Bj Cartridge; Color Bj Cartridge (Bc-21E); Black Bj Cartridge (Bc-23) - Canon BJC-5000 Service Manual

BJC-5000

1.3 BJ Cartridge

1.3.1 Color BJ cartridge (BC-21e)

The color BJ cartridge BC-21e for color printing is disposable. The color BJ cartridge
has a printhead with 136 nozzles and a replaceable ink cartridge (two types, black and
color).
When the ink runs out or more than 6 months have elapsed since the cartridge was
removed from the package, or if the print quality does not improve even after cleaning
the head five times or more, replace the ink cartridge with a new one.
Also, if the print quality does not improve following replacement of the ink cartridge
and after cleaning the head five times or more, replace the BJ cartridge. Since the
three color inks are integrated, the entire color ink cartridge must be replaced when
one color ink runs out.
The drop modulation technology minimizes print graininess by using small-size dots
for printing in low density areas. On the other hand, it maintains the printing speed
and achieves high-quality printing by using large-size dots effectively in high density
areas. A total of 136 head nozzles are provided in a row: 24 nozzles for yellow ink, 24
nozzles for magenta ink, 24 nozzles for cyan ink, and 64 nozzles for black ink.
The printer can print out approximately 225 sheets with black ink (1500-character
standard text pattern in the Standard mode) and approximately 100 sheets with color
ink (7.5% duty per color pattern in the Standard mode).

1.3.2 Black BJ cartridge (BC-23)

The black BJ cartridge BC-23 for ultra-high-speed monochrome printing is disposable.
The cartridge consists of a printhead with 128 nozzles and an ink cartridge.
When the ink runs out or more than 6 months have elapsed since the cartridge was
removed from the package, or if the print quality does not improve even after cleaning
the head five times or more, replace the BJ cartridge with a new one.
High-density monochrome printing is enabled with the black BJ cartridge which uses
a newly developed ink. The printer can print approximately 900 sheets with the black
BJ cartridge (1500-character standard text pattern in the Standard mode).
Figure 2-2 Color BJ Cartridge (BC-21e)
Figure 2-3 Black BJ Cartridge (BC-23)
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Part 2: Product Specifications