求各位同行指导 EPSON的api使用

文档有不知道怎么使用

function bClickScanAndSave(){
    EScanControl2.LicenseKey    = "EPSON";
    EScanControl2.EParamDeviceInfo.DeviceName    = "DS-530";
    EScanControl2.EParamSave.FilePath     = "c:\\debug";

    EScanControl2.EParamScan.DocSource    = 1;
    EScanControl2.EParamScan.Resolution    = 600;
    EScanControl2.EParamOCR.OcrLanguage    = 16;
    EScanControl2.OpenScanner();

    EScanControl2.Execute(0);
}

运行结果及报错内容 
Uncaught TypeError: EScanControl2.OpenScanner is not a function
    at bClickScanAndSave (EScanControl2_1.htm:22)
    at HTMLInputElement.onclick (EScanControl2_1.htm:10)