Konica Minolta bizhub C658 Service Manual page 1887

bizhub C658/C558/C458/C368/C308/C258
[1]
[7]
[8]
[1] Fusing drive position
[3] Fusing drive release gear
[5] Right door close position
[7] Fusing pressure roller
[9] Jam removal dial
[11] Right door open position
14.3.3 Fusing speed correction
(1) Fusing loop control
• To prevent double transferred images and brush effects that occur due to a difference in speed between paper transport during image
transfer and fusing, a loop is formed in the paper between the 2nd transfer and fusing sections.
• The fusing loop sensor detects the length of the loop formed in the paper between the 2nd transfer section and the fusing pressure roller.
• The fusing motor increases or decreases the fusing speed according to the length of loop in the paper, thereby ensuring that the length
of loop falls within a predetermined range.
Fusing loop sensor
Unblocking
Blocking
[6]
[5]
[9]
[10]
[11]
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 14.
[2]
[3]
[4]
[2] Fusing motor (M3)
[4] Fusing drive release lever
[6] Connected to fusing motor
[8] Fusing drive release position
[10] Connected to jam removal dial
- -
Loop amount
Large
Small
O-112
FUSING SECTION (bizhub C658/C558)
Fussing speed
Speed-up
Slowdown