Canon imageRUNNER ADVANCE C5255, Service Manual, Page: 82 / 1443

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Technology > Image Formation System > Overview > Specifications
Technology > Image Formation System > Overview > Specifications
Image Formation System
Overview
■ Overview
Image formation system of this machine uses the magnetic 2-component jumping developing
method for developing and the intermediate transfer method for transfer to create toner
image.
To increase life of the image formation unit, this machine uses the primary transfer
disengagement method as a new technology.
Following shows major improved points compared to the previous iRC3880/2880 series.
Purpose :
Lower running cost
Improved life of drum unit
Improved life of developing assembly
Improved productivity
Improved points :
Separating developing assembly from drum unit
Introducing Bk drum (highly-durable type)
Introducing ACR (Auto Carrier Refresh) technology
Separating the laser scanner unit into 2 units
(4-beam for each laser driver) (see Note)
Y M C Bk
Laser Laser Laser Laser
Primary transfer roller
ITB cleaner unit
Charging
roller
Photosensitive
drum
Secondary transfer
inner roller
ITB belt
Secondary transfer
outer roller
Post-secondary
transfer static eliminator
Patch sensor
ITB unit
drum unit
Developing
cylinder
Developing
assembly
Laser scanner unit 1
Laser scanner unit 2
Note :
4-beam for iR ADVANCE 5255/5250, 2-beam for iR ADVANCE 5240/5235
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Specifications
Item Function/Method
Photosensitive
Drum
Material OPC
O/D of drum 30mm
Cleaning Cleaning blade
Process speed imageRUNNER ADVANCE C5051=246mm/s,
imageRUNNER ADVANCE C5045=246mm/s,
imageRUNNER ADVANCE C5035/5030=160mm/s
Drum heater Mounted with Bk drum as a standard.
Assigned as an option for color drums.
Developing
assembly
Developing cylinder 1pc (single developing)
Developing method Dry, 2-component jumping
Toner Non-magnetic negative toner
Toner level detection Not available
O/D of cylinder 20mm
Primary
charging
Charging method Roller charging
O/D of roller 14mm
Cleaning Brush roller
Toner
container
Toner amount (the life value
is based on A4 size with 5%
image ratio)
imageRUNNER ADVANCE C5051/5045
Bk: approx. 940g (Life: approx. 40k)
Color: approx. 590g (Life: approx. 30k)
imageRUNNER ADVANCE C5035/5030
Detection of toner container
(presence)
Not Available
Availability to replace a toner
container (during continuous
print)
Available
Transfer method Intermediate Transfer (ITB)
ITB unit Material PI (Polyimide)
Circumferential length 893mm
Cleaning Cleaning blade
Belt displacement correction Available (photosensitive sensor)
Primary
transfer
Transfer method Transfer roller
Disengagement mechanism Available
O/D of roller 16mm
Secondary
transfer
Transfer method Transfer roller
Disengagement mechanism Not available
Cleaning Electrostatic cleaning
O/D of secondary transfer inner
roller
16mm
O/D of secondary transfer outer
roller
24mm
Separating method Curvature sepa static eliminator
Patch sensor Yes
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