Abstract: A mechanical fastener for an electrical interface may include a first handle and a second handle The first handle and second handle are located on opposite sides of the mechanical fastener. The mechanical fastener may also include a first housing, a second housing coupled to the first housing, an electrical interface housed in the mechanical fastener between the first and second housings, a first lever intermediary between the first handle and the first housing and mechanically coupled to the second handle, a second lever intermediary between the second handle and the second housing and mechanically coupled to the first handle, a first post coupled to the first handle and the second lever, and a second post coupled to the second handle and the first lever.

Abstract: In some examples, a fluid dispensing assembly removably mountable in a fluid dispensing system includes a body and a fluidic die attached to the body. A vent is arranged on the body to direct cooling airflow generated by an external airflow generator that is external of and separate from the fluid dispensing assembly into an inner portion of the fluid dispensing assembly, the inner portion being within the body.

Abstract: In some examples, a fluid ejection assembly is removably mountable in a system, and includes a fluid ejection device, and a removable frame on which the fluid ejection device is mounted. The removable frame includes a plurality of fluid interface members that share a common design to releasably engage with a plurality of fluid interface connectors together as the removable frame is brought into engagement with a support structure in the system and on which the plurality of fluid interface connectors are mounted. Engagement of a first fluid interface member with a first fluid interface connector establishes a gas path through the first fluid interface member and the first fluid interface connector, and engagement of a second fluid interface member with a second fluid interface connector establishes a liquid path through the second fluid interface member and the second fluid interface connector, the liquid path to deliver a liquid to the fluid ejection device.

Abstract: In some examples, a fluid dispensing assembly removably mountable in a fluid dispensing system includes a body and a fluidic die attached to the body. A vent is arranged on the body to direct cooling airflow generated by an external airflow generator that is external of and separate from the fluid dispensing assembly into an inner portion of the fluid dispensing assembly, the inner portion being within the body.

Abstract: A mechanical fastener for an electrical interface may include a first handle and a second handle The first handle and second handle are located on opposite sides of the mechanical fastener. The mechanical fastener may also include a first housing, a second housing coupled to the first housing, an electrical interface housed in the mechanical fastener between the first and second housings, a first lever intermediary between the first handle and the first housing and mechanically coupled to the second handle, a second lever intermediary between the second handle and the second housing and mechanically coupled to the first handle, a first post coupled to the first handle and the second lever, and a second post coupled to the second handle and the first lever.

Abstract: In some examples, a fluid ejection assembly is removably mountable in a system, and includes a fluid ejection device, and a removable frame on which the fluid ejection device is mounted. The removable frame includes a plurality of fluid interface members that share a common design to releasably engage with a plurality of fluid interface connectors together as the removable frame is brought into engagement with a support structure in the system and on which the plurality of fluid interface connectors are mounted. Engagement of a first fluid interface member with a first fluid interface connector establishes a gas path through the first fluid interface member and the first fluid interface connector, and engagement of a second fluid interface member with a second fluid interface connector establishes a liquid path through the second fluid interface member and the second fluid interface connector, the liquid path to deliver a liquid to the fluid ejection device.

Abstract: Controlling adhesives between substrates and carriers includes forming a depression into a bonding area of a backside surface of a substrate of a print head where the bonding area being formed proximate an ink feed slot formed through the thickness of the substrate from the backside surface to a front side surface; placing an adhesive between the bonding area and a substrate carrier, and moving the substrate and the substrate carrier together such that the adhesive flows into the depression.

Abstract: Controlling adhesives between substrates and carriers includes forming a depression into a bonding area of a backside surface of a substrate of a print head where the bonding area being formed proximate an ink feed slot formed through the thickness of the substrate from the backside surface to a front side surface; placing an adhesive between the bonding area and a substrate carrier, and moving the substrate and the substrate carrier together such that the adhesive flows into the depression.

Abstract: Controlling adhesives between substrates and carriers includes forming a depression into a bonding area of a backside surface of a substrate of a print head where the bonding area being formed proximate an ink feed slot formed through the thickness of the substrate from the backside surface to a front side surface; placing an adhesive between the bonding area and a substrate carrier, and moving the substrate and the substrate carrier together such that the adhesive flows into the depression.

Abstract: In one example, a printhead assembly datum includes stationary first and second points and a movable third point that define a datum plane for the printhead assembly. The stationary first and second points define a line in the datum plane and the third point is movable so that the datum plane pivots on the line in response to movement of the third point. In another example, a printhead assembly includes a body, a printhead attached to the body, and a datum for adjusting a position of the printhead relative to a component external to the printhead assembly. The datum is formed by first, second, and third datum points on the body that define a triangle representing a datum plane that is tiltable on the base of the triangle by moving the vertex opposite the base.

Abstract: In one example, a printhead assembly datum includes stationary first and second points and a movable third point that define a datum plane for the printhead assembly. The stationary first and second points define a line in the datum plane and the third point is movable so that the datum plane pivots on the line in response to movement of the third point. In another example, a printhead assembly includes a body, a printhead attached to the body, and a datum for adjusting a position of the printhead relative to a component external to the printhead assembly. The datum is formed by first, second, and third datum points on the body that define a triangle representing a datum plane that is tiltable on the base of the triangle by moving the vertex opposite the base.

Abstract: Controlling adhesives between substrates and carriers includes forming a depression into a bonding area of a backside surface of a substrate of a print head where the bonding area being formed proximate an ink feed slot formed through the thickness of the substrate from the backside surface to a front side surface; placing an adhesive between the bonding area and a substrate carrier, and moving the substrate and the substrate carrier together such that the adhesive flows into the depression.