| 摘要 |
A sheet feed mechanism installed in an image recorder for feeding sheets one by one out of a sheet cassette. A feed roller is driven in a rotary motion at a predetermined timing in a direction for feeding a sheet, while a reverse roller is pressed against the feed roller and driven in a rotary motion by a predetermined torque in a direction for returning the sheet. The feed roller functions to feed sheets out of the cassette alone. The feed roller and reverse roller cooperate to separate the sheets which are fed by the feed roller. A reverse shaft is formed integrally with the reverse roller. A torque limiter has a fixed hub and a free hub and provided integrally with the reverse roller and reverse shaft. A stop gear has a one-way clutch and engaged with the free hub. A coil spring generates a reverse torque.
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