| 摘要 |
There is disclosed a selection mechanism for a single element printer comprising an operating link connected with the print element for the driving rotation thereof and having a first and a second input portion, and a modifying member having the link mounted thereon for pivotal motion about the first input portion. A cam follower is provided on the modifying member for engagement by a case shift cam, which is operable independent of the print shaft, to shift between a pair of locations in either of which a first character selection means cooperates with the modifying member to position the latter in either of two distinctive positions so that the first input portion of the operating link is positionable to any of four positions. The second input portion of the link is associated with a second character selection means for positioning the link to any of a plurality of pivotal positions relative to the first input portion thereof. The selection mechanism is simply constructed by connecting all the input means to a single operating link mounted inclusively on the carrier and, therefore, the selection mechanism can be manufactured at a low cost. Maintenance and adjustment of the printer can also be greatly minimized.
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