Toner Mass Amount Control; Overview; Id Sensor Calibration - Ricoh G157 Service Manual

TONER MASS AMOUNT CONTROL

6.3 TONER MASS AMOUNT CONTROL

6.3.1 OVERVIEW

This machine automatically controls the toner mass quantity on the transfer belt.
The control procedure has four phases:

1. ID sensor calibration

2. Test pattern processing
3. Reference equation processing
4. Development bias adjustment
NOTE: The machine does not check the toner density on the paper.
6.3.2 ID SENSOR CALIBRATION
[A]
1. The cyan development unit makes a
rectangular image (patch) [B].
2. This cyan image on the transfer belt [A]
reflects the light from the ID sensor [C].
3. The controller examines the signal level
from this sensor, and calibrates the ID
sensor.
G157
[C]
6-12
[B]
G157D906.WMFF
G157D907.WMFF
SM