Vent chamber

An imaging device, comprising:

• a print head;
• a pump coupled to the print head;
• first reservoirs coupled to the pump for delivering ink to and receiving ink from the print head under influence of the pump, wherein the pump is fluidly connected between the first reservoirs and the print head and wherein at least two of the first reservoirs contain ink of a different color;
• a receptacle having cavities, individual ones of the cavities being fluidly coupled to individual ones of the first reservoirs, wherein the individual ones of the first reservoirs are fluidly connected between the pump and the receptacle.

A device comprising:

• a fluid ejection mechanism;
• a reservoir;
• a pump fluidly connected to and between the fluid ejection mechanism and the reservoir, the pump being configured to pump fluid between the fluid ejection mechanism and the reservoir;
• a vent chamber fluidly coupled to the reservoir, the vent chamber having a port exposed to atmosphere, wherein the vent chamber has a bottom surface that is sloped relative to the direction of gravity downward to an outlet port at or adjacent the bottom surface and configured to direct fluid out of the vent chamber to the reservoir.

A device comprising:

• a fluid ejection mechanism;
• a reservoir;
• a pump fluidly connected to and between the fluid ejection mechanism and the reservoir, the pump being configured to pump fluid between the fluid ejection mechanism and the reservoir;
• a vent chamber fluidly coupled to the reservoir, the vent chamber having a port exposed to atmosphere, wherein the vent chamber farther comprises a cavity defined by top and bottom surfaces and at least one side surface, the bottom surface being oriented at an angle in the range of 4 to 15 degrees relative to the side surface, wherein the pump is configured to pump fluid from the reservoir into the vent chamber and wherein the pump is configured to pump fluid from the vent chamber to the reservoir.

A device, comprising:

• a fluid ejection mechanism;
• a first reservoir;
• a pump configured to pump fluid between the fluid ejection mechanism and the reservoir;
• a vent chamber fluidly coupled to the reservoir, the vent chamber having a port exposed to atmosphere, wherein the vent chamber comprises:
• a cavity;
• a fluid interface in fluid communication with the cavity and the first reservoir;
• a labyrinth in fluid communication with the cavity and in fluid communication to atmosphere;
• the reservoir fluidly connected between the vent chamber and the pump.

A device, comprising:

• a fluid ejection mechanism;
• a first reservoir;
• a pump configured to pump fluid between the fluid ejection mechanism and the reservoir;
• a vent chamber fluidly coupled to the reservoir, the vent chamber having a port exposed to atmosphere;
• the reservoir fluidly connected between the vent chamber and the pump, the device further comprising:
• a plurality of fluid ejection mechanisms coupled to the pump;
• a plurality of first reservoirs coupled to the pump
• a plurality of vent chambers, each vent chamber being fluidly coupled to at least one of the first reservoirs.

A device, comprising:

• a fluid ejection mechanism;
• a first reservoir;
• a pump configured to pump fluid between the fluid ejection mechanism and the reservoir;
• a vent chamber fluidly coupled to the reservoir, the vent chamber having a port exposed to atmosphere;
• the reservoir fluidly connected between the vent chamber and the pump, the device further comprising:
• top and bottom surfaces of the vent chamber;
• a shelf disposed within the vent chamber between the top and bottom surfaces of the vent chamber;
• a fluidic interface fluidly exposed to the vent chamber between the shelf and the bottom surface of the vent chamber.