The 4T2R cell comprises a write transistor, a first variable resistive element, a first transistor, a second variable resistive element, a second transistor, and a charge control transistor. The robot is moveable with at least three degrees of freedom along a selectable one of a plurality of programmable predetermined paths. A dimension of one of the electrode terminations is set shorter than that of the other electrode termination. The second cooling unit has a second heat absorbing surface to directly or indirectly contact the recording material to absorb heat of the recording material.