Oki MC160MFP, Руководство по обслуживанию

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44292401TH Rev.1
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Oki Data CONFIDENTIAL
COMPOSITION/OPERATION
12.3.3 Developing Roller drive
• The developing roller is driven by the Developing motor (M3) and Intermediate gear.
• When the toner cartridge rack is stationery at the developing position, the developing
roller drive gear comes into mesh with the Intermediate gear. The developing roller is
then rotated through the drive provided by the Developing motor (M3) and Intermediate
gear.
12.3.4 Developing bias
• The developing bias voltage ( V b) is applied to the developing roller so that an adequate
amount of toner is attracted onto the surface of the photo conductor.
• The developing bias voltage ( V b) is supplied by the High voltage unit (H V ).
• The developing bias voltage is applied to the developing roller via the supply roller.
• The developing bias voltage is also applied to the doctor blade.
• The developing bias voltage is turned O
N at the same time that the developing motor is
energized and turned OFF at the same time that the developing motor is deenergized.
A034T2C522AA
Developing roller drive gear
Developing motor
(M3)
Developing roller
Intermediate gear
A034T2C556AA
Developing bias
12.3.5 Developing system
• The machine employs the single-component, non-contact developing system.
• In the non-contact, single-component developing system, the magnetic brush does not
rub the surface of the photo conductor (or the image). This prevents a foggy image from
occurring and the photo conductor from being worn.
12.3.6 Toner cartridge (TC) life control
A. Toner cartridge detection and new cartridge detection timing
• The machine attempts to perform a detection sequence when the front door is closed.
B. Toner cartridge detection
• The machine accesses the TC detection board (CSIC) to check for data stored in it.
Using that data, the machine determines whether or not a toner cartridge is loaded.
C. New Toner cartridge detection
• After a toner cartridge has been detected, the machine determines whether it is new or
not based on the data acquired.
D. Toner cartridge near empty and empty condition detection
• The amount of toner consumed is calculated from the number of dots produced for one
printed page by the controller. A toner near empty condition and a toner empty condition
are thereby detected.
<Toner near empty decision>
• The machine determines that there is a toner near empty condition when the image
counter and dot counter reach the life value.
<Toner empty decision>
• The machine determines that there is a toner empty condition when a predetermined
number of printed pages are produced after the toner near empty condition has been
detected.
4139to2063e2
De
v
eloping roller
Photo cond
u
ctor
12.3.3 Developing Roller drive
12.3.6 Toner cartridge (TC) life control
12.3.5 Developing system
12.3.4 Developing bias