将Unicode字符打印到POS打印机 [英] Print Unicode Characters to POS printer

问题描述

我正在尝试将我的语言字符打印到POS打印机.打印机可以很好地打印，但是效果很差.这是我尝试过的:

I'm trying to print my language characters to a POS printer. The Printer prints well but the result's so bad. This is what I tried:

using (MemoryStream ms = new MemoryStream())
                using (BinaryWriter bw = new BinaryWriter(ms))
                {
                    bw.Write(AsciiControlChars.Escape);
                    bw.Write('@');

                    //ESCCMD.RenderBitmap(bw, logo);
                    bw.Write("Đây là Tiếng Việt");

                    bw.Write(AsciiControlChars.Escape);
                    bw.Write('d');
                    bw.Write((byte)3);

                    // Feed 3 vertical motion units and cut the paper with a 1 point uncut
                    bw.Write(AsciiControlChars.GroupSeparator);
                    bw.Write(AsciiControlChars.V);
                    bw.Write((byte)66);
                    bw.Write((byte)3);
                    bw.Flush();

                    RawPrinterHelper.SendToSerialPort(ms.ToArray(), txtPortTest.Text, Convert.ToInt32(cbbBaudRate.SelectedValue));
                }

那么如何使用ESC/POS命令打印我的语言字符? 非常感谢！

So how can I print my language characters using ESC/POS command? Thanks so much!

推荐答案

在打印国际字符之前，需要检查您的特定型号是否支持相应的代码页，然后使用ESC t命令进行设置.可在此处获得EPSON打印机支持的代码页列表和命令语法信息:

Before printing international characters you need to check if your specific model supports the corresponding codepage and then set it with the ESC t command. The list of supported code pages for EPSON printers and the command syntax info is available here: https://reference.epson-biz.com/modules/ref_escpos/index.php?content_id=32 (registration required)

例如，要打印希腊(ISO-8859-7)文本，您需要执行以下操作:

For example, in order to print Greek (ISO-8859-7) text, you need to do something like this:

private void PrintGreekIsoText(BinaryWriter bw, string text)
{
    // ESC t 15
    bw.Write("\x1bt\x15");
    // Convert the text to the appropriate encoding
    var isoEncoding = Encoding.GetEncoding(28597);
    var bytes = Encoding.Unicode.GetBytes(text);
    byte[] output = Encoding.Convert(Encoding.Unicode, isoEncoding, bytes);
    bw.Write(output);
}

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