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Title:
RECORDING DEVICE USING PENCIL PEN
Document Type and Number:
Japanese Patent JPH02252595
Kind Code:
A
Abstract:

PURPOSE: To prolong the life of a pencil pen, especially its lead chucking mechanism by feeding the lead only when its feed is required.

CONSTITUTION: If a recording instruction arrives and an action to move a pen downward, recording starts. A lead retaining member 23 is designed so that it is introduced into a pencil pen 2 in accordance with lead consumption. Consequently, the recording length of a protruding lead increases due to the amount of the lead fed each time by a knocking mechanism 21. A unit feed is performed each time a unit length of recording ends. The pencil lead 2 is retained by the rubber ring 231 of a lead retaining member 23 and a lead chucking mechanism 22. The lead retaining member 23 ascends with the upward movement of the pen. When the lead chucking mechanism 23 is opened by a knocking action, the lead is fed beyond the limit of a unit feed amount, that is, the feed amount equal to the introduction amount of the lead retaining member 23. The pencil lead 25 is consumed to such a degree that it no longer can record data, and the unnecessary lead 25 is discharged by downward movement of an actuator. Then a new lead is fed out and a sensor 111 checks the removal of the unnecessary lead.


Inventors:
YOYUU MASAHIDE
KIMURA SHOICHI
Application Number:
JP1989000075674
Publication Date:
October 11, 1990
Filing Date:
March 28, 1989
Export Citation:
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Assignee:
GRAPHTEC KK
International Classes:
B43L13/00; (IPC1-7): B43L13/00



 
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