Features of RISO Technologies' Inkjet Heads

1. High-viscosity Ink Jetting

RISO Technologies' inkjet heads are highly regarded for their performance with high-viscosity inks.
Our ink-recirculation type CF1B has achieved jetting of inks with viscosities exceeding 40 [mPa·s].
Since there is a sufficient driving voltage range for stable jetting, it ensures the reliable jetting of high-viscosity inks.

Viscosity Performance Range

• ※
  The viscosity shown above is the actual viscosity of ink at the moment of jetting.
• ※
  Inks shown above are inks that were actually tested. Performance varies depending on ink.

Print Samples with High-viscosity Ink (Viscosity: 30 [mPa・s]@25 ℃)
Native resolution of 600dpi enables a clear and sharp printing for as small as 2pt (0.7 mm) characters.

2. Wide Print Gap

RISO Technologies' inkjet heads offer good print quality with wider print gap.
Unique and excellent technology of mechanical process and jetting control
minimizes deviation of jetting angles and achieves accurate dot placement even with wider print gap.

6.5 mm Print Gap Sample
Native resolution of 600dpi enables a clear and sharp printing for as small as 2pt (0.7 mm) characters.

10 mm Print Gap Sample
Capable of printing scannable QR codes.

• ※
  Inks shown above are inks that were actually tested. Performance varies depending on ink.
  

3. High Quality Printing

Drop Volume Adjustment on Each Nozzle

RISO Technologies' inkjet heads (CF3/CF3R) are capable of adjusting jetting volume of selected nozzles with its fine tuning function.

Variation of jetting volume can be uniformed by fine tuning function at micro level.

The fine tuning function helps enhance print quality.
By adding 15 levels of the fine tuning function onto original 7 gray levels printing, it is possible to achieve up to 91 levels of gradation in total on each pixel.
The fine tuning function also helps reduce density variation which is visible at the borders between the inkjet heads mounted.

*Print result

Fine tuning at the border of 2 inkjet heads

Excellent Print Quality

Smooth Tone and Less Graininess

Multiple drop jetting technology^*1 up to 7 drops creates 8 levels of density gradation within a single dot^*2.
This gives a smooth tone of image from light to dark with less graininess.

• *1：
  A multi-value printing method that switches dot size by controlling the number of times ink is ejected.
• *2：
  These specifications are for the CF1B. They may vary by product, so please contact us for more details.

Printing with Higher Resolution

Fine art graphics can be reproduced with small drop jetting technology.

Print Samples (Print Gap: 2.0 / 5.0 mm)
Native resolution of 600dpi enables a clear and sharp printing for as small as 2pt (0.7 mm) characters.

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