Toshiba e-studio550 Service Manual page 238

16. REVERSING AUTOMATIC DOCUMENT FEEDER (RADF)
16. 1. General Description
The Reversing Automatic Document Feeder (RADF) is a device that automatically feeds originals one
by one to the ADF original glass and discharges them to the receiving tray after scanning is finished.
RADF consists of the following sections.
• Original feeding section
This section, cosisting of the pickup belt, feed roller, separation roller, registration roller, etc.,
feeds originals one by one to the ADF original glass.
• Original transporting/scanning section
This section, consisting of the read roller, transport roller, etc., transports an original on the ADF
original glass and scans it at the same time.
• Original reverse/exit section
This section, consisting of the exit roller, reverse flapper, reverse roller, etc., discharges an original
to either the large or small receiving tray after scanning is finished. When two-sided scanning is
carried out, the original is reversed by switching the reverse flapper and fed again to the ADF
original glass.
Original width sensor
Large original exit flapper
1st roller
Read sensor
2nd roller
Read roller
Note: Large-sized original: A3, B4, LD, LG
Small-sized original: A4, A4-R, B5, B5-R, A5-R, LT, LT-R, ST-R
JUNE 2002 © TOSHIBA TEC
Original length sensor
Registration sensor
Separation roller
Registration roller
Feed roller
Intermidiate transport roller
Large original
exit roller
Large original exit sensor
Intermidiate transport sensor
4th roller
3rd roller
Reverse flapper
Pickup belt
Empty sensor
Small original exit sensor
Small original exit roller
Small original reverse roller
Small original reverse sensor
Small original reverse flapper
Small original exit flapper
16 - 1
Tray sensor
e-STUDIO550/650/810 RADF