Ricoh Mp C3000 Service Manual

 
SM 6-41 B230/B237/D042 
Detailed 
Descriptions 
6.7.3 TONER CARTRIDGE 
RFID (Radio Frequency ID) 
 
Each toner cartridge of this machine has a RFID ch ip [A]. This stores the total “on” time of 
the toner supply clutch.  This is used to calculate the amount  of toner remaining in the toner 
cartridge. The chip is also used to detect whet her the cartridge is installed (if the cartridge 
is not installed, the machine does not det ect a signal from the memory chip). 
The RFID transmits its data to the...

 
B230/B237/D042 6-42 SM 
6.8  WASTE TONER COLLECTION 
6.8.1 TONER COLLECTION PATH AND DRIVE 
From PCU 
 
The used toner from the collection augers in the four PCUs drops into the toner collection 
duct from the four openings [A][B][C][D] at the  front of the PCUs. The toner collection auger 
[E] in the duct transports this used toner towa rds the toner collection bottle [F]. The coil [E] 
is driven by the toner transport motor [G ]. The openings and PCUs correspond as follows:   
Yellow 
 [A], Cyan...

 
SM 6-43 B230/B237/D042 
Detailed 
Descriptions 
From Image Transfer Belt Unit 
 
The toner collection auger [A] moves the used  toner from the image transfer belt and the 
used toner drops into the toner collection duct  [B]. The toner collection coil [C] moves the 
used toner to the opening [D] at the rear of t he toner collection bottle. The toner transport 
motor [E] drives the toner collection coil. 
Used Toner Distribution Mechanism 
 
The toner collection bottle has tw o openings (front and...

 
B230/B237/D042 6-44 SM 
6.8.2 TONER COLLECTION BOTTLE SET/ NEAR-FULL/ FULL 
DETECTION 
 
The toner collection bottle has a projection at  its rear side. When the toner collection bottle 
is set, this projection pushes the waste toner bottle set switch at the rear of the machine. As 
a result, the machine detects that the  toner collection bottle is installed. 
The bottle near-full/full detection mechanism  is above the bottle. When the used toner 
pushes up the used toner feeler [A], the  waste toner...

 
SM 6-45 B230/B237/D042 
Detailed 
Descriptions 
6.9  IMAGE TRANSFER AND PAPER SEPARATION 
6.9.1 IMAGE TRANSFER 
Overview 
 
 
1. Image transfer belt (ITB) 
2. ID sensor 
3. ITB drive roller 
4. Paper transfer roller 
5. Rotation encoder  6. Lubricant application roller 
7. Toner collection auger 
8. Cleaning blade 
9. Cleaning roller 
10. Image transfer roller 
 
The toner is moved from the four drums to the 
ITB by the four image transfer rollers. This is 
done with one rotation of the ITB (four toner...

 
B230/B237/D042 6-46 SM 
ITB (Image Transfer Belt) Drive 
Drive Motor 
 
The ITB drive motor [A] drives the image transfer belt [B] and the cleaning unit via gears 
and the ITB drive roller [C]. The speed of ITB  drive depends on the process line speed (see 
‘Laser Exposure – Optical Path’). 
Transfer belt speed control  
 
This machine uses the rotation encoder  to control the transfer belt speed.     
The encoder [A] is on one of the rollers. This  encoder checks the rotation speed of the 
image...

 
SM 6-47 B230/B237/D042 
Detailed 
Descriptions 
 
Filter H:   
The number of notches read by  the sensor when the rotation speed of the transfer belt is at 
its highest possible value. 
Filter L:   
The number of notches read by  the sensor when the rotation speed of the transfer belt is at 
its lowest possible value. 
ITB Current 
 
Each image transfer roller [A] applies current to  the image transfer belt to attract the toner 
from each drum [B]. The hi gh voltage supply board supplies current to the...

 
B230/B237/D042 6-48 SM 
Transfer belt cleaning 
 
The ITB-cleaning unit removes toner (during printing) and the ID sensor patterns (during 
process control or automatic line positi on adjustment) on the belt. Belt cleaning is 
completed while the image transfer belt makes one  rotation. The ITB drive motor drives the 
ITB-cleaning unit. 
The cleaning brush [A] always contacts the image transfer belt [B], and removes used toner 
from the belt. The cleaning blade [C] in the cleaning unit scrapes the...

 
SM 6-49 B230/B237/D042 
Detailed 
Descriptions 
ITB (Image Transfer Belt) Contact 
 
Mechanism  
The ITB contact and release mechanism increas es the lifetime of the image transfer belt 
and drums. The drum for black always contacts the belt. But the image transfer belt moves 
away from the other drums during monochro me printing. In the standby mode, the image 
transfer belt contacts only the black drum. It  moves away from the black drum when you 
turn the release lever counterclockwise.   
When the...

 
B230/B237/D042 6-50 SM 
 
1.  Remove the Image Transfer Belt Contact Motor [A] (
 sec. 3.10.8). 
2.  Using needle nose pliers, turn  the Transfer Belt Contact Motor Shaft [B] until the flat 
surface of the shaft is facing up          . 
 
3.  Open the front cover of the machine and ens ure the Transfer Belt is away from the 
OPC units before removing. 
4.  To reinstall the Transfer Belt Contact Mo tor, first turn the shaft [B] until the flat 
surface is facing down     . 
5.  Reinstall the Transfer...