Epson 70ml Cyan T6642 Ink Bottle

Cyan is the colour that creates clarity. Clean blue skies in landscape photographs, professional blue in corporate graphics, and crisp cyan in technical diagrams — all depend on cyan ink saturation and accuracy. The Epson T6642 Cyan Ink Bottle (also known as 664 Cyan) delivers exactly this: 70 millilitres of premium dye-based cyan ink yielding up to 6,500 pages of vibrant, fade-resistant colour output from a single bottle. This is Epson’s replacement ink bottle for the EcoTank L-series printer ecosystem — a system designed around the principle that high-volume colour printing should be affordable and sustainable, not constrained by cartridge costs and frequent replacements. The T6642 cyan combines the vibrant dye-based colour formulation that makes Epson inkjet output distinctive with the high page yield that makes EcoTank printing economical for any office or home printing need.

Why the Epson T6642 Cyan Is Essential For Vibrant EcoTank Colour Printing

The EcoTank system fundamentally reimagines what affordable colour printing means. Rather than disposable cartridges yielding 300-500 pages at high cost, EcoTank replaces them with refillable bottles yielding thousands of pages at minimal expense. The T6642 cyan is the critical component that makes this system work for professional colour output.

Cyan is the cool colour in colour printing. Where magenta creates warm reds and pinks, and yellow creates warm golds and greens, cyan creates the cool blues, cyans, and when combined with magenta, the purples that communicate professionalism and technological capability. Without vibrant cyan, colour documents lack the cool tones necessary for complete colour accuracy. The T6642 delivers this capability — vibrant, fade-resistant dye-based cyan that maintains colour saturation across thousands of pages.

This is not bulk ink or third-party replacement; this is genuine Epson ink formulated specifically for Epson’s Micro Piezo printheads, ensuring compatibility, quality, and reliability across the entire Epson L-series ecosystem.

Vibrant Dye-Based Cyan For Clear, Professional Colour

The T6642 uses premium dye-based cyan ink, engineered to deliver the brightness and saturation required for professional colour output. Dye-based inks dissolve fully into the liquid carrier, enabling smooth colour gradation — the subtle transitions between tones that separate amateur printing from professional results.

This dye-based formulation excels in applications requiring colour accuracy: landscape and nature photography where sky cyan and water tones are essential, technical diagrams where colour precision matters, corporate materials where brand cyan colours must be reproduced accurately, and any printing where colour clarity is non-negotiable. The vibrant cyan ensures greens (cyan plus yellow) are rich and lively, and purples (cyan plus magenta) are deep and saturated.

Ultra-High Page Yield — 6,500 Pages From A Single Bottle

Six thousand five hundred pages from 70 millilitres of ink is the defining advantage of the EcoTank system. For an office printing 5,000 pages monthly (moderate office use), the cyan bottle lasts more than one month. For home offices printing 1,000 pages monthly, the bottle lasts nearly six months. This high yield means:

• Fewer interruptions for bottle replacements
• Dramatically lower cost per page (fractions of a cent for colour)
• Simplified ink inventory and supply chain management
• Environmental sustainability through fewer packaging and waste cycles
• Cost-effective colour printing that encourages routine colour use rather than rationing

The high yield is achieved through engineering: the T6642 bottle contains concentrated ink that yields thousands of pages through the precision of Epson’s Micro Piezo printing technology, which deposits tiny drops of ink with extreme precision, minimizing waste.

Wide Printer Compatibility — Extensive Epson L-Series And ET-Series Support

The T6642 cyan is compatible with a comprehensive range of Epson EcoTank printers, spanning the L-series (entry-level through professional) and Expression ET-series models. Compatibility includes: L100, L110, L120, L130, L200, L210, L220, L300, L310, L350, L355, L360, L361, L365, L380, L382, L385, L386, L405, L455, L475, L485, L486, L550, L555, L565, L575, L605, L655, L1300, L1455, plus Expression ET-2500, ET-2550, ET-3600, ET-4500, ET-4550, ET-14000, and additional models.

This wide compatibility means purchasing the T6642 is a safe investment that works across multiple Epson printers, reducing the risk of purchasing ink incompatible with your current device.

Genuine Epson Quality — Micro Piezo Precision And Fade Resistance

This is genuine Epson ink formulated specifically for Epson’s Micro Piezo printheads. Epson’s Micro Piezo technology automatically senses nozzle conditions and adjusts ink delivery to maintain consistent print quality across thousands of pages. Using genuine Epson ink ensures this technology operates optimally.

The dye-based cyan formula is engineered for fade resistance — printed cyan remains vibrant for years without the discoloration or fading that cheaper inks exhibit. For printing materials intended for archival or long-term display, genuine Epson ink ensures colour longevity.

