Specifications

13-8. Sub Hopper Toner Empty Detecting Mechanism/Control

•

A toner-empty condition in the Sub Hopper is detected by the magnet

that turns at the same time as the Sub Hopper Toner Agitating Lever to

actuate and deactuate Sub Hopper Toner Empty Switch S8.

•

While the amount of toner in the Sub Hopper is more than the

predetermined one, the magnet is pushed upwards by the toner as it first

meets the toner during its downward swing. It thereafter turns with a

smaller turning radius, leaving a greater distance from S8. S8 therefore

remains deactuated.

•

When the amount of toner in the Sub Hopper is less than the

predetermined one, the magnet turns with a greater turning radius and

actuates S8 as it nears S8 during its downward swing. This results in S8

being repeatedly actuated and deactuated. When the cumulative period

of time during which S8 remains actuated exceeds a predetermined

value, the copier CPU determines that the Sub Hopper has run out of

toner.

= Toner Full =

Sub Hopper Toner Agitating Lever

Magnet

S8 : OFF

= Toner Empty =

S8 : ON

M-82