Konica Minolta CF5001 - Manual (Page 87)

TONER SUPPLY CF5001 Ver.1.0 Sep. 2003
2-34
II UNIT EXPLANA
TION
6.2 Operation
6.2.1 Toner supply control to the toner hopper section
A. Toner supply operation
When the toner level detection sensors /Y, /M, /C and /K (TLD /Y, /M, /C, /K) detect the toner level of about
50g in the toner hopper section, the toner bottle motor (M53) and the toner bottle clutches /Y, /M, /C and /K
(MC13, MC14, MC15 and MC16) turn on and rotate the toner bottle to supply a new toner to the toner hop-
per section.
B. No-toner display on the operation LCD
When the toner level detection sensors /Y, /M, /C and /K (TLD /Y, /M, /C, /K) detect the toner level of about
50 g and no toner is supplied to the toner hopper section even after the toner supply operation above is
made, it is considered that no toner is left in the bottle. And a no-toner message is shown on the operation
LCD.
6.2.2 Toner supply control to the developing unit
A. When power on
Each of the toner density sensors /Y, /M, /C and /K (TDS Y, /M, /C and /K) detects the toner density in each
developing unit the specified period of time after the main switch (SW2) is turned on. When a value
detected at this time is below the reference value of the toner density that is stored in the CPU on the
printer control board (PRCB), the toner supply motors /Y, /M, /C and /K (M49, M50, M51 and M52) are
turned on to supply toner up to the specified density.
B. While in the copy/print operation
While in the copy/print operation, each of the toner density sensors /Y, /M, /C and /K (TDS Y, /M, /C and /K)
monitors the toner density. The output voltage of each of TDS Y, /M, /C and /K determines the length of the
toner supply time which is activated by turning on each of the toner supply motors /Y, /M, /C and /K (M49,
M50, M51 and M52) so that it becomes the reference value of the toner density.
[12] Toner level detection sensor /M
(TLD M)
Detection of the toner level in the toner hopper section /M
(Detection is made at the remaining quantity of about 50 g)
Toner bottle capacity: Approx. 460 g
[13] Toner level detection sensor /Y
(TLD Y)
Detection of the toner level in the toner hopper section /Y
(Detection is made at the remaining quantity of about 50 g)
Toner bottle capacity: Approx. 460 g
[14] Toner supply motor /Y (M49) Driving of the toner supply screw
Stepping motor
[15] Toner bottle clutch /M (MC14) Transmission of driving force from the toner bottle motor (M53)
to the toner bottle /M
24 VDC drive
[16] Toner bottle clutch /Y (MC13) Transmission of driving force from the toner bottle motor (M53)
to the toner bottle /Y
24 VDC drive
PS14 Toner supply unit open/close sensor Toner supply unit open/close detection
Symbol Name Function or method