To send data to the printer, we will use a 5V TTL serial connection. This is not the same as the 10V RS232 serial from a computer’s 9-pin serial port — don’t connect the printer directly to a standard PC port or you may damage it. Print rich text box contents on Thermal Printer in C# windows application You have to read the protocol document first (for thermal printers its generally ESCPOS. Thermal Printer TSP200 Series. 2-3 Serial I/F No. 6 Pin Reset Signal Enabled Disabled. Data Protocol 4-5-1. ![]() The Zebra QL320-RF printer is a mobile, direct thermal label printer. The QL320-RF model is designed to be used with Zebra’s proprietary SRRF protocol. The RF Model does NOT support WiFi or bluetooth. We only recommend this model if you are replacing your existing Zebra QL320-RF SRRF protocol printer and already have an existing RF SRRF protocol infrastructure in place. The Zebra QL320-RF SRRF is built with cutting-edge technology rubber, allowing it to be extremely rugged and durable, while also being very light, making it perfect for mobile thermal bar code and label printing. The Zebra QL320 mobile printer has center loading labels, an intuitive smart battery system and gives you reliable, on-the-go thermal printing. These printers are used and approved by all major shipping companies and postage softwares, including:,,,,, and. Each order includes: 1 Hour of Phone Support and LogMeIn Rescue Installation Support. Tips for better search results • Ensure correct spelling and spacing - Examples: 'paper jam' • Use product model name: - Examples: laserjet pro p1102, DeskJet 2130 • For HP products a product number. - Examples: LG534UA • For Samsung Print products, enter the M/C or Model Code found on the product label. - Examples: “SL-M2020W/XAA” • Include keywords along with product name. Examples: 'LaserJet Pro P1102 paper jam', 'EliteBook 840 G3 bios update' Need help finding your product name or product number? This product detection tool installs software on your Microsoft Windows device that allows HP to detect and gather data about your HP and Compaq products to provide quick access to support information and solutions. Technical data is gathered for the products supported by this tool and is used to identify products, provide relevant solutions and automatically update this tool, to improve our products, solutions, services, and your experience as our customer. Note: This tool applies to Microsoft Windows PC's only. This tool will detect HP PCs and HP printers. This product detection tool installs software on your Microsoft Windows device that allows HP to detect and gather data about your HP and Compaq products to provide quick access to support information and solutions. Technical data is gathered for the products supported by this tool and is used to identify products, provide relevant solutions and automatically update this tool, to improve our products, solutions, services, and your experience as our customer. Note: This tool applies to Microsoft Windows PC's only. This tool will detect HP PCs and HP printers. You have to read the protocol document first (for thermal printers its generally ESCPOS). It will tell you how to obtain access/write to the thermal printer's ROM. Once you put anything in the printers ROM, it should be able to print it. You have to interface the printer to a Windows PC using either COM (RS232), USB, LAN or wireless (Wifi or Bluetooth). Once you can see the printer in the device list in your PC's control panel, follow the steps below: 1. Create a new windows application. Add serial port control to the form (even if you use any of the above interfaces, they are emulated as a COM port). READ THE PRINTER PROTOCOL DOCUMENT 4. Send start of data command to printer. Binarize your data (write your content on an image object and binarize the image using one of the algorithms e.g. Floyd Steinberg). You may have to scale this image based on the capabilities of your printer. Send it to the serial port (probably followed by end of data command and print command. Refer your printer protocol). Printer mapping (letter U): **0*0*** **0*0*** **0*0*** **000*** Consider total printing area of your printer as a blank canvas. And think of your content as a picture made up of black and white dots. You have to tell the printer where the head should put a dot or heat the paper. You provide this information in your binary data.
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