5-4
Confidential
1.3.2 Print white level/black level data for document scanning compensation
(function code: 05)
<Function>
This function is used to print the contrast level data for document scanning compensation.
<Operation Procedure>
(1) For monochrome scanning, make a monochrome copy of the document. For color
scanning, scan the document in color mode.
(2) Press the [0] and [5] buttons in this order in the initial state of maintenance mode.
"1. FRONT 2. BACK?" is displayed on the LCD.
(3) Press the [1] or [2] button. "PRINTING" is displayed on the LCD, and the contrast level data
for document scanning compensation is printed.
When there is no paper in the paper tray, printing is cancelled.
When printing is completed, the machine returns to the initial state of maintenance mode.
îš„ Data to be printed (common to monochrome/color)
a) LED CURRENT DATA 1 byte
b) LED pulse data 1 (UP) (G) 2 bytes
c) LED pulse data 1 (DOWN) (G) 2 bytes
d) LED pulse data 1 (UP) (B) 2 bytes
e) LED pulse data 1 (DOWN) (B) 2 bytes
f) LED pulse data 1 (UP) (R) 2 bytes
g) LED pulse data 1 (DOWN) (R) 2 bytes
h) LED pulse data 2 (UP) (G) 2 bytes
i) LED pulse data 2 (DOWN) (G) 2 bytes
j) LED pulse data 2 (UP) (B) 2 bytes
k) LED pulse data 2 (DOWN) (B) 2 bytes
l) LED pulse data 2 (UP) (R) 2 bytes
m)LED pulse data 2 (DOWN) (R) 2 bytes
n) RLCV (AFE Parameter) 1 byte
o) OFFSET (AFE Parameter) 1 byte
p) GAIN (AFE Parameter) 2 bytes
q)
Background color compensation data
1 byte
r)
HP detection black compensation data
2 bytes x 5
s) Black level data Based on previous scanning pixel count
t) White level data (G) Based on previous scanning pixel count
u) White level data (B) Based on previous scanning pixel count
v) White level data (R) Based on previous scanning pixel count
Note:
• Be sure not to perform this operation procedure immediately after the power is turned ON,
but after performing the document scanning operation at least once. The machine initializes
the contrast level data and obtains the standard value for document scanning compensation
at the start of scanning the document. Therefore, if this function is used without performing a
document scanning operation, the correct contrast level data cannot be printed even though
the function code 05 is excuted.
The print result varies depending on whether color scanning or monochrome scanning is
performed immediately before this operation procedure. Check the contrast level data you
want to print and then implement the procedure below.
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