Canon BJC 6000 Service Manual - Page 92

Color/Photo BJ Cartridge, 2.2 Construction of the Color and Photo BJ cartridges

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Part 4: Technical Reference BJC-6000 3.2.2 Construction of the Color and Photo BJ cartridges Color and Photo BJ Cartridges come equipped with a multi-drop bubble jet head comprised of 48 nozzles for each of the three colors, for a total of 144 nozzles, and have separate, detachable ink tanks, one for each color. a) Air path Keeps the pressure inside the ink tank constant with the external atmospheric pressure. b) Ink chamber Loaded with ink. The ink in the ink chamber will be supplied via the sponge to the BJ head. A sensor is used to check for ink. c) Ink sponge Saturated with the ink of that color. d) Ink supply pieces Supplies constant quantity of ink to the joint between bubble jet head and ink tank. e) Ink filter Keeps foreign matter from entering the bubble jet head. f) Bubble jet head Consists of 144 nozzles and signal contacts. It discharges the ink supplied color by color from the ink tanks according to the print signals it receives via the signal contacts. Each nozzle has two heater boards inside, one large and one small, for discharging ink. By controlling the driving of the heater boards, multi-drop driving is conducted. Label Air Path Ink Chamber Ink Sponge Ink Supply Pieces Ink Filter Bubble Jet Head Figure4-15 Color/Photo BJ Cartridge 4-20

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3.2.2 Construction of the Color and Photo BJ cartridges
Color and Photo BJ Cartridges come equipped with a multi-drop bubble jet head
comprised of 48 nozzles for each of the three colors, for a total of 144 nozzles, and
have separate, detachable ink tanks, one for each color.
a) Air path
Keeps the pressure inside the ink tank constant with the external atmospheric
pressure.
b) Ink chamber
Loaded with ink.
The ink in the ink chamber will be supplied via the sponge to the
BJ head.
A sensor is used to check for ink.
c) Ink sponge
Saturated with the ink of that color.
d) Ink supply pieces
Supplies constant quantity of ink to the joint between bubble jet head and ink tank.
e) Ink filter
Keeps foreign matter from entering the bubble jet head.
f) Bubble jet head
Consists of 144 nozzles and signal contacts.
It discharges the ink supplied color by
color from the ink tanks according to the print signals it receives via the signal
contacts.
Each nozzle has two heater boards inside, one large and one small, for
discharging ink.
By controlling the driving of the heater boards, multi-drop driving
is conducted.
Part 4: Technical Reference
BJC-6000
4-20
Air Path
Ink Sponge
Bubble Jet Head
Ink Supply Pieces
Ink Filter
Label
Ink Chamber
Figure4-15 Color/Photo BJ Cartridge