Development - Ricoh Pro C9200 Operating Instructions Manual

2. Printing Process

Development

Development
The development system employs the dual-component
The developer is pre-mixed
developer that occurs over time.
Electrostatic latent image areas of the drum attract negatively charged toner particles from the
development roller [1].
To maintain consistent amount of toner attraction from the development roller [1] to the drum [2] for
stable image quality(toner density), image quality adjustment process runs automatically when turning
on the machine power and at optimum timings.
*1 The developer consists of positively charged carrier (+) and negatively charged toner (-).
*2 The carrier is pre-mixed with the toner in the toner bottle and the mixture is supplied to the development unit to
constantly refresh old developer in the development unit with new developer.
1
1
2
During the image quality adjustment process, toner patterns in 10 gradients are created on the ITB for
each toner color, which are read by the toner mark sensors. Xerographic conditions are adjusted
according to the sensor readings, maintaining consistent development (maximum image density).
6
5
4
3
2
1
8
*2
to prevent image quality degradation caused by deterioration of the
DZH301
[A]
DZH302
*1
development method.