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should be construed as constituting an
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Trademark Credits
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®
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®
are U.S. registered trademarks of Microsoft
Corporation.
Windows Connect NowTM is a registered
trademark of Microsoft Corporation.
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and NetWare® are registered
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Safety Information
Always follow basic safety precautions
when using this product to reduce risk of
injury from fire or electric shock.
1. Read and understand all instructions in
the documentation that comes with the
printer.
2. Use only a grounded electrical outlet
when connecting this product to a power
source. If you do not know whether the
outlet is grounded, check with a qualified
electrician.
3. Observe all warnings and instructions
marked on the product.
4. Unplug this product from wall outlets
before cleaning.
5. Do not install or use this product near
water, or when you are wet.
6. Install the product securely on a stable
surface.
7. Install the product in a protected location
where no one can step on or trip over the
line cord, and the line cord cannot be
damaged.
8. If the product does not operate normally,
see
Maintaining and troubleshooting.
9. There are no user-serviceable parts
inside. Refer servicing to qualified service
personnel.
Table of contents
1 Getting started
Finding other resources for the product .................................................................................................2
Thank you for buying the printer. This guide provides details about how to use the printer and to
resolve printer and printing problems.
This section contains the following information:
Finding other resources for the product
●
Accessibility
●
Understanding the printer parts
●
ENWW1
Finding other resources for the product
You can obtain product information and further troubleshooting resources that are not included in this
guide from the following resources:
ResourceDescriptionLocation
Setup poster
Getting started guide
Readme file and release notes
Embedded Web server (network
connection)
Toolbox (Microsoft® Windows®)
Provides illustrated setup information.A printed version of the document is
provided with the printer. Also, an
electronic version is available as an
®
Adobe
Acrobat® Portable Document
Format (PDF) document on the Starter
CD.
Provides instructions for setting up the
printer and information about the
warranty and safety issues.
Provide late-breaking information and
troubleshooting tips.
Allows you to view status information,
change settings, and manage the
printer from any computer on the
network.
See Embedded Web server.
Provides information about printhead
health and access to printer
maintenance services.
See
Toolbox (Windows).
Included as a printed guide in the box
with the printer.
Included on the Starter CD.
Available through any standard Web
browser.
The Toolbox is normally installed with
the printer software, if you choose an
installation option that includes it.
Printer-driver onscreen Help (Windows)
HP Printer Utility (Mac OS)The HP Printer Utility contains tools to
HP Instant SupportHelps you quickly identify, diagnose,
Control panelProvides status, error, and warning
Provides an explanation of the features
in the printer driver.
configure print settings, calibrate the
printer, clean the printheads, print the
configuration page of the printer, order
supplies online, and find support
information from the website. You can
also configure settings for wireless
printing.
See
HP Printer Utility (Mac OS).
and resolve printing problems.
See HP Instant Support.
information about printer operations.
Available from the printer driver.
The HP Printer Utility is normally
installed with the printer software.
Available through any standard Web
browser or through the Toolbox
(Windows).
See Printer lights reference.
2Chapter 1 Getting startedENWW
ResourceDescriptionLocation
Logs and reportsProvides information about events that
have occurred.
Configuration pageShows printer information (such as the
product name, model number, serial
number, and firmware version
number), the accessories that are
installed (such as the duplex unit), and
the number of pages printed from the
trays and accessories, as well as the
ink level information, and the printhead
health status. If the printer is connected
to a network, an additional network
configuration page is available.
Print quality diagnostic pageDiagnoses issues affecting the print
quality of the printer, and helps you
decide whether to run any
maintenance tools to improve the print
quality of your printouts.
HP websitesProvide the latest printer software, and
product and support information.
HP telephone supportLists information to contact HP. During
the warranty period, this support is
often free of charge.
See Monitor the printer.
See Understanding the configuration
page.
See To print the print quality diagnostic
page.
www.hp.com/support/officejetprok550
www.hp.com
See Obtaining HP telephone support.
ENWWFinding other resources for the product3
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 HP's commitment to product accessibility,
visit HP's Web site at
www.hp.com/accessibility.
For accessibility information for Macintosh operating systems, visit the Apple web site at
www.apple.com/disability.
