Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1991-03-28
1993-05-04
Burr, Edgar S.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 9305, B41J 230
Patent
active
052075184
ABSTRACT:
A piezoelectric printer including a piezoelectric actuator having piezoelectric elements for driving printing elements. A drive voltage applied to the piezoelectric elements for printing operations fluctuates with a predetermined period and amplitude. The drive voltage applied to the piezoelectric elements can fluctuate with a period or amplitude related to a gradation signal for effecting printing gradation.
Burr Edgar S.
Hilten John S.
Seikosha Co. Ltd.
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