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Printing Process; Summary Of Printing Process - Dell 5110cn Service Manual

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Table of Contents

1. Printing Process

1.1 Summary of Printing Process

This printer is a "Full-color laser printer" which applies the principal of an electrophotographic recording
system. The tandem system comprising a drum and developing unit respectively for each color of
yellow, magenta, cyan and black (Y, M, C and K) places toner image of each color on paper producing
full-color prints finally through 3 intermediate transfer units (IDT 1: 2, IDT 2: 1).
Printing processes of this printer is composed of the basic steps as follows.
(1)
Charging with electricity:Drum surface is charged with electricity.
(2)
Exposure: ......................... Image unit is exposed to laser beams.
(3)
Development: ................... Image is developed with toner.
(4)
Primary transfer: ............... Toner image is transferred to the intermediate transfer unit (IDT 1).
(5)
Secondary transfer: .......... Toner image on the intermediate transfer unit (IDT 1) is transferred
(6)
Cleaning: .......................... The intermediate transfer unit (IDT 1) is cleaned.
(7)
Tertiary transfer: ............... Four-color finished toner image on the intermediate transfer unit
(8)
Cleaning: .......................... Intermediate transfer unit (IDT 2) is cleaned.
(9)
Static elimination: ............. Electric charge of the paper is eliminated.
(10) Fixing: ............................... Toner on the paper is fixed by heat and pressure.
(11) Cleaning: .......................... Remaining toner on the drum and intermediate transfer units are
Intermediate
transfer unit
to the intermediate transfer unit (IDT 2).
(IDT 2) is transferred onto the paper.
collected.
Drum Y
Drum M
Charged
(1)
with
(1)
electricity
(2)
(2)
Exposure
Develop-
(3)
(3)
ment
Primary transfer
(4)
(Drum → IDT1)
Cleaning
(6)
( IDT1)
( IDT1)
(5)
Secondary transfer
( IDT1 → IDT2)
Intermediate
transfer unit
( IDT2)
(7)
Tertiary transfer
( IDT2 → Paper)
(9) Static elimination
Paper
(10) Fixing
IMAGING DRUM
Drum C
Charged
Charged
with
(1)
with
electricity
electricity
(2)
Exposure
Exposure
Develop-
Develop-
(3)
ment
ment
(4)
Intermediate
transfer unit
( IDT1)
(8)
Cleaning ( IDT2)
Cleaning
(11)
(general)
6 – 1
Chapter 6 Principles of Operation
Drum K
Charged
(1)
with
electricity
(2)
Exposure
Develop-
(3)
ment
Primary transfer
(Drum → IDT1)
Cleaning
(6)
( IDT1)
TRANSFER
ROLLER
Ten06014KA

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Table of Contents

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