HP Designjet 4000 Printer series - Manual (Page 200)

The problem is color accuracy
There are two basic requirements for color accuracy:
1.
Ensure that your paper type has been calibrated, which will give you consistency
from print to print, and from printer to printer. See “How do I perform color
calibration?” on page 139.
2. Select suitable options in your application: see “How do I get accurate colors from
my printer?” on page 139.
Note If you are not using PostScript, remember that your printer may be
configured to use one of its internal pen palettes instead of your software's
palette (which is the default). See “The problem is pen settings seem to have
no effect” on page 206.
Color accuracy using EPS or PDF images in page layout applications
Page layout applications such as Adobe InDesign and QuarkXPress do not support
color management of EPS, PDF, or grayscale files.
If you have to use such files, try to ensure that the EPS, PDF, or grayscale images are
already in the same color space that you intend to use later on in Adobe InDesign or
QuarkXPress. For instance, if your final goal is to print the job in a press that follows
the SWOP standard, at the time of creating the EPS, PDF or grayscale you should
convert the image into SWOP.
The problem is PANTONE color accuracy
Spot colors are special premixed inks to be used directly in the press, and the best–
known spot colors are PANTONE colors.
If you have the PostScript model, your printer provides a facility called Automatic
PANTONE Calibration, which can easily match most of the PANTONE Solid Coated
spot colors. When an application sends a PANTONE color to print, it sends the
PANTONE name together with its own estimate of equivalent CMYK values. The
Automatic PANTONE Calibration facility recognizes the PANTONE name and
converts it to CMYK in a way that depends on the printer model and the selected
paper type, enabling the color to be rendered with greater precision than is possible
with the generic CMYK values sent by the application.
Even when using Automatic PANTONE Calibration, you cannot expect the printer to
match the PANTONE colors exactly. Your printer is certified by Pantone for some
papers, but this does not mean that it can reproduce 100% of the PANTONE colors.
Using Automatic PANTONE Calibration (the best choice)
In order to use Automatic PANTONE Calibration, you need an application that
recognizes the PANTONE colors, and a calibrated PostScript printer.
The Automatic PANTONE Calibration facility emulates PANTONE Solid Coated colors
only (suffix C). Other PANTONE colors will be printed using the CMYK values sent by
the application.
Chapter 13
198
The
problem
is print
quality