Ricoh C211 Service Manual page 52

1.15 PAPER SIZE DETECTION: VT2300/VT2500
,/
[A]
m
1
A4/LG
%-d
~ [SN1 ] I:SN2] [SN3]
B4/DLT
!
I mGJ=a I
~ [SN1] @N2] [SN3]
I i \
4
lengthwise.
lengthwise.
lengthwise,
The size of the paper set on the paper table is detected by the three paper
size sensors (photo sensors) mounted on the paper table [A].
The master making process (Master feed direction only) is controlled according
to the detected paper size so that ink will not be transferred to the pressure
roller when the printing paper is smaller than the image on the master.
Paper size sensors [SNI ], [SN2], and [SN3] detect the paper size before the
master making process starts, The master making length in the master feeding
direction is determined by sensor ON/OFF states as shown below.
A4 Version:
1
Paper Size Sensor Master Making
Master Making Length in
Paper Size
Length in
Combine 2 Originals Mode
SN1 SN2 SN3
Normal Mode
More than 100% Less than 93%
ratio
ratio
A3/B4 lengthwise ON ON ON
354 mm
354 mm 354 mm
A4 lengthwise ON ON
OFF 287 mm
287 mm
291.1 mm
B5 lengthwise
ON OFF OFF 247 mm
247 mm 251.3 mm
A5 lengthwise
B5
sidewavs
OFF OFF OFF 172 mm
172 mm 203.1 mm
.T Version:
Paper Size Sensor Master Making
Master Making Length in Combine
Paper Size
Length in
2 Originals Mode
SN1 SN2 SN3
Normal Mode
More than 100%
Less than 93!!40
ratio
ratio
DLT lengthwise
ON ON ON 354 mm (13.9")
354 mm (13.9") 354 mm (13.9")
LG lengthwise ON ON
OFF
345.6 mm
345.6 mm 345.6 mm
(13,6")
(1 3.6") (13.6")
LT lengthwise
ON OFF OFF
269.4 mm
269.4 mm 269.4 mm
(10.6")
(10.6") (10,6")
~ 2~ HLT Ien thwise OFF OFF OFF
205.9 mm 8.1" 205.9 mm 8.1"
2-18