Patent ID: 7815271

Claim:
A recording medium driving device for driving a recording medium, comprising: a recording and/or playback unit for performing at least one of recording of a data signal on a recoding surface of said recording medium, and playback of a data signal from said recording surface; a printing unit for printing visible information on a main surface different from said recording surface of said recording medium using an inkjet method; a driver for performing driving as to said recording medium; and a drive control unit for switching a driving speed of said driver between (1) a first driving speed for a printing mode for printing visible information on said main surface, the first driving speed being less than 1.4 m/s at an outermost circumference of the recording medium, and (2) a second driving speed for a recording/playback mode for recording or playback of said data signal on/from said recording surface, wherein said printing unit adjusts a number of times of ink discharge per unit time depending on the radius distance from the center of said recording medium of the printing position of said visible information.