Toshiba e-STUDIO 550, Service Manual

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JUNE 2002 © TOSHIBA TEC 16 - 1 e-STUDIO550/650/810 RADF
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.
16. REVERSING AUTOMATIC DOCUMENT FEEDER (RADF)
16. 1. General Description
Tray sensor
Feed roller
Registration roller
1st roller
2nd roller
3rd roller
4th roller
Read roller
Read sensor
Original width sensor
Empty sensor
Original length sensor
Large original exit sensor
Reverse flapper
Large original exit flapper
Small original exit flapper
Intermidiate transport sensor
Intermidiate transport roller
Small original reverse roller
Pickup belt
Separation roller
Registration sensor
Large original
exit roller
Small original reverse flapper
Small original reverse sensor
Small original exit sensor
Small original exit 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