Dot matrix printer having increased impact force and higher oper

Details Dot matrix printer having increased impact force and higher oper Dot matrix printer having increased impact force and higher oper

1987-08-27

1989-02-07

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

048027812

ABSTRACT:
The disclosure relates to a method of making a print head and the print head for a dot matrix printer, wherein there is provided a print wire actuator housing, a plurality of print wire actuators disposed in the housing, the actuators being arranged in the housing at points therein defined by (a) locating in a plane N parallel spaced lines, where N is an odd positive integer, (b) locating a point on the (N+1)/2 line from an extreme one of the lines, (c) defining points on a first arc of a circle having a center of curvature in the direction of the point and passing through the odd ones of the N lines at angles of (360 degrees/N).times.A with the (N+1)/2 line, where A is an integer from 0 to N and (d) defining points on a second arc of a circle having a center of curvature in the direction of the point and on the opposite side of the point as the first arc and passing through the even ones of the N lines at angles of (360 degrees/N).times.A with the (N+1)/2 line, where A is an integer from 0 to N.

REFERENCES:
patent: 4255062 (1981-03-01), Hendrischk
patent: 4415909 (1983-11-01), Italiano
patent: 4473311 (1984-09-01), Sakaida
patent: 4547085 (1985-10-01), Ochiai
patent: 4652158 (1987-03-01), Asano

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