Conveyor device

A conveyor device, comprising:

• a drive source configured to produce:
• a first rotational driving power by a forward rotation of the drive source;
• and a second rotational driving power by a reverse rotation of the drive source;
• a first conveyor comprising a first drive roller and a first driven roller;
• a second conveyor disposed downstream of the first conveyor in a conveying direction, the second conveyor comprising a second drive roller and a second driven roller;
• a first power transmitter configured to transmit the first rotational driving power and the second rotational driving power to the first drive roller, the first power transmitter being configured to have the first conveyor convey the sheet in the conveying direction while nipping the sheet when the first rotational power is transmitted to the first drive roller, the first power transmitter being configured to have the first conveyor convey the sheet in a direction opposite the conveying direction when the second rotational power is transmitted to the first drive roller;
• a second power transmitter configured to transmit the first rotational driving power to the second drive roller and not to transmit the second rotational driving power to the second drive roller, the second power transmitter being configured to have the second conveyor convey the sheet in the conveying direction while nipping the sheet when the first rotational power is transmitted to the second drive roller;
• a controller configured to control the drive source to perform intermittent conveyance in which a conveyance of the sheet by transmission of the first rotational driving power to the first drive roller and the second drive roller and a stop of the sheet conveyed are alternately repeated a plurality of times;
• and
• a storage configured to store first information and second information each representing velocity information of the first drive roller and the second drive roller from a start of rotation thereof to a stop of the rotation thereof in one conveyance of the sheet in the intermittent conveyance, and wherein at least one of a velocity and a deceleration, in the velocity information, of the first drive roller and the second drive roller from a constant-velocity state after an increase in velocity from the start of the rotation, to the stop of the rotation is less in the second information than in the first information,
• wherein the controller is configured to execute:
• a first rotation processing in which, when a state in which the sheet is nipped by the first conveyor is kept during a next conveyance of the sheet in the intermittent conveyance, the first drive roller and the second drive roller are rotated according to the first information in the next conveyance of the sheet;
• and
• a second rotation processing in which, when the state in which the sheet is nipped by the first conveyor is not kept in the next conveyance of the sheet, the first drive roller and the second drive roller are rotated according to the second information in the next conveyance of the sheet.