Variable mode printing, Variable mode printing -2 – HP 0706124 REV B User Manual

Page 58

3-2

Variable Mode Printing

Variable Mode
Printing

The printer uses these techniques to vary the quality of a print
and speed of printing:

◆ Direction — for fastest print speed, the printheads fire ink

bidirectionally, when the carriage travels in both directions.
To reduce certain banding effects, the printheads can be set
to fire only when the carriage is moving to the left.

◆ High quality (HQ) — when enabled, reduces certain band-

ing effects.

◆ Color Set — ink sets may contain one each of a different

color, two each of a different color, varying densities of cer-
tain colors, or combinations. Using two sets of colors speeds
printing, while using multidensity inks creates smoother
transitions between light tones, and increases the perceived
resolution of the print.

◆ Jet Replacement — jets on the printhead that are misfiring or

not firing at all can be replaced with alternate jets. Ideally,
every pixel called for in a print is printed. In reality, some
pixels are not printed because the ink jets tend to become
partially or completely clogged with ink, which reduces print
quality. AutoJet mapping substitutes an otherwise unused jet
for a missing or deflected jet.

◆ Passes — number of times the printhead passes over a given

area of the image. A greater number of passes makes a
greater number of substitute jets available, but slows print-
ing speed.

Print quality (apparent resolution and smooth gradients) is
improved by:

◆ Increasing the number of passes (see “Selecting a Print

Mode” on page 3-7)

◆ Increasing the number of different ink colors (and/or

densities); see “Selecting a Print Mode” on page 3-7

◆ Printing in HQ mode (see “Selecting a Print Mode” on page

3-7)

◆ Printing unidirectionally (left only); see “Selecting a Print

Mode” on page 3-7

◆ Selecting “Do not print white space” under Configure