Hammer device having adjustable striking force

Details Hammer device having adjustable striking force Hammer device having adjustable striking force

1990-02-20

1991-09-03

Wiecking, David A.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Imprint by movement of record-medium against type-face

4001442, 101 9303, B41J 944

Patent

active

050447939

ABSTRACT:
A hammer device generates a magnetic moving force in a magnetic member by energizing a coil, whereby a hammer strikes a recording sheet to form a record thereon by means of its moving force, the striking force of the being capable of regulation by changing the relative position of the coil and the magnetic member without changing the position of the hammer.

REFERENCES:
patent: Re29745 (1978-08-01), Gomi
patent: 3900094 (1975-08-01), Larsen et al.
patent: 3964384 (1976-06-01), Johnston
patent: 4308794 (1982-01-01), Adamoli et al.
patent: 4491069 (1985-01-01), Kawahara
patent: 4569607 (1986-02-01), Takemoto
patent: 4603985 (1986-08-01), Helinski et al.
Xerox Disclosure Journal, "Hammer Rebound Retention", by Frechette, vol. 1, No. 4, Apr. 1976, p. 23.

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