Patent ID: 6910655

Claim:
A roll shaft hung with a bearing portion of a recording medium supply apparatus for holding a rolled recording medium, wherein the recording medium is fed by rotating the roll shaft together with the recording medium, the roll shaft comprising: a roll shaft body which is inserted through a core of the rolled recording medium; a latching portion mounted outside of one end portion of the roll shaft body, being latched with the bearing portion; a one-way connection portion mounted inside of the one end portion of the roll shaft body, rotatable with respect to the latching portion in only a direction opposite to a direction of feeding in the recording medium; and a torque transmission limiting portion which is mounted inside of the one end portion of the roll shaft body, wherein the torque transmission limiting portion releases a transmission of torque if the torque applied to the roll shaft body is not less than a predetermined value and transmits the torque if the torque is less than the predetermined value when the recording medium is fed.