Electromechanical actuator used in wire-dot printing head

Details Electromechanical actuator used in wire-dot printing head Electromechanical actuator used in wire-dot printing head

1996-12-16

1998-03-10

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

101 9305, H01L 4108

Patent

active

057265216

ABSTRACT:
An electromechanical actuator has a stack composed of electromechanical elements, and an inactive element intervening in the stack to divide it into two sections. In a wire-dot printing head using the actuator, the stack sections are successively energized to increase a forward stroke of a printing wire for a high speed printing. In another aspect, an electromechanical actuator used in a wire-dot printer has a spring for regulating and braking a rearward stroke of a printing wire or a stopper such that the wire can be prevented from being moved back beyond an initial position. Alternatively, a stopper is incorporated to forcibly stop the wire at the initial position during the rearward stroke thereof. In yet another aspect, an electromechanical actuator has a stack composed of electromechanical elements, and the stack is supported by a block through a leaf spring securely joined therebetween to prevent generation of large stress in the stack.

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Meier et al., "Matrix Printer Wire Actuator," IBM Technical Disclosure Bulletin, vol. 20, No. 11B, Apr. 1978, p. 4748.
Meier et al., "Matrix Printer Wire Actuator," IBM Technical Disclosure Bulletin, vol. 20, No. 11B, Apr. 1978, p. 4748.

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