TONER SUPPLY hp Color 9850mfp II UNIT EXPLANATION 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 hopper section. B.
No-toner display on the operation LCD 50 g and no toner is supplied to the toner hopper section even after the toner supply operation above is When the toner level detection sensors Y, M, C and K (TLD Y, M, C, K) detect the toner level of about 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 matches the reference value of the toner density.
2-36 Symbol Name Function or method [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 50g) Toner bottle capacity: Approx. 460g [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 50g) Toner bottle capacity: Approx.
460g [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 24VDC drive [16] Toner bottle clutch Y (MC13) Transmission of driving force from the toner bottle motor (M53) to the toner bottle Y 24VDC drive PS14 Toner supply unit open/close sensor Toner supply unit open/close detection