Phaser 6121MFP Service Manual 2-29
Theory of Operation
Monochrome Process Operation
The Toner Cartridge Rack follows these steps for monochrome prints.
1. The Toner Cartridge Rack is stationary at the standby position.
2. When a print request is received from the controller, the Toner Cartridge Rack
is rotated to bring the K Toner Cartridge to its developing position.
3. Development of monochrome printing is started.
4. When the development is completed, the Toner Cartridge Rack is rotated and
brought to a stop at the standby position.
Color Process Operation
The Toner Cartridge Rack follows these steps for color prints.
1. The Toner Cartridge Rack is stationary at the standby position.
2. When a print request is received, the Toner Cartridge Rack rotates to place the
Y Toner Cartridge to its developing position.
3. Development of Y is carried out.
4. When development of Y is completed, the Toner Cartridge Rack is rotated to
bring the M Toner Cartridge to its developing position.
5. Development of M is carried out.
6. Similarly, the Toner Cartridge Rack rotates and development of C is carried
out, followed by K.
7. When the development of K is completed, the Toner Cartridge Rack rotates to
the standby position.
K
Y
C
M
K
Y
C
M
M
Y
K
C
M
Y
K
C
s6121mfp-134
Y
M
K
C
Y
M
K
C
M
Y
CK
M
Y
CK
CK
K
MC
YYM
M
Y
K
C
M
Y
K
C
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