Managing bubbles in a fluid-delivery device

A fluid ejecting system comprising:

• a fluid-feed channel configured to supply fluid to a plurality of ejection chambers, individual ejection chambers comprising a resistor configured to eject fluid from the individual ejection chamber;
• and,
• a processor configured to cause an individual resistor to be energized at a first intensity sufficient to eject fluid from a respective ejection chamber, the processor further configured to cause the resistor to be energized at a second lower intensity which heats the resistor but does not cause fluid to be ejected from the respective ejection chamber, and wherein the processor can energize, at the second lower intensity level, individual resistors in a pattern designed to detach a bubble from a surface defining a portion of the fluid-feed channel.

A method comprising:

• positioning a filter relative to a fluid supply path of a micro electro mechanical systems device so that fluid passes through the filter before reaching one or more ejection chambers of the micro electro mechanical systems device;
• and,
• configuring a processor to energize one or more electrical components at an intensity primarily selected to heat but not to vaporize the fluid, wherein the processor is configured to energize the electrical components in a pattern designed primarily to move a pre-existing bubble located between the electrical components and the filter to a location where the bubble can pass through the filter.

One or more computer-readable media having computer-readable instructions thereon which, when executed, cause a micro electro mechanical systems device to:

• energize a first electrical component at an intensity selected primarily to heat but not to vaporize fluid contained in the micro electro mechanical systems device;
• and,
• energize at least one different electrical component at an intensity selected primarily to heat but not to vaporize fluid contained in the micro electro mechanical systems device, wherein the first electrical component and the at least one different electrical component are energized in a pattern designed to move a bubble in a desired direction within the micro electro mechanical systems device.

One or more computer-readable media having computer-readable instructions thereon which, when executed by a micro electro mechanical systems device, cause the micro electro mechanical systems device to:

• energize a first set of electrical components to eject fluid from the micro electro mechanical systems device;
• and,
• energize a second set of electrical components at an intensity selected primarily to heat but not to vaporize fluid contained in the micro electro mechanical systems device, wherein the second set of electrical components are energized in a pattern designed to move a bubble in a desired direction within the micro electro mechanical systems device.

A device comprising:

• means for selectively ejecting fluid from a fluid-delivery device;
• and,
• means for heating fluid contained in the fluid-delivery device in a contaminant moving pattern designed to move a contaminant contained in the fluid-ejecting device without ejecting fluid from the fluid-delivery device.