Abstract: A method of adjusting a laser processing apparatus includes controlling an X-axis galvanometer scanner and a Y-axis galvanometer scanner on the basis of X coordinates and Y coordinates recorded in a coordinate recording section to apply a pulsed laser beam to a workpiece, thereby processing the workpiece, actuating an X-axis moving mechanism and a Y-axis moving mechanism on the basis of the X coordinates and the Y coordinates recorded in the coordinate recording section and causing an image capturing unit to capture an image of processed marks on the workpiece, and detecting shifts between X coordinates and Y coordinates of the processed marks whose image has been captured in the processed mark image capturing step and the X coordinates and the Y coordinates recorded in the coordinate recording section, and recording corrective values in a corrective value recording section.

Abstract: An ignition timing control apparatus for an internal combustion engine of a vehicle includes a detector connected to an internal combustion engine for detecting a revolution number of the internal combustion engine and a control unit operatively connected to the detector for controlling an ignition timing period in accordance with the detected revolution number of the internal combustion engine, the control unit being connected to an ignition unit connected to the internal combustion engine.