PURPOSE: To contrive to reduce printing noise, by a method wherein the stroke of a needle for transferring a magnetic ink onto a recording paper is limited so that the needle does not make contact with the paper, and the magnetic ink adhered to the tip of the needle is attracted to the paper by a magnetic force of an ink-transferring magnetic pole.
CONSTITUTION: When an electric current is passed to a magnetic ink attracting coil 18, a magnetic ink 26 contained in an ink tank 22 is attracted by a magnetic flux generated between magnetic poles 21, and the tip of the needle 9 is wetted with the ink 26. When a specified electromagnet 7 is excited, an armature 11 is attracted by a core 14, but since the stroke of the armature is limited by an attracting surface 15, the stroke of the needle 9 is also limited. Namely, the needle 9 approaches the recording paper 36, and the ink 26 adhered to the tip of the needle 9 is transferred onto the paper 36 by the inertia thereof and a magnetic force of the ink-transferring magnetic pole 37, thereby forming a dot. Accordingly, since the needle 9 does not impact on the paper 36 or the magnetic pole 37, printing noise can be reduced.
TSUGE TAKEYOSHI
TORISAWA YOSHIHIRO
MAKINO AYUMI
| JPS57159662A | 1982-10-01 | |||
| JPS5695682A | 1981-08-03 |