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Model
MX-4140N MX-4141N MX-5140N MX-5141N (serv.man7)
Pages
127
Size
75.34 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Service Manual Revised June 2014.
File
mx-4140n-mx-4141n-mx-5140n-mx-5141n-sm7.pdf
Date

Sharp MX-4140N / MX-4141N / MX-5140N / MX-5141N (serv.man7) Service Manual ▷ View online

MX-5141N  ADJUSTMENTS AND SETTINGS  5 – 74
4)
Press [EXECUTE] key.
The color balance and the density are automatically adjusted.
The adjustment pattern is printed out. Check it for any abnor-
mality.
5)
Press [OK] key.
The list of the adjustment items (for each dither) is displayed.
6)
Select an adjustment item (for each dither).
*1: When performing adjustments in the heavy paper mode, 
load paper in the manual paper feed tray. 
7)
Press [EXECUTE] key.
A4/11" x 8.5" or A3/11" x 17" paper is automatically selected.
The patch image (adjustment pattern) is printed out.
In the monochrome mode, only the monochrome pattern is
printed.
8)
Set the patch image (adjustment pattern) printed in the proce-
dure 7) on the document table so that the thin lines on the
printed patch image (adjustment pattern) are on the left side.
Place 5 sheets of white paper on the printed patch image
(adjustment pattern).
9)
Press [EXECUTE] key.
The color balance and the density are automatically adjusted,
and the machine goes to the state of procedure 6).
To complete the adjustment and enable the adjustment result,
press [OK] key.
10) Make a copy, and check the copy image quality.
(Refer to the item of the printer color balance and density
check.)
NOTE: Use SIM46-52 to reset the adjustment values to the default
values.
Select item 
(Mode/Image)
Content
Heavy Paper *
1
Adjustment item to improve the color balance in the 
heavy paper mode
Black Edge
Adjustment item (K) to improve the reproduction of lines, 
text density, and thickness
Color Edge
Adjustment item (Color) to improve the reproduction of 
lines, text density, and thickness
B/W
Adjustment item to improve the density and gradation in 
the monochrome text mode and the map mode.
Color Ed
Adjustment item to improve the color balance in the text 
mode and the map mode.
B/W 600dpi
Adjustment item to improve the density and gradation in 
the monochrome printed photo mode and the 
photography mode.
WOVEN1
Adjustment item when adjusting the watermark density 
in the watermark mode 1
WOVEN2
Adjustment item when adjusting the watermark density 
in the watermark mode 2
WOVEN3
Adjustment item when adjusting the watermark density 
in the watermark mode 3
WOVEN4
Adjustment item when adjusting the watermark density 
in the watermark mode 4
MX-5141N  ADJUSTMENTS AND SETTINGS  5 – 75
 
11-D
(17) 
Dropout color adjustment 
(Normally not required)
a. General
This adjustment is used to adjust the range of reproduction of color
document images as monochrome images in the image send mode
(monochrome manual text mode).
In other words, it is used to adjust the level of chroma of color
images which are reproduced as monochrome images.
This adjustment must be performed in the following cases:
* When there is request from the user.
b. Adjustment procedures
1)
Enter the SIM 46-55 mode.
2)
Enter the adjustment value with 10-key and press [OK] key.
When the adjustment value is increased, colors dropout
becomes easy to narrow the reproduction range. When the
adjustment value is decreased, color dropout becomes difficult
to widen the reproduction range.
3)
Scan the document in the image send mode (monochrome
manual text mode) and check the adjustment result.
Effect and adverse effect when decreasing the value
[Effect]
When black characters are fainted by color shift, etc, the black area
is outputted clearly.
[Adverse effect]
Dropout of color sections becomes difficult.
Effect and adverse effect when increasing the value
[Effect]
Colors (of low chroma) which are difficult to be dropped out can be
dropped out.
[Adverse effect]
Black characters are fainted or cracked.
