Development Drive; Td Sensor; Pressure Release Filter - Ricoh MP C2504 Field Service Manual

7. Detailed Descriptions

TD Sensor

In the TD sensor (also called the
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

Pressure Release Filter

To prevent scattering of toner, the air pressure in the development unit is released via a filter.

Development Drive

A gear for developer coil rotation is provided on the front side of the unit (downstream side).
Drive source for Bk
PCU motor: Black / ITB drive motor
The PCU motor: Black / ITB drive motor is also used for the image transfer unit and waste toner bottle.
Drive is switched by the development solenoid.
1138
sensor), there is an ID chip storing the machine identification
Drive source for C, M, Y
Development motor: CMY