Free UK - Next Business Day Delivery
Rainbow Logo

Free UK Delivery

Orders over £30

Secure Checkout

256-bit SSL

All Items In Stock

Ready to ship

Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA

Canon

Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA

In Stock
£235.00ex. VAT

£282.00 inc. VAT

Klarna.Or 3 payments of £78.33 with Klarna
✔ No interest✔ No fees when paid on time✔ Instant approval

*Klarna's Pay in 3/Pay in 30 days are unregulated credit agreements. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. Ts&Cs and late fees apply.

Order within 07:23:33 for Next Business Day Delivery
1

Product Information & Application Guide

Experience premium printing reliability with the Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA from Rainbow Sales. This unit is meticulously engineered for seamless integration with your Canon hardware. At our Southampton facility, we ensure every item meets the highest standards for yield accuracy and color vibrance, providing an essential solution for professional-grade documentation.

Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) – 6445C001AA

Bring your vibrant commercial graphics and fine-art photography to life at an industrial scale with the Genuine Canon PFI-3700C Cyan Ink Cartridge. Precision-engineered for Canon's newest generation of high-production imagePROGRAF GP-series printers, this massive 700ml OEM (Original Equipment Manufacturer) ink ensures your large-format machine operates flawlessly. It delivers the stunning precision, wide colour gamut, and reliability that the world’s busiest professional print shops demand.

Brilliant Colours with Newly Reformulated LUCIA PRO II Ink Taking print durability and vibrancy to unprecedented heights, the PFI-3700C features Canon’s newly reformulated LUCIA PRO II pigment ink technology. This advanced cyan ink is specifically designed to deliver eye-catching hues and incredibly deep saturation. Crucially, the LUCIA PRO II formulation provides highly enhanced scratch resistance and superior lightfastness, ensuring your brilliant retail posters, high-end proofs, and fine-art masterpieces remain pristine and vibrant for generations.

Maximum Capacity for High-Volume Production Designed for the busiest design studios and continuous production environments, this 700ml maximum-capacity tank offers the best possible value for your business. By significantly reducing the frequency of ink replacements, you save valuable time and drastically lower your overall cost-per-print. Furthermore, it is built around Canon’s intelligent sub-ink tank system, allowing you to safely hot-swap an empty cyan cartridge on the fly while the printer is actively laying down ink. The result? Total workflow continuity and zero ruined prints during critical runs.


Key Features & Benefits:

  • 100% Genuine Canon Product: Ensures peak printhead performance and completely protects your hardware warranty.
  • Maximum Volume: Massive 700ml ink tank provides the lowest cost-per-ml for high-volume users.
  • Next-Generation Formulation: Features LUCIA PRO II ink for outstanding scratch resistance and superior long-term lightfastness.
  • Professional Quality: Delivers brilliant cyan hues and deep saturation for high-impact commercial signage and fine art.
  • Hot-Swap Compatible: Swap out the cartridge mid-print without disrupting your busy production schedule.
  • Part Number: 6445C001AA / PFI-3700C / PFI3700C


Compatible Canon Printers:

  • Canon imagePROGRAF GP-Series: GP-2600, GP-4600, GP-6600


Sustainability & Recycling Commitment

At Rainbow Sales, environmental stewardship is central to our operations. This Canon consumable is eligible for our comprehensive recycling program. We encourage all UK customers to return depleted units to our Southampton hub to minimize electronic waste. Investing in high-yield supplies like Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA not only reduces your carbon footprint by decreasing transport frequency but also ensures fewer resources are consumed through wasted or misprinted documents.

Why Hardware Compatibility Matters?

Utilizing certified Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA components protects your Canon printer from internal damage. Precision fuser units and printheads are sensitive to chemical variances in toner and ink. By using verified supplies from Rainbow Sales, you maintain consistent operating temperatures and prevent nozzle blockages, which are the primary causes of premature hardware failure and expensive service call-outs.

