Epson SP4900DES ユーザーズマニュアル
Correcting Print Misalignment
(Print Head Alignment)
(Print Head Alignment)
Because there is a small distance between the print head
and paper, misalignment may occur due to humidity or
temperature, the inertial force of the print head's
movements, or by moving the print head
bidirectionally. As a result, print results may appear
grainy or out of focus. When this happens, perform
Head Alignment to correct the print misalignment.
and paper, misalignment may occur due to humidity or
temperature, the inertial force of the print head's
movements, or by moving the print head
bidirectionally. As a result, print results may appear
grainy or out of focus. When this happens, perform
Head Alignment to correct the print misalignment.
Although Head Alignment can be performed from the
computer or the printer, the alignment procedures
differ as explained below.
computer or the printer, the alignment procedures
differ as explained below.
❏ From the printer
You can adjust automatically or manually after
specifying the number of printed colors, and
whether it should be printed bidirectionally or
unidirectionally.
specifying the number of printed colors, and
whether it should be printed bidirectionally or
unidirectionally.
In auto adjustment, the sensor reads the adjustment
pattern while it is printing, and automatically
registers the optimum adjustment value to the
printer.
pattern while it is printing, and automatically
registers the optimum adjustment value to the
printer.
In manual adjustment, you need to check the
pattern and enter the optimum adjustment value
for alignment.
pattern and enter the optimum adjustment value
for alignment.
There are four types of adjustment pattern.
Uni-D
: Use all ink colors except Cyan to
align the print head
unidirectionally with reference to
Cyan.
unidirectionally with reference to
Cyan.
Bi-D 5-Color : Use Vivid Magenta, Black, Orange,
Light Light Black, and Light Cyan
ink colors to align the print head
bidirectionally.
ink colors to align the print head
bidirectionally.
Either Matte Black or Photo Black
ink is used for black based on the
type of black ink currently selected
in the printer.
ink is used for black based on the
type of black ink currently selected
in the printer.
Bi-D 2-Color : Use Cyan and Vivid Magenta ink
colors to align the print head
bidirectionally.
bidirectionally.
Bi-D All
: Use all ink colors to align the print
head bidirectionally.
❏ From the computer
Auto adjust with Bi-D 5-Color.
In most cases, head alignment can be performed
successfully with just this operation. We normally
recommend adjusting from the computer as this is
the simplest method. However, if the results of the
adjustment are not satisfactory, make adjustments
from the printer.
successfully with just this operation. We normally
recommend adjusting from the computer as this is
the simplest method. However, if the results of the
adjustment are not satisfactory, make adjustments
from the printer.
Tip:
Head Alignment is performed according to the width of
the loaded paper. We recommend adjusting for the paper
you are going to use.
Head Alignment is performed according to the width of
the loaded paper. We recommend adjusting for the paper
you are going to use.
From the computer
Explanations in this section use the Windows printer
driver as an example.
driver as an example.
Use Epson Printer Utility 4 for Mac OS X.
U
A
Make sure that the roll paper or a cut sheet of A4
size or larger is loaded in the printer.
size or larger is loaded in the printer.
Make sure you set the paper source and media
type correctly according to the paper you use.
type correctly according to the paper you use.
Epson Stylus Pro 4900/4910 User's Guide
Maintenance
117