Ricoh Di-C1 Manual page 184

Toner
Bottle
Toner End
Sensor
To supply toner, the toner bottle is rotated.
The toner goes down a tube, and goes into the sub hopper.
The toner end sensor is attached to the sub hopper.
Slide 184
This mechanism is the same for each of the four toner bottles in the
machine.
The TD sensor contains an ID chip that contains information about the
PCDU, development unit, and drum unit, such as counters.
We discussed this in the PCDU section.
The RFID chip in the toner bottle contains data on the amount of toner
consumed from the bottle, and is used for toner bottle detection (the machine
uses it to detect if the bottle installed or not).
Overview
TD Sensor
184
Di-C1 Training
Development
Unit