回退双面打印配置

electron/main.js

@@ -301,9 +301,6 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
     }
 
     const duplexMode = printOptions?.duplex;
-    // pdf-to-printer 使用 side 选项，而不是 duplex
-    // side 可选值: "simplex" | "duplex" | "duplexshort" | "duplexlong"
-    const sideOption = duplexMode ? "duplexlong" : "simplex";
     log.info(
       `准备打印PDF: ${pdfFilePath}, 打印机: ${targetPrinterName || "默认打印机"
       }, 双面打印: ${duplexMode ? "是" : "否"}`
@@ -315,7 +312,6 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
       silent: true, // 静默打印
       duplex: duplexMode || false, // 双面打印选项
     };
-
     await ptp.print(pdfFilePath, printOptions_ptp);
 
     log.info("PDF打印请求已发送成功");