4Chapter 1 Getting startedENWW
Understanding the printer parts
Front view
1Control panel
2Output tray
3Paper guides
4Tray 1
5Tray 2 (HP Officejet Pro K550dtn/K550dtwn)
6Ink cartridge cover
7Ink cartridges
8Printheads
9Printhead latch
10Top cover
ENWWUnderstanding the printer parts5
Control panel
For more information about interpreting control-panel lights, see Printer lights reference.
1Power button and light
2Configuration Page button
HP Officejet Pro K550dtn
HP Officejet Pro K550dtwn
3Cancel button
4Resume button and light
5Printhead lights
6Ink cartridge lights
6Chapter 1 Getting startedENWW
Back view
1USB host connector (connects to USB devices such as flash drives) (HP Officejet Pro K550dtwn)
2Network connector (HP Officejet Pro K550dtn/K550dtwn)
You can print on both sides of a sheet of paper automatically when the optional automatic two-sided
printing accessory (duplex unit) is installed on the printer. The duplex unit comes with the HP
Officejet Pro K550dtn and HP Officejet Pro K550dtwn printers. For information on using the duplex
unit, see
To install a duplex unit
1.Push the buttons on the rear access panel and remove the panel from the printer.
2.Slide the duplex unit into the printer until the unit locks into place. Do not press the buttons on
Printing on both sides (duplexing). See also Accessories for ordering information.
either side of the duplex unit when installing the unit; use them only for removing the unit from
the printer.
10Chapter 2 Installing the accessoriesENWW
Installing tray 2
Tray 2 can hold up to 350 sheets of plain paper. It comes with the HP Officejet Pro K550dtn and HP
Officejet Pro K550dtwn printers, and is an optional accessory for the HP Officejet Pro K550 printer.
Accessories for ordering information.
See
To install tray 2
1.Unpack the tray, remove the packing tapes and materials, and move the tray to the prepared
location. The surface must be sturdy, level, and located in a well-ventilated area. Allow space
around the printer, including 50 mm (2 inches) for ventilation.
2.Turn off the printer, and disconnect the power cord.
3.Set the printer on top of the tray.
CAUTIONBe careful to keep your fingers and hands clear of the bottom of the printer.
4.Connect the power cord and turn on the printer.
ENWWInstalling tray 211
12Chapter 2 Installing the accessoriesENWW
3Using the printer
This section provides information on media usage for the printer, changing print settings, and
performing basic printing tasks.
Selecting print media
●
Loading media
●
Configuring trays
●
Changing print settings
●
Canceling a print job
●
Printing on both sides (duplexing)
●
Printing on special and custom-sized media
●
ENWW13
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. Visit HP website
www.hp.com for details on HP media.
at
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
●
for supported media.
Load only one type of media at a time into a tray.
●
For tray 1 and tray 2, load media print-side down and aligned against the right and back edges of
●
the tray. See
Tray 2 is designed to hold only plain paper.
●
Do not overload the trays. See
●
●
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
●
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.
Loading media.
Understanding specifications for supported media.
Understanding specifications
Use tightly constructed envelopes, and make sure the folds are sharply creased.
●
Load envelopes into the printer with the flaps facing up.
●
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 may cause
●
smearing.
14Chapter 3 Using the printerENWW
Transparencies
Insert transparencies with the rough side down and the adhesive strip pointing towards the back
●
of the printer.
Use the Best mode to print transparencies. This mode provides longer drying time and ensures
●
that the ink dries completely before the next page is delivered to the output tray. Allowing wet
media to stack up may cause smearing.
Custom-sized media
Use only custom-sized media supported by the printer.
●
If your application supports custom-sized media, set the media size in the application before
●
printing the document. If not, set the size in the printer driver. You might need to reformat
existing documents to print them correctly on custom-sized media.
Understanding specifications for supported media
NOTETray 2 comes with the HP Officejet Pro K550dtn and HP Officejet Pro K550dtwn
printers.
