The **F17350BD-R** is a specific technical code for an Epson printhead assembly, commonly used in wide-format and industrial inkjet printers. It is the core electronic and mechanical component responsible for the precise delivery of ink onto a substrate. --- ### 1. Key Technical Specifications Below are the primary electronic and physical characteristics of this part: | Feature | Specification | | :--- | :--- | | **Technology** | PrecisionCore MicroTFP (Thin Film Piezoelectric) | | **Nozzle Count** | 400 nozzles per row (multiple rows) | | **Native Resolution** | 300 npi / 600 npi per row | | **Droplet Size** | Variable Droplet Technology (Multi-size dots) | | **Max Frequency** | Up to 50 kHz | | **Ink Compatibility** | Aqueous (Water-based) and Dye Sublimation | --- ### 2. Electronic Components & Functionality The "R" in the part number often signifies a specific revision or a "Refurbished/Replacement" designation in certain supply chains, but the electronics remain consistent: #### A. Piezoelectric Actuators The heart of the F17350BD-R is the **PZT (Lead Zirconate Titanate)** crystal. - When an electrical pulse is applied, the crystal deforms physically. - This mechanical movement creates a pressure wave in the ink chamber, forcing a droplet out of the nozzle. #### B. Integrated Circuit (IC) Drivers The printhead contains onboard driver chips that interpret serial data from the main printer logic board. These ICs: - Convert low-voltage data signals into high-voltage driving pulses. - Control the timing of individual nozzle firing to ensure image alignment. #### C. Flexible Flat Cable (FFC) Interface The electronic connection is made via high-density gold-plated contacts. These pins carry: - **Vpp/Vhold:** High voltage for the piezo firing. - **Logic Voltage:** Power for the internal ICs. - **Clock & Data:** Serial signals defining which nozzles fire. - **Temperature Sensing:** Thermistors that monitor heat to prevent damage and adjust ink viscosity calculations. --- ### 3. Usage and Compatibility This part is predominantly found in the **Epson SureColor** series, specifically designed for high-speed production environments. * **Primary Models:** Epson SC-T Series (Technical) and SC-F Series (Sublimation). * **Maintenance:** Because it is an electronic precision part, it is highly sensitive to **electrostatic discharge (ESD)** and air bubbles in the ink line. --- ### 4. Code Block: Sample Signal Logic (Conceptual) In a simplified view, the data sent to the F17350BD-R electronics follows this logic: ```c // Conceptual representation of nozzle firing logic void fire_nozzle(int nozzle_id, int droplet_size) { if (droplet_size == LARGE) { apply_voltage(V_MAX, PULSE_LONG); } else if (droplet_size == SMALL) { apply_voltage(V_MIN, PULSE_SHORT); } // Synchronize with Encoder Strip for X-axis position } ```