Abstract: A printable liquid supply cartridge includes a printable liquid reservoir extending between a first side and a second side, and between a front end and a rear end. The front end includes a printable liquid outlet to receive a first fluid pen and a gas inlet, above the printable liquid outlet, to receive a second fluid pen. The front end also includes an interface support at the first side, the support having an I2C data interface that includes electrical connection pads exposed on an interior side of the support to face from the first side towards the second side, the electrical connection pads being arranged vertically and to make contact with the printer data interface at least partially inserted into the second portion.

Abstract: A logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit, and at least one logic circuit. The logic circuit may be configured to identify, from a command stream received from the print apparatus, parameters including a class parameter, and/or identify, from the command stream, a read request, and output, via the interface, a count value in response to a read request, the count value based on identified received parameters.

Abstract: A printable liquid supply cartridge includes a printable liquid reservoir extending between a first side and a second side, and between a front end and a rear end. The front end includes a printable liquid outlet to receive a first fluid pen and a gas inlet, above the printable liquid outlet, to receive a second fluid pen. The front end also includes an interface support at the first side, the support having an I2C data interface that includes electrical connection pads exposed on an interior side of the support to face from the first side towards the second side, the electrical connection pads being arranged vertically and to make contact with the printer data interface at least partially inserted into the second portion.

Abstract: A printable liquid supply cartridge includes a printable liquid reservoir extending between a first side and a second side, and between a front end and a rear end. The front end includes a printable liquid outlet to receive a first fluid pen and a gas inlet, above the printable liquid outlet, to receive a second fluid pen. The front end also includes an interface support at the first side, the support having an I2C data interface that includes electrical connection pads exposed on an interior side of the support to face from the first side towards the second side, the electrical connection pads being arranged vertically and to make contact with the printer data interface at least partially inserted into the second portion.

Abstract: A logic circuitry package for a replaceable print apparatus component includes an interface to communicate with a print apparatus logic circuit, and at least one logic circuit to transmit, via the interface, a sensor ID parameter and a limit parameter, the sensor ID parameter indicating a first sensor ID. The logic circuit is to receive, via the interface, a first request corresponding to the first sensor ID with the component connected to the apparatus and the apparatus not pneumatically actuating the component. The logic circuit is to transmit, via the interface, a first digital value in response to the first request. The logic circuit is to receive, via the interface, a second request corresponding to the first sensor ID with the component connected to the apparatus and the apparatus pneumatically actuating the component. The logic circuit is to transmit, via the interface, a second digital value in response to the second request.

Abstract: A logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit, and at least one logic circuit. The logic circuit may be configured to identify, from a command stream received from the print apparatus, parameters including a class parameter, and/or identify, from the command stream, a read request, and output, via the interface, a count value in response to a read request, the count value based on identified received parameters.

Abstract: A froth coalescing unit for a fluid delivery system for a fluid ejection system, the froth coalescing unit including a coalescing chamber including a sump, an inlet to receive froth into the coalescing chamber, the froth comprising a mixture of fluid and gas, the coalescing chamber to coalesce the fluid from the froth with the coalesced fluid collecting at least in the sump, an outlet to communicate coalesced fluid from the sump, and a fluid level sensor to provide a level over a range of levels of coalesced fluid in the coalescing chamber including in the sump.

Abstract: In an example, a method includes, by logic circuitry associated with a replaceable print apparatus component installed in a print apparatus, responding to a sensor data request received from the print apparatus by returning a first response; receiving a calibration parameter from the print apparatus; and returning a second response which is different from the first response.

Abstract: A logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit, and at least one logic circuit. The logic circuit may be configured to identify, from a command stream received from the print apparatus, parameters including a class parameter, and/or identify, from the command stream, a read request, and output, via the interface, a count value in response to a read request, the count value based on identified received parameters.

Abstract: A froth coalescing device comprises a froth receiving chamber with a vent and an umbrella valve arranged between the vent and a gas out port. The vent may be arranged to vent gas in a direction different from a direction of travel of froth in the receiving chamber.

Abstract: A logic circuitry package for a replaceable print apparatus component includes an interface to communicate with a print apparatus logic circuit, and a logic circuit having a communication address to communicate with the print apparatus logic circuit. The logic circuit is configured to detect, via the interface, communications that include an other communication address. The logic circuit is configured to respond, via the interface, to a command series directed to the logic circuit that include the communication address of the logic circuit, based on the detected communications.

Abstract: A fluid property sensor may comprising an integrated circuit (IC) including a fluid level sensor, and/or a pressure sensor; and an external interface electrically coupled to a proximal end of the EC, wherein the pressure sensor may be configured to measure a flexure of the fluid property sensor.

Abstract: A logic circuitry package for a replaceable print apparatus component includes an interface to communicate with a print apparatus logic circuit and at least one logic circuit to transmit, via the interface, a limit parameter and a count threshold parameter. The logic circuit is to receive, via the interface, initial requests to read sensor IDs with the component connected to the apparatus and the apparatus not pneumatically actuating the component. The logic circuit is to transmit, via the interface, a resting state digital value in response to each initial request. The logic circuit is to receive, via the interface, further requests to read the sensor IDs with the component connected to the apparatus and the apparatus pneumatically actuating the component. The logic circuit is to transmit, via the interface, a further digital value in response to each further request.

Abstract: This disclosure describes integrated circuits which may be provided in logic circuitry packages and/or replaceable print apparatus components with print material reservoirs. An integrated circuit or logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit and at least one logic circuit.

Abstract: A sensor circuit for a replaceable print apparatus component comprises an interface to transmit signals with respect to a print apparatus logic circuit, and further comprises, connected to the interface, at least two sensor cell arrays, each array including nominally the same cells, the cells of one array being nominally different than the cells of the other array, and at least one single cell sensor that is nominally different than the other cells.

Abstract: A printable liquid supply cartridge includes a printable liquid reservoir extending between a first side and a second side, and between a front end and a rear end. The front end includes a printable liquid outlet to receive a first fluid pen and a gas inlet, above the printable liquid outlet, to receive a second fluid pen. The front end also includes an interface support at the first side, the support having an I2C data interface that includes electrical connection pads exposed on an interior side of the support to face from the first side towards the second side, the electrical connection pads being arranged vertically and to make contact with the printer data interface at least partially inserted into the second portion.

Abstract: In one example, a fluid property sensor includes an electrical circuit assembly (ECA), an elongated circuit (EC), and an external interface. The EC is attached to the ECA and includes multiple point sensors distributed along a length of the EC. The external interface is electrically coupled to a proximal end of the EC. The EC and the external interface are packaged together with an encasement on both sides of the ECA to form the fluid property sensor.

Abstract: A logic circuitry package for a replaceable print apparatus component includes an interface to communicate with a print apparatus logic circuit, and at least one logic circuit to receive, via the interface, requests corresponding to different sensor IDs with the component connected to the apparatus. The logic circuit is to transmit, via the interface, a digital value in response to each request. The digital values corresponding to the different sensor IDs are distinct.

Abstract: In one example in accordance with the present disclosure, a fluid interface device (106) is described. The device includes a collar (110) to receive a fluid container (104). The collar has an aperture in one end surface. A needle (108) of the fluid interface device passes through the aperture and allows fluid to pass from the fluid container (104) into a reservoir (102). The needle is slideable within the aperture from a dosed position to an open position upon reception of the fluid container. A seal (212) is radially disposed around the needle (108) and seals against the end surface of the collar (110) when the needle is in the dosed position.