OKI C651dn A4 Colour LED Printer
The OKI C651dn is the world’s smallest high-performance A4 colour LED printer, delivering exceptional workgroup capability in an ultra-compact desktop design. Perfect for businesses where space is limited but printing demands are high, the C651dn combines 35ppm speed, versatile media handling up to 256gsm, and professional-quality LED colour output.
Built with OKI’s Space Saving Technology and robust metal construction, this compact colour printer handles everything from everyday business documents to specialist applications including waterproof labels, long banners up to 1.32m, and marketing materials – all with the reliability and efficiency expected from enterprise-grade equipment.
- World’s smallest high-performance A4 colour printer – minimal footprint with full front access
- Fast 35ppm print speeds in both colour and mono with 6.5 second first-page-out time
- Exceptional media versatility – handles 60-256gsm media, B8 to 1.32m long prints
- Separate toner and drum system for maximum consumable efficiency and predictable costs
- Enhanced security – WPA3 Personal (AES) wireless security and secure printing features
- Adobe PostScript 3 compatibility with PCL and PDF direct print support
- Long-life design with increased metal construction and high-capacity consumables
Need expert advice on selecting the right OKI printer for your business? Email sales@rgbuk.com or call for personalised recommendations and competitive pricing on the C651dn.
OKI C651dn: The World's Smallest High-Performance A4 Colour LED Printer
The OKI C651dn redefines what's possible in compact colour printing. As the world's smallest high-performance A4 colour LED printer, it delivers the speed, media handling capabilities, and cost-efficiency traditionally associated with workgroup devices - all within a space-saving desktop design that fits where larger printers simply won't.
This isn't a compromise solution. The C651dn combines OKI's advanced LED technology with robust metal construction, separate toner and drum consumables, and exceptional media versatility to support diverse printing needs from retail signage and hospitality menus to education materials and healthcare documentation. Whether you're producing waterproof labels, 1.32m banners, or everyday business documents, the C651dn handles it all with professional-quality output and remarkable reliability.
Key Benefits of the OKI C651dn Compact Colour Printer
- Ultra-Compact Design Without Compromise: The C651dn is engineered with OKI's Space Saving Technology to be the smallest printer in its performance class. Its minimal footprint makes it ideal for reception areas, retail counters, busy offices, and any environment where floor space is at a premium - yet it delivers full workgroup capabilities including 35ppm speed and professional media handling.
- Full Front Access for Easy Maintenance: Unlike competitors requiring side or rear clearance, the C651dn features complete front-panel access for all consumables, paper loading, and maintenance tasks. This means you can position it against walls or in tight spaces without compromising serviceability - reducing the actual footprint required even further.
- Robust Metal Construction for Long-Term Reliability: Built to last with increased metal content throughout the chassis, the C651dn offers exceptional durability and stability. This robust construction contributes to consistent print quality, reduced vibration during operation, and extended service life - making it a sound long-term investment rather than a disposable desktop device.
- Fast 35ppm Printing in Colour and Mono: Time-sensitive documents and high-volume printing requirements are no problem. The C651dn delivers consistent 35 pages per minute in both colour and monochrome modes, with a rapid 6.5 second first-page-out time ensuring minimal wait for that urgent single-page print.
- Exceptional Media Versatility: Handle specialist substrates with confidence. The C651dn supports media weights from lightweight 60gsm papers through to heavyweight 256gsm card stocks, with sizes from compact B8 sheets through to impressive banners up to 1.32 metres long. This versatility eliminates the need for multiple printing devices.
- Separate Toner and Drum System: Maximise consumable value with OKI's independent toner and image drum design. Replace only what's depleted - not both components together - ensuring you extract maximum value from every consumable and enjoy more predictable running costs compared to all-in-one cartridge systems.
