Canon BJ-W7000 Service Manual page 104

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B. Ink Supply Principle
1. Ink supply from the ink bottle to the buffer section
2. Ink supply from the buffer section to the bubble jet cartridge
When the amount of ink in the cartridge decreases, the inside pressure in the cartridge is lowered and
the ink is supplied from the buffer section.
Bubble jet cartridge
Ink bottle
Head
about 40mm
Figure 2-602

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