To find an answer to a question, select one of the following topics:
• Notices
• Special features
• Getting started
• Connecting to the printer
• Printing photos
• Printing other documents
• Printing tips
• Printer software
• Maintenance
• Troubleshooting
• Specifications
• Supplies
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HP Deskjet 3740 series printer User's Guide
2 Notices
• Notices and acknowledgements
• Terms and conventions
2.1 Notices and acknowledgements
Hewlett-Packard company notices
Reproduction, adaptation, or translation without prior written permission is
prohibited, except as allowed under the copyright laws.
The information contained herein is subject to change without notice.
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. HP shall not be liable
for technical or editorial errors or omissions contained herein.
Acknowledgements
Apple, the Apple logo, AppleTalk, ColorSync, the ColorSync logo, Finder, Mac,
Macintosh, MacOS, Powerbook, Power Macintosh, and Quickdraw are trademarks
of Apple Computer, Inc., registered in the U.S. and other countries.
TrueType is a U.S. trademark of Apple Computer, Inc.
Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
The following terms and conventions are used in the user's guide.
Terms
The HP Deskjet printer may be referred to as the HP printer or printer.
Cautions, warnings, and notes
A Caution indicates possible damage to the HP Deskjet printer or to other
equipment. For example:
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HP Deskjet 3740 series printer User's Guide
Caution: Do not touch the print cartridge ink nozzles or copper contacts.
Touching these parts will result in clogs, ink failure, and bad electrical
connections.
A Warning indicates possible harm to you or to others. For example:
Warning: Keep both new and used print cartridges out of the reach of
children.
A Note indicates that additional information is provided. For example:
Note: For great results use HP products.
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HP Deskjet 3740 series printer User's Guide
3 Special features
Congratulations! You have purchased an HP Deskjet printer that is equipped with
several exciting features:
• User friendly: Easy to install and operate.
• Borderless printing: Print 4 x 6 inch photos to the edges of the paper by using
the borderless printing feature.
• Ink level indicator: Know the approximate ink level of each print cartridge with
the onscreen ink level indicator.
• Ink-backup mode: Use Ink-backup mode to continue printing with one print
cartridge when the other print cartridge has run out of ink.
• Compact: Small, lightweight, and easy to set up, store, or carry.
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HP Deskjet 3740 series printer User's Guide
4 Getting started
For an overview of the printer features, see the printer features page.
Click the appropriate topic for a description of a printer feature:
• Power button and light
• Paper tray
• Print cartridges
• Ink-backup mode
4.1 Printer features
The printer has several features to make printing easier and more efficient.
1. Power button and light
2. Paper tray
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HP Deskjet 3740 series printer User's Guide
1. Print cartridges
1. USB port
4.2 Power button and light
The Power button turns the printer on and off. It can take a few seconds for the
printer to turn on after you press the Power button. The light on the Power button
flashes when the printer is processing a job.
1. Power button and light
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HP Deskjet 3740 series printer User's Guide
Caution: Always use the Power button to turn the printer on and off. Using
a power strip, a surge protector, or a wall-mounted switch to turn the printer
on and off can cause printer failure.
4.3 Paper tray
The fold-out paper tray holds paper and other media to be printed. Unfold the paper
tray before printing.
Unfolding the paper tray
Follow these steps to unfold the paper tray:
1. Raise the printer cover.
2. Lower the paper tray.
3. Fold out the tray extension.
4. Lower the printer cover.
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HP Deskjet 3740 series printer User's Guide
Using the paper tray
Print on different sizes of media by sliding the paper guide to the right or to the left.
The printer deposits printed pages on the top of the paper tray.
Note: The print cartridges must be installed before printing.
4.4 Print cartridges
Two print cartridges are available for use with the printer.
1. Tri-color print cartridge
2. Black print cartridge
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HP Deskjet 3740 series printer User's Guide
Replacing print cartridges
When buying print cartridges, look for the print cartridge selection number.
You can find the selection number in these places:
• Selection number label: Look at the label on the print cartridge that you are
replacing.
1. Selection number label
• Printer documentation: For a list of print cartridge selection numbers, see the
reference guide that came with the printer.
• HP Inkjet Toolbox: Open the HP Inkjet Toolbox, and then select the Supplies
panel.
