Dot impact type printing head with adhesively attached base unit

Details Dot impact type printing head with adhesively attached base unit Dot impact type printing head with adhesively attached base unit

1991-09-16

1992-07-28

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

4001571, B41J 2235, B41J 2295

Patent

active

051336120

ABSTRACT:
In a print head of a dot matrix printer, support frames carrying the piezoelectric elements of the print wires are seated in and bonded to a base unit to provide a rigid, unitary printing structure. The base unit has projections extending therefrom which define grooves into which the support frames are received. An adhesive or solder is used to adhere the support frames to the base unit. Silicone rubber may also be used to fill gaps between the support frames and the base unit and between individual print units.

REFERENCES:
patent: 4049107 (1977-09-01), Murat
patent: 4589786 (1986-05-01), Fukui et al.
patent: 4874978 (1989-10-01), Sakaida et al.

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