User manual HP COLOR LASERJET ENTERPRISE CP4525DN

[. . . ] COLOR LASERJET ENTERPRISE CP4020/CP4520 SERIES PRINTER User Guide CP4025n CP4025dn CP4525n CP4525dn CP4525xh HP Color LaserJet Enterprise CP4020-CP4520 Series Printer User Guide Copyright and License © 2009 Copyright Hewlett-Packard Development Company, L. P. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. [. . . ] This technology scans documents and automatically adjusts photographic images in . JPEG or . PNG format. HP EasyColor technology enhances the entire image at one time, rather than dividing it into several pieces, which results in improved color consistency, sharper details, and faster printing. In the following example, the images on the left were created without using the HP EasyColor option. The images on the right show the enhancements that result from using the HP EasyColor option. The HP EasyColor option is enabled by default in the HP PCL 6 printer driver, so you do not need to make manual color adjustments. To disable the option so you can manually adjust the color settings, open the Color tab, and click the HP EasyColor check box to clear it. 142 Chapter 8 Color ENWW Match colors The process of matching product output color to your computer screen is quite complex because printers and computer monitors use different methods of producing color. Monitors display colors by light pixels using an RGB (red, green, blue) color process, but printers print colors using a CMYK (cyan, magenta, yellow, and black) process. Several factors can influence your ability to match printed colors to those on your monitor. These factors include: ● ● ● ● ● ● ● ● ● ● ● Paper Printer colorants (inks or toners for example) Printing process (inkjet, press, or laser technology for example) Overhead lighting Personal differences in perception of color Software programs Printer drivers Computer operating system Monitors and monitor settings Video cards and drivers Operating environment (humidity for example) Keep the above factors in mind when colors on your screen do not perfectly match your printed colors. For most users, the best method for matching colors on your screen to your product 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. 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. 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 your software program to describe the object you wish to match. Colors may ENWW Match colors 143 vary depending on paper type and the software program used. For more details on how to use the color samples, go to www. hp. com/support/cljcp4025 or www. hp. com/support/cljcp4525. Use the following procedure to print color samples at the product using the control panel: 1. to highlight the INFORMATION menu, and press the OK button. Press the down arrow to highlight either the PRINT RGB SAMPLES or the PRINT CMYK SAMPLES option, and press the OK button. PANTONE® color matching PANTONE has multiple color matching systems. PANTONE MATCHING SYSTEM® is very popular and uses solid inks to generate a wide range of color hues and tints. See www. hp. com/go/ cljcp4025_software or www. hp. com/go/cljcp4525_software for details on how to use PANTONE Colors with this product. NOTE: PANTONE Colors generated might not match PANTONE-identified standards. [. . . ] 2) For regulatory purposes, this product is assigned a Regulatory model number. This number should not be confused with the product name or the product number(s). 3) The product meets the requirements of EN55022 & CNS13438 Class A in which case the following applies: “Warning - This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. ” Boise, Idaho , USA October 2009 For regulatory topics only: European Contact: Your Local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department HQ-TRE / Standards Europe, Herrenberger Straße 140, D-71034 Böblingen, Germany, (FAX: +49-7031-14-3143), http://www. hp. com/go/ certificates USA Contact: Product Regulations Manager, Hewlett-Packard Company, PO Box 15, Mail Stop 160, Boise, Idaho 83707-0015, USA, (Phone: 208-396-6000) ENWW Declaration of Conformity 255 Safety statements Laser safety The Center for Devices and Radiological Health (CDRH) of the U. S. [. . . ]