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Ink-backup mode – HP 3900 series User Manual

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1 Selection number label

Printer documentation: For a list of print cartridge selection numbers, see the
reference guide that came with the printer.

Print Cartridge Ordering Information dialog box: For a list of print cartridge
selection numbers, open the printer

Toolbox

, click the Estimated Ink Levels tab,

and then click the Print Cartridge Information button.

If a print cartridge runs out of ink, the printer can operate in

ink-backup mode

.

For information about installing a replacement print cartridge, see the

print cartridge

installation

page.

Ink-backup mode

Use the ink-backup mode to operate the printer with only one print cartridge. The ink-
backup mode is initiated when a print cartridge is removed from the print cartridge
cradle.

Ink-backup mode output
Printing in ink-backup mode slows the printer and affects the quality of printouts.

Installed print cartridge

Result

Black print cartridge

Colors print as grayscale.

Tri-color print cartridge

Colors print but black is grayed and is
not a true black.

Exit ink-backup mode
Install two print cartridges in the printer to exit ink-backup mode.
For instructions about installing a print cartridge, see the

print cartridge installation

page.

User's guide

9

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