Electrostatic printing assist systems ESA

The Heliofurn-System is a non-contact electrostatic printing aid for avoiding so called “missing dots” during gravure printing. These “missing dots” are places in the print where ink from the ink cells of the gravure cylinder is not transferred to the web.

The ESA loading system charges up the specially manufactured ESA impression roller. A DC current is created across the entire printing width, which flows through the printing substrate to the grounded engraving cylinder. The DC current polarizes the printing ink in the cells of the gravure cylinder. This polarization effect increases the volume of the ink cells and a better ink transfer to the printing material is achieved. That means, no more so-called “missing dots”.

without electrostatic printing assist system (ESA)

with electrostatic printing assist (ESA)

All systems comply with the latest ATEX explosion protection directives and can be used in hazardous areas.

Indirect loading: 24 kV | The proven classic indirect loading system with a long or short electrode.

H-35 | Long Electrode

The proven classic indirect loading system with a long electrode. The working width of the electrode in nearly the length of the impression roller width. The charging device works with a 2 or 3-layer ESA impression roller.

H-98 | Short Electrode

The indirect loading with the short electrode is almost maintenance-free. The working width of the electrode corresponds to 1/6 of the impression roller width. The charging device works with a 3-layer ESA impression roller.

Direct charging: 3 kV | The maintenance-free direct loading systems for conventional impression rollers and impression roller sleeve systems.

H-2000 | Side Loading Device

The side loading device works with direct contact with a 3-layer ESA impression roller and is the most powerful system in terms of efficiency.

Florentil | Side Loading Device for Sleeves

The side loading device works with direct contact with a 3-layer ESA impression roller sleeve and is the most powerful system in terms of efficiency.

Eklektika | For conductive printing substrates

The new Spengler innovation ESA Eklektika is the only ESA system on the market with which you can print on metallized substrates.

The two systems, Top Load and Eklektika, can be combined. A sensor detects the metallized substrate and automatically switches between the ESA Top Load and ESA Eklektika operating modes.