HIGH-SPEED WIRE PRINT HEAD WITH WIRE PRINT POSITION SHIFT APPARATUS

摘要

device for shifting of the position of a needle printing head comprising a plurality of matrix switches (42) which are movable longitudinally along guides (56, 60)64 and 65).one of the guides (64) can u00e9xtremitu00e9s printing pins (62) and can be moved transversely from a first position and a second position for printing by printinga support which can be moved (68).in the first position of printing needles are selectively to print characters defined by a first set of adjacent points substantially tangential and form circulaire.in the second position of printing needles are selectively to improve the printing of characters, with a second set of overlapping points, and running aspace corresponding to a half of the first set. the shift device (70, 86, 101) is located in the housing of the needle (10).