Epson STYLUS PRO 4400 Specifications page 6

Superb Quality
Excellence With Every Print
Epson's commitment to superb print quality is underpinned by advanced technologies that have been a hallmark
of Epson's global leadership in professional colour and black-and-white printing. These are technologies that
ensure every print benefits from:
> Incredibly accurate ink droplet placement
> Precise control over variable sizing of ink droplets
Nozzle
Ink Droplet Ink Supply Hole
Ink Reservoir
Accurate Ink Placement
One of the key factors in achieving absolute clarity in prints is precision
in the ink droplet formation process. By utilising Micro Piezo
as opposed to a thermal or "bubble" system, the Micro Piezo print head is
Chamber Plate
capable of controlling the curvature (meniscus) of the upper surface of the
ink column at the print head nozzles. This Advanced Meniscus Control
Piezo
(AMC) technology enables the Epson STYLUS
Ink
deliver sharp, accurately placed spherical ink droplets on the print media.
Chamber
This feature is of particular benefit in environments where accurate colour
and fine detail are required.
Precise Ink Droplet Sizing
For each of the resolution settings that can be made with the Epson
STYLUS PRO 400 Series printers, the Micro Piezo print head utilises a
specific set of three different size droplets, any combination of which can
be produced in one pass of the print head and through each of the 180 x 8
print nozzles. At high resolutions, these ink droplets can be as small as 3.5
picolitres – four times smaller than the diameter of a human hair.
This precision control over ink droplet size is achieved by means of
Epson's Variable Sized Droplet Technology (VSDT), which is instrumental
in delivering true 1440dpi resolution. The advantages in professional
printing of VSDT are:
> increased print speed by using larger droplet sizes for image areas of
the same colour; and,
> in conjunction with the Epson AMC technology, superb detail with
accurately placed smaller droplets.
™ technology,
™
PRO 400 Series printers to