Original Size Detection Control - Develop ineo+ 6500 Service Manual

Theory of Operation Ver1.0 Sep.2006
7.3.2

Original size detection control

A. Detection method
• The detection method differs between in the platen mode and in the DF mode.
(1) DF mode
• Refer to DF-609.
(2) Platen mode
• Main scanning direction: CCD sensor
• Sub-scanning direction: Turning on/ off of the APS sensors/1 (PS3) and /2 (PS4)
Original size
Smallest
B5S
B5
B4
A4S
A4
A3
8 / x 11S
1
2
8 / x 11
1
2
8 / x 14
1
2
11 x 17
B. Detection timing
(1) DF mode
• Refer to DF-609.
(2) Platen mode
• The original size in the main scanning direction is detected twice and the larger one is regarded as the orig-
inal size.
APS sensor /1 (PS3)
APS sensor /2 (PS4)
Exposure lamp (L1)
APS timing sensor /1 (PS2)
Read switch (RS)
[1] First Original size detection
(Main scanning/Sub-scanning direction
detection)
CCD sensor
(Length of detection: mm)
102
182
257
257
210
297
297
215.9
279.4
215.9
279.4
[1]
PS3
(ON/OFF)
OFF
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
[2]
[2] Second original size detection (main scan-
ning direction)
7. SCANNER SECTION
PS4
(ON/OFF)
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
ON
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