| 摘要 |
PURPOSE:To contrive a high-speed printing, by a method wherein, a plurality of unit printing mechanisms, each of which consists of an armature, a printing wire, a magnetic circuit member, and a coil, are arranged in a line or ring form so that shaft bodies are disposed to be flush with each other. CONSTITUTION:A plurality of unit printing mechanisms 35, each of which consists of an armature 29, a printing wire 12, a magnetic circuit member 24 composed of yokes 21, 23, a permanent magnet 22, and an iron core 3 wound with a coil 4, and the coil 4, are arranged in a line or ring form so that shaft bodies 28 with the securely mounted seesaw-form armatures 29 are disposed to be flush with each other. The permanent magnets 22 of the adjacent unit printing mechanisms 35 are magnetized reversely to each other. In this manner, the center of gravity of the armature provided with the printing wire can be made to just or approx. coincide with the shaft body. Due to the decrease of a moment of inertia and little magnetic interference, a high-speed printing can be contrived. |
