Panasonic 8420 Reference Guide

61 Working with Color
Raster images and vector images
Two broad categories of artwork can be printed from a personal computer 
to a color printer: raster and vector images.
A raster image, also referred to as a bitmap, is composed of a grid of 
pixels, each assigned a particular color value. The grid, when sufficiently 
enlarged, resembles a mosaic made from square tiles. Examples of raster 
images include scans and images created in painting or pixel-editing 
applications, such as Adobe Photoshop and...

Working with Color
62
Optimizing files for processing and printing
The following sections provide tips on how to create image files that 
produce the highest possible print quality while minimizing the processing 
time and disk space they require.
While a 72 ppi raster image appears sharp on a monitor, the same image 
would likely appear pixelated when printed to the KX-P8420. Color print 
devices are capable of much greater detail than monitors, and require 
correspondingly higher resolution image...

63 Working with Color
To find the best image resolution for your purposes, make test prints of 
some raster artwork at different resolutions. Start with a high-resolution 
image (400 ppi) and save versions at progressively lower resolutions, down 
to 100 ppi, using a pixel-editing application such as Photoshop. Always 
save a copy of the original high-resolution version in case you need to 
revert to it. The high-resolution data cannot be recreated from a lower 
resolution version. 
Print the files and...

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64
Color management on the KX-P8420
The KX-P8420 uses a simple and flexible color architecture that produces 
excellent color results with default settings. It also allows you to customize 
your color results using various color controls.
Settings for the following KX-P8420 options can be specified via print dialog 
box options when you send a job. Some can also be set as defaults by the 
administrator during KX-P8420 Setup. Settings specified via the print dialog 
box override any...

65 Working with Color
The RGB Source option is used to provide a source color space definition 
for RGB data in your document. The setting you specify for this option 
overrides any source color space profiles you may have specified using 
other color management systems. For example, if you specified a 
ColorSync System Profile on the Macintosh computer, the RGB Source 
setting specified in the Print dialog box overrides it. In cases where you 
don’t want this setting to override another specified source...

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66
Color rendering dictionaries (CRDs) are used to perform color conversions 
on RGB data. The following table describes the CRDs for KX-P8420 
software and provides guidelines on when to use each one. Each color 
rendering style uses a different gamut mapping method, such as 
Photographic or Presentation, designed for a particular kind of color usage. 
NOTE:
•The rendering styles referred to in the table cannot be used when 
specifying a target device profile with a color management...

67 Working with Color
If you are using the KX-P8420 to print proofs for an offset press job or to 
simulate another print device, select the appropriate CMYK Simulation 
setting. The CMYK Simulation setting specifies the offset press standard or 
other color gamut that you want to simulate.
The CMYK Simulation setting you should specify depends on the press 
standard for which the CMYK data was separated. For example, for images 
that were separated for SWOP-Coated paper, select SWOP-Coated as the 
CMYK...

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68
n Using the CMYK color reference page
The CMYK color reference page, included with your KX-P8420 user 
software, let you see how various cyan, magenta, yellow, and black 
combinations look when printed on your print device. Using the CMYK color 
reference pages, you can easily determine the CMYK values to specify to 
obtain the printed colors you want. 
The CMYK color reference file is an 11-page, letter-size PostScript file.
To use the CMYK color reference pages, download the file...

Appendix A69Fonts
The following section lists the built-in fonts included with your KX-P84\
20 
printer. 
NOTE:
• All fonts that are pre-installed on your printer have also been included\
 on 
the KX-P8420 Driver & Utility CD-ROM. For information on how to install \
these fonts on your computer, see “Installing additional software for\
 
Windows users” in the 
Setup Manual or Operating Instructions.
Resident printer fonts
Listed below are the 136 built-in printer fonts on the KX-P8420.
You can print the...

70 Fonts
•Goudy, Goudy-Bold, Goudy-Italic, Goudy-BoldItalic, Goudy-ExtraBold
•Helvetica, Helvetica-Bold, Helvetica-BoldOblique, Helvetica-Condensed, 
Helvetica-Condensed-Bold, Helvetica-Condensed-BoldObl, 
Helvetica-Condensed-Oblique, Helvetica-Narrow, Helvetica-Narrow-Bold, 
Helvetica-Narrow-BoldOblique, Helvetica-Narrow-Oblique, 
Helvetica-Oblique
•JoannaMT, JoannaMT-Bold, JoannaMT-Italic, JoannaMT-BoldItalic
•LetterGothic, LetterGothic-Bold, LetterGothic-BoldSlanted, 
LetterGothic-Slanted...