Epson ACULASER COLOR 2000 Service Manual page 87

EPSON AcuLaser C2000 / AcuLaser C1000
Development
Toner regulation plate puts toner thin and equal upon the sleeve roller, gives
toner on the electrostatic latent image on the OPC drum, and develops toner
image on the photoconductor.
Developing
Agglomerated
OPC
Toner
Toner Regulation
Sleeve Roller
Plate
Figure 2-17. Development
Operating Principles
Sleeve Roller Counter-Rotation
Jumped out Toner
Printing Process
Toner Empty Detection
Toner empty detection is done by the following procedure.
The light from the toner empty detection LED (LED1) on the toner empty
detection board (PWB-H) is reflected by the reflection mirror inside the toner
cartridge. Photo sensor (PT1) measures this reflected light and detects the
toner empty by the largeness and length of the reflected light.
Toner empty is detected by the above mentioned optical detection or the value
of image counter whichever comes first.
Toner Cartridge
LED Light
Percolation
Window
LED Photo Sensor (PT1)
Figure 2-18. Toner Empty Detection
Detection
Toner Empty
Toner Near Empty Detection
Toner near empty is detected by the image dot counter (Integrated value of
Video Data integrated per line) or the image counter whichever comes first.
Revision E
Reflection
Mirror
K Toner Color (Y, M, C) Toner
50 ± 20g 50 ± 20g
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