Mess-Free Bottle Design — Easy, Spill-Resistant Refilling

Refilling colour ink should be intuitive and mess-free. The T6642 features Epson’s re-engineered bottle design with a spill-resistant nozzle that pours cleanly into the printer’s cyan tank without dripping onto hands, desk, or printer exterior. The bottle is designed to pour smoothly without gurgling or air gaps that cause spills in poorly-designed bottles.

Refilling takes minutes and requires no special tools or technical knowledge. The nozzle is colour-coded cyan, preventing accidental mis-filling into the wrong colour tank. For offices refilling ink regularly, this ease-of-use is invaluable.

Environmental Responsibility — Sustainability Through High Yield

The EcoTank system, and specifically the T6642, is engineered for environmental responsibility. By delivering 6,500 pages per bottle instead of 300 pages per cartridge, the system dramatically reduces plastic waste entering landfills. Over a year, an office printing 5,000 pages monthly would use 60+ traditional cartridges or just one T6642 bottle — reducing waste by 98 percent.

The concentrated ink means fewer shipments, lower transportation emissions, and simplified supply chain management. For environmentally-conscious organisations, the EcoTank system delivers measurable sustainability benefits.

Part Of The EcoTank System — Complementary To Black, Magenta, Yellow

The T6642 cyan is one colour in Epson’s complete EcoTank colour system. Used in combination with black (T6641), magenta (T6643), and yellow (T6644), the four inks enable your EcoTank printer to reproduce the full visible spectrum at extraordinary economy. Cyan combined with magenta creates purples and blues. Cyan combined with yellow creates vibrant greens. All three colour inks combined with black create any colour imaginable.

Purchasing cyan alone enables black-and-white plus single-colour printing; purchasing the complete set enables full-colour printing at a cost per page that traditional cartridge systems cannot approach.

Perfect For

The Epson T6642 Cyan Ink Bottle is essential for:

• EcoTank printer owners: Replace depleted cyan tanks to maintain full-colour capability
• High-volume colour printers: Offices printing 3,000+ pages monthly seeking economical colour
• Photography and graphics: Professional colour output for portfolios and marketing materials
• Corporate and business users: Brand-accurate colour printing and professional presentations
• Educational institutions: Colour printing for educational materials, diagrams, and presentations
• Marketing and creative teams: In-house colour output for mockups and collateral
• Real estate professionals: Colour property listings and marketing materials
• Graphic designers: Professional-quality colour prints for client presentations
• Environmental organisations: Sustainable printing with minimal cartridge waste
• Cost-conscious colour printers: Achieve professional colour at 90% lower cost than cartridge systems
• Anyone upgrading from cartridges to EcoTank: Complete the colour system with genuine Epson ink

Standout Features at a Glance

• Genuine Epson T6642 Cyan Ink Bottle
• Alternative designation: 664 Cyan
• Part number: C13T66424A
• Capacity: 70ml
• Colour: Cyan (cool blue-green hue)
• Ink Type: Premium dye-based
• Page Yield: Up to 6,500 pages (composite colour at 5% coverage, ISO/IEC 24712 standard)
• Minimum Text Page Yield: Up to 2,000 pages (A4 minimum text)
• Minimum Image Page Yield: Up to 1,000 pages (A4 minimum image)
• Compatible Printers: Extensive Epson EcoTank L-series and Expression ET-series support
• Colour-Coded Design: Cyan nozzle prevents mis-filling
• Spill-Resistant Nozzle: Mess-free, easy refilling
• Micro Piezo Compatible: Works seamlessly with Epson’s precision printhead technology
• Fade-Resistant: Colours remain vibrant for years
• Part of Complete System: Works with black (T6641), magenta (T6643), yellow (T6644)
• Genuine Epson Quality: Engineered for optimal performance with Epson printers
• Environmental Friendly: 6,500 pages per bottle reduces cartridge waste by 98%
• Cost Per Page: Fractions of a cent for colour printing
• Storage: Proper sealing ensures long shelf life

The Cyan That Brings Cool Clarity And Professional Colour To EcoTank Printing

The Epson T6642 Cyan Ink Bottle represents the triumph of the EcoTank philosophy: professional-quality colour printing at a cost so low that colour becomes routine rather than a luxury. Without vibrant cyan, colour documents lack cool tones and professional depth. With the T6642, cyan is abundant, affordable, and of genuinely Epson quality.

Recommended Action: If you own an Epson EcoTank L-series or Expression ET-series printer and require vibrant cyan for colour printing, invest in the Epson T6642 cyan ink bottle and complete your colour system with the matching magenta, yellow, and black bottles for full-spectrum, economical colour printing.

Stop rationing colour printing because cartridges are expensive, stop accepting washed-out cyan from budget third-party inks, stop choosing between colour quality and printing budget — choose the Epson T6642 Cyan and gain 6,500 pages of genuine, fade-resistant, vibrant colour from a single 70ml bottle that redefines what affordable, professional colour printing truly means.