Registration Control - Konica Minolta bizhub c650 Service Manual

Theory of operation Ver. 2.0 May 2008
4.3.3

Registration control

• The registration control corrects paper skew in the Z-folding mode and the punch mode.
• The paper exited from the main body is pressed against the stopped registration roller
and forms a loop to correct skew of the paper, and then the paper is conveyed with its
leading edge nipped.
• The registration motor (M1) drives the registration roller.
Registration roller
Registration motor (M1)
A. Operation timing
(1) Punch + Z-folding
1. Transmitting the paper pass signal from the horizontal transfer, the registration
motor (M1) turns ON.
2. The registration motor stops a specified period of time after the paper size detect
board (PSDTB) detects the leading edge of the paper conveyed from the main
body.
3. The paper is pressed against the registration roller and forms a loop to correct
paper skew.
4. The registration motor turns ON and the conveyance is restarted a specified period
of time after the paper contacts with the registration roller.
5. The registration motor turns OFF a specified period of time after the paper is
exited.
• No registration control is conducted in the straight mode.
Paper size detect board (PSDTB)
Registration motor
(M1)
[1] Paper pass signal from the horizontal
transfer
[2] Registration motor (M1) stopped
High speed
Low speed
[1] [2] [3]
4. Conveyance section
Leading edge of the paper
Loop
[4]
[3] A loop formed
[4] Conveyance restarted
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