Technical Specifications & Features
| Specification | Details |
|---|---|
| Print Technology | OKI LED with High Definition colour technology |
| Print Speed | Up to 35ppm (A4 colour and mono), 6.5 second FPOT |
| Print Resolution | 1200 x 1200 dpi |
| Media Support | 60-256gsm, sizes B8 to 1.32m long, including specialist substrates |
| Paper Capacity | Standard: 350 sheets (expandable with optional trays) |
| Connectivity | USB 2.0, Gigabit Ethernet, optional wireless (WPA3 Personal AES) |
| Duplexing | Automatic duplex printing (both sides) as standard |
| Print Languages | Adobe PostScript 3, PCL 5c/6, PDF direct print, XPS |
| Dimensions (W×D×H) | 395 x 430 x 290mm (world's smallest in performance class) |
| Weight | Approximately 25kg |
Specialist Media Capabilities & Applications
The C651dn's media versatility sets it apart from conventional office printers. OKI's advanced LED technology enables reliable printing on specialist substrates that would challenge or damage laser-based alternatives:
- Waterproof and Freeze-Proof Media: Perfect for outdoor signage, menu boards, and labels that face moisture exposure
- UV and Oil-Resistant Materials: Ideal for industrial labels, automotive applications, and harsh environments
- Long Banner Printing: Create banners and posters up to 1.32 metres in length for retail displays and events
- High-Quality 2D and 3D Barcodes: Sharp, scannable codes for inventory, logistics, and product labelling
- Card Stocks and Rigid Media: Business cards, membership cards, and heavyweight marketing materials up to 256gsm
Industry Applications for the OKI C651dn
Retail Environments
Retail demands fast response to pricing changes, promotional campaigns, and seasonal displays. The C651dn enables retailers to produce point-of-sale signage, shelf labels, promotional materials, and price tags on demand - eliminating delays and waste associated with external printing. Its compact footprint suits busy retail back offices and counter areas.
Hotels, Restaurants & Cafés (HoReCa)
Hospitality businesses rely on high-quality printed materials to create memorable guest experiences. The C651dn handles waterproof menus, window signage, promotional banners up to 1.3m, event materials, vouchers, and table toppers - all printed in-house as needed. Its compact design and quiet operation make it suitable for front-of-house locations.
Education Institutions
From teaching materials and certificates to event signage and student ID applications, educational institutions benefit from the C651dn's versatility. Secure printing features protect sensitive student data, while the robust construction withstands high-volume usage in busy school offices and university departments.
Healthcare Settings
Healthcare environments require reliable, secure, and versatile printing. The C651dn supports wristband printing, prescription labels, patient information materials, and everyday clinical documentation. Enhanced security features including secure print release help protect confidential patient data, whilst the compact design fits into space-constrained clinical areas.
Environmental Credentials & Efficiency
Environmental responsibility drives modern printing choices. The OKI C651dn delivers measurable sustainability benefits through thoughtful design:
- Lowest Plastic Content: Uses the lowest proportion of plastic of any OKI colour printer, with increased metal construction throughout
- Reduced Packaging Footprint: Compact device size and optimised toner design reduce packaging materials and shipping impacts
- Long Service Life: Durable metal construction and high-capacity consumables extend product life and reduce waste
- Energy Efficient: Meets latest energy efficiency standards including ENERGY STAR requirements
- Separate Consumables: Replace only depleted components, maximising material efficiency and reducing waste
Why Choose RGB UK for Your C651dn Purchase?
As an authorised OKI dealer, RGB provides comprehensive support for your C651dn investment:
- Genuine OKI Products: Factory-fresh printers with full manufacturer warranty coverage
- Expert Technical Guidance: Specialist advice on printer selection, configuration, and deployment
- Competitive Pricing: Volume discounts and competitive rates on printers and consumables
- Fast UK Delivery: Prompt dispatch with tracking on all printer orders
- Ongoing Consumables Supply: Reliable access to genuine OKI toners and maintenance items
- After-Sales Support: Technical assistance and troubleshooting when you need it
Need expert advice on whether the C651dn is right for your business? Our team can assess your printing requirements and recommend the optimal OKI solution. Contact sales@rgbuk.com for personalised recommendations, competitive pricing, and volume discounts.
