Printing mechanism for an impact matrix printer

摘要

A printing mechanism has a cantilevered leaf spring of magnetic material and an electromagnet. A cantilevered first thin plate of magnetic material is disposed between the leaf spring and a core of the electromagnet. A second thin plate of nonmagnetic material is secured to the first thin plate adjacent to the leaf spring. A permanent magnet is provided to attract the leaf spring and the first thin plate to the core and to attract the first thin plate by residual magnetism upon energization of the electromagnet.