Patent ID: 7995431

Claim:
An optical disc device which can record and reproduce information by irradiating a face of an optical disc with laser light from an objective lens and perform label printing by irradiating the other face of the optical disc with the laser light from the objective lens, comprising: a circuit for forming a focus error signal for a focus servo based on a reflection light from the optical disc exposed to the laser light; and a data processing unit which can feedback-control a position to which the objective lens is moved by a focusing actuator, based on the focus error signal, wherein when performing the label printing, the data processing unit feedforward-controls a position to which the objective lens is moved by the focusing actuator based on control data for the label printing, an operation resolution of the focusing actuator in the feedforward control is made higher in comparison to an operation resolution of the focusing actuator in the feedback control, in the feedback control, a control accuracy of a position of the objective lens with respect to a position of a focal point on the optical disc is ±1 micrometer or smaller, and in the feedforward control, a control accuracy of a position of the objective lens with respect to a position of a focal point on the optical disc is between ±10 and ±30 micrometers.