Specifications
Complete OKI C651dn Technical Specifications
| PRINTING PERFORMANCE | |
| Print Technology | OKI LED technology with High Definition colour |
| Print Speed (A4) | Up to 35ppm colour and mono |
| First Page Out Time | 6.5 seconds (colour and mono) |
| Print Resolution | 1200 x 1200 dpi |
| Duty Cycle | High-volume capable (contact for specific duty cycle) |
| MEDIA HANDLING | |
| Media Weights | 60-256gsm |
| Media Sizes | B8 to A4, plus banners up to 1.32m long |
| Standard Paper Capacity | 350 sheets (250-sheet main tray + 100-sheet multi-purpose tray) |
| Optional Paper Capacity | Additional 530-sheet trays available (expandable configuration) |
| Duplex Printing | Automatic duplex (both sides) as standard |
| Specialist Media | Waterproof, freeze-proof, UV-resistant, oil-resistant substrates supported |
| CONNECTIVITY & INTERFACES | |
| Standard Connectivity | USB 2.0, Gigabit Ethernet (10/100/1000 Base-T) |
| Optional Connectivity | Wireless 802.11b/g/n with WPA3 Personal (AES) security |
| Print Languages | Adobe PostScript 3, PCL 5c/6, PDF direct print, XPS |
| Operating Systems | Windows, macOS, Linux support (check compatibility) |
| CONSUMABLES & RUNNING COSTS | |
| Toner Cartridge System | Separate toner cartridges (C/M/Y/K) and image drums |
| Standard Toner Yield | Contact for specific yield data per cartridge colour |
| Image Drum Life | Long-life drums (separate from toner for maximum efficiency) |
| User Replaceable Items | All consumables are user replaceable (no engineer required) |
| PHYSICAL SPECIFICATIONS | |
| Dimensions (W×D×H) | 395 x 430 x 290mm |
| Weight | Approximately 25kg |
| Construction | Robust metal chassis with increased metal content |
| Access | Full front access for all maintenance and consumables |
| ENVIRONMENTAL & COMPLIANCE | |
| Energy Efficiency | ENERGY STAR certified |
| Noise Level | Low noise operation suitable for office environments |
| Environmental Design | Lowest plastic content of any OKI colour printer |
Note: Specifications subject to change. Contact sales@rgbuk.com for the latest detailed specifications and compatibility information.
Media & Applications
Supported Media Types & Specialist Applications
The OKI C651dn’s advanced LED printing technology enables exceptional media versatility, handling specialist substrates that challenge conventional laser printers. This versatility makes the C651dn ideal for businesses requiring diverse printing applications from a single compact device.
Standard Media Support
- Plain Paper: 60-105gsm for everyday document printing
- Letterhead & Preprinted Forms: Consistent registration and colour accuracy
- Envelopes: DL, C4, C5 envelope printing without manual feed issues
- Labels: A4 sheet labels for addressing, product labels, and barcodes
- Recycled Paper: Environmentally friendly paper stocks fully supported
Specialist Media Capabilities
- Heavyweight Card (up to 256gsm): Business cards, membership cards, postcards, invitations, presentation folders
- Waterproof Media: Outdoor menus, signage, labels for moisture-exposed applications
- Freeze-Proof Substrates: Cold storage labels, outdoor winter signage, refrigerated environment applications
- UV-Resistant Materials: Long-lasting outdoor signage, window displays, vehicle graphics
- Oil-Resistant Media: Industrial labels, automotive parts labelling, kitchen/food service applications
- Synthetic Papers: Tear-resistant maps, durable ID cards, long-life signage
- Banner Media (up to 1.32m): Retail displays, event banners, promotional signage, window graphics
Application Examples by Industry
Retail:
- Point-of-sale signage and shelf labels
- Promotional posters and window displays
- Price tickets and special offer cards
- Loyalty cards and gift vouchers
- Long banners for window displays and seasonal promotions
Hospitality (Hotels, Restaurants, Cafés):
- Waterproof menus and table toppers
- Event signage and promotional banners
- Guest information materials
- Vouchers and promotional cards
- Window displays and outdoor signage
Education:
- Teaching materials and worksheets
- Certificates and awards
- Event posters and banners
- Student ID applications (with compatible software)
- Prospectuses and marketing materials
Healthcare:
- Patient wristbands (with suitable media)
- Prescription labels
- Patient information leaflets
- Clinical documentation
- Department signage and wayfinding
Manufacturing & Logistics:
- 2D and 3D barcode labels for inventory tracking
- Product identification labels (UV and oil-resistant)
- Shipping labels and documentation
- Safety signage and compliance notices
- Work order documentation
Barcode Printing Capabilities
The C651dn delivers sharp, scannable barcode output essential for inventory management, logistics, and product identification. OKI’s precise LED technology ensures consistent line quality and accurate spacing for reliable scanning:
- 1D barcodes: EAN, UPC, Code 39, Code 128, ITF, and more
- 2D barcodes: QR codes, Data Matrix, PDF417
- High-resolution output ensures first-time scan reliability
- Print on various substrates including synthetic and waterproof materials
Need advice on media compatibility for your specific application? Contact our technical team at sales@rgbuk.com for expert guidance on substrate selection and testing.
