The secondary transfer roller disengages from the ITB when the DC controller turns the SL4
again for 0.5 second and rotates the cam a half turn.
Figure 5-51.
Secondary transfer roller engaging/disengaging control
Secondary transfer roller engaging/disengaging detection
The DC controller monitors the secondary transfer roller engaging sensor (PS16) when the
secondary transfer is completed.
The secondary transfer roller engaging cam has the secondary transfer roller engaging flag
on its shaft. When the secondary transfer roller is engaged with the ITB, this flag shields the
PS16 and the SECONDARY TRANSFER ENGAGING DETECTION signal (T2SNS) is
output (condition “H”), and vice versa when the roller is disengaged (condition “L”). The DC
controller monitors the position (engagement) of the roller based on this signal.
ENWW Image formation system 173
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