Head cartridge and liquid-ejecting apparatus
First Claim
1. A head cartridge, comprising:
- a liquid-ejecting head ejecting predetermined liquid from liquid-ejecting nozzles formed in a nozzle plate of the liquid-ejecting head;
a liquid-supplying conduit supplying the liquid from a liquid tank to a liquid chamber in the liquid-ejecting head;
a liquid-refluxing conduit refluxing the liquid from the liquid-ejecting head to the liquid tank; and
liquid-circulating means disposed on the liquid-refluxing conduit and circulating the liquid between the liquid-ejecting head and the liquid tank, wherein the liquid-circulating means is driven to generate a negative pressure inside the liquid-ejecting head to circulate the liquid between the liquid-ejecting head and the liquid tank.
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Accused Products
Abstract
A negative pressure generated inside a liquid-ejecting head can circulate liquid between the liquid-ejecting head and a liquid tank, prevent the liquid from leaking out of nozzles while the liquid is circulating, and remove bubbles contained in the liquid. A head cartridge includes a printhead ejecting ink from ink-ejecting nozzles formed in a nozzle plate of the printhead, an ink-supplying conduit supplying the ink from an ink tank to an ink chamber in the printhead, an ink-refluxing conduit refluxing the ink from the printhead to the ink tank, and a liquid-delivering pump disposed on the ink-refluxing conduit and circulating the ink between the printhead and the ink tank. The liquid-delivering pump is driven to generate a negative pressure inside the printhead to circulate the ink between the printhead and the ink tank.
19 Citations
19 Claims
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1. A head cartridge, comprising:
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a liquid-ejecting head ejecting predetermined liquid from liquid-ejecting nozzles formed in a nozzle plate of the liquid-ejecting head;
a liquid-supplying conduit supplying the liquid from a liquid tank to a liquid chamber in the liquid-ejecting head;
a liquid-refluxing conduit refluxing the liquid from the liquid-ejecting head to the liquid tank; and
liquid-circulating means disposed on the liquid-refluxing conduit and circulating the liquid between the liquid-ejecting head and the liquid tank, wherein the liquid-circulating means is driven to generate a negative pressure inside the liquid-ejecting head to circulate the liquid between the liquid-ejecting head and the liquid tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A liquid-ejecting apparatus, comprising:
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a head cartridge detachably disposed in the apparatus body, wherein the head cartridge comprises a liquid-ejecting head ejecting predetermined liquid from liquid-ejecting nozzles formed in a nozzle plate of the liquid-ejecting head, a liquid-supplying conduit supplying the liquid from a liquid tank to a liquid chamber in the liquid-ejecting head, a liquid-refluxing conduit refluxing the liquid from the liquid-ejecting head to the liquid tank, and liquid-circulating means disposed on the liquid-refluxing conduit and circulating the liquid between the liquid-ejecting head and the liquid tank;
the liquid-circulating means is driven to generate a negative pressure inside the liquid-ejecting head to circulate the liquid between the liquid-ejecting head and the liquid tank; and
each of the liquid-ejecting nozzles formed in the liquid-ejecting head of the head cartridge ejects the predetermined liquid to produce a dot or a dot line. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A liquid-ejecting apparatus, comprising:
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a liquid-ejecting head ejecting predetermined liquid from liquid-ejecting nozzles formed in a nozzle plate of the liquid-ejecting head;
a liquid-supplying conduit supplying the liquid from a liquid tank to a liquid chamber in the liquid-ejecting head;
a liquid-refluxing conduit refluxing the liquid from the liquid-ejecting head to the liquid tank; and
liquid-circulating means disposed on the liquid-refluxing conduit and circulating the liquid between the liquid-ejecting head and the liquid tank, wherein the liquid-circulating means is driven to generate a negative pressure inside the liquid-ejecting head to circulate the liquid between the liquid-ejecting head and the liquid tank.
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Specification