Drive; Operation; Fusing Roller Drive Control - Konica Minolta A00F011 Service Manual

20. Fusing section

20.2 Drive

20.3 Operation

20.3.1

Fusing roller drive control

A. Fusing speed switching control
• The fusing motor provides drive for the fusing section.
• To prevent poor fusing performance, the fusing speed is changed in two steps according
to the paper type.
Fusing speed
B. Fusing speed control (control of loop before fusing)
• To prevent double transferred images and brush effects from occurring, the difference
between the fusing speed and the media conveyance speed during image transfer is cor-
rected.
• The media loop sensor detects the length of the loop formed in the media between the
2nd transfer roller and the fusing pressure roller. The fusing speed is then varied accord-
ing to the length of the loop detected. By varying the fusing speed, paper is prevented
from being misfed or contacting the charge neutralizing cloth.
No loop control is provided to perform the fusing process when envelopes are used (to
prevent wrinkles).
76
Fusing roller
Fusing motor (M4)
Plain paper (mm/s) Thick paper, envelops, gloss paper, OHP (mm/s)
144
Theory of operation Ver.1.0 Nov. 2007
Pressure belt
72
A011T2C543AA