Rainbow Sales: A Trusted Name in UK Printing

Serving customers across the United Kingdom for over a decade, we have developed a deep understanding of complex printing ecosystems. We don't just supply products; we provide peace of mind for every page you print. Our Southampton-based technical support team is always available to assist with installation queries or to help you select the most cost-effective printing solutions for your specific business requirements.

10+
Years Experience
24h
Fast Dispatch
100%
Quality Tested
UK
Based Support

Frequently Bought Together

Genuine Canon PFI-2100PBK Photo Black Ink Cartridge (160ml) | 5266C001AA
All Items In Stock

Canon

⭐⭐⭐⭐⭐ (4.8)

Genuine Canon PFI-2100PBK Photo Black Ink Cartridge (160ml) | 5266C001AA

Produce stunning, high-contrast graphics on glossy media with the Genuine Canon PFI-2100PBK Photo Black Ink Cartridge (5266C001AA). 160ml of LUCIA PRO ink. Shop now!

✓ Compatible: Canon imagePROGRAF GP-2000, Canon imagePROGRAF GP-4000

🚚 Free delivery on orders over £30

£68.40
Genuine Canon PFI-110M Magenta Ink Cartridge (160ml) | 2366C001AA
All Items In Stock

Canon

⭐⭐⭐⭐⭐ (4.8)

Genuine Canon PFI-110M Magenta Ink Cartridge (160ml) | 2366C001AA

Produce brilliant, eye-catching graphics with the Genuine Canon PFI-110M Magenta Ink Cartridge (2366C001AA). Enjoy 160ml of durable pigment ink. Shop now!

✓ Compatible: Canon imagePROGRAF TX-2000, Canon imagePROGRAF TX-2100 +7 more

🚚 Free delivery on orders over £30

£61.95
Genuine Canon PFI-710BK Black Ink Cartridge (700ml) | 2354C001AA
All Items In Stock

Canon

⭐⭐⭐⭐⭐ (4.8)

Genuine Canon PFI-710BK Black Ink Cartridge (700ml) | 2354C001AA

Produce sharp, high-volume graphics and documents with the Genuine Canon PFI-710BK Black Ink Cartridge (2354C001AA). Enjoy 700ml of durable pigment ink. Shop now!

✓ Compatible: Canon imagePROGRAF TX-2000, Canon imagePROGRAF TX-2100 +7 more

🚚 Free delivery on orders over £30

£249.00
Genuine Canon PFI-030C Cyan Ink Cartridge (55ml) | 3490C001AA
All Items In Stock

Canon

⭐⭐⭐⭐⭐ (4.8)

Genuine Canon PFI-030C Cyan Ink Cartridge (55ml) | 3490C001AA

Deliver vibrant colours and sharp technical details with the Genuine Canon PFI-030C Cyan Ink (3490C001AA). 55ml LUCIA TD Pigment. Shop now!

✓ Compatible: Canon ImagePROGRAF TA-20, Canon ImagePROGRAF TA-30 +2 more

🚚 Free delivery on orders over £30

£41.50

Legal Transparency & Trademark Information

All Canon brand names, logos, and trademarks are the property of their respective owners. Any reference to specific printer models or manufacturer part numbers is made solely for the purpose of demonstrating product compatibility. Rainbow Sales Ltd is an independent supplier of high-quality printing consumables across the United Kingdom.

Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA

Genuine Canon PFI-3700C Cyan Ink Cartridge (700ml) | 6445C001AA

£235.00

×1
Rainbow

Your trusted source for printer cartridges and office supplies, since 1995. Quality products at unbeatable prices.

Contact Us

Rainbow Sales Ltd.

Solent Business Centre

343 Millbrook Rd W

Southampton SO15 0HW

United Kingdom

Newsletter

Get exclusive deals and updates delivered to your inbox

© 2026 Rainbow Sales Ltd. All rights reserved.

Accepted Payments:Accepted Payments

Rainbow Sales — All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement or affiliation with the respective trademark owners and Rainbow Sales Ltd.

Website made byUX Web Solutions
Cookie Preferences

We use cookies to enhance your browsing experience, analyse site traffic, and personalise content. You can choose which categories to allow. Learn more