Laser Exposure; Development; Drum Cleaning - Epson ActionLaser 1600 EPL-5600 Service Manual

2.1.1.3 Laser Exposure

Laser exposure is the process of creating an invisible static electric image on the PC drum with
laser beams emitted from the optid unit. The mirror motor (scann er motor) rotates the six+ided
mirror counterclockwise to produce a laser light scan. (One side of the mirror produces one scan.)
The SOS (start of scan) sensor detects the laser rays fmm the fOS mirror and outputs the SOS
signals to make the starting position of each line of the image uniform.
Laser ernissiorl
-50V
Invisible atatic-

2.1.1.4 Development

Development is the process
invisible static electric image. l'he do&or blade
sleeve. When the toner ~asses between the d&tor blade &d the flexible sleeve, it becon&
negatively charged. The flexible sleeve transports toner to the surface of the PC drum and controls
the development with the developing bias voltage.
No positively charged toner is transported to the PC drum, and the doctor blade is negatively
charged to prevent the printout from having a foggy background.
Toner
- - -. - - -
2.1.1.5

Drum Cleaning

After the image is transferred onto paper, any re ~g toner on the PC drum is scraped off by
the cleaning blade and collected in the used toner bottie.
Rev. A
Print Head Unit
Sos
Figure 2-6. Laser Exposure
of creating a toner image on the PC drum bv amdvirvz toner to the
1
Figure 2-7. Development
a thin, even mat if m"~e~ ov& the flexible
I
II +
PC Drum
Sleeve Roller
II