In the TD sensor (also called the µ sensor), there is an ID chip storing the machine identification information, the running distance information of Development unit and PCU, and other information used by image density control.
ID chip
PCDU replacement information and toner density information are stored.
In the ID chip, the following data is stored.
- Model series ID
- New PCDU information
- Color information
- Developer replacement information
- PCU replacement information
- TD sensor serial no., date of manufacture
- Date of unit installation
- Unit total counter at installation (no. of sheets, travel distance)
- Date of unit operation
- Unit total counter during operation (no. of sheets, travel distance)
- Unit parts information
- Total counter
- Total color counter