If a print cartridge runs out of ink, the printer can operate in the ink-backup mode.
For information about installing a print cartridge, see the print cartridge installation
page.
4.5 Ink-backup mode
In the ink-backup mode, the printer operates by using only one print cartridge. The
ink-backup mode is initiated when a print cartridge is removed from the print
cartridge cradle.
For instructions about removing a print cartridge, see the print cartridge
installation page.
Ink-backup mode output
Printing in ink-backup mode slows the printer and affects the quality of printouts.
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HP Deskjet 3740 series printer User's Guide
Installed print cartridge Result
Black print cartridge.Colors are printed as grayscale.
Tri-color print cartridge. Colors print but black is grayed and is not a true black.
Exiting ink-backup mode
Install two print cartridges in the printer to exit the ink-backup mode.
For instructions about installing a print cartridge, see the print cartridge installation
page.
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HP Deskjet 3740 series printer User's Guide
5 Connecting to the printer
• USB
5.1 USB
The printer connects to the computer with a universal serial bus (USB) cable.
For instructions about connecting the printer with a USB cable, see the setup poster
that came with the printer.
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HP Deskjet 3740 series printer User's Guide
6 Printing photos
Select the type of photograph that you want to print:
Large photo with a white border Small photo with a white
border
Enhancing your photos
Learn how to enhance your photographs by using the printer's photo printing
features.
Small borderless photo
6.1 Enhancing your photos
The printer software offers several features to make printing digital photos easier
and improve photo quality:
• Use the HP digital photography options to touch up photos.
• Achieve the highest resolution with Maximum dpi.
• Use HP Everyday Photo Paper, Semi-gloss to save money and ink when
printing photos.
Learn how to add professional touches to your digital photographs:
• Print black-and-white photos.
• Print to the edges of the photo paper with borderless printing.
To prevent photo paper from curling, follow the photo paper storage guidelines.
6.2 HP digital photography options
The printer has several features to improve the quality of digital photographs.
Follow these steps to gain access to the Digital Photography panel.
1. Open the Print dialog box.
2. Select the Digital Photography panel.
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HP Deskjet 3740 series printer User's Guide
Description
Use the Digital Photography panel to set these options:
1. Options Menu: Select from the following options:
• Digital Flash: Lighten dark images. Click Automatic to allow the printer
driver to automatically balance lightness and darkness.
• Contrast enhancement: Adjust the contrast to your preference. Click
Automatic to allow the printer driver to automatically balance the contrast.
• SmartFocus: Enhance image quality and clarity. Click On to allow the
printer driver to automatically sharpen details in the image.
• Smoothing: Soften an image. Click Automatic to allow the printer driver to
automatically set the level of smoothing for the image.
• Sharpness: Adjust the image sharpness to your preference. Click
Automatic to allow the printer driver to automatically set the level of
sharpening for the image.
2. Set All Settings Menu: Select from the following settings options:
• Turn All Off: Turns off all the digital photography options.
• Set All to Automatic: Sets all the digital photography options to Automatic.
• Use Factory Presets: Sets all the digital photography options to a set of
predefined print options.
6.3 Maximum dpi
The Maximum dpi print quality setting offers 4800 x 1200 optimized dpi printing.
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HP Deskjet 3740 series printer User's Guide
The 4800 x 1200 optimized dpi print mode is the highest quality resolution for this
printer. When 4800 x 1200 optimized dpi is selected in the printer driver, the tri-color
print cartridge prints in the 4800 x 1200 optimized dpi mode (up to 4800 x 1200
optimized dpi color and 1200-input dpi).
Follow these steps to print in the 4800 x 1200 optimized dpi mode:
1. Open the Print dialog box.
2. Select the Paper Type/Quality panel.
3. In the Print Quality drop-down list, click Maximum dpi.
4. Select any other print settings that you want, and then click Print.
6.4 Printing black-and-white photos
You can perform the following tasks with the printer:
• Print a black-and-white photo
• Print a color photo in black-and-white
Printing a black-and-white photo
To print a photo that is already black and white, simply follow the instructions for the
type and size of photo that you want to print.
