Ricoh MP C2504 User Manual

Process Control
Mechanism
Sensor Construction
The ID Sensors (also called the TM/ID sensors) are used to measure the amount of toner on the transfer
belt and to correct any errors in color registration.
The TD sensor (also called the
sensor) is used to measure the toner density in the developer.
Outline of the ID Sensors
The ID sensors are fixed onto the main frame, against the surface of the transfer belt. Color registration is
checked by all three sensors; the front [A], center [B], and rear [C].
The center sensor [B] acts as an ID sensor and a MUSIC sensor.
Outline of the TD sensor
In this model, a non-contact toner density (TD) sensor, which we also call a mu ( ) sensor, is used for
toner density control.
The TD sensor is attached on the lower side of the development unit. Unlike a HST sensor, the board of
the TD sensor is exposed. So there is a cover around the sensor to protect it and to maintain a good
contact between the sensor and development unit.
The TD sensor measures the permeability of the developer without contacting it, from the outside of the
case, and converts the measured value to the toner density.
Process Control
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Ricoh MP C2504 Specifications

General

Print Technology	Laser
Functions	Print, Copy, Scan, Fax
Print Resolution	1200 x 1200 dpi
Scan Type	Flatbed, ADF
Max Scan Resolution	600 x 600 dpi
Copy Resolution	600 x 600 dpi
Max Paper Size	A3
Duplex Printing	Yes
Memory (RAM)	2 GB
Print Speed	25 ppm (A4)
Copy Speed	25 cpm (A4)
Fax Resolution	200 x 200 dpi
Paper Capacity	1200 sheets
Connectivity	USB, Ethernet, Wi-Fi
Dimensions	587 x 685 x 913 mm
Control Panel	9-inch Smart Operation Panel