Sharp MX-6500N / MX-7500N Handy Guide ▷ View online
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Caution:
If the value is set to too high, ghost image of single
color may appear.
If the value is set to too low, the density may become
too low.
3) Tap [Register] key to register the setting.
Note:
To reset all items to [0], tap the [Return Entered
Values to Zero] key.
1.4.2 Secondary Transfer Current Value Setting
Modes the adjustment is effective in:
Copy and printer modes
Overview:
This performs toner transfer adjustment by fine tuning
secondary transfer current value.
Symptoms that may be alleviated by the adjustment:
Image shift and misalignment with specific paper
Patchy image caused by high-humidity environment
or patterned indented surface (such as embossed
paper).
Adjustment Procedure:
1) Select [Secondary Transfer Current Value Setting] in
the Transfer screen.
2) Select the color to adjust and enter the desired value.
Example of Secondary Transfer Current Value Setting
screen
Input range: [-20] to [20]
Default: [0] for each
Note:
If misalignment or a disordered image occur due to
the paper or a special type of media (highly resistive
paper such as laminated and transparency),
decreasing the value may improve the image.
If patchiness occurs due to usage in a high humidity
environment or due to paper with an uneven surface
such as embossed paper, increasing the value may
improve the image.
3) Tap the [Register] key to register the setting.
Note:
To reset all items to [0], tap the [Return Entered
Values to Zero] key.
1.4.3 PTC Current Value Setting
Modes the adjustment is effective in:
Copy and printer modes
Overview:
This performs toner transfer adjustment by fine tuning PTC
current value.
Symptoms that may be alleviated by the adjustment:
When the image is distorted by the use of a large
embossed paper (not by temperature or humidity),
distortion may be improved by increasing the value.
Adjustment Procedure:
1) Select [PTC Current Value Setting] in the Transfer
screen.
2) Select the color to adjust and enter the desired value.
Input range: [-30] to [30]
Default: [0] for each
3) Tap the [Register] key to register the setting.
3) Tap the [Register] key to register the setting.
Note:
To reset all items to [0], tap the [Return Entered
Values to Zero] key.
1.5
Image Quality Adjustment
Select [Image Quality Adjustment] in the Image Quality
Adjustment screen.
1.5.1 Copy Color Balance Adjustment
Modes the adjustment is effective in:
Copy mode
Overview:
This enables adjustment of gradation density for printing in
copy mode by measuring test patch visually.
Symptoms that may be alleviated by the adjustment:
Adjustment is possible for each color and each density
range, and thus in addition to settings such as “Lighter
overall” or “Bluish overall”, fine adjustment such as
“Darken only low-density magenta parts” is possible.
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Adjustment Procedure:
1) Select [Copy Color Balance Adjustment] in the Image
Quality Adjustment screen.
2) To start the adjustment, tap the [Execute] key in the
Copy Color Balance Adjustment screen.
3) An adjustment pattern is printed.
Density Point 1 indicates the patches of the lowest density
for each color, Density Point 2 indicates the patches of the
second lowest density, and Density Point 17 indicates the
patches of the highest density. If you increase the
density correction value, the density of the corresponding
patch will be higher and density around the patch will also
be higher in regular prints.
Note:
The patches for “mix” are adjusted by factory to be a
little reddish so that color balance in regular copy and
print will be in good color balance (not meaning regular
gray print will be a little reddish)
4) Referring to the adjustment pattern, select the color
and density point to adjust. Enter the desired value and
then tap the [Execute] key.
Example of the Copy Color Balance Adjustment screen
Note:
It is recommended to change adjustment value to 450
or 550 at first.
To change the density points separately
The density points can be specified separately.
Input range: [1] to [999]
Default: [500] for each
To change all density points at once
The density points can be also specified all at once
by
checking the [Set in a Batch] checkbox.
Input range: [1] to [999]
The [Set in a Batch] checkbox is not checked by default.
When this checkbox is checked, the value [500]
appears in the textbox.
Note:
When the [Set in a Batch] checkbox is checked,
Density Points 1-17 are grayed out. When this
checkbox is not checked, the textbox for [Set in a
Batch] is not active. (A beep sounds when the textbox
is tapped.)
5) After adjustment, tap the [Execute] button again,
print a print pattern, and check the results of
adjustment.
You will return to the Image Quality Adjustment
screen.
Note:
To return your preferences to the factory defaults, tap
the [Return Copy Color Balance Adjustment Value to
Default.] key. When a confirmation message appears,
tap the [OK] key. Your preferences are returned to the
factory defaults and the screen returns to the Image
Quality Adjustment screen.
Example:
If gray color is a little lean to cyan, changing each value of
C from the default value toward up to 450 may improve the
color.
1.5.2 Printer Color Balance Adjustment
Modes the adjustment is effective in:
Printer mode
Overview:
This enables adjustment of gradation density for printing in
printer mode by measuring test patch visually.
Symptoms that may be alleviated by the adjustment:
Adjustment is possible for each color and each density
range, and thus in addition to settings such as “Lighter
overall” or “Bluish overall”, fine adjustment such as
“Darken only low-density magenta parts” is possible.
Adjustment Procedure:
1) Select [Printer Color Balance Adjustment] in the Image
Quality Adjustment screen.
Low density
High density
mix K C M Y
Density Point 17
Density Point 1
………
……
……
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2) To start the adjustment, tap the [Execute] key in the
Printer Color Balance Adjustment screen.
3) An adjustment pattern is printed.
