Epson AcuLaser C1900 - Page 90

EPSON AcuLaser C1900/AcuLaser C900 Revision B
Operating Principles Mechanism Overview 90
Table 2-3. Various Sensors
Unit
Detecting
matter
Detecting method Remark
Developer
Cartridge
Presence
Reflection photo switch
detecting method
Detects chipped gear
New product
Reflection photo switch
detecting method
Detects chipped gear
Remaining
amount
Acquires gas gauge
(0 ~ 100%, in 2% steps) and
image counter via controller
Gas gauge:
Displays dot counter in 2%
steps
Insertion when
powering on
Reflection photo switch
detecting method
• Removal/installation and
replacement are possible
without powering off
• No mechanical defect
• Removal/installation state
is updated when cover is
closed
Near end
Near end value is not set for
engine
Controller sets near end value
Empty
Counted faster detection
between gas gauge and
image counter
Gas gauge:
When reaches to 0%
Image counter:
When reaches to 6000/2000
images
*1
Photoconductor
Unit
Presence Contact conduction method
New product Fuse method (cuts new fuse)
Insertion when
powering on
Contact conduction method
• Insertion is possible
without powering off
• No mechanical defect
• Insertion state is updated
when cover is closed
Amount
consumed
Gas gauge
(0 ~ 100%, in 2% steps)
Measures operating time
(rotation time of motor)
Accounts every 30 seconds
Near end
Near end value is not set for
engine
Controller sets near end value
End
Notifies a flag when gas
gauge reaches to 0%
Controller performs
processing of forbidding
printing
Waste Toner
Collector
Presence Leaf switch
Near full, Full
Near: Photo interrupter
End: Notifies a flag when
soft counter reaches to end
• Soft counter from when
detecting near to when
detecting full
• After detecting, forbids
printing in 200 images
Transfer Unit
Presence
None
(However, when it fails in
initialization of a belt, it is
judged that it is not equipped
with the transfer belt unit.)
(A service call error
displayed)
New product
Fuse method
(cuts new fuse)
Amount
consumed
Near end value is not set for
engine
Near end
Near end value is not set for
engine
Controller sets near end value
End
Near end value is not set for
engine
Controller sets end value
(Refer to product
specifications)
MP tray Paper out Transmission photo switch
Optional 500-
sheet cassette
Unit Connector contact
Presence Transmission photo switch
Near empty Transmission photo switch
Remaining amount:
Detects at 50 ± 30 (80 g/m
2
paper) sheets
Paper out Transmission photo switch
Table 2-3. Various Sensors (continued)
Unit
Detecting
matter
Detecting method Remark