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OKI C651: High-performance A4 colour printing in the tightest spaces

Get workgroup-level performance without sacrificing valuable space. Just 395 mm wide, the OKI C651 combines fast, professional colour printing with flexible media handling and robust construction.

Designed for busy offices, retail counters, warehouses and production environments, it delivers reliable printing where space is limited and productivity matters.

Why choose the OKI C651?

Discover the benefits of professional A4 colour printing, with compact design, reliable performance and flexible media handling for demanding workplaces.
Compact design, minimal space
At just 395 mm wide, the C651 fits into tight workspaces. OKI Space Saving Technology and full front access make daily operation and maintenance easier, with only 2 cm of side clearance required.
Fast, professional colour printing
Print up to 35 A4 pages per minute in colour or mono, with the first page ready in approximately 6.5 seconds. Digital LED technology and 1200 × 1200 dpi resolution deliver sharp text and detailed graphics.
Flexible media handling
Print on compatible paper, card, labels and specialist media from 60 to 256 gsm, depending on the paper source. Handle sizes from B8 to A4, including long-format banners up to 1.32 metres.
Reliable performance, practical maintenance
Designed for demanding printing environments, the C651 combines robust construction with separate toner cartridges and image drums, allowing each consumable to be replaced when needed.

Professional printing that fits your workspace

From busy offices and retail counters to warehouses, production areas and kiosks, the C651 delivers workgroup-level performance in a compact desktop design.

Its 395 mm width and full front access make it easier to position where space is limited, without sacrificing printing speed or media flexibility.

With separate toner cartridges and image drums, routine consumable replacement is straightforward, helping keep the printer ready for everyday business use.

OKI C600 series A4 colour printer with covers open, showing front and top access to the toner, image drums, fuser and belt

Print more than everyday office documents

The C651 goes beyond conventional A4 document printing, offering the flexibility to produce a wide range of professional materials in-house.

From small product labels and business cards to marketing materials and long-format banners, it supports compatible media in different sizes and weights.

Print on paper and card up to 256 gsm using the appropriate paper source, while automatic double-sided printing supports everyday document production.

For businesses that need smaller quantities, frequent updates or different media types, the C651 provides greater control over what they print and when they print it.

Media compatibility depends on the substrate, paper source, print settings and intended application.

OKI C651 A4 colour printer with printed food and beverage labels

Request a quote or product demonstration

Tell us what you need to print, your expected volumes and where the printer will be installed.

Our specialists can advise on the C651, compatible media, optional paper trays and pricing, and discuss a demonstration using your own artwork.

OKI C651 A4 colour printer with four additional paper trays, fitted into an office shelving unit

More flexibility for everyday business printing

Whether you're producing routine documents or specialist materials, the C651 helps businesses manage different printing requirements with one compact device.

Versatile media and paper handling

  • Print on compatible media from 60 to 256 gsm
  • Handle formats from B8 to A4, including long banners
  • Produce labels, cards, business documents and promotional materials
  • Use automatic duplex printing for everyday documents
  • Expand paper capacity to 1,940 sheets with optional trays
  • Keep different paper types loaded for different applications

Easy operation and reliable performance

  • Full front access to consumables and maintenance areas
  • Only 2 cm side clearance required
  • Separate toner cartridges and image drums
  • Robust mechanical design for demanding environments
  • Standard Ethernet and USB connectivity
  • Optional wireless LAN, with support for mobile printing
  • Secure Print and advanced network security features

With flexible media handling and straightforward maintenance, the C651 supports efficient printing in offices, retail environments and operational workplaces.

Product Lifetime Warranty: protection for longer

The OKI C651 is eligible for the Product Lifetime Warranty programme, offering cover for up to seven years or 600,000 pages, whichever comes first.

To qualify, eligible customers must register their printer in the MyOKI portal within 60 days of purchase and register at least one original OKI toner cartridge every year, starting with the year of initial registration.

The programme is available in eligible European markets and is subject to the applicable terms and conditions.

OKI C651 at a glance

Discover the key features of the OKI C651, designed for professional A4 colour printing in space-constrained business environments.

Just 395 mm wide

An ultra-compact design with full front access and minimal side clearance, making it easier to install in smaller workspaces.

Up to 35 pages per minute

Fast A4 colour and mono printing, with professional 1200 × 1200 dpi output.

