Epson Stylus Pro 9900 Quick Reference Manual page 3

Variable Sized Droplet Technology
By controlling the electric pulse applied to the print
head's Piezo element, the Epson Stylus
series MicroPiezo print head is capable of
®
producing several different sizes of ink droplets,
depending on the image type and media used. This
new generation of MicroPiezo
the Variable Sized Droplet function to improve image
quality whilst optimising print speed.
2880 x 1440 dpi Resolution
The Epson Stylus Pro 900 series offers industry-leading
®
output quality, with print resolution of up to 2880 x 1440 dpi.
This is achieved as the result of technologies that include
Variable Sized Droplet Technology, which supports ink
droplets as small as 3.5pl, and Advanced Meniscus
Control, which enables the printer to deliver sharp,
accurately placed spherical ink droplets with high
levels of precision.
1440 x 1440 dpi Mode
With the addition of a new print resolution, 1440 x 1440 dpi,
which can be used in conjunction with a third-party
RIP, the Epson Stylus Pro 900 series delivers improved
®
quality and dot sharpness when generating 1 bit
TIFF proofs.
Poor
gradation
Good
gradation
• Smoother Gradation:
In combination with the 10-colour ink system, the new
LUT technology delivers prints with noticeably smoother
colour gradation and transition.
®
Pro 900
print head improves
®
Colour gamut
with nonsmooth
LUT gradation
Colour gamut
with smooth
LUT gradation
Pro 7900/9900
Print Speed Comparision
Normal
High Speed Throughput
In contrast to their predecessors, the Epson Stylus
able to achieve print throughput at rates of up to more than twice
the speed*.
* Based on A1 plain paper draft mode 7900/9900
* Based on A2 plain paper draft mode 4900
Advanced LUT Technology
Utilising a new and sophisticated colour LUT (Look-Up Table)
technology, the Epson Stylus
high levels of optimisation in the key image quality areas of:
LUT with poor grain
characteristics
• Grain Reduction:
By improving the ink combination selection process, the new
LUT technology dramatically reduces instances of image
grain that tend to be prevalent in skin tones.
• Colour Constancy:
With a colour constancy level of less than DeltaE 1.0, print
colours remain visually consistent when viewed under
different lights and lighting conditions.
Pro 4900
Print Speed Comparision
Epson Stylus®Pro4900
Epson Stylus®Pro4880
Speed
Quality
Max Quality
Speed
Quality
Max Quality
Time (min.)
900 series is
®
Pro 900 series printers achieve
®
LUT with good LUT quality affects
grain characteristics the graininess of
skin tones.
Print size A2