Printing a color photo in black and white
Follow these steps to print a color photo in black and white:
1. Open the Print dialog box.
2. Select the Color panel.
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HP Deskjet 3740 series printer User's Guide
3. In the Image drop-down list, click Grayscale.
4. Click the High Quality option.
5. Select any other print settings that you want, and then click Print.
6.5 Storing and handling photo paper
Follow these instructions to maintain the quality of your HP brand photo paper.
Storage
• Keep unused photo paper in a resealable plastic bag, in the box in which it was
originally packaged. Store the packaged photo paper on a flat surface in a cool
place.
• When you are ready to print, remove only the paper that you plan to use
immediately from the plastic bag. When you have finished printing, return any
unused photo paper to the plastic bag.
• Do not leave unused photo paper in the printer paper tray. The paper might
start to curl, which can reduce the quality of your photographs.
Handling
• Always hold photo paper by its edges. Fingerprints on photo paper can reduce
print quality.
• Verify that the photo paper is not curled. If the photo paper is curled, place the
paper in a plastic bag and gently bend it the opposite direction of the curl until
the paper lies flat. If the problem persists, use photo paper that is not curled.
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HP Deskjet 3740 series printer User's Guide
6.6 Saving money when printing photos
HP Everyday Photo Paper
To save money and ink when printing photos, use HP Everyday Photo Paper, Semigloss and set the Print quality to Normal.
HP Everyday Photo Paper, Semi-gloss is designed to create quality photos with less
ink.
Note: For higher-quality photos, use HP Premium Plus Photo paper and set the
Print quality to Best or Maximum dpi.
6.7 Large photos with a white border
Guidelines
• To learn how to use the photo printing features, see the photo enhancing page.
• Use HP Everyday Photo Paper, Semi-gloss to save money and ink when
printing photos.
• Verify that the photo paper that you are using is flat. For information about
preventing photo paper from curling, see the photo paper storage instructions.
• Do not exceed the paper tray capacity: Up to 15 sheets.
Preparing to print
1. Slide the paper guide to the left.
2. Place the paper with the side to be printed on facing down in the tray, and then
push it into the printer until it stops.
The paper will extend over the edge of the tray.
3. Slide the paper guide firmly against the edge of the paper.
Printing
1. Open the Page Setup dialog box, and then select the following settings:
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HP Deskjet 3740 series printer User's Guide
• Paper Size: The appropriate paper size
• Orientation: The appropriate orientation
2. Click OK.
3. Open the Print dialog box.
4. Select the Paper Type/Quality panel, and then select the following settings:
• Paper Type: Scroll down and select Photo paper, and then click the
appropriate paper type.
• Print Quality: Best or Maximum dpi.
5. If you want to use them, set the HP digital photography options.
6. Select any other print settings that you want, and then click Print.
6.8 Small photos with a white border
Guidelines
• To learn how to use the photo printing features, see the photo enhancing page.
• Use HP Everyday Photo Paper, Semi-gloss to save money and ink when
printing photos.
• Verify that the photo paper that you are using is flat. For information about
preventing photo paper from curling, see the photo paper storage instructions.
• Do not exceed the paper tray capacity: Up to 15 sheets.
Preparing to print
1. Slide the paper guide to the left.
2. Place the photo paper, with the side to be printed on facing down and the short
edge pointing towards the printer, in the right side of the tray. Push the paper
into the printer until it stops.
3. Slide the paper guide firmly against the edge of the paper.
Printing
1. Open the Page Setup dialog box, and then select the following settings:
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HP Deskjet 3740 series printer User's Guide
• Paper Size: The appropriate paper size
• Orientation: The appropriate orientation
2. Click OK.
3. Open the Print dialog box.
4. Select the Paper Type/Quality panel, and then select the following settings:
• Paper Type: Scroll down and select Photo paper, and then click the
appropriate paper type.
• Print Quality: Best or Maximum dpi.
5. If you want to use them, set the HP digital photography options.
6. Select any other print settings that you want, and then click Print.
6.9 Borderless photos
Guidelines
• To print borderless photos, use 4 x 6 inch photo paper with a 0.5 inch tab (10
x 15 cm with 1.25 cm tab); the photo prints without borders on three sides and
with a small border on the bottom edge that you tear off to make the photo
completely borderless.
