diff --git a/src/main/java/com/goeing/printserver/main/utils/PdfPrinter.java b/src/main/java/com/goeing/printserver/main/utils/PdfPrinter.java
index 015aeda..71980c6 100644
--- a/src/main/java/com/goeing/printserver/main/utils/PdfPrinter.java
+++ b/src/main/java/com/goeing/printserver/main/utils/PdfPrinter.java
@@ -254,8 +254,8 @@ public class PdfPrinter {
         PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
         
         // 设置纸张大小
-        String size = option.getSize() != null ? option.getSize() : "Letter";
-        aset.add(PAPER_SIZES.getOrDefault(size, MediaSizeName.NA_LETTER));
+//        String size = option.getSize() != null ? option.getSize() : "Letter";
+//        aset.add(PAPER_SIZES.getOrDefault(size, MediaSizeName.NA_LETTER));
         
         // 设置颜色模式
         setColorMode(aset, option.getColor());
@@ -280,7 +280,7 @@ public class PdfPrinter {
      * @return PDF页面方向
      */
     private static Orientation getPdfOrientation(String orientationStr) {
-        if (orientationStr != null && "ORI_LANDSCAPE".equalsIgnoreCase(orientationStr)) {
+        if ("ORI_LANDSCAPE".equalsIgnoreCase(orientationStr)) {
             return Orientation.LANDSCAPE;
         }
         return Orientation.PORTRAIT; // 默认为纵向
@@ -293,7 +293,14 @@ public class PdfPrinter {
      * @param color 颜色模式字符串
      */
     private static void setColorMode(PrintRequestAttributeSet aset, String color) {
-        if (color != null && ("Full Color".equalsIgnoreCase(color) || "Cover Letter Color Only".equalsIgnoreCase(color))) {
+        if (color == null) {
+            aset.add(Chromaticity.MONOCHROME);
+            return;
+        }
+
+        String c = color.trim().toLowerCase();
+
+        if (c.equals("color") || c.equals("full color") || c.equals("cover letter color only")) {
             aset.add(Chromaticity.COLOR);
         } else {
             aset.add(Chromaticity.MONOCHROME);