Developing; Toner Empty Detection - MINOLTA-QMS Magicolor 2200 Series Manual

4-5 Developing

The toner is applied in an even thickness to the developing roller by the toner controller plate, the toner is then applied
to the electrostatic latent image on the OPC drum, and finally the toner image is developed.
OPC drum
Toner controller plate Developing roller

4-6 Toner empty detection

Toner empty detection is performed when the light from the toner empty sensor (PWB-H) is reflected by the reflector
mirror in the toner cartridge. The amount of reflected light is measured by the photo sensor. This measurement detects
the strength and duration of the reflected light as the toner stirring blades also block the reflected light.
• Toner empty detection is performed by the faster of either of the following: the optical detection mentioned above or
the count for the number of images.
Toner cartridge
Reflector mirror
LED light passage port
LED Photo sensor
C-15