Epson C 2900 Manual

5 - 42 Chapter 5   Parts List
Epson AcuLaser C2900NRevision B
Confidential
PL12.4 250 Feeder (Option) (4/5) [Illustration]
MiS05018SA
27
E2
ST2
E2
E2
E2
E1
2
3
5
1 (with 2-13,16,20-27,29-33)
6
78
9
10
11
12
13 31
13
21 16
171819
22
23 33
24 26
25 2029
30
(P4202)
(P4212)
Tray2 NO PAPER
SENSOR PAPER PAHT
SENSOR
32 (with 17-19)
3
4 

5 - 43 Chapter 5   Parts List
Epson AcuLaser C2900NRevision B
Confidential
PL12.4 250 Feeder (Option) (4/5) [List]
Item Parts name
1 CHUTE ASSY TURN (with 2-13,16,20-27,29-33)
2 SHAFT ASSY FEED [Same as PL3.2.2]
3 ROLL CORE MSI [Same as PL3.2.3]
4 ROLL ASSY FEED [Same as PL3.2.4]
5 BEARING EARTH [Same as PL3.2.5]
6 ACTUATOR REGI OUT [Same as PL3.2.6]
7 SPRING REGI OUT [Same as PL3.2.7]
8 ACTUATOR REGI ROLL
9 ROLL ASSY REGI
10 ROLL REGI METAL [Same as PL3.2.10]
11 ACTUATOR REGI IN
12 SPRING ACT REGI [Same...

5 - 44 Chapter 5   Parts List
Epson AcuLaser C2900NRevision B
Confidential
PL12.5 250 Feeder (Option) (5/5) [Illustration]
MiS05019SA
2
3
4
56
7
1617
18 8
19
15 16 14
21 (with 2-8,14-18)
1 (with 19,21) 

5 - 45 Chapter 5   Parts List
Epson AcuLaser C2900NRevision B
Confidential
PL12.5 250 Feeder (Option) (5/5) [List]
Item Parts name
1 CASSETTE ASSY 250 OPT (with 19,21)
2 PLATE ASSY BOTTOM [Same as PL2.1.2]
3 SPRING N/F L [Same as PL2.1.3]
4 SPRING N/F R [Same as PL2.1.4]
5 HOLDER ASSY RETARD [Same as PL2.1.5]
6 GUIDE SIDE L [Same as PL2.1.6]
7 GEAR PINION [Same as PL2.1.7]
8 GUIDE SIDE ASSY R [Same as PL2.1.8]
9- -
10 - -
11 - -
12 - -
13 - -
14 LATCH BOTTOM L [Same as PL2.1.14]
15 LATCH BOTTOM R [Same...

Confidential
CHAPTER
6
Principles of Operation 

Chapter 6  Principles of Operation
Chapter 6  Principles of Operation  CONTENTS
Epson AcuLaser C2900N Confidential
1. Printing Process .......................................................................................................... 6 - 1
1.1 Summary of Printing Process ........................................................................................................... 6 - 1
1.2 Schematic Diagram for Printing Processes...

Chapter 6  Principles of Operation
Chapter 6  Principles of Operation  CONTENTS
Epson AcuLaser C2900N Confidential3.11 250 Paper Tray ............................................................................................................................. 6 - 46
3.11.1 Major functions 250 Paper Tray ............................................................................................ 6 - 46
3.11.2 Major functions (Paper Feeder)...

6 - 1 Chapter 6   Principles of Operation
Epson AcuLaser C2900NRevision B
Confidential
1. Printing Process
1.1 Summary of Printing Process
This printer is a Full-color laser printer which applies the principle of an electrophotographic recording 
system. The tandem system comprising the four color photoconductor drum of yellow, magenta, cyan 
and black (Y, M, C and K) creates the toner image.
Printing processes of this printer is composed of the basic steps as follows.
(1) Charge:...

6 - 2 Chapter 6   Principles of Operation
Epson AcuLaser C2900NRevision B
Confidential
1.2 Schematic Diagram for Printing Processes
Outline of printing processes is shown in the figure below.
MiS06002SA
ROS
[(2)Exposure]Drum Cartridge
[(1)Charge]
[(3)Development]
[(4)Transfer]
[(5)Cleaning]
FUSER UNIT
[(6)Fusing]
Transfer ASSY
[(4)Transfer]
[(7)Cleaning]: 
Laser beam
: Paper transfer 

6 - 3 Chapter 6   Principles of Operation
Epson AcuLaser C2900NRevision B
Confidential
1.3 Description of Printing Process Techniques
1.3.1 Charge
In the charging process, the drum surface rotating at a constant speed is charged uniformly with nega-
tive electricity by the discharge from BCR (Bias Charge Roll).
This process is performed in parallel for yellow, magenta, cyan and black colors.
- BCR (Bias Charge Roll)
The BCR is kept in contact with the drum and rotates following the rotations of the drum....