• To learn how to use the photo printing features, see the photo enhancing page.
• Use HP Everyday Photo Paper, Semi-gloss to save money and ink when
printing photos.
• Verify that the photo paper that you are using is flat. For information about
preventing photo paper from curling, see the photo paper storage instructions.
• Do not print borderless photos in ink-backup mode. Always have two print
cartridges installed in the printer.
• Open the file in a software program and assign the image size. Ensure that the
size corresponds to the paper size on which you want to print the image.
• Do not exceed the paper tray capacity: Up to 15 sheets.
Preparing to print
1. Slide the paper guide to the left.
2. Place the photo paper, with the side to be printed on facing down and the short
edge pointing towards the printer, in the right side of the tray. If you are using
photo paper that has a tear-off tab, verify that the tab is pointing away from the
printer. Push the paper into the printer until it stops.
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HP Deskjet 3740 series printer User's Guide
3. Slide the paper guide firmly against the edge of the paper.
Printing
1. Open the Page Setup dialog box, and then select the following settings:
• Paper Size: The appropriate borderless paper size
• Orientation: The appropriate orientation
2. Click OK.
3. Open the Print dialog box.
4. Select the Paper Type/Quality panel, and then select the following settings:
• Paper Type: Scroll down and select Photo paper, and then click the
appropriate paper type.
• Print Quality: Best or Maximum dpi.
5. If you want to use them, set the HP digital photography options.
6. Select any other print settings that you want, and then click Print.
When you print on 4 x 6 inch photo paper with tear-off tabs, the printout is
completely borderless after the tear-off strip is removed.
When you print on 4 x 6 inch photo paper without tear-off tabs, the printout is
borderless on three sides and has a border on the bottom.
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HP Deskjet 3740 series printer User's Guide
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HP Deskjet 3740 series printer User's Guide
7 Printing other documents
E-mailLettersDocumentsEnvelopes
LabelsBrochuresGreeting cards Transparencies
Index cards Iron-on transfers
Printing tips
Minimize your cost and effort while maximizing the quality of your printouts by using
these printing tips.
Printer software
Learn about the printer software.
7.1 E-mail
Guidelines
Do not exceed the paper tray capacity: Up to 80 sheets.
Preparing to print
1. Slide the paper guide to the left.
2. Place the paper with the side to be printed on facing down in the tray, and then
push it into the printer until it stops.
The paper will extend over the edge of the tray.
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HP Deskjet 3740 series printer User's Guide
3. Slide the paper guide firmly against the edge of the paper.
Printing
1. If necessary, open the Page Setup dialog box and set the paper size and
orientation options.
2. Open the Print dialog box.
3. Select the Paper Type/Quality panel, and then specify the following settings:
• Paper Type: The appropriate paper type
• Print Quality: Normal
4. Select any other print settings that you want, and then click Print.
7.2 Letters
Guidelines
• For help printing on an envelope, see the envelopes page.
• Do not exceed the paper tray capacity: Up to 80 sheets.
Preparing to print
1. Slide the paper guide to the left.
2. Place the paper with the side to be printed on facing down in the tray, and then
push it into the printer until it stops.
The paper will extend over the edge of the tray.
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HP Deskjet 3740 series printer User's Guide
3. Slide the paper guide firmly against the edge of the paper.
Printing
1. If necessary, open the Page Setup dialog box and set the paper size and
orientation options.
2. Open the Print dialog box.
3. Select the Paper Type/Quality panel, and then specify the following settings:
• Paper Type: The appropriate paper type
• Print Quality: Normal or Best
4. Select any other print settings that you want, and then click Print.
7.3 Documents
Guidelines
• Do not exceed the paper tray capacity: Up to 80 sheets.
Preparing to print
1. Slide the paper guide to the left.
2. Place the paper with the side to be printed on facing down in the tray, and then
push it into the printer until it stops.
The paper will extend over the edge of the tray.
3. Slide the paper guide firmly against the edge of the paper.
Printing
1. If necessary, open the Page Setup dialog box and set the paper size and
orientation options.
2. Open the Print dialog box.
3. Select the Paper Type/Quality panel, and then specify the following settings:
• Paper Type: The appropriate paper type
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