Email: info@grisprint.com / crystal@grisprint.com Phone: +8613249595563

Printhead Specifications


Ricoh Gen6 vs Gen5 for Packaging: Is MH5320 Worth the Upgrade?

Still deciding between Ricoh MH5320 (Gen6) and MH5421 (Gen5) for your packaging line? Compare real-world speed, ink compatibility, and ROI—based on official Ricoh specs, not hype.

In packaging printing—where every minute of downtime costs thousands—speed alone isn’t enough. You need stable jetting, broad ink compatibility, and long service life under harsh industrial conditions.

Ricoh’s Gen6 (MH5320) promises a leap over Gen5 (MH5421). But does it deliver real ROI on your corrugated, flexible film, or label line?

This guide uses only data from Ricoh’s official specifications to compare:

  • Real throughput at production speeds
  • Ink flexibility for diverse packaging substrates
  • Total cost of ownership over 2 years

Need the raw specs? → See full Ricoh Gen6 Printhead (MH5320/MH5340): Full Specifications & Global Supply → Compare Ricoh MH5320, MH5340, MH5421 Specs Compared: Differences and Replacement Guide


Speed Benchmark: Gen6 vs Gen5 in Real Production

Forget “max frequency”—look at sustainable jetting performance during 8-hour shifts.

ParameterRicoh MH5421 (Gen5)Ricoh MH5320 (Gen6)
Max Jetting Frequency30 kHz50 kHz
Grayscale Levels4-level (aqueous only)4-level (UV/solvent/aqueous)
Droplet Volume7/14/21 pl5 pl (binary) / 5–15 pl (grayscale)
Native Resolution600 dpi (4-row interlace)600 dpi (4-row, no interlace needed)
Operating TemperatureUp to 50°CUp to 60°C

Why this matters in packaging:

  • At 50 kHz, Gen6 achieves solid coverage in fewer passes—critical for high-speed lines (>70 m/min).
  • Smaller 5 pl base droplet reduces graininess on premium labels or shrink sleeves.
  • Higher temperature tolerance prevents thermal shutdown in hot factory environments.

Your takeaway: Gen6 doesn’t just go faster—it maintains quality at speed, where Gen5 often requires slowdowns to avoid banding.

🔗 Source: [Ricoh MH5320_5340.pdf – “Jetting frequency: 50kHz (3 levels)”]


Ink Flexibility & Substrate Coverage

Packaging demands ink versatility—from water-based on paper to UV on plastic.

CapabilityMH5421 (Gen5)MH5320 (Gen6)
Ink TypesAqueous onlyUV, Solvent, Aqueous
Viscosity Range11 mPa·s10–12 mPa·s
Surface TensionNot specified28–35 mN/m
Service Life (aqueous)Baseline>2× longer than MH5421

Real impact:

  • With Gen5, you’re locked into water-based inks—unsuitable for non-absorbent films or outdoor durability.
  • Gen6 lets you run UV-curable inks for instant cure on PET, PP, or metalized substrates—without changing printheads.

Key insight: If you serve food packaging, cosmetics, or industrial labels, Gen6’s ink flexibility opens new markets Gen5 can’t touch.

🔗 Source: [Ricoh MH5320_5340.pdf – “Compatible ink: UV, Solvent, Aqueous… service life more than double that of MH5421”]


Integration & Reliability in 24/7 Operations

Upgrading isn’t just about the head—it’s about total system fit.

Mechanical & Thermal

  • Size: MH5320 is thinner (66.3 mm depth vs 69 mm) → easier integration in compact modules
  • Cooling: Gen6’s integrated heater + thermistor enables stable operation up to 60°C (vs 50°C for Gen5)

Electrical

  • Both use similar cable interfaces (45C/20C), but waveform profiles differ
  • Gen6 requires driver firmware that supports 50 kHz grayscale—legacy Gen5 controllers won’t suffice

Maintenance

  • Ricoh states: “Printhead replacement is simple” for MH5320
  • Combined with >2× service life, this means fewer changeovers on critical production lines

Upgrade reality:

  • New press? Gen6 is the clear choice.
  • Retrofit Gen5 machine? Only if your electronics support 50 kHz and your ink system handles UV/solvent.

🔗 Source: [MH5421_5441.pdf – “Operating temp: up to 50°C”] | [MH5320_5340.pdf – “Operating temp: 60°C”]


So… Is Gen6 Worth It for Packaging?

Use this decision matrix:

ScenarioRecommendation
Printing aqueous on paper/board at <50 m/minMH5421 still viable (lower upfront cost)
Running UV on film, foil, or shrink sleevesMH5320 required (Gen5 doesn’t support UV)
Line speed >60 m/min with high-quality solidsMH5320 strongly recommended (50 kHz + 5 pl)
Planning a new single-pass pressGo Gen6—it’s future-proof and more durable

Remember: Gen6 isn’t just an incremental upgrade—it’s a platform shift for industrial packaging.


Still unsure whether Ricoh Gen6 is right for your packaging line?

Whether you’re building a new press, upgrading an existing system, or advising a client—we’ll help you choose the right printhead based on real specs, not marketing claims.

Just share:

Your current setup (printer model or ink type)

Target application (flexible packaging, corrugated, labels, etc.)

Key goal: speed, quality, or ink flexibility?

We’ll send a clear recommendation—backed by Ricoh’s official documentation.

Email us: info@grisprint.com Inquire Now >>

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Contact: Vicky Wei

Phone: +8613249595563

Email: info@grisprint.com / crystal@grisprint.com

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