Print head with lubricator

Details Print head with lubricator Print head with lubricator

1990-07-10

1993-04-27

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 228

Patent

active

052056597

ABSTRACT:
A matrix print head comprises several armature device groups which, in each case, comprise a magnet yoke (9) with an electromagnetic coil (10), disposed on one of the magnet yoke arms (9a), and an armature (8), which armature serves as a drive for a print element (2). The armature (8) can be moved in a rapid sequence against the pole faces (20b) of the magnet yokes (9) and back into a rest position. In order to reduce the wear at the pole faces (20a and 20b) or, respectively, at the wear faces (18), high temperature-stable lubricants can be disposed and intercalated in capillary hollow spaces (17) of armatures (8) and/or magnet yokes (9). These capillary hollow spaces (17) are adjoining and running to the wear faces (18).

REFERENCES:
patent: 4208138 (1980-06-01), Volke et al.
patent: 4756246 (1988-07-01), Kotasek et al.
patent: 4812061 (1989-03-01), Tsuyuki
patent: 4840501 (1989-06-01), Wong et al.

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