| 摘要 |
PURPOSE:To enable increasing of a suction property and miniaturizing of a device, by a method wherein, through the formation of a minute slit in a hammer spring member, the member is divided into a moving part and a stationary part to form a composite magnetic path consisting of a main magnetic path, produced in the moving part, and a side magnetic path produced in the stationary part. CONSTITUTION:A plural number of ?-shaped slits with a minute gap 11 is formed in a hammer spring member 12 consisting of a spring laminar material, and the member 12 is separated into a stationary part 9 on the whole and a plural number of moving parts 10. A printing pin 7 is attached to the end of the moving part 10. A magnetic circuit, produced by a permanet magnet 3, consists of a main magnetic path A, passing the moving part 10, and a side magnetic path B passing the side of the slit having a minute gap, which results in sharply improving a magnetic saturation of the hammer spring member 12. |
