Wire dot printer head and wire dot printer

Details Wire dot printer head and wire dot printer Wire dot printer head and wire dot printer

2005-02-01

2005-02-01

Colilla, Daniel J. (Department: 2854)

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

C400S124110

Reexamination Certificate

active

06848843

ABSTRACT:
A wire dot printer head of the present invention is configured by being provided with an abrasion preventive member which surrounds an outer circumference of support shafts of a plurality of armatures, between an armature spacer having a plurality of cutouts for respectively accommodating the support shafts of the plural armatures that respectively support printing wires, and a yoke which holds the support shafts of the plural armatures with the armature spacer. With this structure, the support shafts of the armatures do not directly contact with the yoke owing to the abrasion preventive member, thereby restraining abrasion of a surface of the yoke, and preventing a deterioration of printing quality.

REFERENCES:
patent: 4881832 (1989-11-01), Mitsuishi et al.
patent: 4988223 (1991-01-01), Hilkenmeier et al.
patent: 4993854 (1991-02-01), Sato
patent: 6698956 (2004-03-01), Terao
patent: 62101458 (1987-05-01), None
patent: 04031061 (1992-02-01), None
patent: 07-125265 (1995-05-01), None
patent: 09-187972 (1997-07-01), None
patent: 2001-219586 (2001-08-01), None
U.S. Appl. No. 10/375,476, filed Feb. 28, 2003, entitled “An Impact Dot Print Head and a Printer Including The Same”; Inventor.

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