| 摘要 |
Leaf spring (20) is overcome by a coil spring (15) when a cartridge cylinder (42) is not in place. In that status bottom gear (11) is engaged with bottom gear (17) so that movement from shaft (1) produces long ribbon feed. When a cartridge (40) is mounted having a cylinder (42) adapted to squeeze the spring (20), the force of coil spring (15) is overcome, and top gear (9) engages top gear (16), producing short ribbon feed.
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