2003-10-03
JPS49147025U1974-12-19
JP2009051171A2009-03-12
JP2009154380A2009-07-16
Attorney, Agent or Firm:
Soichi Takezawa
Noritsugu Nakama
Hiroyuki Mori



 
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