2HJ/2HK
2-1-10
(3) Developer drive stop mechanism
Developer drive stop mechanism detaches the drive transmission of developers other than black developer at the time of
monochrome printing and makes stop, drives only black developer due to the movable part and the operation of developer
drive stop motor with idle plate lever, cam lever, cam gear and idle arm plate etc. which in main drive unit are provided.
Each drum motor gear (K1, Y1, C1, M1) is always geared with each idle gear (K2, Y2, C2, M2), so that the drive of idle
gear is transmitted to developer gear (K3, Y3, C3, M3) and developers are driven.
Since the shaft of idle gear (K2) which transmits a drive to a black developer is being fixed to main drive unit, although a
drive is transmitted to developer gear (K3) and a black development unit always drives.
But idle gear which transmits drive to developer of the other colors (Y2, C2, M2) because in idle arm plate which mobility it
does it is installed, the idle gear (Y2, C2, M2) with developer gear (Y3, C3, M3) connection leaves due to the mobility of
idle arm plate, the mechanism where drive is separated.
According to this mechanism, although all developers are driven at the time of color printing, only a black developer is
driven at the time of monochrome printing.
Figure 2-1-14
Y1
Y2
Y3
Monochrome printing
K1
K2
K3
C1
M1
C2
M2
C3
M3
K1
K2
K3
Main drive unit
Drum motor gear
Idle gear
Developer gear
Idle arm plate
Idle plate lever
Cam lever
Developer drive stop motor
Cam gear
Idle arm plate
Idle arm plate
Y1
Y2
Y3
C1
C2
C3
M1
M2
M3
Color printing
K1: (for black)
Y1: (for yellow)
C1: (for cyan)
M1: (for magenta)
K2: (for black)
Y2: (for yellow)
C2: (for cyan)
M2: (for magenta)
K3: (for black)
Y3: (for yellow)
C3: (for cyan)
M3: (for magenta)
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