Understanding supported sizes
Media sizeTray 1Tray 2
Standard paper sizes
U.S. Letter* (216 by 279 mm; 8.5 by 11 inches)
8.5 by 13 inches (216 by 330 mm; 8.5 by 13 inches)
U.S. Legal* (216 by 356 mm; 8.5 by 14 inches)
A4* (210 by 297 mm; 8.3 by 11.7 inches)
U.S. Executive* (184 by 267 mm; 7.25 by 10.5 inches)
U.S. Statement* (140 by 216 mm; 5.5 by 8.5 inches)
B5* (182 by 257 mm; 7.17 by 10.12 inches)
A5* (148 by 210 mm; 5.8 by 8.3 inches)
Envelopes
Duplex unit
U.S. #10 Envelope (105 by 241 mm; 4.12 by 9.5 inches)
Monarch Envelope (98 by 191 mm; 3.88 by 7.5 inches)
HP Greeting Card Envelope (111 by 152 mm; 4.38 by 6 inches)
ENWWSelecting print media15
Media sizeTray 1Tray 2
A2 Envelope (111 by 146 mm; 4.37 by 5.75 inches)
DL Envelope (110 by 220 mm; 4.3 by 8.7 inches)
C5 Envelope (162 by 229 mm; 6.4 by 9 inches)
C6 Envelope (114 by 162 mm; 4.5 by 6.4 inches)
Japanese Envelope Chou #3 (120 x 235 mm; 4.7 by 9.3 inches)
Japanese Envelope Chou #4 (90 x 205 mm; 3.5 by 8.1 inches)
Cards
Duplex unit
Index card* (3 by 5 inches; 76.2 by 127 mm)
Index card* (4 by 6 inches; 102 by 152 mm)
Index card* (5 by 8 inches; 127 by 203 mm)
A6 card* (4.13 by 5.83 inches; 105 by 148.5 mm)
Hagaki* (100 by 148 mm; 3.9 by 5.8 inches)
Ofuku Hagaki* (148 by 200 mm; 5.8 by 7.9 inches)
Photo media
Photo media* (3 by 5 inches; 76.2 by 127 mm)
Photo media* (4 by 6 inches; 102 by 152 mm)
Photo media with tear-off tab* (4 by 6 inches; 102 by 152 mm)
Photo media with tear-off tab* (4 by 8 inches; 102 by 203 mm)
Other media
Custom-sized media* between 3 to 8.5 inches wide and 5 to 14
inches long (76.2 to 216 mm wide and 127 to 356 mm long)*
* These media sizes support manual duplex. See Printing on both sides (duplexing).
16Chapter 3 Using the printerENWW
Understanding supported media types and weights
TrayTypeWeightCapacity
Tray 1Paper
TransparenciesUp to 70 sheets
Photo paper
LabelsUp to 100 sheets
Envelopes
Cards
Tray 2Plain paper only
60 to 105 g/m
2
(16 to 28 lb bond)
2
280 g/m
(75 lb bond)
75 to 90 g/m
2
(20 to 24 lb bond envelope)
Up to 200 g/m
2
(110 lb index)
60 to 105 g/m
2
Up to 250 sheets of plain paper
(25 mm or 1 inch stacked)
(17 mm or 0.67 inch stacked)
Up to 100 sheets
(17 mm or 0.67 inch stacked)
(17 mm or 0.67 inch stacked)
Up to 30 sheets
(17 mm or 0.67 inch stacked)
Up to 80 cards
Up to 350 sheets of plain paper
(35 mm or 1.38 inch stacked)
N.A.
Duplex unitPaper
(16 to 28 lb bond)
60 to 105 g/m
2
(16 to 28 lb bond)
Output trayAll supported
media
Up to 150 sheets of plain paper (text
printing)
Setting minimum margins
The document margins must match (or exceed) these margin settings in portrait orientation.
ENWWSelecting print media17
Media(1) Left margin(2) Right margin(3) Top margin(4) Bottom
margin*
U.S. Letter, U.S. Legal, A4, U.S.
Executive, U.S. Statement, 8.5 x 13
inch, B5, A5, cards, custom-sized
media, photo media
Envelopes16.5 mm (0.65
3.3 mm (0.13 inch) 3.3 mm (0.13 inch) 3.3 mm (0.13 inch) 3.3 mm (0.13 inch)
inch)
16.5 mm (0.65
inch)
3.3 mm (0.13 inch) 3.3 mm (0.13 inch)
* To achieve this margin setting on a computer running Windows, click the Effects tab in the printer
driver, and select Minimize Margins.
