Patent ID: 7982933

Claim:
A drive control method for a galvano-scanner, the method comprising: housing a position-controlling microcomputer in a scanner driver of the galvano-scanner, wherein the position-controlling microcomputer operates so that: position detection signals that are outputted from a position sensor of the galvano-scanner are sampled; a current position address for expressing a current position of the galvano-scanner on the basis of sampling results is updated; when digital movement distance command data for designating a movement distance of the galvano-scanner are inputted from an exterior, the digital movement distance command data are converted to an address change amount for the galvano-scanner; the address change amount is added to the current position address to obtain a movement destination address; and the movement destination address is converted to an analog position command and is supplied to a drive circuit of the scanner driver, and wherein the drive circuit operates so that: a position command voltage that corresponds to the analog position command is generated, and the galvano-scanner is moved in an amount commensurate with the movement distance.