Image Stabilization Control; Outline; Operation Flow; Image Stabilization Control Flow When The Power Switch (Sw2) Is Turned On - Konica Minolta Bizhub 501 Service Manual

Theory of Operation Ver.2.0 Mar. 2009

21. IMAGE STABILIZATION CONTROL

21. IMAGE STABILIZATION CONTROL

21.1 Outline

This machine employs various image stabilization controls to realize the top quality print image at all times. The
operation of the image stabilization control varies between while in the power switch (SW2) ON and while in the
print.

21.2 Operation flow

21.2.1

Image stabilization control flow when the power switch (SW2) is turned ON

The following shows the operation flow of the image stabilization control when the SW2 is turned ON.
Power ON E. Environmental decision control
A. Fusing heater lamp early turn-ON
B. Drum rotation
D. Fusing preliminary rotation
C. Dot diameter adjustment control
Stand-by
A. Fusing heater lamp early turn-ON
(1) Purpose
To meet the warm-up specifications, the fusing heater lamps /1 (L2) and /2 (L3) are turned ON early enough so
that the surface temperature of the fusing roller goes up to the prescribed temperature in its early stage.
(2) Execution timing
When the power switch (SW2) is turned ON, without waiting for the initialization of the overall control, the fusing
heater lamp is turned ON by the signal on the printer control board (PRCB). However, since turning ON the fus-
ing heater lamps /1 (L2) and /2 (L3) at the same time causes an excessive inrush current, turn ON L3 first, and
then turn ON L2 a little after that. After turning ON L2 and L3, conduct the ON/OFF control at specified intervals
to maintain the prescribed temperature of the fusing roller that is stipulated in each operation mode.
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