NOTEWhen you are using the duplex unit, the minimum top and bottom margins must
match or exceed 12 mm (0.47 inch).
18Chapter 3 Using the printerENWW
Loading media
This section provides instructions for loading media into the printer.
To load tray 1 or tray 2
1.Pull the tray out of the printer by grasping under the front of the tray.
2.For paper longer than 11 inches (279 mm), lift the front cover of the tray (see shaded tray part)
and lower the front of the tray.
3.Insert the paper print-side down along the right of the tray. Make sure the stack of paper aligns
with the right and back edges of the tray, and does not exceed the line marking in the tray.
NOTETray 2 can be loaded only with plain paper.
4.Slide the paper guides in the tray to adjust them for the size that you have loaded.
ENWWLoading media19
5.Gently reinsert the tray into the printer.
CAUTIONIf you have loaded legal-size or longer media, keep the front of the tray
lowered. Damage to the media or printer might result if you raise the front of the tray with
this longer media loaded.
6.Pull out the extension on the output tray.
20Chapter 3 Using the printerENWW
Configuring trays
By default, the printer draws media from tray 1. If tray 1 is empty, the printer draws media from tray 2
(if it is installed and loaded with media). You can change this default behavior using the following
features.
Tray Lock: Use this feature to protect special media such as letterhead or preprinted media from
●
accidental use. If the printer runs out of paper while printing a document, it will not use paper
from a locked tray to complete the print job.
Default Tray: Use this feature to determine the first tray from which the printer draws media.
●
NOTETo use the tray lock and default tray settings, you must select the automatic tray
selection option in the printer software. If the printer is on a network and you set a default tray,
the setting will affect all users of the printer.
Tray 2 is designed to hold only plain paper.
To configure the trays
1.Make sure the printer is turned on.
2.Perform one of the following:
a.Embedded Web server: Click the Settings tab and click Paper Handling in the left panel.
b. Printer driver (Windows): Click the Services tab. For Windows 2000, Windows XP, and
Windows Server 2003, click the Service this Device button (this option is available only if
the Toolbox is installed), and then click the Printer Services tab. Click Paper Handling.
c. Toolbox (Windows): Click the Printer Services tab and click Paper Handling.
d. HP Printer Utility (Mac OS): Click Trays Configuration from the Printer Settings panel.
3. Change the desired tray settings, and click OK or Apply.
The following table lists possible ways you can use the tray settings to meet your printing needs.
I want to...Follow these steps
Load both trays with the same media, and have the printer
pick media from one tray if the other one is empty.
Have both special media (such as transparencies or
letterhead) and plain paper loaded in the trays.
Load media in both trays but have the printer pick media
from a specific tray first.
1. Load media in tray 1 and tray 2. See Loading media.
2. Make sure tray lock is disabled.
1. Load special media in tray 1 and plain paper in tray 2.
2. Make sure tray lock is set to tray 1.
1. Load media in tray 1 and tray 2.
2. Make sure default tray is set to the desired tray.
ENWWConfiguring trays21
Changing print settings
You can change print settings (such as paper size or type) from an application or the printer driver.
Changes made from an application take precedence over changes made from the printer driver.
However, after the application is closed, the settings return to the defaults configured in the printer
driver.
NOTETo set print settings for all print jobs, make the changes in the printer driver.
For more information about the features of the Windows printer driver, see the online help of
the printer driver. For more information about printing from a specific application, see the
documentation of that application.
To change settings from an application for current jobs (Windows)
1. Open the document that you want to print.
2. On the File menu, click Print, and then click Setup, Properties, or Preferences. (Specific
options may vary depending on the application you are using.)
3. Change any desired settings, and click OK, Print, or a similar command.
To change default settings for all future jobs (Windows)
1. Click Start, point to Settings, and then click Printers or Printers and Faxes.
2. Right-click the printer icon, and then click Properties, Document Defaults, or Printing
Preferences.
3. Change any desired settings and click OK.
To change settings (Mac OS)
1. On the File menu, click Page Setup.
2. Change any desired settings (such as paper size) and click OK.
3. On the File menu, click Print to open the printer driver.
4. Change any desired settings (such as media type), and click OK or Print.
22Chapter 3 Using the printerENWW
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