Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1991-12-18
1992-10-20
Eickholt, Eugene H.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 9305, B41J 302
Patent
active
051564696
ABSTRACT:
An improved impact dot print head having improved electrical integrity and improved heat radiating qualities is provided. The print head includes a magnetic frame, a plurality of solenoids coil for driving print wires mounted on the frame, a nose for guiding the wires, a printed circuit board mounted on the nose and electrically connected to a terminal part of the solenoid coil holes in a spacer disposed between the frame and printed circuit board. The spacer, frame, printed circuit board and nose are positioned to prevent rotational and translational movement. The spacer is an insulating material or metal coated with an insulator for radiating heat away from the print head and allows a low viscosity silicone resin to be injected into the frame for assisting in transferring heat.
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Asada Takashi
Tanaka Minoru
Eickholt Eugene H.
Kaplan Blum
Seiko Epson Corporation
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