HP M775f Guia do Utilizador Página 128

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Printing process (inkjet, press, or laser technology for example)
Overhead lighting
Personal differences in perception of color
Software programs
Print drivers
Computer operating system
Monitors and monitor settings
Video cards and drivers
Operating environment (humidity for example)
For most situations, the best method for matching colors on the screen to the printed page is to print
sRGB colors.
Sample book color matching
The process for matching product output to preprinted sample books and standard color references is
complex. In general, you can obtain a reasonably good match to a sample book if the inks used to
create the sample book are cyan, magenta, yellow, and black. These are usually referred to as process
color sample books.
Some sample books are created from spot colors. Spot colors are specially created colorants. Many of
these spot colors are outside of the range of the product. Most spot color sample books have
companion process sample books that provide CMYK approximations to the spot color.
Most process sample books will state which process standards were used to print the sample book. In
most cases they will be SWOP, EURO, or DIC. To get optimal color matching to the process sample
book, select the corresponding ink emulation from the product menu. If you cannot identify the process
standard, use SWOP ink emulation.
Print color samples
To use the color samples, select the color sample that is the closest match to the desired color. Use the
sample’s color value in the software program to describe the object you wish to match. Printed colors
vary depending on the paper type and the software program.
Use the following procedure to print color samples at the product using the control panel:
1. From the Home screen on the product control panel, scroll to and touch the Administration button.
2. Open the following menus:
Reports
Other Pages
3. Select either the RGB Samples or the CMYK Samples option, and touch the OK button.
114 Chapter 5 Print ENWW
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