High-speed or high-definition dot matrix printing head

Details High-speed or high-definition dot matrix printing head High-speed or high-definition dot matrix printing head

1989-08-03

1992-01-07

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 304

Patent

active

050785214

ABSTRACT:
A dot matrix printing head on which the tips of the printing pins are supported on a matrix, in turn supported on a body designed to travel in the printing plane, in two side by side, parallel offset rows; mainly characterized by the fact that the matrix is supported in idle manner on the supporting body; the printing head presenting means for selectively turning the matrix into two angular positions, in a first of which, the rows of pins are substantially perpendicular to the printing plane for enabling high-definition printing, and in a second of which, both rows of pins are arranged obliquely in relation to the printing plane, and at such an angle that the tips of the pins in both rows are coplanar, thus enabling high-speed printing. (FIGS. 2 and 4).

REFERENCES:
patent: 4010835 (1977-03-01), Martin et al.
patent: 4031992 (1977-06-01), Murat et al.
patent: 4059182 (1977-11-01), Gustafsson et al.
patent: 4143979 (1979-03-01), Boyd
patent: 4794407 (1988-12-01), Vonasek
patent: 4812061 (1989-03-01), Tsuyuki
IBM Tech. Disc. Bulletin, vol. 24, No. 10, 3/82 Rotatable Wire Matrix Printhead.

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