Density Point 1 indicates the patches of the lowest density
for each color, Density Point 2 indicates the patches of the
second lowest density, and Density Point 17 indicates the
patches of the highest density. If you increase the
density correction value, the density of the corresponding
patch will be higher and density around the patch will also
be higher in regular prints.
Note:
The patches for “mix” are adjusted by factory to be a
little reddish so that color balance in regular copy and
print will be in good color balance (not meaning regular
gray print will be a little reddish)
4) Referring to the adjustment pattern, select the color
and density point to adjust. Enter the desired value and
then tap the [Execute] key.
Example of the Printer Color Balance Adjustment screen
Note:
It is recommended to change adjustment value to 450
to 550 at first.
To change the density points separately
The density points can be specified separately.
Input range: [1] to [999]
Default: [500] for each
To change all density points at once
The density points can be also specified all at once
by
checking the [Set in a Batch] checkbox.
Input range: [1] to [999]
The [Set in a Batch] checkbox is not checked by default.
When this checkbox is checked, the value [500]
appears in the textbox.
Note:
When the [Set in a Batch] checkbox is checked,
Density Points 1-17 are grayed out. When this
checkbox is not checked, the textbox for [Set in a
Batch] is not active. (A beep sounds when the textbox
is tapped.)
5) When adjustment is completed, you will return to the
Image Quality Adjustment screen.
After adjustment, tap the [Execute] button again, print
a print pattern, and check the results of adjustment.
Note:
To return your preferences to the factory defaults, tap
the [Return Printer Color Balance Adjustment Value
to Default.] key. When a confirmation message
appears, tap the [OK] key. Your preferences are
returned to the factory defaults and the screen returns
to the Image Quality Adjustment screen.
1.5.3 Standard Calibration
Modes the adjustment is effective in:
Copy and printer modes
Overview:
This performs gradation density for printing in copy and
printer modes automatically. It is possible to perform
adjustment for copy and printer modes separately.
This function uses the scanner to adjust color balance.
Symptoms that may be alleviated by the adjustment:
Case that you want to improve color tone in copy and
printer modes
Note:
・
・
When this adjustment is performed, the values set in
Copy Color Balance Adjustment (1.5.1) / Printer Color
Balance Adjustment (1.5.2) will be cleared.
To perform calibration without clearing those values,
perform Color Calibration in System settings.
・
When [1.5.4 Copy Calibration by Dither Pattern] or
[1.5.5] Printer Calibration by Dither Pattern] is to be
performed, this adjustment is not necessary.
Adjustment Procedure:
1) Select [Standard Calibration] in the Image Quality
Adjustment screen.
Low density
High density
mix K C M Y
Density Point 1
Density Point 17
………
……
……
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2) To print a test patch, select the desired calibration and
tap the [Execute] key in the Standard Calibration
screen.
Copy calibration checkbox*:
When this checkbox is checked and the [Execute]
key is tapped, copy calibration is executed.
Printer calibration checkbox *:
When this checkbox is checked and the [Execute]
key is tapped, printer calibration is executed.
Note:
When both of [Copy Calibration] and [Printer
Calibration] are checked, copy calibration is first
executed and then printer calibration.
3) When the [Execute] key is tapped, the checked
calibration starts.
4) A test patch is printed.
Note:
When the printing of a test patch fails, the following
message appears: Printing test patch has failed. Use
8 1/2" X 11" or A4 paper for this adjustment. Press
[Execute] to print the test patch.
5) Place the test patch printer in step 4) on the document
glass(the thin line at the edge of the page is to the left).
Lay copy paper (about five sheets) that is the same
size as the test patch on top of the placed test patch,
gently close the automatic document feeder, and tap
the [Execute].
Note:
When the scanning of the test patch fails, the
following message appears: Auto adjustment has
failed. Please check if the test patch is properly set on
the document glass. Press [Execute] to resume
scanning.
6) When the calibration is completed, a completion
message appears. The completion message varies
depending on the calibration that has been executed.
To return to the Image Quality Adjustment screen, tap
the [Back] key.
When both of [Copy Calibration] and [Printer
Calibration] are executed, tap the [Execute] key to
move on to the execution of Printer Calibration.
Repeat the step 4) to 6) for Printer Calibration.
1.5.4 Copy Calibration by Dither Pattern
Modes the adjustment is effective in:
Copy mode
Overview:
This performs gradation density for printing in copy mode
for each dither pattern.
The scanner can be used to perform fine adjustment of the
copying color balance of each screen.
Symptoms that may be alleviated by the adjustment:
Case that you want to improve color tone for specific
screen in copy mode
Adjustment Procedure:
1) Select [Copy Calibration by dither pattern] in the Image
Quality Adjustment screen.
2) To start copy calibration by screen, tap the [Execute]
key in the Copy Calibration by dither pattern screen.
3) A test patch is printed.
Note:
When the printing of a test patch fails, the following
message appears: Printing test patch has failed. Use
8 1/2" X 11" or A4 paper for this adjustment. Press
[Execute] to print the test patch.
4) Place the printed test patch on the document glass and
tap [Execute] to start the auto adjustment.
Place the test patch in portrait orientation.
Note:
When the scanning of the test patch fails, the
following message appears: Auto adjustment has
failed. Please check if the test patch is properly set on
the document glass. Press [Execute] to resume
scanning.
5) When the adjustment is completed, the dither pattern
selection screen appears.
Example of Copy Calibration by dither pattern screen.
6) Select the desired dither pattern and tap the [Execute]
key to start calibration by screen.
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