What's Included
OKI C651dn Package Contents
Your OKI C651dn printer arrives complete with everything needed for immediate deployment. All items are factory-fresh and backed by OKI’s manufacturer warranty.
Standard Package Includes:
- OKI C651dn Printer: Factory-configured and tested, ready to deploy
- Starter Toner Cartridges: CMYK starter toners included (yields may vary from full-capacity cartridges)
- Image Drums: Long-life image drums (separate from toners)
- Power Cable: UK power lead supplied as standard
- Quick Start Guide: Installation and setup documentation
- Driver & Software CD: Installation media (latest drivers also available via download)
- USB Cable: May be included (confirm with supplier)
- Warranty Documentation: Full details of OKI manufacturer warranty coverage
What You’ll Need:
- Network Connection: Ethernet cable for network installation (not supplied), or configure wireless if optional wireless module fitted
- Computer/Network: Windows, macOS, or Linux system for driver installation and configuration
- Print Media: A4 paper or specialist substrates as required for your applications
Recommended Optional Accessories:
- Additional Paper Trays: 530-sheet feeder units for high-volume environments
- Wireless Module: 802.11b/g/n Wi-Fi adapter with WPA3 security
- Caster Base: Mobile floor stand with lockable wheels and additional paper capacity
- Replacement Toner Cartridges: Keep spares on hand to avoid downtime
- Specialist Media: Waterproof, synthetic, or banner media for specialist applications
RGB uk can provide competitive pricing on all genuine OKI consumables and accessories. Stock full-capacity replacement toners, image drums, and specialist media to ensure uninterrupted printing capability.
Need to order consumables or accessories? Contact sales@rgbuk.com for availability and competitive pricing on all genuine OKI products.
Delivery & Warranty
Delivery Information & Warranty Coverage
UK Delivery Service
RGB uk provides fast, reliable delivery across the United Kingdom for all OKI printers and consumables:
- Fast Dispatch: Orders processed promptly for quick delivery
- Secure Packaging: Professional packaging protects your printer during transit
- Tracking Service: Track your order from dispatch to delivery
- Mainland UK Coverage: Standard delivery to all mainland UK addresses
- Courier Service: Delivered by professional courier services
For specific delivery timescales, Scottish Highlands/Islands delivery, or urgent requirements, contact sales@rgbuk.com before ordering.
OKI Manufacturer Warranty
Your OKI C651dn is covered by OKI’s comprehensive manufacturer warranty, providing protection and peace of mind for your investment:
- Manufacturer Warranty Coverage: Comprehensive protection against manufacturing defects and hardware failures
- On-Site Service: Engineer visits for covered repairs (subject to warranty terms)
- Genuine OKI Parts: All repairs use authentic OKI components
- UK Support Network: Access to OKI’s established UK support infrastructure
- Technical Support: Expert assistance from OKI-trained technicians
Note: Warranty coverage applies to printers purchased through authorised OKI dealers like RGB uk. Warranty terms, duration, and conditions are set by OKI and may vary – contact us for current warranty details specific to the C651dn.
Extended Warranty & Service Contracts
Extend your protection beyond the standard manufacturer warranty with optional service contracts:
- Extended Warranty Options: Additional years of coverage available
- Service & Maintenance Contracts: Planned maintenance and priority support
- Consumables Packages: Predictable costs with inclusive toner supply agreements
- Priority Response: Faster engineer response times for business-critical installations
Contact our team to discuss extended warranty options and service contracts tailored to your business requirements: sales@rgbuk.com
Returns Policy
RGB uk operates a fair returns policy for faulty or unsuitable products. Contact us within a reasonable timeframe if you experience any issues with your printer or need to discuss returns for any reason. Our team will work with you to resolve the situation promptly and professionally.
