Process Of Detection Of Original Size - Toshiba e-STUDIO281c Service Manual

6.7.2

Process of detection of original size

1) When the equipment is in the original size detection mode, carriage-1 is set at its home position.
2) When the platen cover is opened, the sensors receive the light reflected from the original and if one
of the matrix conditions shown in 4) for original sizes are met, the size of the original is instantly
detected.
3) The output signal from each sensor is input to CPU on the scanning section control PC board to
determine the size of the original.
[ A4 Series ]
APS-R
APS-C
Reflection type
APS-3
photosensor
APS-2
APS-1
Sensor detection points
© 2005 - 2008 TOSHIBA TEC CORPORATION All rights reserved
V [ LT Series ]
DD
Reflection type
Scanner
photosensor
CPU
GND SLG board
Fig. 6-15
6 - 13
V
DD
APS-R
APS-C
Scanner
CPU
APS-3
APS-2
GND SLG board
e-STUDIO281c/351c/451c
6
SCANNER