Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1987-07-23
1989-05-23
Sewell, Paul T.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 9305, B41J 312
Patent
active
048325155
ABSTRACT:
A printing head includes a core section and a housing section coupled thereto. The core section has a core having a plurality of pole portions around which coils are wound. The core is arranged in the case and coupled therewith by means of an insulating resin filling a gap between the core and the case. A stopper is located in the case. The housing section includes a plurality of armatures and printing wires extending from the corresponding armatures. Each armature has an intermediate portion abutting the core, one end portion facing the stopper, and the other end facing the corresponding pole portion, and is rockable around the intermediate portion. The armature is urged by an urging member to an initial position where the one end portion abuts the stopper. When selected coils are energized, the other end portions of the corresponding armatures are attracted to the pole portions, so that the armatures are rocked to a printing position where the one end portion is spaced from the stopper. In accordance with the rocking of the armature, the printing wire moves axially.
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Kabushiki Kaisha Toshiba
Sewell Paul T.
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