High performance grand format LED UV inkjet printer

The all new Mimaki UJV55-320 grand format LED UV inkjet printer delivers a unique combination of high quality super wide output for volume production of banners, retail, exhibition and window graphics and other similar applications up to 3.2m wide, with the added versatility of twin-roll simultaneous printing.

High density print
Built-in LED lightbox
Instantly dry ink
  • Super wide format printing (up to 3.2m)
  • High speed printing up to 110m2/h
  • Newly developed LUS-120 high performance UV curing ink including white
  • High density print mode for front/backlit applications
  • Inline LED Lightbox for backlit print inspection
  • MAPS, MFD1, NCU & NRS for optimal print quality & performance
  • Simultaneous twin-roll print facility
  • Media roll weights up to 100kg


Indoor and outdoor signage, Exhibition, Display and window graphics, Front and backlit signage, Retail PoS and much more…

Specifications, options and supplies of UJV55-320


Head On-demand piezo head (4 printheads / in 2 staggered array)
Print resolution 300dpi, 600dpi, 900dpi, and 1200dpi
Ink droplet size Minimum: 7pl Maximum: 36pl
Head gap (Manual adjustment) 1.7mm / 1.9mm / 2.6mm / 3.3mm
(Distance between the platen and the print head)
Ink Type LED-UV ink LUS-120
Colour 4 – Colour (C, M, Y, K) / 7 – Colour (C, M, Y, K, Lc, Lm, W)
Packaging 1 litre ink bottle, Ink can be filled up to 3 litres per ink colour.
Maximum print width 3,200mm
Maximum media width 3,250mm
(Twin rolls printing with a small drive shaft: 1,524mm × 2)
Minimum media width 210mm
Media thickness 1.0mm or less
Roll outer diameter Large drive shafts: Φ250mm or less.
Small drive shaft with roll holders: Φ180mm or less.
Roll weight Large drive shafts: 100kg or less.
Small drive shaft with roll holders: 25kg or less
Dimensions (W × D × H) 5,410mm × 995mm × 1,440mm excl. ink supply unit
5,680mm x 1,220mm x 1,440mm incl. ink supply unit
Shipping dimensions (W × D × H) 5,714mm × 1,136mm × 1,203mm
Weight 910kg
Power supply AC 200 – 240V ± 10% 50/60 Hz ± 1 Hz, 18 A or less.
* 100V Power not available
Power consumption 4.3kW or less
Operational environment Temperature 20 – 30 °C (68 – 86 °F)
Humidity 35 – 65%Rh (No condensing)
Temperature accuracy 20 – 25 °C (68 – 77 °F)
Temperature gradient Less than ± 10 °C/h (± 18 °F/h)
Dust 0.15mg/m3 (Equivalent to normal office level)



Item Colour Item No. Remarks
Cyan LUS12-C-BA-1 1L bottle
Magenta LUS12-M-BA-1
Yellow LUS12-Y-BA-1
Black LUS12-K-BA-1
Light Cyan LUS12-LC-BA-1
Light Magenta LUS12-LM-BA-1
White LUS12-W-BA-1
Flushing Liquid FL007-Z-BA-1-KA

All UJV55-320 inks are GREENGUARD Gold certified.

Features of UJV55-320

Efficient and Versatile Twin-Roll Simultaneous Printing

Taking advantage of the 3,200mm printing width, two media rolls can be mounted for simultaneous printing. Different print jobs (or the same print job) can be printed on two separate rolls. The user can select the preferred width separately for each roll, within a specified range (210 to 1,524mm).

Prevention of print quality problems – NCU

NUC imageThe UJV55-320 is equipped with Mimaki’s original automatic NCU. Clogged nozzles are automatically detected and cleaned by the NCU. If the clogging is not resolved by cleaning, the UJV55-320 automatically sets the nozzle recovery function NRS and resumes printing. These functions significantly reduce the waste printing caused by clogged nozzles during a continuous printing run.


Productivity maintenance – NRS

The NRS substitutes defective nozzles with non-defective nozzles until the technician arrives. This feature enables uninterrupted print operations and continuous productivity.
NRS image

Print quality

Printhead configuration 4-7Improved print head configuration
Head configuration: Four print heads in a staggered array. 1 head: 1,280 nozzles (320 nozzles X 4 lines), Y C M K 4 heads: total 5,120 nozzles.

Beautiful output

without waveform vs. with waveformWaveform Control Technology
Ensures high quality print resolution, by jetting ink drops in straight lines with almost perfect round dots, delivering clear and sharp letters, lines and edges.

Figure A. Without waveform control
Ink droplets jetted in the shape of deformed circles

Figure B. With waveform control
Ink droplets jetted in the shape of nearly perfect circles

Superior inkjet technologyBanding reduction
Delivers high density print by removing the gap between dots. Suitable for High speed mode.

MAPS (Mimaki Advanced Pass System)
Reduces banding by dispersing ink drops between passes.

Print Speed

Print Speed (White Printing)

  • In 1200x1200dpi print mode, max. print width is 2.7m
  • Estimated speed when printed on 3.2m wide media
  • If printed on 1.5m-wide media, print speed is halved

Print Speed (4-Colour)

  • Estimated speed when printed on 3.2m wide media.
  • If printed on 1.5m-wide media, print speed is halved.

Print Speed (7-Colour)

  • In 1200x1200dpi print mode, max. print width is 2.7m.
  • Estimated speed when printed on 3.2m wide media.
  • If printed on 1.5m-wide media, print speed is halved.

Click on the image for details.

Improved performance for backlit printing applications

White ink print enhancements
Printing on transparent media is made possible by the application of white ink as an under or over layer.

Day & Night Printing on Backlit Materials
Image 1: Colour & White & Colour 3 layers
Printing a white layer between coloured layers, ensures a consistent result whether illuminated or not.

Image 2: Colour & Colour 2 layers
If only 2 layers of coloured ink are applied, the resulting image is too dark when viewed in daylight.

Legenda images 1 and 2:
A1: Colour Ink, A2: White Ink, A3: Colour ink 2 layers, B: Transmitted lights, C: Media, D: Lights, E: Light Source
day&night printing_w
White ink circulation technology MCT (Mimaki Circulation Technology)
By periodically circulating white ink in line from tank to head, pigment deposition is prevented. MCT ensures stable production and reduction of ink discharge and waste.

White ink Circulation technology graphic
Inline LED lightbox for backlit print inspection
Proofing while printing LED backlights illuminate printed media just after printing, reproducing a backlit signage application and ensuring immediate quality inspection.

  • No need to stop the printer to check
  • LED lights set in the space after print platen enabling immediate correction if errors occur
  • Saves time, ink and media
  • Colour temperature : 7,000 Kelvin
  • Brightness easily adjustable
  • LED lights can be removed from the printer

High ‘Blockout’ performance for backlit signage
A key feature of UV-curable ink is the thickness of the ink layer on the media, which enables much greater ‘blockout’ performance than other print methods. This is particularly beneficial in backlit signage applications where the ability to block out backlighting in certain areas improves overall illuminated colour performance and vibrancy.

Sophisticated RIP software maximizes the performance of UJV55-320

Rasterlink 6 Software
New image-processing technique reduces tone jumps and uneven colour printing
Mimaki Fine Diffusion 1 (MFD1) has been recently added to the bundled RasterLink6 RIP software. MFD1 reduces the noise that is generated in image data during image processing and enables the production of better print results without tone jumps or uneven colours.

All UJV55-320 inks are GREENGUARD Gold certified.

UJV55-320 Brochure (PDF LowRes)

UJV55-320 Brochure (PDF LowRes)

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