Mimaki UJF-6042 MKII e: What It Is and Who It's Actually

The Mimaki UJF-6042 MKII e is a compact UV LED flatbed printer with a 600 × 420 mm (approximately 23.6" × 16.5") print area, designed for on-demand, short-run direct printing onto rigid and semi-flexible substrates. It prints directly on objects up to 153 mm thick. No heat. No transfer film. No setup waste.

That's the one-line version.

The e designation in MKII e marks a significant hardware revision over the standard MKII specifically the addition of the optional Kebab cylindrical printing attachment, refined UV LED lamp positioning for improved curing consistency on textured surfaces, and expanded ink configuration options including the LUS-170 flexible UV ink series. These aren't cosmetic upgrades.

According to Smithers' The Future of Wide Format Printing to 2027 report, the UV inkjet segment is the fastest-growing wide-format category, with a projected CAGR of over 6% through 2027. Small-format UV flatbeds are the primary driver specifically among promotional product decorators and short-run manufacturers who can't justify the footprint or cost of a full industrial machine but need output quality that photographs clean and holds up to handling.

The UJF-6042 MKII e sits squarely in that window.

The Mimaki UJF-6042 MKII e is a compact UV LED flatbed printer with a 600 × 420 mm print area capable of printing directly onto rigid and semi-flexible substrates up to 153 mm thick. The "e" variant adds optional cylindrical printing via the Kebab attachment and expands ink compatibility to include flexible UV inks for soft goods and curved surfaces.

Full Specs: What the Official Page Lists vs. What Actually Matters

Mimaki's product page gives you the spec table. Here's what that table means in practice.

Print area: 600 × 420 mm. That's enough for an A2 sheet flat or six phone cases simultaneously if you're using a jig. It's not enough for banner material or anything requiring wide-format passes.

Maximum object thickness: 153 mm. This covers most trophies, thick acrylic blocks, and boxed items. It won't accommodate unusually tall objects without a workaround.

Print heads: Ricoh Gen5 piezo inkjet heads are the same class of heads used across most of Mimaki's professional UV lineup. Reliable. Field-tested. Replacement parts are not exotic.

Resolution: Up to 1,200 dpi. In practice, most operators run 600–900 dpi for production jobs and reserve 1,200 dpi for photographic reproductions or extremely fine detail work on dark substrates. Running full 1,200 dpi on every job will slow throughput noticeably.

Ink system: The MKII e supports multiple ink configurations. The LUS-170 ink series is the key one for shops printing on flexible or curved materials it's specifically formulated for flex resistance after curing, which matters for silicone phone cases, soft-touch coated surfaces, and anything that flexes in use. The LUS-200 series offers stronger adhesion on hard, non-porous surfaces like metal, glass, and acrylic. You choose your configuration at purchase; switching ink types later involves a flush cycle and some downtime.

UV LED lamp: Dual UV LED lamps, air-cooled, rated for approximately 10,000 hours. No mercury. No warm-up time. Substrates that are heat-sensitive thin polystyrene, foam board, or certain coated papers are safe.

Ink channels: Standard configuration runs CMYK + White + Clear (varnish). White ink is what makes printing on dark or transparent substrates viable. The clear channel lets you add texture, gloss, or matte spot effects in the same pass.

Footprint: 1,400 × 1,200 mm (approximately 55" × 47"). This fits in most shop environments without dedicated floor space restructuring.

Weight: Approximately 270 kg. Plan your delivery logistics. It needs a reinforced floor or at minimum a concrete slab not going on a second floor with a standard wooden subfloor without engineering sign-off.

Quick note: Mimaki lists noise at under 60 dB in standby. Under active printing with the UV lamps running, real-world noise is closer to 65–68 dB depending on the ventilation setup. Wear your hearing protection if you're running it in a small enclosed shop all day.

Real-World Throughput: Numbers the Spec Sheet Skips

This is where most product pages fail you entirely.

Mimaki's official documentation doesn't publish prints-per-hour figures for common job types. That's not unusual for UV flatbeds throughput varies too much by substrate, ink configuration, resolution mode, and operator workflow to publish a single honest number. But it leaves buyers guessing.

Here's what operators across print forums, dealer demos, and published case studies consistently report for the UJF-6042 MKII e:

Phone cases (standard 6" smartphone case, CMYK + White underbase, 600 dpi, 6-up jig): Approximately 35–45 cases per hour in production mode. Drop to 25–30 if you're adding a gloss clear coat pass.

Pens via Kebab attachment (cylindrical, CMYK, 600 dpi): 20–30 pens per hour depending on pen diameter and artwork wrap. The Kebab slows overall cycle time because of the rotation mechanism, but it opens a product category most flatbeds can't touch without a separate rotary device.

Rigid substrates acrylic blocks, tiles, wood panels (A4 size, CMYK, 600 dpi): 8–14 pieces per hour in production mode. High-quality mode (900–1,200 dpi) cuts this roughly in half.

Packaging and folded cartons (flat, CMYK, 720 dpi): 15–25 pieces per hour depending on piece size.

