Abstract: In one example in accordance with the present disclosure, a method is described. According to the method, a pump is selectively activated to draw print fluid from a print fluid delivery system towards a reclamation container. It is detected when a reservoir of the print fluid delivery system is empty. In response to an indication that the reservoir is empty, the pump is selectively deactivated to terminate a print fluid reclamation process.

Abstract: A print liquid supply apparatus or interface structure to be connected to a print system comprises a liquid channel, liquid interface and integrated circuit contact pads.

Abstract: A print liquid supply apparatus or interface structure to be connected to a print system comprises a liquid channel, liquid interface and integrated circuit contact pads.

Abstract: According to examples, an apparatus may include a chassis having an interior region and a first printing fluid reservoir arranged within the interior region of the chassis. The chassis may fix the first printing fluid reservoir relative to a second printing fluid reservoir. The apparatus may also include a bottle seat that may define a charging port in fluidic communication to the first printing fluid reservoir to convey refill printing fluid received at the charging port to the first printing fluid reservoir. A fluidic interface may be arranged on the chassis and fluidically coupled to the first printing fluid reservoir to convey the printing fluid outside the chassis to a print head.

Abstract: In some examples a printing system includes purging manifolds. The printing system includes a fluid ejection device to dispense a fluid and a first reservoir to house a fluid. The system further includes a purging manifold to fluidically couple to the fluid ejection device, and the purging manifold to fluidically couple to the first reservoir. The purging manifold includes a second reservoir. The purging manifold further includes a supply port; a fluid inlet port; and a purging outlet port. The purging outlet port is disposed above the supply port to convey fluid to the first reservoir. The printing system also includes a fluid interface connector to fluidically connect to the supply port and fluidically connect to the fluid ejection device.

Abstract: In one example in accordance with the present disclosure, a print fluid delivery system is described. The print fluid delivery system includes a main reservoir to hold a volume of print fluid to be supplied to a printhead and a fluid indicator reservoir fluidly coupled to the main reservoir. The fluid indicator reservoir visually indicates a fluid level through an aperture in a printing system housing. The fluid indicator reservoir and the main reservoir have a same fluid level. The print fluid delivery system also includes a fluid transport system to transport fluid through the print fluid delivery system.

Abstract: In one example in accordance with the present disclosure, a print fluid refill system is described. The print fluid refill system includes a reservoir to hold a volume of print fluid to be supplied to a printhead. The print fluid refill system also includes a pump to 1 ) draw print fluid from the reservoir via a reservoir line and 2) transport print fluid to a reserve tank via a reserve line. The print fluid refill system also includes the reserve tank to, during refill of the reservoir, supply print fluid to a printhead via a printhead line. The reserve tank supplies print fluid to the printhead when fluid is passed to the reservoir via a return line.

Abstract: An example printing apparatus includes a reservoir to contain a printing agent. The printing apparatus further includes a recovery port to receive connection of a recovery vessel and to communicate flow of the printing agent from the reservoir to the recovery vessel during a recovery operation. The printing apparatus further includes a recovery pump to pump the printing agent from the reservoir through the recovery port to the recovery vessel during the recovery operation. The printing apparatus further includes a vacuum pump at the reservoir to reduce pressure in the reservoir to below atmospheric pressure during the recovery operation to draw unrecovered printing agent away from the recovery port when the recovery vessel is removed from the recovery port.

Abstract: In one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. A return line of the fluid extraction system is to connect the interface and a reservoir of the printing device. The fluid extraction system includes a switch to 1) responsive to attachment of the removable extraction reservoir to the printing device, open the return line to direct fluid form the reservoir to the interface and 2) responsive to removal of the removable extraction reservoir from the printing device, close the return line.

Abstract: An example printing system includes a housing with an interior, a printing fluid reservoir arranged within the interior of the housing, a charging conduit fluidly coupled to the printing fluid reservoir, and a bottle seat. The bottle seat is fixed to the housing and defines a charging port. The charging port is in fluid communication with the printing fluid reservoir through the charging conduit to convey refill printing fluid received at the charging port to the printing fluid reservoir through the charging conduit. Methods of refilling printing systems are also described.

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 one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. A supply line of the fluid extraction system transports fluid from the interface to a reservoir of the printing device. A return line of the fluid extraction system is coupled to the reservoir and supply line and transports fluid from the reservoir to the interface. The fluid extraction system also includes a switch to, responsive to removal of the removable extraction reservoir from the printing device, activate a fill pump to draw fluid through the supply line away from the interface.

Abstract: A print liquid supply apparatus or interface structure to be connected to a print system comprises a liquid channel, liquid interface and integrated circuit contact pads.

Abstract: An example printing apparatus includes a reservoir to contain a printing agent. The printing apparatus further includes a recovery port to receive connection of a recovery vessel and to communicate flow of the printing agent from the reservoir to the recovery vessel during a recovery operation. The printing apparatus further includes a recovery pump to pump the printing agent from the reservoir through the recovery port to the recovery vessel during the recovery operation. The printing apparatus further includes a vacuum pump at the reservoir to reduce pressure in the reservoir to below atmospheric pressure during the recovery operation to draw unrecovered printing agent away from the recovery port when the recovery vessel is removed from the recovery port.

Abstract: In one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. A return line of the fluid extraction system is to connect the interface and a reservoir of the printing device. The fluid extraction system includes a switch to 1) responsive to attachment of the removable extraction reservoir to the printing device, open the return line to direct fluid form the reservoir to the interface and 2) responsive to removal of the removable extraction reservoir from the printing device, close the return line.

Abstract: In one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. A supply line of the fluid extraction system transports fluid from the interface to a reservoir of the printing device. A return line of the fluid extraction system is coupled to the reservoir and supply line and transports fluid from the reservoir to the interface. The fluid extraction system also includes a switch to, responsive to removal of the removable extraction reservoir from the printing device, activate a fill pump to draw fluid through the supply line away from the interface.

Abstract: A print liquid supply apparatus or interface structure to be connected to a print system comprises a liquid channel, liquid interface and integrated circuit contact pads.

Abstract: In one example, a liquid delivery system for an inkjet type dispenser includes a printhead unit, a reservoir separate from the printhead unit, a first flow path from the reservoir to the printhead unit, an interconnect to connect to a removable liquid container, a second flow path from the interconnect to the reservoir, and a valve movable between a first position in which the first flow path is open and the second flow path is closed and a second position in which the first flow path is closed and the second flow path is open.

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: 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.