PURPOSE: To prevent the dispersion of the quantity of a recording medium carried, which is generated resulting from the eccentricity, etc., of a driving roller.

CONSTITUTION: The perimeter of an upstream-side driving roller 31 is equal to the whole length in the row direction of the recording element 11 of a recording head 1, and the perimeter of a downstream-side driving roller 41 is made slightly larger than the whole length. Both driving rollers can move a recording medium 8 at every fine size. A paper-end sensor 7 is arranged on the upstream side farther than a distance corresponding to the overall length of the recording head 1 from the upstream-side driving roller 41. The pushing force of an upstream-side follower roller 32 is varied by the signal of the paper-end sensor 7. According to the constitution, periodic deviation by the eccentricity, etc., of both driving rollers is offset in the quantity of the recording medium 8 carried, absolute deviation due to the dispersion, etc., of the outside diameters of both driving rollers can be corrected discretely, and no deviation is generated even at the time of delivery between both driving rollers, and deviation is kept constant at all times.