Konica Minolta DF-606 Service Manual page 124

4. PAPER FEED SECTION
C. Pre-registration control
The pre-registration roller is driven by the paper feed motor (M101) through the pre-registration clutch (CL102).
The turning ON or OFF of CL102 turns on or off the transmission of the driving force to start or stop the rotation.
The paper conveyed by the feed roller is pressed against the pre-registration roller, that has been stopped since
CL102 turned OFF, and forms a loop [2] to correct a paper skew. After a specified period of time since it forms
the loop, CL102 turns ON [3] and the pre-registration roller rotates to convey the paper to the main body with its
skew corrected. At this time, the feed clutch (CL101) turns ON [4] for a short period of time to rotate the feed
roller to assist the conveyance until the pre-registration roller nips the paper securely.
Paper feed motor (M101)
Feed clutch (CL101)
Pick-up solenoid (SD100)
Pre-registration clutch (CL102)
Pre-registration sensor (PS107)
LU exit sensor (PS106)
[1] Start button ON
[2] Skew corrected by forming a loop
8
[1] [2] [3] [4]
Theory of Operation Ver1.0 Jun.2005
[2] [3] [4]
[3] Paper conveyance to the main body
[4] Paper conveyance assist
15sst2c006na