Canon imageRUNNER ADVANCE C5051 Series Service Manual page 92

2
Technology■>■Image■Formation■System■>■Controls■>■Transfer/separation
● Drive■configuration ■
ITB motor
ITB displacement control motor
M13 M14
ITB steering
position sensor(PS24)
ITB displacement
sensor 1 to 4 (PS25
Primary transfer
Drive roller
detachment sensor 2(PS23)
(steering roller)
Waste toner
feeding screw
ITB cleaning
Primary
blade
transfer
auxiliary roller
Primary transfer
Tension roller
Primary transfer roller(M)
roller(Y)
Parts■name
M13 ITB■motor To■rotate■the■ITB■and■the■waste■toner■screw
M14 ITB■displacement■ To■move■the■drive■roller■(steering■roller)
control■motor
M15 Primary■transfer■ To■make■the■tension■roller■and■the■primary■transfer■roller■(Y/M/C)■
disengagement■motor engaged/disengaged
PS24 ITB■steering■position■ To■detect■position■of■the■drive■roller■(steering■roller)
sensor
PS22 Primary■transfer■ To■detect■whether■the■Tension■Roller■and■Primary■Transfer■
detachment■sensor■1 Roller■(Y/M/C)■are■pressurized■condition.
PS23 Primary■transfer■ To■detect■whether■the■Tension■Roller■and■the■Primary■Transfer■
detachment■sensor■2 Roller■(Y/M/C)■is■disengaged■condition.
PS25■to■28 ITB■displacement■ To■detect■position■of■the■ITB
sensor
UN47■to■48 Patch■Sensor■(front/ To■detect■color■displacement■level■(amount)
rear)
UN49 Patch■Sensor■(center) To■detect■patch■density■for■image■stabilization■control■(D-max,■
D-half,■etc.)■and■to■detect■the■color■displacement■amount
UN54 ITB■HP■sensor To■detect■home■position■of■the■ITB
2 Technology■>■Image■Formation■System■>■Controls■>■Transfer/separation
28)
Idol roller
ITB scraper
Primary transfer
detachment sensor 1(PS22)
Secondary transfer
outer roller
Primary transfer
roller(C)
Primary transfer Patch sensor
roller(Bk) (Front/Center/Rear)
(UN47 / UN48 / UN49)
Primary transfer disengagement motor
M15
Function
● Primary■transfer■disengagement■control ■
The■primary■transfer■roller■for■color■is■engaged■or■disengaged■to■keep■longer■life■of■the■image■
formation■parts■(photosensitive■drum,■ITB)
Execution■timing
•■ Roller■to■be■engaged:■when■making■color■prints■(If■2■and■more■sheets■of■Bk■continues■
within■a■job■at■Color■+■Bk■mix■printing,■disengage■the■Primary■Transfer■Roller■when■printing■
color)
•■ Roller■to■be■disengaged:■anytime■other■than■the■above■timing
Control■description
1)■Drive■of■the■primary■transfer■disengagement■motor■(M15)■rotates■the■cam.
2)■Rotation■of■the■cam■moves■the■support■arm■up/down,■which■separates■(disengages)■the■
color■primary■transfer■roller■from■the■ITB.
3)■Position■of■the■primary■transfer■roller■is■detected■by■the■Primary■transfer■detachment■sensor■
(PS22/23).
F-2-83
MEMO:
•■ At■standby,■the■color's■primary■transfer■roller■is■disengaged.
T-2-36
2-56
2-56