Abstract: An example printing fluid pen comprises a plurality of fluid ports, including an inlet port to direct fluid from a fluid reservoir to a fluid ejection device, and a recirculation port to direct fluid from the fluid ejection device out of the inkjet pen. The example pen also includes a plurality of parallel fluid pressure regulators fluidly coupled with the inlet port, each of the plurality of parallel fluid pressure regulators to receive fluid from the inlet fluid port.

Abstract: A pressure regulator apparatus usable with an aerosol supply device containing a fluid includes an inflatable diaphragm unit including an upper surface member, a lower surface member, and a diaphragm chamber formed between the upper surface member and the lower surface member, an output port member having an output cavity and an output port, at least a portion of the output port member is disposed within and in fluid communication with the diaphragm chamber, a valve actuator including an actuator cavity and one or more actuator openings in fluid communication with the output port, at least a portion of the valve actuator is moveably disposed within the output cavity, an input port member having an input port configured to allow the fluid to enter the actuator cavity, at least a portion of the input port member is disposed proximate to the actuator cavity, and an axial flow path extending between the input port and the output port, and configured to allow the fluid to selectively pass in a substantially axial

Abstract: A pressure regulator apparatus usable with an aerosol supply device containing a fluid includes an inflatable diaphragm unit including an upper surface member, a lower surface member, and a diaphragm chamber formed between the upper surface member and the lower surface member, an output port member having an output cavity and an output port, at least a portion of the output port member is disposed within and in fluid communication with the diaphragm chamber, a valve actuator including an actuator cavity and one or more actuator openings in fluid communication with the output port, at least a portion of the valve actuator is moveably disposed within the output cavity, an input port member having an input port configured to allow the fluid to enter the actuator cavity, at least a portion of the input port member is disposed proximate to the actuator cavity, and an axial flow path extending between the input port and the output port, and configured to allow the fluid to selectively pass in a substantially axial

Abstract: Damage is prevented in printing systems by allowing fluid from the printing system's fluid delivery system to expand. In one embodiment, this is accomplished by fluidly connecting a fluid expansion receptacle to the fluid delivery system. The fluid expansion receptacle provides volumetric compliance so that if printing fluid in the system expands, such as due to freezing, the fluid is able to expand into the fluid expansion receptacle and not damage the printing system.

Abstract: Embodiments of an apparatus including a rolling contact bearing are disclosed.

Abstract: A check valve includes two opposing sheets surfaces that are coupled together to form a flow channel there between. The flow channel has a first end, a second end and at least one curved portion in between the first and second ends. A first opening is provided at the first end of the flow channel and a second opening is provided at the second end of the flow channel.

Abstract: A printhead assembly includes a carrier having a fluid manifold defined therein, a plurality of printhead dies each mounted on the carrier and communicating with the fluid manifold, and a fluid delivery assembly coupled with the carrier and communicating with the fluid manifold.

Abstract: A printhead assembly includes a carrier having a fluid manifold defined therein, a plurality of printhead dies each mounted on the carrier and communicating with the fluid manifold, and a fluid delivery assembly coupled with the carrier and communicating with the fluid manifold.