OKI Pro9431: A3+ colour printer for graphic arts and office printing
Produce vibrant, professional-quality prints in-house with the OKI Pro9431, an A3+ colour printer combining digital LED technology with high-resolution CMYK printing.
Designed for graphic arts professionals, print service providers and business environments, it delivers sharp text, detailed graphics and consistent colour on a wide range of paper and specialist media. From everyday office documents to creative print applications, the Pro9431 offers the flexibility to do more with one printer.
Why choose the OKI Pro9431?
Discover professional colour printing, versatile media handling and reliable performance for graphic arts, commercial print and everyday business requirements.Professional printing for creative and business environments
From design studios and copy shops to marketing departments and in-house print rooms, the Pro9431 brings professional colour printing within easy reach.
Print detailed artwork, presentations, brochures and promotional materials on compatible paper, card, glossy stock and selected specialist media.
Its combination of high-resolution CMYK printing and flexible media handling makes it suitable for both creative applications and everyday business documents.
With the ability to print on heavier media and larger formats, businesses can produce more materials in-house while reducing their reliance on external print providers for suitable jobs.

Request a quote or product demonstration
Tell us what you want to print, your expected volumes and preferred media. Our specialists can advise on the Pro9431, compatible substrates and pricing, and discuss a demonstration using your own artwork.
Customer spotlight: NEŞVE Roastery
750 coffee pouches printed in-house every month
NEŞVE Roastery in Kayseri, Türkiye, uses the OKI Pro9431 to print directly onto coffee pouches, producing around 750 branded packages each month.
By bringing packaging printing in-house, the business gains greater control over production, faster turnaround and the flexibility to maintain a premium look across its coffee range.
Greater flexibility for short-run and everyday printing
Whether you're producing a handful of creative proofs or regular business documents, the Pro9431 helps manage different print requirements with one device.
Professional graphic arts and commercial printing
- Produce short-run brochures, flyers and marketing materials
- Print creative proofs, samples and mock-ups in-house
- Handle personalised stationery and promotional materials
- Use compatible specialist media for different applications
- Keep smaller print jobs separate from high-volume production equipment
Reliable office productivity
Support everyday business needs with professional in-house colour printing:
- Employee onboarding and training materials
- Workshop handouts and meeting materials
- Internal communications and staff notices
- Operational guides and reference documents
- Essential administrative forms and documents
- Handle a range of paper sizes and media through flexible paper trays
By combining professional colour output with everyday office functionality, the Pro9431 can reduce the need for separate devices for creative and administrative printing.
Pro9431 at a glance
Discover the key features of the OKI Pro9431, designed for professional graphic arts and business printing.
1200 × 1200 dpi resolution
Media up to 360 gsm
Up to 50 pages per minute
A3+ printing flexibility
Printing applications across industries
From everyday office printing to creative commercial applications, the Pro9431 supports businesses that need professional colour quality and flexible media handling.
Graphic arts and commercial printing
Create professional materials including:
- Brochures, flyers and leaflets
- Art prints and creative proofs
- Business cards and personalised stationery
- Marketing materials and presentation folders
- Short-run promotional print jobs
Produce detailed artwork and vibrant colours on compatible paper, card and specialist media, with the flexibility to handle different formats and quantities.
Office and business printing
Produce everyday business materials such as:
- Reports and business proposals
- Presentations and training documents
- Internal communications and newsletters
- Sales and marketing collateral
- Administrative documents and correspondence
Combine reliable office productivity with professional print quality, using one A3+ colour printer for both routine and more demanding requirements.
Retail, signage and personalised print
Explore applications including:
- Point-of-sale materials and retail signage
- Menus and promotional displays
- Greeting cards and invitations
- Price tags and clothing swing tags
- Horticultural tags and product information cards
Print short runs and updated designs on suitable media, helping businesses respond to changing promotional and communication needs.
Frequently asked questions
The OKI Pro9431 is a professional A3+ colour printer using digital LED and four-colour CMYK toner technology. It is designed for graphic arts, commercial print and everyday office applications, offering high-resolution printing and flexible media handling.
Yes. The Pro9431 combines professional colour quality with practical office functionality. It can produce creative proofs, marketing materials and specialist print jobs alongside routine office documents, reports and presentations.
Yes. The Pro9431 supports compatible paper, card and specialist substrates up to 360 gsm through the multipurpose tray for single-sided printing. Automatic duplex printing supports media up to 320 gsm.
The Pro9431 prints up to 50 A4 pages per minute in colour or mono and up to 28 A3 pages per minute, depending on print settings and media.
Yes. The printer supports selected waterproof papers and specialist media. The durability of the finished print depends on the material and conditions of use. Media compatibility should be checked before production.
No. The Pro9431 uses four-colour CMYK toner. For applications requiring an additional white toner station, the OKI Pro9542 offers CMYK + White printing on compatible media.
Ready to bring professional colour printing in-house?
Whether you're producing graphic arts materials, managing everyday office printing or exploring specialist print applications, OKI can help you assess the Pro9431 for your business.
Speak to our team about compatible media, pricing and a product demonstration using your own artwork.

