Filter
Top Products
4
ModiModifying Output Colorfying Output Color
Introduction The previous chapters of this manual have been concerned
with giving an overview of the color printing process,
choosing color modes, and using palettes. This portion of
the manual explains how color can be modified to produce a
desired result, from using halftone render algorithms to
change the way color is rendered, to compensating for the
yellow cast caused by a tungsten light source in a
photograph. The HP color printers can modify colors using
the following means:
Halftone render algorithms provide a way to modify
images based on a dither cell concept. The algorithm
chosen determines how specified colors are “rendered” as
dots on the printed page.
Color lookup tables can remap palette colors to
compensate for unwanted color characteristics of input
data. For example, if a scanned photograph had a
reddish cast, a color lookup table could be used to make
the printed image look as if it were taken under a more
balanced light source.
Gamma correction provides a way to adjust for color
differences in display monitors.
The Viewing Illuminant command allows you to vary the
xy chromaticity coordinates for the light source under
which you will be viewing a printed piece. For example, if
the printed document is to be viewed under a tungsten
light, the command modifies colors so that they have the
correct appearance when illuminated by a tungsten light
bulb.
The Monochrome Print Mode command converts each
color to its grayscale equivalent for faster, draft printing.