Omron Corporation

Nobuaki Omata

Atsushi Irie

Atsushi Osada

Masanobu Segawa

The invention relates to a method of manufacturing a strain element. In one aspect, the method of the invention comprises forming a coating film of titanium or a titanium compound on a surface of a cylindrical mold, and shaping the coating film like a coil. The method invention further comprises forming a crystal film of a strain element having a property of a piezoelectric inverse effect by hydrothermal synthesis on the coating film shaped like the coil, and removing the strain element from the cylindrical mold.

Method of manufacturing a strain element

There is provided a small and inexpensive actuator which has a simple structure and can obtain a large displacement. When voltage is applied to electrodes and formed on an inner circumferential surface and an outer circumferential surface of a piezoelectric ceramic wound like a coil, deformation occurs in such a direction that an inner circumferential side of the piezoelectric ceramic wound like the coil is contracted, and an outer circumferential side is expanded. Accordingly, if one end portion of the piezoelectric ceramic formed into the coil shape is fixed, the other end portion is rotated in accordance with the deformation of contracting the diameter of this coil.

Actuator and method of manufacturing a strain element

A paper quality determining sensor and a faulty paper sorting device capable of detecting reaction forces of paper sheets themselves which vary according to paper quality using a plurality of rollers so as to detect the stiffness (rigidity) of paper sheets accurately without being affected by thicknesses of the paper sheets.

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Kyoto, Japan

Nobuaki Omata