The toner in the toner cartridge is fed to the toner feed path and then to the developing assembly by the toner feed screw. The
toner presence/absence in the toner feed path is detected by the toner feed level detection sensor (S51) which is a magnetic
permeability sensor.
If the developing assembly toner level sensor(S25) detects the absence of the toner in the developing assembly, the toner feed
motor(M21) drives to rotate the toner feed screw to feed toner in the toner feed path to the developing assembly. Also, if the toner
feed level detection sensor (S51) detects the absence of the toner in the toner feed path, the bottle motor (M17) drives to rotate
the toner cartridge to feed the toner in the Toner cartridge to the toner feed path.
If the toner feed level detection sensor (S51) keeps detecting the absence of the toner for more than the specified period of time,
no toner in the toner cartridge is assumed and the message to replace the Toner cartridge will be displayed. Also, if the developing
assembly toner level sensor(S25) keeps detecting the absence of the toner for more than the specified period of time, no toner
in the developing assembly is assumed and a No Toner error message will be displayed.
M21
M1
M17
DC Controller PCB
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Main motor
drive signal
Bottle motor
drive signal
Toner Feed
Screw
Toner Feed
Screw
Toner Feed Level
Detection Sensor
Developing Assembly
Toner Level Sensor
Toner Feed
Motor
Developing Assembly
Main Motor
Bottle Motor
Toner Feed Path
Route of toner supply
Toner Cartridge
S51
S25
CL1
Developing Clutch
drive signal
Developing Clutch
■ Bottle State Detection
Purpose: To detect the state of the Toner Container
Detection timing
• At power-on
• When the Toner Bottle Exchange Door is closed
• At recovery from sleep mode
Bottle ROM PCB(UN76) detects the state of the bottle from the Toner Container memory [1].
2. Technology
97
Summary of Contents for imagerunner advance 4551i
Page 19: ...Product Overview 1 Product Lineup 7 Features 13 Specifications 16 Name of Parts 26 ...
Page 155: ...Periodical Service 3 Consumable Parts List 143 Cleaning Check Adjustment Locations 146 ...
Page 392: ...Error Jam Alarm 7 Overview 380 Error Code 383 Jam Code 509 Alarm Code 520 ...
Page 545: ...Service Mode 8 Overview 533 COPIER 549 FEEDER 845 SORTER 851 BOARD 871 ...
Page 892: ...Unpacking 1 2 1200 mm 840 mm 769 mm 1230 mm 2430 mm 3 9 Installation 879 ...
Page 895: ...3 4 NOTE Keep the removed screws for relocating the host machine 2x 5 6 7 9 Installation 882 ...
Page 896: ...8 9 10 1x Installing the Air Filter 1 9 Installation 883 ...
Page 897: ...2 3 Installing the Drum Unit 1 2 3 9 Installation 884 ...
Page 899: ...8 NOTE The screw removed at procedure 4 is used 1x 9 10 11 12 9 Installation 886 ...
Page 923: ...5 6 NOTE Use the screws and Rubber Caps removed in step 1 2x 7 2x 9 Installation 910 ...
Page 935: ...7 1x 8 9 6x 10 2x 9 Installation 922 ...
Page 936: ...11 Installing the NFC Kit 1 2 2x 3 TP M3x4 1x 9 Installation 923 ...
Page 938: ...4 5 1x 6 9 Installation 925 ...
Page 985: ...8 2x 2x TP M4x8 Black When installing the USB Keyboard 1 9 Installation 972 ...
Page 991: ...7 4x 8 1x 1x Lower Cover 9 1x 10 1x 1x 9 Installation 978 ...
Page 992: ...11 1x 1x 12 1x 13 TP M3x12 2x 14 4x TP M3x6 9 Installation 979 ...
Page 997: ...Installation Procedure 1 2 2x 3 2x 4 6x 5 4x 9 Installation 984 ...
Page 998: ...6 7 NOTE Do not close the Wire Saddle 1x 1x 8 9 9 Installation 985 ...
Page 1003: ...2 1x 1x 3 2x 2x 4 9 Installation 990 ...
Page 1012: ...2 1x 1x 3 2x 2x 4 9 Installation 999 ...
Page 1014: ...7 CAUTION The connector must be contacted TP㸹M3x6 3x 1x 8 4x 9 9 Installation 1001 ...
Page 1016: ...13 4x 14 15 Binding M4x16 Binding M3x16 2x M3x16 M4x16 16 Binding M4x6 1x 9 Installation 1003 ...
Page 1023: ...Installation Procedure Preparation 1 4x 2 1x 1x 3 2x 9 Installation 1010 ...
Page 1029: ...4 5 1x 1x 9 Installation 1016 ...
Page 1048: ...3 2x TP M3x8 Black 4 2x TP M3x6 5 9 Installation 1035 ...
Page 1053: ... Installing the Removable HDD Kit 1 2x 2x 2 3 1x 4 9 Installation 1040 ...
Page 1065: ...3 2x TP M3x8 Black 4 2x TP M3x6 5 9 Installation 1052 ...
Page 1071: ... Installing the Removable HDD Kit 1 2x 2x 2 3 1x 4 9 Installation 1058 ...