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POPrint raw data to a thermal-printer using .NET
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copied!<p>I'm trying to print out raw ascii data to a thermal printer. I do this by using this code example: <a href="http://support.microsoft.com/kb/322091" rel="noreferrer">http://support.microsoft.com/kb/322091</a> but my printer prints always only one character and this not until I press the form feed button. If I print something with notepad the printer will do a form feed automatically but without printing any text.</p> <p>The printer is connected via usb over a lpt2usb adapter and Windows 7 uses the "Generic -> Generic / Text Only" driver.</p> <p>Anyone knows what is going wrong? How is it possible to print some words and do some form feeds? Are there some control characters I have to send? And if yes: How do I send them?</p> <p><strong>Edit 14.04.2010 21:51</strong></p> <p>My code (C#) looks like this:</p> <pre><code>PrinterSettings s = new PrinterSettings(); s.PrinterName = "Generic / Text Only"; RawPrinterHelper.SendStringToPrinter(s.PrinterName, "Test"); </code></pre> <p>This code will return a "T" after I pressed the form feed button (This litte black button here: swissmania.ch/images/935-151.jpg - sorry, not enough reputation for two hyperlinks)</p> <p><strong>Edit 15.04.2010 16:56</strong></p> <p>I'm using now the code form here: c-sharpcorner.com/UploadFile/johnodonell/PrintingDirectlytothePrinter11222005001207AM/PrintingDirectlytothePrinter.aspx</p> <p>I modified it a bit that I can use the following code:</p> <pre><code>byte[] toSend; // 10 = line feed // 13 carriage return/form feed toSend = new byte[1] { 13 }; PrintDirect.WritePrinter(lhPrinter, toSend, toSend.Length, ref pcWritten); </code></pre> <p>Running this code has the same effekt like pressing the form feed button, it works fine!</p> <p>But code like this still does not work:</p> <pre><code>byte[] toSend; // 10 = line feed // 13 carriage return/form feed toSend = new byte[2] { 66, 67 }; PrintDirect.WritePrinter(lhPrinter, toSend, toSend.Length, ref pcWritten); </code></pre> <p>This will print out just a "B" but I expect "BC" <strong>and</strong> after running any code I have to reconnect the USB cable to make it work agian. Any ideas?</p>

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