HP Designjet 4500 Printer series - Manual (Page 282)

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.
Converting PANTONE colors manually
If you have a non–PostScript printer, or if you are using an application (such as Adobe Photoshop)
that does not send the name of the PANTONE color to the printer, you will not be able to use
Automatic PANTONE Calibration. Instead, if you wish, you can convert each PANTONE color
manually to CMYK values in the application, using tables produced especially for your printer and
paper type.
If your application has a facility to convert PANTONE colors to CMYK values automatically, it
probably does not take account of printer or paper type, so you will get better results with a manual
conversion using the tables.
You can also obtain a PANTONE calibrated color chart in EPS, TIFF, and PDF format, which can be
convenient if your application has an eyedropper tool with which you can pick up colors from an
imported graphic.
Tips
● Automatic PANTONE Calibration works with PostScript printers only.
● Ensure that Automatic PANTONE Calibration is turned on in the driver.
● Some applications may not support PANTONE colors fully; for example, Photoshop 7.0 does
not send the PANTONE Color with its name, it sends only the CMYK values from its standard
table.
● Some colors may be out of gamut and impossible to match precisely with your printer and paper
type.
Color matching between different HP Designjets
If you print an image on two different printer models (for instance, on an HP Designjet 4000 Printer
series and an HP Designjet 1000 Printer series), you may find that the colors of the two prints do not
match well.
Matching two printing devices that use different ink chemistry, paper chemistry, and printheads is
unlikely to be completely successful. The information provided here is the best way to emulate one
printer with another. Even so, the end result may not be a perfect match.
Printing via separate PostScript drivers
The situation is that you are printing on each printer using the PostScript driver installed for that
printer. In this example, we are using an HP Designjet 4000 Printer series and an HP Designjet 1000
Printer series.
1. Ensure that both printers have been updated to the latest firmware version. See Update my
printer's firmware.
2. Ensure that you have the latest printer driver for both printers. You can download the latest
versions for any HP printer from http://www.hp.com/go/designjet.
268 Chapter 18 The problem is... (print quality topics) ENWW
The problem is... (print
quality topics)