Fluid supply tank ventilation for a micro-fluid ejection head
DCFirst Claim
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1. A fluid supply tank for a micro-fluid ejection head, the fluid supply tank comprising:
- a body portion for holding a fluid to be ejected, the body portion having a fluid exit port on an exit end thereof and a cover on an opposing end thereof of the body portion, the cover having an opening in fluid communication with atmosphere;
an internal vent conduit disposed between the exit end and the cover for removing air adjacent to the fluid exit port and releasing the air through the cover to said atmosphere; and
an air space in the fluid exit port wherein the internal vent conduit is in air flow communication with the air space and the cover.
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Abstract
An improved fluid supply tank for a micro-fluid ejection head and method for improving operation of a micro-fluid ejection device. The fluid supply tank has a body portion for holding a fluid to be ejected. The body portion includes a fluid exit port on an exit end thereof and a cover on an opposing end thereof. An internal vent conduit is disposed in the tank between the exit end and the cover for air removal adjacent to the exit port.
49 Citations
18 Claims
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1. A fluid supply tank for a micro-fluid ejection head, the fluid supply tank comprising:
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a body portion for holding a fluid to be ejected, the body portion having a fluid exit port on an exit end thereof and a cover on an opposing end thereof of the body portion, the cover having an opening in fluid communication with atmosphere; an internal vent conduit disposed between the exit end and the cover for removing air adjacent to the fluid exit port and releasing the air through the cover to said atmosphere; and an air space in the fluid exit port wherein the internal vent conduit is in air flow communication with the air space and the cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for enhancing the operation of a micro-fluid ejection device, comprising:
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disposing an internal vent conduit in a fluid supply container for the micro-fluid ejection device, wherein the vent conduit is disposed in air flow communication between an air space of a fluid exit end of the container and a container cover opposite the fluid exit end, the container cover having an opening in fluid communication with atmosphere; and installing the fluid supply container on the micro-fluid ejection device so that any trapped air between the container and the device is urged to said atmosphere through the internal vent conduit through an atmospheric vent in the cover. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification