Mimaki introduces 3.2 m Grand-Format LED-UV Curing Inkjet Printer SIJ-320UV


3.2 m Grand-Format LED-UV Curing Inkjet Printer

Dynamic & Intelligent Production

Nagano, Japan (March 5, 2015)

Mimaki Engineering Co., Ltd., a global industry leader and manufacturer of wide-format inkjet printers and cutting plotters, announced today that it will launch the LED-UV curing inkjet printer SIJ-320UV in China, Taiwan, Russia, Korea, Southeast Asia, Eastern Europe, the Middle East, Latin America and Africa in April 2015. The SIJ-320UV is a 3.2 m wide grand-format inkjet printer offering high-quality printing and multiple functions for supporting continuous printing operation.

Mimaki’s reliable unique inkjet technology allows the new SIJ-320UV to deliver beautiful printing, while supporting increased productivity demands. The SIJ-320UV’s technology ensures high quality throughout the printing process. The patented dithering technology MFD1 processes image data without losing original image quality. The highly improved quality-control MAPS4 reduces banding and uneven color printing. In addition, waveform control ensures ink droplet landing accuracy. Furthermore, the SIJ-320UV offers solutions for continuous-print operation. Clogged nozzles are automatically detected and cleaned; only good nozzles are used as substitutes if clogged nozzles are not recovered after cleaning. Various capabilities and innovative solutions maintain operation without losing productivity during the occurrence of unexpected problems. The UV curing ink LUS-120 is a new durable and flexible ink offering beautiful printing, developed especially for the SIJ-320UV.

◎Product outlines

  • 3.2 m-wide LED-UV inkjet printer
    ・LED-UV curing 3.2 m wide grand-format inkjet printer delivers high productivity.
    ・Dedicated roll-to-roll inkjet printer for various signage media, including PVC and other banner materials.

  • Mimaki’s superior print-image quality control technology
    ・Mimaki Advanced Pass System 4 (MAPS4) reduces banding and uneven color printing.
    ・Mimaki Fine Diffusion 1 (MFD1), a patented dithering technique, is incorporated in the Mimaki RIP RasterLink 6 software.
    ・The “waveform control” technique ensures ink droplet landing accuracy.

  • Solutions for uninterrupted printing operations
    ・Nozzle check unit (NCU) automatically detects and cleans clogged nozzles. Moreover, the nozzle recovery system (NRS) uses only good nozzles as substitutes, if the clogged nozzles are not recovered after cleaning. These functions maintain constant printing and reduce waste printing due to defective nozzles.

  • Newly developed high-performance UV curing ink
    ・The high-performance LUS-120 UV ink is newly developed for SIJ-320UV and possesses durability and flexibility.

  • Simultaneous twin-roll printing enhances productivity
    ・Simultaneous printing on two rolls is possible. The maximum mountable media width is 1,524 mm for each role; this capability increases printing productivity.

◎Main features

1. Mimaki’s unique quality-control techniques

1) MAPS4—Mimaki Advanced Pass System 4

Generally, swath boundaries are straight lines. Therefore, a slight misalignment between boundaries causes banding or uneven color printing. In order to reduce such unwanted printing, Mimaki has developed MAPS. The SIJ-320UV is the world’s first printer that uses the latest MAPS4 technique, incorporating the most advanced algorithm for spattering boundaries between print swathes. Beautiful quality print outs are produced even in high-speed printing and lengthy printing operations.

2) MFD1—Mimaki Fine Diffusion 1

Dithering is an image processing technique, which transforms image data for inkjet printing. Pattern and error-diffusion dithering may, however, generate particular image noise resulting in uneven color printing or tone jumps, even on a high-performance printing unit.
The newly developed RasterLink 6 software,*1 incorporating the patented*2 image-processing MFD1, reduces noises due to dithering through hybrid processing of pattern- and error-diffusion dithering, thereby enhancing printing quality.
*1: MFD1 is available for Version 4.0 and higher
*2: Patent number: 5230816

3) Waveform control

Each ink color has its own specific gravity and viscosity. To achieve a precise placement of ink droplets onto the media, Mimaki has designed an optimum waveform control technique that allows the printhead to jet each ink color at an optimum angle, maintaining excellent ink droplet circularity. In each printing mode, ink droplet sizes from 7 pl to 36 pl are automatically selected to obtain optimum print results.

2. Uninterrupted printing solutions

Useful functions are similar to excellent assistants. Clogged nozzles are automatically detected and recovered without causing inconvenience to users. The nozzle check unit (NCU) automatically detects clogged nozzles and operates cleaning; whereas, the NRS uses only good nozzles as substitutes, if the clogged nozzles are not recovered after cleaning. These functions allow constant printing and reduce waste printing due to defective nozzles. Moreover, stable media feeding also assists in producing precise and beautiful printing.

1)NCU automatically detects and recovers clogged nozzles

Clogged nozzles are detected automatically by monitoring ink droplets with sensors. When clogged nozzles are located, these are automatically cleaned, reducing waste printing. Nozzles are checked per transfer file.

2)NRS for maintaining productivity

If the clogged nozzles are not recovered after cleaning through the NCU function, the NRS selects substitute nozzles and then restarts printing. This is a significant novelty, since previously, when nozzle cleaning fails, the printhead has to be repaired by a technician, and the printing operation ceases until the printhead is repaired. The NRS allows the printer to continue printing without interruption by using non-defective nozzles as substitutes for defective nozzles until the technician arrives.*3
*3: NRS may not be activated depending on print modes.

*Click to view larger image.

3) Precise media feeding mechanism supports fine printing

Thirty-eight pinch rollers at equal distances and newly designed tension bars are installed to prevent media lifting and to enhance feeding precision by applying equal pressure to the media at all points.

3. LUS-120 : a new high-performance UV curing ink

Mimaki develops optimal UV curing ink for signage printing with the SIJ-320UV. The high-performance UV curing LUS-120 ink exhibits durability as well as flexibility. It provides beautiful, durable printing results even on soft media such as banner materials that are not laminated.

4. Twin-roll simultaneous printing enhances productivity

Taking advantage of the 3,200 mm printing width, two media rolls can be mounted and can be printed on simultaneously*4. This function enables operating different print jobs at once. The user may select the preferable widths separately for each roll within a specified range from 210 to 1,540 mm. Each media width and the distance between the two media rolls are automatically detected.
*4: The same media type should be used when printing on two media rolls simultaneously.

5. High-speed printing at a maximum speed of 110 m2/h

The SIJ-320UV provides an optimum combination of printing speed and quality in accordance with desired print results by utilizing a wide range of printing modes, including a draft printing mode at the maximum speed of 110 m2/h and a high-quality printing mode with 900 × 1,200 dpi/16-pass.

*Click to view larger image.


Head On-demand piezo head (4 staggered printheads)
Print resolution 300 dpi, 600 dpi, and 900 dpi
Head gap 1.7 mm/1.9 mm/2.6 mm/3.3 mm
Maximum print width 3,200 mm
Maximum media width 3,250 mm
(Small drive shaft with roll holders: 1,600 mm×1)
(Twin rolls printing with a small drive shaft: 1,524 mm×2)
Minimum media width 210 mm
(Twin-roll printing: 210 mm×2 rolls)
InkType / Color LUS-120(C,M,Y,K)
Packaging 1 liter ink bottle
Ink can be filled up to 3 liters per ink container of the printer.
Media thickness 1.0 mm or less
Roll outer diameter Large drive shafts : Φ250 mm or less
Small drive shaft with roll holders : Φ180mm or less
Roll weight Large drive shafts : 100 kg or less
Small drive shaft with roll holders : 25 kg or less
Interface USB2.0
Power supply AC 200–240V ± 10% 50/60Hz ±1 Hz, 15 A or less
Power consumption 3.6 kW or less
Operational environment Temperature: 20–30 °C (68–86 °F)
Humidity: 35–65 %Rh (No condensing)
Dimensions (W×D×H) 5,420 mm × 995 mm × 1,445 mm
Weight 850kg

* Specifications, design, and dimensions are subject to change without notice.


Mimaki Engineering Co., Ltd.
Global Marketing Department
Postal code: 389-0512
Address: 2182-3 Otsu Shigeno Tomi Nagano, Japan
Tel: +81-(0)268-64-2281, Fax: +81-(0)268-64-2285

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