Epson SIDM Black Ribbon Cartridge LQ-350/LQ-300

Razor-Sharp Clarity on Every Multi-Part Carbon Copy

The Epson SIDM Black Ribbon Cartridge (C13S015631 / S015631) is an authentic OEM 24-pin impact printing consumable specifically engineered for precise, high-density text output on Epson LQ-350, LQ-300, LQ-300+, and LQ-300+II dot matrix printers. Formulated with an ultra-fine, high-density black ink compound distributed evenly across a durable woven nylon fabric ribbon, it yields up to 2.5 million sharp characters designed to meet the strict legibility standards of fine-font multi-part invoices, official accounting ledgers, and multipart business forms. The precision-engineered cassette housing maintains exact ribbon tension and smooth tracking to eliminate snagging, while specialized ink lubricants continually coat delicate 24-pin printhead needles to minimize mechanical friction and heat wear during high-volume administrative print cycles.

Key Features

High-Density Letter-Quality Output

Ultra-fine black ink formulation delivers crisp, letter-quality text resolution across 24-pin impact printhead cycles. High-contrast ink density maintains sharp typography across official accounting forms, invoices, and detailed reports.

Precision Multi-Part Copy Impression

Durable fabric weave transfers exact pin forces across multipart carbon sets and continuous forms. Consistent impact transfer ensures clean legibility down to the last sheet without ink blurring or character distortion.

Printhead Needle Protection

Specialized lubricating additives within the liquid ink continuously lubricate fine 24-pin printhead needles during rapid impact operations. Continuous lubrication suppresses thermal degradation and protects internal printhead components against friction.

High-Tension Woven Nylon

Premium continuous-loop nylon ribbon construction withstands repeated mechanical stress without stretching or tearing. Balanced fabric weave keeps ribbon tension stable and eliminates tracking alignment issues inside the printer.

Direct Printer Hardware Compatibility

Precision Cassette housing snaps cleanly into Epson LQ-350, LQ-300, LQ-300+, and LQ-300+II dot matrix printers. Exact physical engineering allows office staff to execute fast, hassle-free cassette swaps without workflow interruptions.