Centering Detection Control - Develop ineo+ 6500 Service Manual

4. PAPER FEED SECTION
B. Sensor detection and paper size
• The tables below lists how paper sizes are detected by the paper size VR (VR1), the paper size sensor/Rr
(PS110) and /Fr (PS111).
Main scan direction
VR1
291.1° or lower
291.0 to 241.5°
241.4 to 200.5°
200.4 to 141.1°
141.1 to 96.9°
96.9° or more
ON: Blocks light of the sensor
OFF: Transmits light of the sensor
4.3.5

Centering detection control

A. Outline
• The position of paper being conveyed is detected by the centering sensor (PS1) [3] and the LU exit sensor
(PS107), and the detected result is used in the image processing section to adjust timing to start printing so
that the scanned image is properly centered on the paper.
• PS1 detects the edge of the paper in the main scan direction.
• PS107 detects the edge of the paper in the sub scan direction.
[3]
[2]
[1] Separation roller
[2] Pre-registration roller (driven side)
18
Sub scan direction
PS110 ON OFF
PS111 ON ON
13 x 19 SRA3
A3 12 x 18
11 x 17 16K
B5 16K
SPECIAL SRA4S
A4S SPECIAL
[4]
Theory of Operation Ver1.0 Sep.2006
ON OFF
OFF OFF
SPECIAL SRA4
SPECIAL A4
8KS 8 / x 11
1
2
8KS B4S
8 / x 11S 8 / x 14S
1 1
2 2
8 / x 11S 8 / x 14S
1 1
2 2
[3] Centering sensor (PS1)
[4] Front side
[1]
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