Canon BJC-55 Series, Service Bulletin

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1.3 BJ Cartridge
1.3.1 Color BJ cartridge [BC-11e]
The BC-11e color BJ cartridge used for color printing is disposable. It comprises the
print head with 136 nozzles and the replaceable ink cartridges (black and color).
The heater board inside the printhead is located one in front of the other to separately
print large and small ink droplets.
If a print defect occurs, do a head cleaning. If print quality is not restored, try again
once or twice. If the problem persists, perform a head refreshing. [Cleaning: 2 beep,
with
RESUME button; Head refreshing: 3 beeps, with RESUME button] If the head
refreshing cannot restore the print quality, replace the BJ head.
If the ink runs out or if more than six months have passed after the BJ cartridge was
unsealed and the print quality is not improved by cleaning the print head once or
twice, the ink cartridge should be replaced with a new one. Also the three ink color
integrated type cartridge must be replaced if one of the inks runs out.
The head has a total of 136 nozzles in a line: 24 yellow nozzles, 24 magenta nozzles,
24 cyan nozzles, and 64 black nozzles.
Numbers of sheets printed
Black: Approx. 23 sheets (HQ mode, 7.5% duty per color pattern)
Color: Approx. 30 sheets (HQ mode, 7.5% duty per color pattern)
BJ cartridge is printed with high quality at 360 dpi.
2-3
BJC-50
Part 2: Product Specifications
Figure 2-2 Color BJ Cartridge [BC-11 e]