Armature supporting structure of a print head

Details Armature supporting structure of a print head Armature supporting structure of a print head

1987-07-30

1988-12-20

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

047922478

ABSTRACT:
A supporting plate, which is formed of a bendable plate material, includes coupling portions extending in the radial direction of the supporting plate and individually fixing armatures arranged radially, torsion bars paired so as to extend sideways from their corresponding coupling portions, at positions corresponding the respective proximal end portions of the armatures, and leaf spring members paired so as to be fixed to their corresponding armatures by means of the coupling portions, at positions inside the proximal end portions of the armatures, with respect to the radial direction, and to extend radially inward. The leaf spring members are arranged on either side of each armature. Each spring member has an arm portion bendable in the longitudinal direction of its corresponding armature. If the armatures are pulled and swung by means of electromagnetic devices, the torsion bars are twisted, and the leaf spring members are bent. Thus, the armatures are supported and subjected to a resilient force in the restoring direction.

REFERENCES:
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patent: 4411538 (1983-10-01), Asano et al.
patent: 4618277 (1986-10-01), Asano et al.
patent: 4634301 (1987-01-01), Sakaida
patent: 4652158 (1987-03-01), Asano

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