| 摘要 |
Rebounding of armatures driving print needles in a matrix print head, the armatures being arranged in a star pattern, is prevented by having them abutting against a ring, preferably of fluoro rubber having hardness from 60 to 90 shore A and being bonded to a central sleeve, preferably made of aluminum, by two component adhesive that can withstand at least 100 degrees C, preferably epoxy resin and a modified amide.
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