Continuous fluid jet ejector with anisotropically etched fluid chambers

A continuous fluid ejection device comprising:

• a substrate having a first surface and a second surface located opposite the first surface;
• a nozzle plate formed over the first surface of the substrate, the nozzle plate having a nozzle through which fluid is ejected;
• a drop forming mechanism situated at the periphery of the nozzle:
• a fluid chamber in fluid communication with the nozzle, the fluid chamber having a first wall and a second wall, the first wall and the second wall being positioned at an angle other than 90° relative to each other;
• a first fluid delivery channel formed in the substrate extending from the second surface of the substrate to the fluid chamber, the first fluid delivery channel being in fluid communication with the fluid chamber, and
• a second fluid delivery channel formed in the substrate extending from the second surface of the substrate to the fluid chamber, the second fluid delivery channel being in fluid communication with the fluid chamber,
• wherein the first fluid delivery channel and second fluid delivery channel are positioned on opposite sides of the nozzle, and
• wherein the first fluid delivery channel and the second fluid delivery channel are positioned equidistant from a center of the nozzle as viewed from a plane perpendicular to the nozzle.

A continuous fluid ejection device comprising:

• a substrate having a first surface and a second surface located opposite the first surface;
• a nozzle plate formed over the first surface of the substrate, the nozzle plate having a nozzle through which fluid is ejected;
• a drop forming mechanism situated at the periphery of the nozzle;
• a fluid chamber in fluid communication with the nozzle, the fluid chamber having a first wall and a second wall, the first wall and the second wall being positioned at an angle other than 90° relative to each other;
• and
• a fluid delivery channel formed in the substrate extending from the second surface of the substrate to the fluid chamber, the fluid delivery channel being in fluid communication with the fluid chamber,
• wherein the drop forming mechanism is a heater.

A continuous fluid ejection device comprising:

• a substrate having a first surface and a second surface located opposite the first surface;
• a nozzle plate formed over the first surface of the substrate, the nozzle plate having a nozzle through which fluid is ejected;
• a drop forming mechanism situated at the periphery of the nozzle;
• a fluid chamber in fluid communication with the nozzle, the fluid chamber having a first wall and a second wall, the first wall and the second wall being positioned at an angle other than 90° relative to each other;
• a fluid deliver channel formed in the substrate extending from the second surface of the substrate to the fluid chamber the fluid deliver channel being in fluid communication with the fluid chamber;
• and
• a deflection mechanism operably associated with the drop forming mechanism.

A method of continuously ejecting fluid comprising:

• providing a fluid ejection device, the fluid ejection device comprising:
• a substrate having a first surface and a second surface located opposite the first surface;
• a nozzle plate formed over the first surface of the substrate, the nozzle plate having a nozzle trough which fluid is ejected;
• a drop forming mechanism situated at the periphery of the nozzle;
• a fluid chamber in fluid communication with the nozzle, the fluid chamber having a first wall and a second wall, the first wall and the second wall being positioned within the fluid chamber at an angle other than 90° relative to each other and extending within the fluid chamber to the first surface;
• and
• a fluid delivery channel formed in the substrate extending from the second surface of the substrate to the fluid chamber, the fluid delivery channel being in fluid communication with the fluid chamber;
• providing a fluid;
• and
• causing the fluid to flow through the fluid ejection device at a pressure sufficient to cause the fluid to be ejected though the nozzle.

A method of continuously ejecting fluid comprising:

• providing a fluid ejection device, the fluid ejection device comprising:
• a substrate having a first surface and a second surface located opposite the first surface;
• a nozzle plate formed over the first surface of the substrate, the nozzle plate having a nozzle through which fluid is ejected;
• a drop forming mechanism situated at the periphery of the nozzle;
• a fluid chamber in fluid communication with the nozzle, the fluid chamber having a first wall and a second wall, the first wall and the second wall being positioned at an angle other than 90° relative to each other;
• and
• a fluid delivery channel formed in the substrate extending from the second surface of the substrate to the fluid chamber, the fluid delivery channel being in fluid communication with the fluid chamber;
• providing a fluid;
• causing the fluid to flow through the fluid ejection device at a pressure sufficient to cause the fluid to be ejected through the nozzle;
• and
• actuating the drop forming mechanism to form a drop of the fluid.