| 摘要 |
PURPOSE:To easily set the value of a minimum recording trace pitch to a desired value by making an angle of a linear lattice part in a light beam scanning detection means variable to a direction orthogonal to a direction of lattice extension with respective to a line scanning direction of a 2nd light beam. CONSTITUTION:The recorder is provided with a card support 11, a light beam incidence control section, a recording signal transmission section 60, and a light beam driving means modulated based on a recording information to scan a 1st light beam made incident in an optical card in a prescribed direction with respect to the optical card and to write the recording information signal onto the optical card. In such a case, an angle of a linear lattice section 52 of an optical beam scanning detection means 50 to a 2nd light beam line scanning direction orthogonal to a direction of the lattice extension is varied to change the pitch in the 2nd light beam line scanning direction. Thus, the value of a minimum recording trace pitch in the write of the recording information signal with respect to the optical card is set to a desired value with very easily and high accuracy. |
