Printing Flight Hammer Using Multilayer Piezoelectric Actuator

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Abstract
It has been found that a multilayer piezoelectric actuator can produce impact power. The impact energy was measured by experiments using a steel ball under varying experimental conditions. For example, the multilayer piezoelectric actuator of a rectangular prism with a 2×3 mm section and 18 mm height can impel a 4 mm diameter steel ball, whose mass is 0.25×10-3 kg, to a 0.27 m height. This energy is equivalent to 0.66 mJ. This impact energy is applicable to a dot matrix printing hammer. A trial model of a dot matrix printing hammer using this impact energy, as a method of flying an armature to a platen, has been manufactured in a simple mechanism.

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