private void pd_PrintPage(object sender, PrintPageEventArgs e)
        {
            e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            //下面這個也設成高質量
            e.Graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            //下面這個設成High
            e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            e.Graphics.DrawImage(image,
               e.Graphics.VisibleClipBounds);
            e.HasMorePages = false;
        }

　　關鍵在於

e.Graphics.VisibleClipBounds 設置打印可見區域 即整個圖片

printDocument設置適應邊框打印 特重要 找了半天 設置一個屬性即可