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Toshiba TEC B-SX4T Thermal Printhead 305 DPI FMBC0048505
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Factory OEM 305 DPI high-resolution near-edge thermal printhead for legacy Toshiba TEC B-SX4T industrial barcode printers. Produces sharp 2D barcodes, fine graphics, and small text. Genuine factory replacement component.
OEM Replacement Component
Toshiba TEC B-SX4T Series 4-Inch Thermal Printhead (305 DPI)
OEM Part Number: FMBC0048505 | High-Resolution Industrial Near-Edge Direct Thermal & Thermal Transfer Line Head
Product Overview
The Toshiba TEC FMBC0048505 is an authentic original equipment manufacturer (OEM) replacement thermal printhead engineered specifically for high-definition printing on the Toshiba TEC B-SX4T industrial printer platform. Utilizing Toshiba's signature Near-Edge (corner-edge) printhead architecture, this assembly delivers 305 DPI (12.0 dots/mm) high-density resolution across an active 4.09-inch (104.0 mm) continuous print span, designed to maintain micro-dot precision during demanding industrial manufacturing, pharmaceutical serialization, and chemical compliance runs.
Constructed with a beveled ceramic substrate array housing 1,248 microscopic heating elements and coated with a reinforced dielectric protective glaze, the FMBC0048505 allows instantaneous ribbon peel-off following thermal discharge. This near-edge dynamic minimizes ribbon drag, eliminates static accumulation, and operates seamlessly with Toshiba’s mechanical ribbon-saving system. Pre-mounted onto a heavy-duty extruded aluminum heatsink base with precision locating notches, it delivers uniform platen contact and sharp barcode reproduction at production speeds up to 8 inches per second.
Part Information
| Product Name | Toshiba TEC B-SX4T Thermal Printhead |
| OEM Manufacturer | Toshiba TEC Corporation |
| OEM Part Number | FMBC0048505 |
| Component Classification | Original Equipment Manufacturer (OEM) Replacement Thermal Printhead |
| Head Architecture | High-Density Near-Edge (Corner-Edge) Matrix on Industrial Aluminum Heatsink Base |
| Manufacturing Standard | Toshiba TEC Factory Certified (Japan) |
Technical Specifications
| Printing Technology | Near-Edge Thermal Transfer (TT) & Direct Thermal (DT) |
| Native Resolution | 305 DPI (12.0 dots/mm) |
| Dot Pitch | 0.083 mm (approx. 12 dots/mm) |
| Effective Print Width | Up to 104.0 mm (4.09 inches) |
| Total Heating Elements | 1,248 Dots (continuous near-edge linear array) |
| Maximum Rated Speed | Up to 8.0 ips (203.2 mm/sec) — media and ribbon profile dependent |
| Ribbon & Media Matching | Dedicated Near-Edge Wax/Resin & Near-Edge Resin ribbons; synthetic films (PET, PP, PE), coated papers, and direct thermal stocks |
| Electrical Interface | High-speed multi-pin Flexible Flat Cable (FFC) connector terminal |
| Thermal Feedback | Integrated internal precision thermistor for dynamic closed-loop strobe pulse compensation |
Key Features & Operational Advantages
- 305 DPI High-Definition Array: 1,248 individual micro-resistors render sharp vector curves, micro-text, and dense 2D Data Matrix codes without edge stair-stepping or raster bleeding.
- Near-Edge Angle Peeling: Corner-edge element positioning allows instant ribbon separation, eliminating ribbon drag, reducing static charge, and preventing ribbon wrinkling at speeds up to 8 ips.
- Ribbon-Save Mechanism Synchronization: Certified for full mechanical compatibility with Toshiba TEC’s optional ribbon-save hardware, advancing non-printed media without consuming ribbon.
- Drop-In Factory Calibration: Pre-calibrated factory resistance ratings integrate directly with B-SX4T mainboard driver circuits, preventing uneven burn lines and maintaining uniform optical density.
CRITICAL TECHNICAL & OPERATIONAL ADVISORY
1. Mandatory ESD Precautions: Microscopic 305 DPI near-edge resistive arrays and onboard driver shift registers are Class 1 ESD-sensitive components. Technicians must wear a grounded ESD wrist strap and work on a static-dissipative work surface. Never touch the ceramic dot array or signal connector terminals directly.
2. Complete Power Isolation: Always power off the printer and disconnect the main AC power cord prior to servicing the head assembly. Disconnecting or seating cable harnesses while the power supply is energized will cause instantaneous gate blowout in the driver ICs and permanently destroy the head.
3. Head Architecture & Resolution Check: The B-SX4T utilizes a Near-Edge printhead architecture. It is NOT compatible with Flat-Head models (such as B-SA4 or B-EX4T2 series). Furthermore, upgrading or replacing between 203 DPI (FMBC0048405) and 305 DPI requires matching mainboard sensor and motor parameter adjustments.
4. Preventive Cleaning & Ribbon Matching: Always use dedicated Near-Edge formulated thermal transfer ribbons to prevent premature element wear. Clean the beveled printline after every ribbon roll change using a lint-free swab saturated with 99.7% electronic-grade Isopropyl Alcohol (IPA). Allow the array to dry completely before applying power. Never use metallic tools or abrasives on the glazed edge.
Compatible Models & Systems
| System Family | Native Resolution | Supported Models |
|---|---|---|
| Toshiba TEC B-SX4T Series | 305 DPI (12.0 dots/mm) | B-SX4T-TS20-QM-R (Near-Edge) |
| Toshiba TEC B-SX4 High-Res | 305 DPI (12.0 dots/mm) | B-SX4-TS Series (Near-Edge Chassis) |
*Model Differentiation Note: This printhead is dedicated strictly to the Near-Edge 305 DPI B-SX4 / B-SX4T series. It is NOT compatible with standard 203 DPI models (B-SX4T-GS, Part # FMBC0048405 / 7FM01641000), 5-inch models (B-SX5T, Part # 7FM01641100), successor B-EX4T1 models (Part # FMBC0094702), or Flat-Head series. Check the printer model code on the rear serial rating plate prior to unsealing the component.
Terms, Warranty & Customer Protection
Condition: 100% Brand New, Unopened Factory Original Genuine OEM Component in Factory-Sealed Anti-Static Packaging.
Warranty Scope: Protected by standard manufacturer DOA replacement coverage against electrical continuity failures and physical manufacturing defects upon initial arrival. Operational lifespan is governed by media abrasiveness, ribbon formulation, operational darkness settings, and routine maintenance compliance.
Return Policy: Precision industrial electronic consumable. Due to sensitivity to electrostatic discharge and inherent operational wear characteristics, components that have been unsealed from their protective static-shielding bag, mounted, or energized on a printer cannot be returned or restocked under standard commercial terms. Please confirm your printer model and OEM part number with technical support prior to unsealing.
FMBC0048505
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