For delivery enquiries, warranty questions, or service contract information, email sales@rgbuk.com or call during business hours.
FAQs
OKI C651dn Frequently Asked Questions
Common questions about the OKI C651dn compact A4 colour LED printer:
What makes the C651dn the world’s smallest high-performance colour printer?
The C651dn achieves the smallest footprint in its performance class (measuring just 395x430x290mm) thanks to OKI’s Space Saving Technology. Despite its compact size, it maintains full workgroup capabilities including 35ppm print speeds, 256gsm media support, and professional LED colour quality. Most printers offering similar performance are significantly larger, requiring more desk or floor space.
Can the C651dn print waterproof labels and specialist media?
Yes. The C651dn excels at printing on specialist substrates including waterproof, freeze-proof, UV-resistant, and oil-resistant media. OKI’s LED technology enables reliable printing on synthetic materials and heavyweight stocks (up to 256gsm) that would challenge conventional laser printers. This makes it ideal for outdoor signage, industrial labels, and durable applications.
What’s the difference between LED and laser printing technology?
LED printing uses a stationary array of thousands of tiny LEDs to expose the imaging drum, whereas laser printers use a moving laser beam and mirror system. LED technology offers several advantages: fewer moving parts mean greater reliability, more uniform light distribution produces consistent image quality across the page, and the compact LED array enables smaller printer designs. LED printers like the C651dn also handle specialist media more reliably than many laser alternatives.
How long do OKI toner cartridges and drums last?
The C651dn uses OKI’s separate toner and drum system, which is more economical than all-in-one cartridges. Toner cartridge yields vary by colour and capacity (standard vs high-yield options available), whilst image drums have significantly longer service lives. Because toners and drums are separate, you replace only what’s depleted – maximising the value from each component. Contact us for specific yield data for your printing patterns.
Can I print banners and long documents on the C651dn?
Yes. The C651dn supports banner printing up to 1.32 metres (1,320mm) long, making it perfect for retail displays, event signage, promotional materials, and window graphics. This long-document capability is unusual in such a compact printer and eliminates the need for external print services for many banner applications.
Is the C651dn suitable for high-volume printing environments?
The C651dn is designed for demanding workgroup use with robust metal construction, high-capacity consumables, and a substantial duty cycle. Its separate toner and drum system ensures maximum consumable efficiency in high-volume scenarios. For very high volumes or multi-user departmental requirements, consider adding optional paper trays to increase capacity, or contact us to discuss whether a larger OKI model might better suit your needs.
Does the C651dn support wireless printing?
Wireless connectivity is available as an optional upgrade via an 802.11b/g/n wireless module. Standard connectivity includes USB 2.0 and Gigabit Ethernet. The optional wireless module supports modern WPA3 Personal (AES) security protocols for safe wireless printing. Contact us to discuss adding wireless capability if required.
What’s included with the C651dn printer?
Your C651dn includes the printer, starter toner cartridges (CMYK), image drums, power cable, driver/software installation media, and documentation. Network cables and additional accessories are available separately. See the “What’s Included” tab for complete package details.
How does the C651dn’s environmental impact compare to other printers?
The C651dn uses the lowest proportion of plastic of any OKI colour printer, with increased metal construction for durability and longevity. Its compact design requires less packaging and reduces shipping impacts. The separate toner and drum system minimises waste by allowing replacement of only depleted components. ENERGY STAR certification confirms its energy efficiency credentials.
Can I connect the C651dn to Mac and Linux systems?
Yes. The C651dn supports Windows, macOS, and Linux operating systems. OKI provides drivers for multiple platforms, and the printer’s PostScript 3 compatibility ensures broad software support. Check OKI’s website or contact our technical team to confirm compatibility with your specific OS version before purchasing.
Have a question not answered here? Our knowledgeable team is ready to help. Email sales@rgbuk.com with your questions about the OKI C651dn or any other OKI printing solution.
