Sheet-supply unit using a single control solenoid

摘要

A sheet-supply unit including a drive source for supplying rotational drive power; a supply roller supplying one sheet at a time to a sheet transport pathway when rotated; a partial gear provided so as to rotate integrally with the supply roller and be capable of receiving transmission of rotational drive power from the drive source; a lever pivotable between a transmission mode wherein rotational drive power from the drive source is transmitted to the partial gear and a non-transmission mode wherein rotational drive power from the drive source is prevented from being transmitted to the partial gear; a pair of resist rollers disposed in the sheet transport pathway for stopping and aligning a sheet supplied by the supply roller and for transporting the aligned sheet, and capable of receiving rotation drive power from the drive source; an actuator capable of switching between a first mode and a second mode; and a switching mechanism for, based on the mode of the actuator, pivoting the lever into the transmission mode so that rotational drive power from the drive source is transmitted to the partial gear and so that the supply roller rotates to supply a sheet towards the pair of resist rollers and for temporarily preventing, directly before the supplied sheet reaches the pair of resist rollers, transmission of rotational drive power from the power source to the pair of resist rollers so that the supplied sheet abuts against and is aligned by the pair of resist rollers. <IMAGE>