Item/Display
Content
Setting 
range
Default 
value
A
CHROMA
Dropout color range adjustment
0 - 6
3
SIM value 3
(Default)
SIM value 6
(Maximum value)
SIM value 0
(Minimum value)
The reproduction range is widened. 
The reproduction range is narrowed. 
When black characters 
are fainted,
Document
Decrease the adjustment value.
When the color section is not 
dropped out,
Increase the value. 
Reproduced 
image
Color dropout
MX-5141N  ADJUSTMENTS AND SETTINGS  5 – 76
 
11-D
(18) 
Watermark adjustment 
(Normally not required)
a. General
This adjustment is used to adjust the reproduction capability of the
watermark in the copy/printer mode.
This adjustment is used for watermark documents (primary output).
The result of this adjustment affects the result of watermark print
(secondary output).
In the printer mode, the watermark density can be adjusted by the
printer driver. That adjustment is based on the result of this adjust-
ment.
This adjustment must be performed in the following cases:
* When there is request from the user. (When a satisfactory result
is not obtained from the adjustment in the system setting mode.)
* When there is request from the user. (When a satisfactory result
is not obtained from the adjustment with the printer driver.)
b. Adjustment procedures
1)
Enter the SIM 46-66 mode.
2)
Select the PATTERN mode, then select an adjustment item in
the following list according to the situation.
NOTE: Normally there is no need to adjust the PATTERN mode
(items K and L), the COPY MODE, and the POSITION
mode.
Item/Display
Content
Setting 
range
Default 
value
Description
NOTE
A
WOVEN DEN BK LOW
Watermark density level 
(Color: Black / Adjustment for light 
images)
0 - 255
15
The adjustment value is changed to increase or 
decrease the density of the watermark of 
background documents (primary output).
To increase the watermark density, increase the 
adjustment value.
To decrease the watermark density, decrease the 
adjustment value.
NOTE:
When the adjustment value is increased, 
the watermark area which is originally not 
reproduced becomes difficult to disappear.
When the adjustment value is decreased, 
the watermark area which is originally 
reproduced becomes easy to disappear.
B
WOVEN DEN BK MIDDLE
Watermark density level 
(Color: Black, Density: Standard)
0 - 255
19
C
WOVEN DEN BK HIGH
Watermark density level 
(Color: Black, Density: Dark)
0 - 255
23
D
WOVEN DEN C LOW
Watermark density level 
(Color: Cyan / Adjustment for light 
images)
0 - 255
19
E
WOVEN DEN C MIDDLE
Watermark density level 
(Color: Cyan, Density: Standard)
0 - 255
23
F
WOVEN DEN C HIGH
Watermark density level 
(Color: Cyan, Density: Dark)
0 - 255
27
G
WOVEN DEN M LOW
Watermark density level 
(Color: Magenta / Adjustment for 
light images)
0 - 255
15
H
WOVEN DEN M MIDDLE
Watermark density level 
(Color: Magenta, Density: 
Standard)
0 - 255
18
I
WOVEN DEN M HIGH
Watermark density level 
(Color: Magenta, Density: Dark)
0 - 255
21
J
CONTRAST
Contrast adjustment
0 - 255
2
This is used to adjust the variation in the watermark 
density when the adjustment value of the watermark 
print/contrast adjustment in the system setting is 
changed by 1.
When this value is increased, the variation is also 
increased. When the value is decreased, the 
variation is also decreased.
When the adjustment value is 0, the result of the 
contrast adjustment is not reflected. 
(* The adjustment value must be set to 1 or greater.)
K
HT TYPE (POSI)
For half-tone index watermark type 
positive
42 - 43
42
To reproduce the containing characters of watermark 
copy (secondary output) more clearly, set to 43.
In that case, however, the containing characters of 
the watermark document (primary output) can be 
easily reproduced.
Normally 
set to the 
default.
L
HT TYPE (NEGA)
For half-tone index watermark type 
negative
42 - 43
42
To reproduce the containing characters of watermark 
copy (secondary output) more clearly, set to 43.
In that case, however, the containing characters of 
the watermark document (primary output) can be 
easily reproduced.
