Roll-sheet feeding device and image forming apparatus

A roll-sheet feeding device having a roll sheet wound in a roll to feed a portion of the roll sheet, the roll-sheet feeding device comprising:

• a progressive mechanism configured to transmit a drive force from a drive source to transfer the portion of the roll sheet from the roll in a progressive direction in which the roll sheet is transferred from the roll;
• a roll-sheet drive mechanism configured to receive a derived force transmitted via the portion of the roll sheet transferred in the progressive direction by the rotation of the roll rotationally driven by the drive force from the drive source;
• a rewinding mechanism configured to transfer the portion of the roll sheet in a direction opposite to the progressive direction via the roll-sheet drive mechanism to rewind the roll sheet;
• and
• a regenerating mechanism configured to obtain the derived force from the roll-sheet drive mechanism to transmit the obtained force to the progressive mechanism to regenerate the obtained force as a transferring force to transfer the roll-sheet from the roll in the progressive direction.