Epson 7800 - Stylus Pro Color Inkjet Printer Брошюра и технические характеристики - Страница 7

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Epson 7800 - Stylus Pro Color Inkjet Printer Брошюра и технические характеристики

Three-level Black Ink Technology

Over the years, the majority of silver halide photographs have

been in colour. Despite this, many professional photographers

choose black and white photography due to the simple and

direct expression of the medium, in addition to the power that

black and white photographs possess.

Until now, it has been technically very difficult for black and

white photographers to use digital photography because of

colour twists and short tonal gradation inherent in digital printers.

Epson's new UltraChrome

™

K3 ink substantially reduces these

problems, allowing black and white photographers to fully

express themselves using digital cameras and printers with

quality rivaling that of silver-halide processes.

Smooth Gradation in Highlights

and Shadows

Epson UltraChrome K3 ink produces smoother gradation in

highlights thanks to the addition of the new Light Light Black Ink.

Shadow areas also reveal more detail and produce denser blacks.

Epson

UltraChrome K3 Ink

Epson

UltraChrome K3 Ink

Colour Toning

The three black inks and low saturation

inks (such as light cyan and light

magenta) allow for subtle colour tonings.

Demanding professional photographers

will appreciate this feature for producing

various types of monochrome images.

Magnified

Neutral

Smooth Tonal Gradation

The three different density blacks found in Epson UltraChrome

K3 produce smooth gradation and substantially reduces colour

twist. The illustration below shows the smooth tonal scale that

is produced using Light Light Black Ink.

Density Ratio

Epson UltraChrome Ink

1/3

Production of Each Colour During Greyscale Printing

Epson UltraChrome Ink

Epson UltraChrome K3 Ink

Three tone levels when

Six tone levels obtained when using the 1/6 density

using Light Black

Light Light Black

Higher D-max with Glossy Media

The Photo Black ink in the Epson UltraChrome K3 ink set has

been improved, resulting in a higher D-max. This is very useful

for reproducing jet black areas. The end result are prints

containing a depth and richness never before experienced

with a digital colour printer.

Epson UltraChrome Ink

2.1

D-max

* Based on estimates from Epson. Results may change when tested in different

environments and using different measuring equipment.

Warm

Sepia

Epson UltraChrome K3 Ink

1/3

1/6

LLk

Epson UltraChrome K3 Ink

2.3

Cool