The **T225G-R10-KB** refers to a specific series of industrial-grade thermal printer mechanisms, commonly manufactured by **Brightek** or used in kiosk systems. These components are designed for high-reliability printing in self-service terminals. --- ### 1. Key Technical Specifications The "R10" and "KB" suffixes typically denote specific hardware revisions regarding the interface and paper-cutting mechanism. | Feature | Specification | | :--- | :--- | | **Print Method** | Direct Thermal Line Printing | | **Resolution** | 8 dots/mm (203 DPI) | | **Paper Width** | 58mm / 60mm | | **Print Speed** | Up to 150mm/s (depending on power supply) | | **Interface Options** | RS232 (Serial) / USB / TTL | | **Voltage Supply** | 12V - 24V DC | | **Cutter Type** | Automatic Guillotine (Full or Partial cut) | --- ### 2. Main Electronic Modules The device consists of three primary electronic sub-assemblies: #### A. Thermal Print Head (TPH) * **Function:** Converts electrical energy into heat to create images on thermochromic paper. * **Electronics:** Contains a driver IC that manages the heating elements. It uses a strobe signal to control the heating time, ensuring print density is consistent. #### B. Control Board (Logic PCB) * **Microcontroller:** Processes incoming data (ESC/POS commands) and converts them into motor steps and TPH strobe signals. * **Memory:** Includes Flash memory for storing resident fonts, logos, and buffers. * **Sensors:** * *Paper End Sensor:* Photo-interrupter to detect when paper is out. * *Platen Open Sensor:* Detects if the print head is engaged. * *Temperature Sensor (Thermistor):* Prevents the print head from overheating. #### C. Motor Drive System * **Stepper Motor:** Precisely controls the paper feed. * **Cutter Motor:** A separate DC motor or solenoid that drives the blade to cut the paper after the print job is completed. --- ### 3. Connector Pinout (General Layout) Most T225G models utilize a standard 2.0mm or 2.54mm pitch header for connectivity. ```text Pin 1: VH (Power for TPH - 24V) Pin 2: VH (Power for TPH - 24V) Pin 3: GND Pin 4: GND Pin 5: VDD (Logic Power - 5V) Pin 6: TXD / D+ (Data) Pin 7: RXD / D- (Data) Pin 8: RTS / NC ``` --- ### 4. Common Applications * **Kiosks:** Banking ATMs and queuing machines. * **Retail:** Coupon and receipt dispensers. * **Medical:** Diagnostic equipment report printing. * **Gaming:** Lottery and betting terminals. ---