OKI C931DP+ 4-Station Envelope Press


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Compatible with the OKI C931DP, C941DP and C942. Broaden your services by expanding short-run offerings (under 5,000 pieces) and offer variable data printing in high definition color. New design simplified job set up, delivering new level of production reliability in cost efficient manner.

• Expand short-run offerings
• Offer variable data printing in high-def color
• Envelopes as small as 2.5” x 4.5” and as large as 13” x 15”
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An economical four color envelope printing solution, the C931DP+ offers vibrant color on a wide range of media, with fast printing speeds and high-quality output. Designed for commercial production of color and B&W envelope printing, and short-run letter and tabloid color digital printing

Press quality: Fast digital turnaround, no setup costs

Requests for short-run envelope production (runs of 5,000 or less) used to be a headache for print shops large and small: not economical for traditional offset printers, too much trouble even for small digital print shops. With the C931DP+ Envelope Print System, a formerly under-serviced market represents an opportunity to expand your business.

  • Cost-effective means to produce short runs
  • Little overhead or job start-up costs
  • Full control over timing

Vibrant color: High-definition, high-quality output

Digital LED technology produces high-definition printing in the sharpest and some of the most vibrant print output available, making the C931DP+ an ideal solution for print shops aiming for world-class four-color output.

  • Experience rich color depth and saturation 
  • Superb print resolution of 1200 x 1200dpi

Print for profit: Extend in-house color printing capabilities

The C931DP+ enables you to extend your in-house color printing capabilities from expected to the extraordinary. It’s a new breed of print device, perfect for short runs and, with a duty cycle rated at up to 300,000 pages per month, rugged enough for longer runs. Add an optional EFI Fiery C9 Server or Harlequin DirectPrint RIP and offer your customers short-run, targeted variable data printing (VDP) with accurate, consistent color.

  • Expand short-run offerings
  • Offer variable data printing in high-definition color
  • Accurate color through standard print driver or optional RIP provides consistent color output
  • Designed with multi-shift commercial print shops in mind: ease of operation, maintenance and adjustment 

Media versatility: Print on envelopes in a variety of sizes and weights

The C931DP+ robust media support enables printing on a wide array of envelope sizes and weights. 

  • Straight-through print path handles envelopes and ultra-heavy card stocks/post cards up to 360 gsm
  • Raised and angled envelope stack ensures smooth separation of typically challenging media
  • Envelopes as small as 2.5” x 4.5” and as large as 13” x 15”



Media Size: 3x5" - 13x52" (envelopes up to 10x13")
Speed: up to 50ppm (4,200 envelopes per hour)
Print Resolution: 1200 x 1200 dpi for clear, sharp text and graphics
Paper Weights: 17lb. bond - 120 lb. cover (52 - 360 gsm)
Variable: Variable data and variable graphics in a single pass
Color Matching: EFI Fiery or Harlequin (Optional)
Hopper Capacity: 4,000 sheets / 500 envelopes
Monthly Duty Cycle: 15,000 - 80,000 average / 300,000 max
Warranty: 1-Year Limited; 5-Years Digital LED Printheads

User Guide
Advanced User Guide
Spot Color Guide
Envelope Printing
Fiery Manual





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