| 摘要 |
PROBLEM TO BE SOLVED: To form a uniform image using a multi-made laser emitting laser light having a plurality of oscillation wavelengths. SOLUTION: An image processing section 32 for an image data from a diagnostic unit such as a CT or an MRI, delivers an output, signal to a binarization circuit 30 where every pixel is binarized using a threshold value from a threshold value mask section 33 and data exchange is performed between '0 (unexposed part)' and '1 (exposed part)'. A laser drive circuit 31 is controlled according to the results and a signal is delivered to a semiconductor laser 5 on a multi-laser head 21 in order to perform recording by irradiating a recording medium with a generated laser beam from the opposite side of a recording layer. A multi-mode laser emitting a laser beam having a plurality of oscillation wavelengths and halt-band width of 1.2 nm or above is employed. |
