HP LaserJet Enterprise M551n User Manual

							Use HP EasyColor
If you are using the HP PCL 6 printer driver for Windows, the HP EasyColor technology automatically
improves mixed-content documents that are printed  from Microsoft Office programs. This technology
scans documents and automatically adjusts phot ographic 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.
If you are using the HP Postscript printer driver for Mac,  HP EasyColor technology scans all
documents and automatically adjusts all photographic images with the same improved photographic
results.
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 both the HP PCL 6 printer driver and the HP Mac
Postscript 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 in the Windows driver or the  Color/
Quality Options  tab in the Mac driver, and then click the  HP EasyColor check box to clear it.
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							Match colors to your computer screen
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 prin ted 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. 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 th e product menu. If you cannot identify the process
standard, use SWOP ink emulation.
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							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 de scribe the object you wish to match. Colors might
vary depending on paper type and the software pr ogram used. For more details on how to use the
color samples, go to 
www.hp.com/support/lj500colorM551 .
Use the following procedure to print color samples at the product using the control panel:
1. Press the Home 
 button.
2. Open the following menus:
●Administration
● Reports
● Other Pages
3. Press the down arrow 
 to highlight either the  RGB Samples or the  Print CMYK Values
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/
lj500colorM551_software for details on how to use PANTONE Colors with this product.
NOTE:PANTONE Colors generated might not match PANT ONE-identified standards. Consult current
PANTONE Publications for accurate color.
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							10 Manage and maintain
●Print information pages
●
Use the HP Embedded Web Server
●
Use HP Web Jetadmin
●
Product security features
●
Economy settings
●
Clean the product
●
Product updates
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							Print information pages
Information pages provide details about the product and its current configuration. Use the following
procedures to print commonly used information pages:
1.At the control panel, press the Home 
 button.
2. Open the following menus:
●Administration
● Reports
● Configuration/Status Pages
 or Other Pages
3. Use the down arrow button 
 to highlight a report, and then press the  OK button to select it.
4. Use the up arrow button 
 to highlight the  Print item, and then press the  OK button.
Table 10-1   Reports menu
First level Second levelDescription
Configuration/Status Pages Administration Menu Map Prints a map of the control panel-menu
layout. The active settings for each menu are
listed.
  Configuration PageShows the product settings and installed
accessories.
  Supplies Status PageShows the approximate remaining life for the
supplies; reports statistics on total number of
pages and jobs processed, serial number,
page counts, and maintenance information.
HP provides approximations of the
remaining life for the supplies as a customer
convenience. The actual remaining supply
levels might be different than the
approximations provided.
  Usage PageShows a count of all paper sizes that have
passed through the product; lists whether
they were simplex, duplex, monochrome, or
color; and reports the page count.
  File Directory PageShows the file name and folder name for files
that are stored in the product memory.
  Current Settings PageShows the current settings of the product.
  Color Usage Job LogPrints the color-use statistics for the product.
Other Pages Demonstration Page Prints a demonstration page that highlights
the printing capability of the product.
  RGB SamplesPrints color samples for different RGB values.
Use the samples as a guide for matching
printed colors.
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							Table 10-1  Reports menu (continued)
First level Second levelDescription
  CMYK SamplesPrints color samples for different CMYK
values. Use the samples as a guide for
matching printed colors.
  PCL Font ListPrints a list of all the PCL fonts that are
installed.
  PS Font ListPrints a list of all the PostScript (PS) fonts that
are installed.
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							Use the HP Embedded Web Server
Use the HP Embedded Web Server to view product status, configure product network settings, and to
manage printing functions from your computer instead of from the product control panel. The following
are examples of what you can do using the HP Embedded Web Server:
● View product status information.
● Determine the remaining life for all supplies and order new ones.
● View and change tray configurations.
● View and change the product control-panel menu configuration.
● View and print internal pages.
● Receive notification of product and supplies events.
● View and change network configuration.
To use the HP Embedded Web Server, your brow ser must meet the following requirements:
● Windows: Microsoft Internet Explorer 5.
01 or later or Netscape 6.2 or later
● Mac OS X: Safari or Firefox using Bonjour or an IP address
● Linux: Netscape Navigator only
● HP-UX 10 and HP-UX 11: Netscape Navigator 4.7
The HP Embedded Web Server works when the produc t is connected to an IP-based network. The HP
Embedded Web Server does not support IPX-base d product connections. You do not have to have
Internet access to open and use the HP Embedded Web Server.
