Konica Minolta bizhub C658 Service Manual page 1785

bizhub C658/C558/C458/C368/C308/C258
[2] [1]
[3]
[4]
[5]
[1] Original size detection position
[3] Home position
[5] Shading correction
2.3.3 Control when the Start key is pressed
(1) Original scanning mode
• Original scanning mode has two types: Original cover mode and DF mode.
(a) Original cover mode
1. Turning the Start key ON will turn the LED ON.
2. The LED exposure unit moves in the return direction and stops at the shading position. At the shading position, the gain adjustment is
made.
3. The LED exposure unit moves in the return direction and stops at the scan start position.
4. To start a scan, the LED exposure unit moves from the scan start position to the leading edge of an original while performing shading
correction.
The exposure unit will start reading the original image from the leading edge.
The unit will finish reading the image at the trailing edge of the original.
5. The LED will turn OFF when the reading is complete.
6. The LED exposure unit returns from the position of the trailing edge of the original. At the shading position, it is determined that the
LED is turned OFF.
Then the LED exposure unit moves to the home position, and next moves to the original size detection position.
It scans only once even for the color-copies, since R, G, and B data will all be memorized in one scanning.
[1]
[2]
[6]
[7]
[8]
[1] Home position
[3] Shading position
[5] Trailing edge of the image
[7] Read original
[9] The LED turns ON
[6]
[3]
[4]
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 2.
[2] Shading position
[4] LED exposure unit (LU201)
[6] The LED turns ON
[5]
[9]
[2] Scan start position
[4] Original size detection position
[6] Gain adjustment
[8] Return
- -
O-10
SCANNER SECTION