c# 编写的sato条码打印程序，打印时会跳纸，少出来几个条码

c# 编写的sato条码打印程序，有时在打印时会跳纸，少出来几个条码,有时是连续几个不出来，有时是少出来第一个或中间的几个条码，请帮忙看看这程序有什么问题，或者哪里可以改进避免这类问题发生。 for (int i = 0; i <= printcount - 1; i++)
                                        {                                            string seqNo = GetSeq().ToString("d4");
                                            string reelNo = textBox2.Text + YM + day + seqNo;
                                            textBox7.Text = reelNo;
                                            string ReelNo = receiveDate + seqNo;
                                            string ipAddress = "10.3.14.42";
                                            int hPort = 9100;
                                            String c, stx, etx;
                                            c = ((char)27).ToString();
                                            stx = ((char)2).ToString();
                                            etx = ((char)3).ToString();
                                            System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient();
                                            client.Connect(ipAddress, hPort);
                                            System.IO.StreamWriter writer = new System.IO.StreamWriter(client.GetStream());
                                            StringBuilder SEND = new StringBuilder();
                                            SEND.Append(stx + c + "A");
                                            SEND.Append(c + "H600" + c + "V0005" + c + "L0102" + c + "XM" + textBox2.Text);
                                            SEND.Append(c + "H600" + c + "V0050" + c + "L0102" + c + "XMINT Qty: " + textBox3.Text);
                                            SEND.Append(c + "H600" + c + "V0100" + c + "L0102" + c + "XMBox Qty: " + textBox5.Text);
                                            SEND.Append(c + "H600" + c + "V0155" + c + "L0102" + c + "XMLot: " + textBox1.Text);
                                            SEND.Append(c + "H600" + c + "V0205" + c + "L0102" + c + "XMPrinted: " + DateTime.Now.ToString());
                                            SEND.Append(c + "H600" + c + "V0260" + c + "L0102" + c + "XMSeq: " + seqNo);
                                            SEND.Append(c + "H900" + c + "V0260" + c + "L0102" + c + "XMRecDate: " + receiveDate);
                                            SEND.Append(c + "H600" + c + "V0315" + c + "L0102" + c + "XMExp: " + firstExpire);
                                            SEND.Append(c + "H347" + c + "V0260" + c + "L0203" + c + "XM" + ing);
                                            SEND.Append(c + "H1000" + c + "V0005" + c + "L0203" + c + "XM" + textBox8.Text);
                                            SEND.Append(c + "H1100" + c + "V0100" + c + "L0408" + c + "XM" + MM);
                                            string strqr = "," + textBox2.Text + "," + textBox5.Text + "," + DateTime.Now.ToString() + "," + ReelNo;
                                            SEND.Append(c + "H347" + c + "V0040" + c + "BQ1005,0" + strqr);
                                            SEND.Append(c + "Q1" + c + "Z" + etx);                                            //Open connection;
                                           
                                            writer.Write(SEND);
                                            writer.Flush();
                                            writer.Close();
                                            client.Close();C#sato