Developing Bias; Hmt (High Grade Micro Toning) Development - Konica Minolta bizhub 200 Service Manual

12. Developing section
12.3.4

Developing bias

• The developing bias voltage (Vdc) is applied to the Developing Roller so that an ade-
quate amount of toner is attracted onto the surface of the Photo Conductor.
• In addition to the negative DC component, AC voltage is applied during development to
help toner to be attracted more easily to the surface of the Photo Conductor.
Developing Bias Terminal
12.3.5

HMT (High grade Micro Toning) development

• With the HMT method, the magnetic developer brush does not rub against the surface of
the Photo Conductor (the images). Accordingly, sharper line images can be reproduced,
involving no uneven image density at the trailing edge or thin lines and achieving even
finer reproduction of the solid image areas.
Developing Roller
32
Theory of Operation Ver. 2.5 Jul. 2006
Photo Conductor
4036ma2013c0
4040T2C528AA