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I am developing a software which require to print receipts.
What is the most common type of receipt printer?
Are there any industry standards for receipt printer API?
Are there any .net library for that? Tried to find but didn't find anything.
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If your printer is displaying as offline, this means your computer is not able to communicate with your printer. 1. Unplug the USB cable from the computer and try to plug it in to a different available USB port.
Still not working? Your thermal printer probably needs a good cleaning. We recommend using Thermal Printer Cleaning Cards with every paper roll change to remove residue and other contaminants from thermal print heads, paper guides and paper paths, helping to prevent paper jams and misprints.
UnifiedPOS is the most common API today for communicating with Point-Of-Sale peripherals including receipt printers: http://www.nrf-arts.org/UnifiedPOS/default.htm.
Microsoft have an implementation for .NET: http://msdn.microsoft.com/en-us/library/ms828083.aspx.
UnifiedPOS evolved from OPOS (OLE for Retail POS), so google for OPOS for more info. You will find more peripheral manufacturers support OPOS than other flavors of UnifiedPOS. Microsoft's POS for .NET will work with OPOS V1.8 Service objects.
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