Toshiba e-STUDIO2008A Service Manual page 111

3.16 AUTOMATIC DUPLEXING UNIT (ADU)
3.16.1 General Description
The Automatic Duplexing Unit (ADU) of this equipment is a unit to reverse the paper when duplex
printing is performed. The ADU mainly consists of the transport roller and its driving section, paper
guide and ADU entrance/exit sensors.
The ADU for the 20/25/30 ppm models adopts the switchback method to transport the paper through
the exit roller. Immediately after printing on one side of the paper (completing the fusion process), the 3
exit roller switchbacks to transport the reversed paper to the registration section to print on the other
side.
The ADU for the 35/45/50 ppm models adopts the switchback method to transport the paper through
the reverse section. Immediately after printing on one side of the paper (completing the fusion process),
the reverse section switchbacks to transport the reversed paper to the registration section to print on
the other side.
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[ 20ppm/25ppm/30ppm ] [ 35ppm/45ppm/50ppm ]
Fig. 3-41
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OUTLINE OF THE MACHINE
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