Basic Sequence After Depression Of Start Key (Adf Mode, One Sheet Of Original); Various Control; Enlargement/Reduction; Magnification Change In Vertical Scan Direction - Canon MF6500 Series Service Manual

3.2.3 Basic Sequence after Depression of Start Key (ADF Mode, One Sheet of Original)

LaserBase MF6530 / / LaserBase MF6540PL / LaserBase MF6550 / KaserBase MF6560PL / / LaserBase MF6580PL

3.3 Various Control

3.3.1 Enlargement/Reduction

3.3.1.1 Magnification Change in Vertical Scan Direction

LaserBase MF6530 / / LaserBase MF6540PL / LaserBase MF6550 / KaserBase MF6560PL / / LaserBase MF6580PL
In the Book mode or when the ADF is used
In the vertical scan direction, the image is read at 100%. Magnification is changed by processing data on the image processor PCB.

3.3.1.2 Magnification Change in Horizontal Scan Direction

LaserBase MF6530 / / LaserBase MF6540PL / LaserBase MF6550 / KaserBase MF6560PL / / LaserBase MF6580PL
In the horizontal scan direction, magnification is changed as follows depending on the selected magnification rate:
1) When magnification is reduced to 50-99%
Data is processed on the image processor PCB with the original scan speed held at 118 mm/sec.
2) When magnification is increased to 100-200%
The original scan speed (in the Book mode)/original feed speed (when the ADF is used) is changed within the range of 118 mm/sec to 59 mm/sec depending on the
selected magnification rate. Data is not processed on the image processor PCB.
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Original glass reading
start position
1. Moves to the start position
after black shading/white shading.
2. Original scan
3. Moves to the standby position
Start key
ON
STBY
Reader motor
(M401)
LED
CS HP sensor
(SR401)
Shading
Stream reading
position
Stream reading
start position
1. Black shading/
White shading/
Original scan
CS HP
sensor
Shading Leading edge
HP
position of original
F-3-5
Black shading/White shading
SCRW SCFW
Trailing edge
position of original
F-3-6
CS HP
sensor
Original glass
reading start
position
HP
F-3-7
Trailing edge
of original
STBY
Shading
position
: Forward movement
: Backward movement
Shading
position
Chapter 3
0012-7077
0012-7078
0012-7079
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