Stylus printer impact energy control

Details Stylus printer impact energy control Stylus printer impact energy control

1977-07-28

1979-07-31

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

318126, 361152, 400166, 101 9303, B41J 312

Patent

active

041628586

ABSTRACT:
In a magnetically operated matrix printer a circuit makes a decision when a magnet is actuated. The decision is whether or not the relevant magnet has already been actuated during the printing of the previous column of the matrix character being printed. When it has not been actuated, it is actuated with a larger quantity of energy (longer pulse). Thus the operation of the printer is in "resonance" with the mechanical movements of the magnet armature.

REFERENCES:
patent: 3456161 (1969-07-01), Soltis
patent: 3711754 (1973-01-01), Nemoto
patent: 3789272 (1974-01-01), Vollhardt
patent: 3904938 (1975-09-01), Martin
patent: 3994381 (1976-11-01), Hebert

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