MX-5141N  ADJUSTMENTS AND SETTINGS  5 – 77
Changing adjustment values of adjustment items A - I and
trade off
3)
Enter the adjustment value with 10-key and press [OK] key.
4)
Make a copy, and check the adjustment result.
Descriptions on the watermark
Kinds of 
watermarks 
(Mode 
selected in 
the watermark 
copy mode)
Density 
value
Adjustment 
values of 
adjustment 
items A - I
Effect
Characters 
appearing.
Decrease.
The adjustment 
value is 
decreased.
The watermark images 
become easy to 
disappear.
The containing 
characters become 
lighter. 
Increase.
The adjustment 
value is 
increased.
The containing 
characters become 
darker.
The watermark images 
become difficult to 
disappear.
Background 
appearing.
Decrease.
The adjustment 
value is 
decreased.
The containing 
characters become easy 
to disappear.
The watermark images 
become easy to 
disappear.
Increase.
The adjustment 
value is 
increased.
The watermark images 
become darker.
The containing 
characters become 
difficult to disappear.
Document 
(Copy document or
Print data)
Watermark document 
(Primary output) 
(Copy or Printer output) 
(This machine)
Watermark copy 
(Secondary output) 
(This machine or other 
company's machine)
Copy / Print
Copy
COPY INHIBITED
COPY INHIBITED
COPY INHIBITED
Containing
characters
Watermark 
color
The watermark color is available in Cyan, Magenta, and 
Black.
Containing 
characters
Characters embedded in a watermark, such as "COPY 
INHIBITED," are called containing characters.
Kinds of 
watermarks
There are two kinds: "Character appearing" and 
"Background appearing."
When a watermark of "Character appearing" is copied, the 
background disappears and the containing characters 
appear.
When a watermark of "Background appearing" is copied, 
the watermark of the character area disappears and the 
containing characters become outline characters.
Principle of 
watermarks
A watermark is composed of two dots: fine dots and rough 
dots.
Since fine dots disappear when copied, they are called 
disappearing patterns.
Since rough dots remain when copied, they are called 
remaining patterns.
In a watermark of "Character appearing," the background is 
a disappearing pattern and the containing characters are 
remaining patterns.
In a watermark of "Background appearing," the background 
is a remaining pattern and the containing characters are 
disappearing patterns.
NOTE:
Note for 
watermarks
Watermarks have the following characteristics:
- A watermark is presumed to be synthesized with text 
documents. If it is used with photos or images, the 
containing characters may be seen in the watermark 
document (primary output) or the containing characters 
may not appear properly in the watermark copy 
(secondary output).
- When a watermark is synthesized with newspapers or 
other dark-background documents, the containing 
characters may not appear in the watermark copy 
(secondary output).
- Containing characters may not appear in the watermark 
copy (secondary output) depending on the kind of the 
copier which makes the watermark copy (secondary 
output) and the copy mode.
- Containing characters may not appear clearly in the 
watermark copy (secondary output) depending on the 
copy mode in which the watermark document (primary 
output) is made.
- When the print engine status changes, the containing 
characters may not be concealed properly in the 
watermark document (primary output). In this case, 
follow the procedures below to conceal the containing 
characters.
* Use SIM46-24 to execute the color balance 
adjustment.
* Use SIM46-54 to execute the color balance 
adjustment for each dither.
* Adjust the watermark print contrast in the system 
setting.
- Though the watermark of cyan or magenta is selected in 
the black and white mode, the black watermark is 
synthesized.
- For a document which is judged as monochrome with 
ACS selected, though the watermark color is specified as 
cyan or magenta, the black watermark is synthesized.
- The preview screen of the watermark only indicates the 
setting of the watermark color, and does not indicate an 
actual copy image.
- When the document control (printer mode) is used 
together, it is advisable to use "Characters appearing" 
setting. If "Background appearing" setting is used 
together, the detection accuracy of document control 
may be reduced.
- In the printer mode watermark, setting of 1200dpi and a 
watermark cannot be used together.
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