Patent ID: 7185586

Claim:
A type-printer comprising: a type ring having types on the peripheral surface thereof; a permanent magnet or a permanent magnet to which a yoke is integrally attached; a select lever formed of a magnetic material, supported for rocking motion around a shaft, and having an engaging portion on one end thereof to engage the type ring and an opposite portion on the other end to face the permanent magnet across a gap; and a coil for imparting magnetic polarity to the select lever, wherein the select lever is rocked by means of attractive or repulsive force produced between the magnetic polarity of the select lever imparted by the coil and the magnetic polarity of the permanent magnet or the yoke, whereby the engaging portion of the select lever is anchored to or disengaged from the type ring to select the types, and the select lever is located in a stable position settled by the respective magnetic polarities of the select lever and the permanent magnet or the yoke, and a) where a yoke is not present, a gap exists between the opposite portion and the permanent magnet, and b) where at least one yoke is present, a gap exists between the opposite portion and the permanent magnet and further a gap exists between the opposite portion and an adjacentmost yoke.