Media from 60 to 256 gsm

Print on compatible paper, card and specialist substrates, including small-format media and long banners.

Up to 1,940-sheet capacity

Expand paper capacity with optional trays to support higher volumes and keep different media types ready for use.

Printing applications across industries

From retail counters and classrooms to production facilities and warehouses, the C651 supports organisations that need reliable, flexible A4 colour printing.

Retail and customer communications

Produce professional materials including:

  • Shelf-edge labels and price cards
  • Promotional signs and product information
  • Flyers, vouchers and customer handouts
  • Pre-cut labels and stickers
  • Seasonal offers and in-store communications

Update pricing, promotions and customer information in-house, without relying on external printing for every change.

Office and education

Print everyday business and learning materials such as:

  • Employee onboarding and training documents
  • Operational guides and reference materials
  • Classroom resources and learning handouts
  • Certificates, invitations and event programmes
  • Internal communications and staff notices

Combine fast document printing with professional colour output for everyday office and educational requirements.

Logistics and manufacturing

Support operational printing with materials including:

  • Barcode and product identification labels
  • Shipping and dispatch documentation
  • Warehouse shelf and location labels
  • Production instructions and work orders
  • Quality control checklists
  • Inventory and asset identification

Produce clear, up-to-date information close to the point of work, using suitable media for the required application.

Construction and technical workplaces

Create practical materials including:

  • Safety information and workplace notices
  • Equipment identification labels
  • Operational instructions and checklists
  • Technical reference documents
  • Site information and wayfinding signs

Keep essential workplace information current, with professional colour printing and flexible media handling for different applications.

Healthcare and service environments

Produce administrative and customer-facing materials such as:

  • Patient information leaflets
  • Appointment and service information
  • Staff training documents
  • Internal notices and reference guides
  • Departmental and wayfinding signage

Support everyday communication with clear, professional printing, using media appropriate for the environment and any applicable requirements.

Frequently asked questions

What is the OKI C651?

The OKI C651, technically designated C651dn, is an ultra-compact A4 colour printer using digital LED technology. It combines fast printing, flexible media handling and robust construction for offices, retail, logistics, manufacturing and other business environments.

How compact is the OKI C651?

The C651 measures 395 mm wide, 430 mm deep and 290 mm high. OKI Space Saving Technology allows operation and maintenance with only 2 cm of clearance on either side, while full front access makes consumable replacement easier.

How fast is the C651?

The C651 prints up to 35 A4 pages per minute in colour or mono, with a first-page-out time of approximately 6.5 seconds. Actual performance depends on the print job, settings and media.

Can the C651 print on thick card and specialist media?

Yes. The C651 supports compatible paper and specialist media up to 256 gsm through Tray 1 and the multipurpose tray. Optional paper trays and automatic duplex printing have different supported media-weight ranges.

Can the C651 print banners longer than A4?

Yes. Although the C651 is an A4 printer, it supports custom media up to 1,321 mm long, making it suitable for long-format banners and promotional materials using compatible media.

Can I print labels with the OKI C651?

Yes. The C651 can print on compatible pre-cut label sheets and specialist media for applications such as product identification, price labels and operational labelling. Media suitability and any required regulatory compliance must be verified for the intended use.

Does the C651 support wireless printing?

Yes. Wireless LAN is available as an option. The printer also supports mobile printing technologies including Apple AirPrint, Mopria and IPP Everywhere, with the appropriate network configuration.

Is the C651 suitable for demanding workplaces?

Yes. The C651 is designed for busy offices, warehouses, production areas, kiosks and other environments where space is limited but reliable printing is essential. Its robust construction and separate consumables support regular business use.

What warranty is available for the OKI C651?

Eligible C651 printers can qualify for the OKI Product Lifetime Warranty programme, providing cover for up to seven years or 600,000 pages.

Registration in "MyOKI portal" within 60 days of purchase and annual registration of original OKI toner are required. Country eligibility and programme terms apply.

Ready to see how the C651 fits your business?

Whether you need a compact printer for a busy office, reliable printing for operational documents or flexible media handling for labels and promotional materials, OKI can help you assess the C651 for your requirements.

Speak to our team about compatible media, paper tray configurations, pricing and a demonstration using your own artwork.