Print head for an impact dot printer

Details Print head for an impact dot printer Print head for an impact dot printer

1994-11-16

1996-07-30

Hilten, John S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

40012424, 40012425, B41J 2265

Patent

active

055405088

ABSTRACT:
A print head for an impact dot printer capable of printing on a printing medium is provided. The print head includes a plurality of print wires and a front end guide having guide holes for guiding the print wires to predetermined print positions. The front end guide has a front surface through which the print wires extend. A guide holding member is provided for holding the front end guide. Lubricant is injected into a back portion of the front end guide to reduce the friction between the print wires and the front end guide during the printing operation. The printer head includes projection members for holding the ink ribbon away from the guide means. The projection members are provided on the front surface of the guide members. The interface between the front end guide and the nose of the print head is provided with structure for preventing the passage of lubricant therebetween.

REFERENCES:
patent: 3987883 (1976-10-01), Darwin et al.
patent: 3991871 (1976-11-01), McIntosh
patent: 4447166 (1984-05-01), Ochiai et al.
patent: 4506999 (1985-03-01), Robertson
patent: 4613241 (1986-09-01), Kitagawa
patent: 5174663 (1992-12-01), Asada et al.

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