These are not Mimaki's numbers. They're patterns from operator-reported data treat them as realistic planning ranges, not guarantees. Your specific substrate, ink adhesion primer requirements, and artwork complexity will shift the figures.

I've seen conflicting data on white ink opacity in single-pass vs. double-pass configurations some operators report full opacity in single pass on dark substrates, others say double-pass white is non-negotiable below a certain opacity threshold. UV flatbed jig setup guide, My read is this: for photographic-quality output on black substrates, budget for a double-pass white underbase in your cycle time estimates.

Ink Costs and Total Cost of Ownership

Nobody wants to discover the real cost of running a UV flatbed six months after the machine is installed.

Ink pricing: Mimaki LUS-170 and LUS-200 inks are sold in 600 ml cartridges, typically ranging from $85–$120 per cartridge depending on color and channel through authorized distributors. White ink consumption runs higher than CMYK except roughly 2× the consumption rate of cyan or magenta on comparable coverage jobs because white is almost always layered.

Ink cost per print (estimated, phone case, CMYK + White, 6" case, full bleed): Experienced operators report approximately $0.08–$0.18 per case in ink at typical coverage rates. This varies significantly with artwork, heavy white coverage on a dark case costs more than a CMYK-only design on a clear case.

Maintenance consumables: The UV LED lamps are rated ~10,000 hours. At 8 operating hours per day, that's roughly 3–4 years before lamp replacement. Replacement lamp units for the MKII e run approximately $800–$1,200 per lamp through Mimaki service channels. Factor two lamps.

RIP software: The machine ships with Mimaki RasterLink7, which handles color management, white ink layering, spot color mapping, and print queue management. It's a capable RIP not the most intuitive interface for operators coming from inkjet or screen printing backgrounds, but well-documented and with active support from Mimaki's dealer network. No additional RIP license cost at purchase.

Service contracts: Mimaki offers annual service contracts through their dealer network. Pricing varies by region, but ballpark $2,500–$4,500 per year for a full parts-and-labor contract. Running without a contract is a reasonable choice for experienced shops with in-house maintenance capability, but UV flatbed print head replacement without a contract can run $3,000–$6,000+ depending on damage scope.

Total cost of ownership estimate (3 years, moderate production 500 prints/week):

Cost Category	Estimated 3-Year Total
Machine purchase (MSRP range)	$75,000–$90,000
Ink (LUS-170/200, all channels)	$18,000–$30,000
Maintenance / service contract	$7,500–$13,500
Consumables (media, primers, cleaning)	$3,000–$5,000
UV lamp replacement (Year 3)	$1,600–$2,400
Total 3-Year TCO	~$105,000–$141,000

These numbers assume you're running at moderate production volume. High-volume shops (1,500+ prints/week) will see ink costs scale significantly. At low production (under 200 prints/week), the fixed costs dominate and your cost-per-print climbs fast.

Mimaki UJF-6042 MKII e vs. Roland LEF2-300: Direct Comparison

The Roland LEF2-300 is the most direct competitor in the compact UV flatbed category. Same general footprint class. Same target buyer. Different engineering philosophy.

Mimaki UJF-6042 MKII e vs. Roland LEF2-300: The Mimaki is better suited for shops prioritizing ink flexibility, cylindrical printing via the Kebab attachment, and multi-layer white/clear ink configurations, because its ink system offers more channel options and substrate versatility. The Roland LEF2-300 works better when operator ease-of-use and faster onboarding are the priority, its interface is more approachable for operators new to UV flatbed printing. The key difference is ink system depth vs. operational simplicity.

Quick Comparison

Feature	Mimaki UJF-6042 MKII e	Roland LEF2-300
Print Area	600 × 420 mm	762 × 330 mm
Max Object Height	153 mm	100 mm
Cylindrical Printing	Yes (Kebab attachment, optional)	Limited (rotary jig only)
Ink Channels	Up to 6 (CMYK + W + Cl or Pr)	CMYK + W + Gloss
Flexible Ink Option	Yes (LUS-170)	Limited
RIP Software	RasterLink7 (included)	VersaWorks 6 (included)
Approx. MSRP	$75,000–$90,000	$65,000–$80,000
Learning Curve	Moderate	Lower

Some experts argue the Roland LEF2-300's slightly wider print area (762 mm vs. 600 mm) makes it the better choice for shops doing larger rigid substrates. That's valid for shops primarily printing on 12×24" plaques or large tiles. But if you're decorating promotional items pens, bottles, phone cases, golf balls, the Mimaki's Kebab attachment and flexible ink capability make it the more versatile production tool. The wider Roland bed doesn't help you when your job is a 12" pen.

Here's the thing: if your shop is primarily doing flat, rigid, non-cylindrical substrates and your operators have no previous UV flatbed experience. Roland LEF2-300 full review, Roland's easier learning curve is a real operational advantage. The Mimaki is a more capable machine. It also asks more of your operators.

What the Learning Curve Actually Looks Like

Most guides skip this. The machine's capability doesn't matter if your operators can't run it consistently.

