Sheet feed devices and image recording apparatuses comprising such sheet feed devices

A sheet feed device comprising:

• a motor configured to selectively rotate in a first direction and a second direction opposite to the first direction;
• a first tray configured to store a first sheet therein;
• a second tray configured to store a second sheet therein;
• a first rotary member configured to contact the sheet in the first tray and to feed the sheet in a sheet feed direction;
• a second rotary member configured to contact the sheet in the second tray and to feed the sheet in the sheet feed direction;
• a first transmitting mechanism comprising a first end connected to the motor and a second end opposite the first end connected to the first rotary member, the first transmitting mechanism comprising a first switching member configured to transmit a rotational force of the motor to the first rotary member when the motor rotates in the first direction and to interrupt transmission of the rotational force of the motor to the first rotary member when the motor rotates in the second direction;
• and
• a second transmitting mechanism comprising a first end connected to the motor and a second end opposite the first end connected to the second rotary member, the first transmitting mechanism comprising a second switching member configured to transmit the rotational force of the motor to the second rotary member when the motor rotates in the second direction and to interrupt transmission of the rotational force of the motor to the second rotary member when the motor rotates in the first direction.

An image recording apparatus comprising:

• a sheet feed device comprising:
• a motor configured to selectively rotate in a first direction and a second direction opposite to the first direction;
• a first tray configured to store a first sheet therein;
• a second tray configured to store a second sheet therein;
• a first rotary member configured to feed the first sheet in a sheet feed direction;
• a second rotary member configured to feed the second sheet in the sheet feed direction;
• a first transmitting mechanism configured to transmit a rotational force of the motor in a first transmitting direction, wherein the first transmitting mechanism comprises an upstream portion connected to the motor, and a downstream portion connected to the first rotary member;
• a second transmitting mechanism configured to transmit the rotational force of the motor in a second transmitting direction, wherein the second transmitting mechanism comprises an upstream portion connected to the motor, and a downstream portion connected to the second rotary member;
• a first idling mechanism;
• and
• a second idling mechanism, wherein when the motor transitions between rotating in the first direction and rotating in the second direction, the first idling mechanism is configured to allow the upstream portion of the first transmitting mechanism to perform an idle rotation with respect to the downstream portion of the first transmitting mechanism, and the second idling mechanism is configured to allow the upstream portion of the second transmitting mechanism to perform an idle rotation with respect to the downstream portion of the second transmitting mechanism;
• and
• a recording unit configured to record an image on one of the first sheet and the second sheet fed by the sheet feed device.