When the product is connected to the network,  the HP Embedded Web Server is automatically
available.
NOTE: For complete information about using the HP Embedded Web Server, see the  HP Embedded
Web Server User Guide , which is on the HP website at 
www.hp.com/support/lj500colorM551 .
Open the HP Embedded Web Server by using a network
connection
1.
At the control panel, press the Home  button.
Open the following menus:
● Administration
● Reports
● Configuration/Status Pages
2. Use the down arrow button 
 to highlight the  Configuration Page  item, and then press the  OK
button.
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							3.Use the up arrow button  to highlight the  Print item, and then press the  OK button.
4. Locate the IP address or host name on the HP Jetdirect page.
NOTE: Mac OS X users can also use the Bonjour (m DNS) name located on the configuration
page to access the Embedded Web Server.
5. In a supported Web browser on your computer, type the product IP address or host name in the
address/URL field.
HP Embedded Web Server features
Information tab
Table 10-2   HP Embedded Web Server Information tab
Menu Description
Device Status Shows the product status and shows the estimated life remaining of HP supplies. The
page also shows the type and size of paper set for each tray. To change the default
settings, click the Change Settings  link.
Job Log Shows a summary of all jobs the product has processed.
Configuration Page Shows the information found on the configuration page.
Supplies Status Page Shows the status of the supplies for the product.
Event Log Page Shows a list of all product events and errors. Use the  HP Instant Support link (in
the  Other Links area on all HP Embedded Web Server pages) to connect to a set
of dynamic Web pages that help you solve problems. These pages also show
additional services available for the product.
Usage Page Shows a summary of the number of pages the product has printed, grouped by
size, type, and paper print path.
Device Information Shows the product network name, address, and model information. To customize
these entries, click the Device Information  menu on the General  tab.
Print Upload a print-ready file from your computer to print. The product uses the default
print settings to print the file.
Print Reports and Pages Lists the internal reports and pages for the product. Select one or more items to print
or view.
General tab
Table 10-3  HP Embedded Web Server General tab
Menu Description
Control Panel Administration
Menu Shows the menu structure of the 
Administration menu on the control panel.
NOTE: You can configure settings on this screen, but the HP Embedded Web
Server provides more advanced configuration options than are available through
the  Administration  menu.
Alert Subscriptions Set up e-mail alerts for various product and supplies events.
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							Table 10-3  HP Embedded Web Server General tab (continued)
Menu Description
AutoSend Configure the product to send automated e-mails regarding product configuration
and supplies to specific e-mail addresses.
Control Panel Snapshot Shows an image of the current screen on the control-panel display.
Edit Other Links Add or customize a link to another Web site. This link appears in the  Other Links
area on all HP Embedded Web Server pages.
Ordering Information Enter information about ordering replacement print cartridges. This information
appears on the supplies status page.
Device Information Name the product and assign an asset number to it. Enter the name of the primary
contact who will receive information about the product.
Language Set the language in which to display the HP Embedded Web Server information.
Date and Time Set the date and time or synchronize with a network time server.
Sleep Schedule Set or edit a wake time, sleep time, and sleep delay for the product. You can set a
different schedule for each day of the week and for holidays.
Backup and Restore Create a backup file that contains product and user data. If necessary, you can use
this file to restore data to the product.
Restore Factory Settings Restore product settings to the factory defaults.
Solution Installer Install third-party software programs that can enhance the product functionality.
Firmware upgrade Download and install product firmware upgrade files.
Statistics Services Provides connection information about third-party job-statistics services.
Print tab
Use the Print tab to enable or disable walk-up USB printi ng. Jobs printed from USB will use the default
print settings. the following file types  are supported for walk-up USB printing:
● .pdf
● .prn
● .pcl
● .ps
● .cht
Table 10-4
  HP Embedded Web Server Print tab
Menu Description
Retrieve from USB
Setup Enable or disable the 
Retrieve Job From USB  menu on the control panel.
Manage Stored Jobs Use this feature to manage jobs stored on the product memory.
Restrict Color Use this item to restrict the number of color pages that can be printed from this product.
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