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COPYRIGHT © 2003 CANON ELECTRONICS INC. CANON DR-6080/9080C REV.0 SEPT. 2003
CHAPTER 2 FUNCTIONS & OPERATION
3. Shading
In the previous models (DR-5020/5080C), a
shading sheet had to be prepared separately,
and the shading correction value was determined
using the service mode, but this model
incorporates a shading plate and a shading
correction value determined by the reading unit
can be used.
Two shading plates are mounted near the
front and back platen rollers.
1) Shading plate mechanism
Fig. 2-205 shows the arrangement of the
shading plate for the back platen roller.
The shading plate is a white sheet, 0.1 mm
thick, housed near the platen roller, and is
normally not visible. When shading is
performed, the shading solenoid pulls in, so
that the shading plate coupled to the gear
pops out over the platen roller.
The lower shading plate carries out the
shading for the front reading unit, and the
upper shading plate does the same for the
back reading unit. When the shading is
completed, the shading plates move back to
their original positions.
Shading solenoid
(Upper side)
Upper
shading plate
Back
reading unit
Back platen
roller
Fig. 2-205
2) Shading plate timing
The operation of the shading plates is
carried out using the timing shown below.
a. when the power is on
b. after the upper unit is open or closed
c. after recovering from power-saving
mode
d. at the beginning of batch processing
e. when feeding is started, after no
feeding for 10 minutes, during
batch-to-batch processing
At the points a, b, and c, LED intensity is
adjusted. At d and e, white level adjustment
(gain adjustment) and black level adjustment
(offset adjustment) are performed according
to the LED intensity set at a, b, and c.
The LED intensity adjustment is carried out
by changing the lighting time of the LED.
When the shading plate pops out at points a,
b, and c, the LED lighting time under the
black-and-white (same for grayscale) and
color conditions are determined by the
reading unit and saved.
In this model, the white and black level
adjustments are performed by the reading
unit for each picture element, and the
adjustment value is saved on the sensor
drive PCB of the reading unit.
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Страница 195: ...COPYRIGHT 2003 CANON ELECTRONICS INC CANON DR 6080 9080C FIRST EDITION OCT 2003 vii ...
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Страница 284: ...38 Chapter 3 Software Closing CapturePerfect 1 Select Exit from the File menu ...
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Страница 352: ...1 Imprinter for DR 6080 9080C Installation Procedure IMS Product Planning Dept ...
Страница 354: ...3 2 Remove the rear cover 6 screws Note The rear cover of mass production model will be painted Remove these screws x6 ...
Страница 355: ...4 3 Remove the left cover 4 screws Remove these screws x4 ...
Страница 357: ...6 5 Open the upper unit and remove the screws x6 of right and left sides Remove these screws x6 ...
Страница 358: ...7 6 Insert the IP drain pad unit to the hole of left side of the main body in the proper direction ...
Страница 359: ...8 7 Insert it firmly to the back and fix it with 1 screw M3x6 ...
Страница 360: ...9 8 Remove the cable from the cable clamp of right side of main body s interior to avoid becoming an obstacle later ...
Страница 361: ...10 9 Insert the IP shaft to the hole of left side of main body s interior Insert the one that a tip is long Long ...
Страница 362: ...11 10 Insert the tip of rest one of the IP shaft to the hole of right side of main body s interior Short ...
Страница 363: ...12 11 Fit the retaining ring to left side of the IP shaft and fix it not to move Retaining ring ...
Страница 365: ...14 13 Insert the connector of the imprinter carriage to the following position of 80 sub PCB of main body ...
Страница 366: ...15 14 Replace the cable to cable clamp and the document eject cover to the original position ...