Ricoh Aficio Color 4006, Руководство по обслуживанию

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24 February, 1999 SCANNER UNIT
2-29
Detailed
Descriptions
2.4.7 ORIGINAL SIZE DETECTION
There are three APS sensors (reflective photosensors) in the optics cavity for
original size detection. The original width sensor [A] detects the original width,
while the original length sensors [B] and [C] detect the original length.
The original width sensor [A] and the original length sensor [B] have two internal
beams. Each beam scans a different point of the exposure glass. The other original
length sensor [C] uses only one beam.
If the original or platen cover is present over the scanning point for a particular
sensor, the beam is reflected, and each reflected beam activates a photoelectric
device.
Original Size
A4/A3
Version
(metric)
LT/DLT
Version
(inch)
APS1 APS2 APS3 APS4 APS5
A3 11 x 17 -- 1 1 -- --
B4 10 x 14 1 0 1 -- --
F4 8
1/2
x 14 0 -- -- -- 1 Metric: F4, F, or
Folio, depending
on
SP5-126-001
A4-L 8
1/2
x 11 0 -- -- 1 --
A4-S 11 x 8
1/2
-- 1 0 -- --
B5-S 11 x 8
1/2
1 0 0 -- --
B5-L 8
1/2
x 11 0 -- 1 -- --
A5-L 5
1/2
x 8
1/2
0 -- 0 -- -- See Note
L: Lengthwise S: Sideways
0: No paper, 1: Paper present, --: Don’t care
The diagram on the next page shows where the APS sensors are.
A259D003.WMF
[A]
[B]
[C]
[D]