The UJF-6042 MKII e is not plug-and-play.

Week 1–2: Expect to spend significant time in RasterLink7 learning the color profile system, white ink layering workflow, and how to set up jigs correctly. Mimaki provides training through their dealer network. The software's color management is powerful but non-obvious if you're coming from a wide-format solvent or dye-sub background.

Substrate preparation: UV ink adhesion is chemistry. Not every substrate prints clean without a primer. Operators new to UV flatbeds consistently underestimate how much substrate testing is required glass, anodized aluminum, and certain plastics may need a primer coat before printing. Primer adds a step, adds cost, and adds time to your workflow. Factor it in.

To set up a new substrate for the Mimaki UJF-6042 MKII e, follow these steps:

1. Run a test print on the substrate without primer to assess ink adhesion.

2. If adhesion fails the tape pull test, apply Mimaki's recommended UV primer and allow it to dry.

3. Create a custom ICC color profile in RasterLink7 for the substrate and ink combination.

4. Run a production test at your target resolution and check curing consistency under UV light.

5. Document the approved substrate profile for repeatable production runs.

   
   

White ink maintenance: White ink settles and can clog if the machine sits idle. Operators who run the machine daily report minimal white ink maintenance issues. Shops running the machine 2–3 days per week consistently report needing to run more frequent white ink purge cycles. If your production schedule is light, build the purge cycles into your weekly workflow it's not optional.

Or maybe I should say it this way: the UJF-6042 MKII e rewards consistent, daily use. It's not ideal as a machine you fire up twice a week for occasional specialty jobs. If that's your use case, the total cost of maintenance and downtime risk goes up significantly.

What most guides skip is the ventilation requirement. The UJF-6042 MKII e uses UV-cured inks that are off-gas during printing. Mimaki recommends adequate ventilation in the operating environment. Mimaki official UJF-6042 MKII e installation requirements documentation, In a small enclosed shop, this means an exhaust fan or proper HVAC not just an open window. Check your local regulations on UV ink ventilation requirements before installation.

Is the Mimaki UJF-6042 MKII e Right for Your Shop?

Look, if you're running 300+ custom promotional items per week, need cylindrical printing capability, and want a machine with genuine ink system flexibility for diverse substrate types, the UJF-6042 MKII e is a strong choice. The Kebab attachment alone opens product categories that most competing compact UV flatbeds can't access without separate equipment.

If you're printing under 150 units per week, primarily on flat rigid substrates, and your operators have no UV flatbed experience, the total cost of ownership and the learning curve both work against you at this price point. The machine doesn't become more cost-effective at low volume, it becomes harder to justify.

The counter-intuitive truth most reviews miss: the MKII e's biggest advantage isn't print quality, it's substrate range. At 600 dpi production mode, the output quality is comparable to the Roland LEF2-300 and other competitors in this price range. UV flatbed ROI calculator guide, What separates the MKII e is the combination of 153 mm object height clearance, the Kebab cylindrical option, and the LUS-170 flexible ink together, they let one machine cover product categories that would otherwise require two separate devices.

That versatility has a real dollar value for shops building a promotional decoration business. It's worth calculating against the purchase price before you decide. Smithers The Future of Wide Format Printing to 2027. This guide is accurate to publicly available specifications and operator-reported data as of June 2025. Pricing figures are approximate and subject to change. Contact an authorized Mimaki dealer for current pricing, lead times, and regional service availability.

FAQs

Q: What's the best use case for the Mimaki UJF-6042 MKII e?

A: Promotional product decoration, custom phone cases, branded merchandise, and short-run packaging on rigid or semi-flexible substrates. It excels when you need high-quality direct printing on objects up to 153 mm thick, including cylinders via the optional Kebab attachment.

Q: How much does the Mimaki UJF-6042 MKII e cost?

A: MSRP typically ranges from $75,000 to $90,000 USD depending on ink configuration and optional attachments like the Kebab cylindrical device. Dealer pricing and financing options vary by region and contact an authorized Mimaki dealer for a firm quote.

Q: Should I choose the Mimaki UJF-6042 MKII e or the Roland LEF2-300?

A: Choose the Mimaki if you need cylindrical printing, flexible ink capability, or deeper ink channel options. Choose the Roland LEF2-300 if operator ease-of-use is a priority or your substrate range is primarily flat rigid materials under 100 mm thick.

Q: Why does white ink in UV flatbed printers need special maintenance?

A: White UV ink contains titanium dioxide particles that settle during idle periods, leading to clogged print heads. Regular purge cycles and daily operation prevent buildup. Shops running the machine infrequently face higher white ink maintenance demands.

Q: When should I use LUS-170 ink instead of LUS-200 in the UJF-6042 MKII e?

A: Use LUS-170 when printing on flexible or semi-flexible substrates silicone phone cases, soft-touch surfaces, or anything that bends in use. LUS-200 is the better choice for hard, non-porous surfaces like glass, metal, and rigid acrylic where maximum adhesion matters more than flex resistance.