HP OfficeJet Pro K850 User Manual

							ResourceDescriptionLocation
System tests and printouts (such as
the print-quality analysis printout and
paper-path test)Provides information to help diagnose
problems in the print mechanism and
paper path.See Administer the printer.
HP websitesProvides the latest printer software,
product, and support information.www.hp.com/support/officejetprok850
www.hp.com/support
HP Total Care telephone support Lists information to contact HP. During
the warranty period, this support is
often free of charge.See HP Total Care phone numbers.
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							Accessibility
Your HP printer provides a number of features that make it accessible for people with disabilities.
Visual
The printer software is accessible for users with visual impairments or low vision through the use of
your operating system’s accessibility options and features. It also supports most assistive technology
such as screen readers, Braille readers, and voice-to-text applications. For users who are color blind,
colored buttons and tabs used in the software and on the HP printer have simple text or icon labels
that convey the appropriate action.
Mobility
For users with mobility impairments, the printer software functions can be executed through
keyboard commands. The software also supports Windows accessibility options such as StickyKeys,
ToggleKeys, FilterKeys, and MouseKeys. The printer doors, buttons, paper trays, and paper guides
can be operated by users with limited strength and reach.
Support
For more details about the accessibility of this product and HPs commitment to product accessibility,
visit HPs Web site at 
http://www.hp.com/accessibility.
For accessibility information for Macintosh operating systems, visit the Apple web site at
http://www.apple.com/disability.
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							Understanding the printer parts
Front view
1
Control panel
2
Top cover
3
Ink cartridge cover
4
Printhead latch
5
Printheads
6
Ink cartridges
7
Front manual feed slot
8
Input tray
9
Paper guides
10
Output tray
Control panel
For more information, see Printer lights reference.
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							1 (Power button and light)
2
 (Cancel button)
3
 (Resume button and light)
4
 (Paper Jam light)
5
 (Door Open light)
6
 (Out of Paper light)
7
 (Color indicator lights)
8
 (Printhead light)
9
 (Ink Cartridge light)
Back view
1
Parallel (IEEE 1284) connector
2
USB connector
3
Network connector (HP Officejet Pro K850dn Color Printer only)
4
Power input
5
Paper guide
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							6
Rear manual feed slot
7 Automatic two-sided printing accessory (duplex unit) Included with the HP Officejet Pro K850dn Color Printer. To
order separately, see 
HP supplies and accessories for information about ordering accessories.
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							Installing other software 
The following drivers and optional software are also available for installation on the printer.
●HP Web Jetadmin: This is a Web browser-based network printer management tool. A link to the
HP Web Jetadmin website is included on the Starter CD. For more information about using this
tool, see 
HP Web Jetadmin software.
●
Linux driver: Available at 
www.hp.com/support. For more information about using Linux with HP
printers, see 
hpinkjet.sourceforge.net.
If you are using Windows NT 4.0, Windows 2000, or Windows XP, you must have administrator
privileges to install a printer driver.
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							2
Installing accessories
See HP supplies and accessories for information about ordering accessories.
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							Installing the automatic two-sided printing accessory
You can print on both sides of a sheet of paper automatically when the automatic two-sided printing
accessory (duplex unit) is installed on the printer. The duplex unit comes with the HP Officejet Pro
K850dn Color Printer. It can also be ordered separately. See 
HP supplies and accessories. For
information on using the duplex unit, see 
Printing on both sides (duplexing).
To install the duplex unit
1.Push the buttons on both sides of the rear-access panel.
2.Remove the panel from the printer.
3.Slide the duplex unit into the printer until the unit locks into place.
NOTEDo not press the buttons on either side of the duplex unit when installing; use
them only for removing the unit from the printer.
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							3 Using the printer
This section provides information on media usage for the printer, changing print settings, and
performing basic printing tasks.
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							Selecting print media
The printer is designed to work well with most types of office paper. It is best to test a variety of print
media types before buying large quantities. Use HP media for optimum print quality. See 
HP supplies
and accessories. For more information about HP media, see www.hp.com.
Tips for selecting and using print media
For the best results, observe the following guidelines.
●Always use media that conforms to the printer specifications. See 
Understanding specifications
for supported media.
●Select the appropriate media type and size from the printer driver. See 
Changing print settings.
●Load only one type of media at a time into a tray.
●For the input tray, load media print-side down and aligned against the right and back edges of
the tray. See 
Loading media.
●Do not overload the tray. See 
Understanding specifications for supported media.
●To prevent jams, poor print quality, and other printer problems, avoid the following media:
●Multipart forms
●Media that is damaged, curled, or wrinkled
●Media with cutouts or perforations
●Media that is heavily textured, embossed, or does not accept ink well
●Media that is too lightweight or stretches easily
●If using recycled media, you might need to lower the ink volume in the printer software to prevent
smeared ink. However, if you lower the ink volume too much, the output might appear washed out.
●If using recycled media, you might need to use another media type to prevent paper jams.
Cards and envelopes
●Avoid envelopes that have a very slick finish, self-stick adhesives, clasps, or windows. Also avoid
cards and envelopes with thick, irregular, or curled edges, or areas that are wrinkled, torn, or
otherwise damaged.
●Use tightly constructed envelopes, and make sure the folds are sharply creased.
●Load envelopes into the printer according to the icon on the tray.
Photo paper
●Use the Best mode to print photographs. Note that in this mode, printing takes longer and more
memory is required from your computer.
●Remove each sheet as it prints and set it aside to dry. Allowing wet media to stack up might
cause smearing.
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