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: A printable liquid supply cartridge includes a housing enclosing an internal volume. The housing has a front end to connect to a printer and first and second sides extending from the front end to a rear end. The front end has a printable liquid outlet closer to the bottom than to the top and has a gas inlet above the printable liquid outlet, each of the printable liquid outlet and the gas inlet to facilitate insertion of a respective fluid pen therein. There is a recess in the front end above the gas inlet, the recess being delimited by a first wall having an internal side and an external side that is part of the first side. An I2C data interface including at least three electrical connection pads are exposed on the internal side of the first wall facing towards the recess, the connection pads arranged in a top to bottom direction.

Abstract: A horizontal interface for a fluid supply cartridge is to connect the fluid supply cartridge to a fluid-ejection device. The horizontal interface includes one or more fluidic interconnect septums to horizontally fluidically interconnect a supply of fluid of the fluid supply cartridge to the fluid-ejection device. The horizontal interface includes an electrical interface to horizontally conductively connect a digital fluid level sensor of the fluid supply cartridge to a corresponding electrical interface of the fluid-ejection device.

Abstract: A froth coalescing device includes a froth receiving chamber with a vent, and a vertical membrane arranged between the vent and a gas out port of the froth coalescing device. The vent is arranged to vent gas in a direction that is different from a direction of travel of froth in the froth receiving chamber.

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 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 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 vertical interface for a fluid supply cartridge is to connect the fluid supply cartridge to a fluid-ejection device. The vertical interface includes one or more fluidic interconnect septums to vertically fluidically interconnect a supply of fluid of the fluid supply cartridge to the fluid-ejection device. The vertical interface includes an electrical interface to vertically conductively connect a digital fluid level sensor of the fluid supply cartridge to a corresponding electrical interface of the fluid-ejection device.

Abstract: A horizontal interface for a fluid supply cartridge is to connect the fluid supply cartridge to a fluid-ejection device. The horizontal interface includes one or more fluidic interconnect septums to horizontally fluidically interconnect a supply of fluid of the fluid supply cartridge to the fluid-ejection device. The horizontal interface includes an electrical interface to horizontally conductively connect a digital fluid level sensor of the fluid supply cartridge to a corresponding electrical interface of the fluid-ejection device.

Abstract: This disclosure discusses a fluid property sensor, comprising an electrical circuit assembly (ECA) including an external interface coupled to a common interface bus; a fluid level sensor coupled to the common interface bus to indicate a fluid level and/or a pressure sensor coupled to the common interface bus to indicate a pressure event; and/or a driver circuit coupled to the common interface bus, configured to communicate characteristics of the fluid level sensor and the pressure sensor.

Abstract: In one example in accordance with the present disclosure a device for coalescing a frothy fluid is described. The device includes a housing and alignment devices. The alignment devices receive a number of coalescing filters, space the number of coalescing filters to form a gap between adjacent coalescing filters, and seal the number of coalescing filters against the housing to enclose the gap. The device also includes an inlet port to drive incoming frothy fluid through the gap, an outlet port to drain coalesced fluid, and an air vent to allow air to escape the gap.

Abstract: A printable liquid supply cartridge comprises a housing enclosing an internal volume. The housing has a front end to connect to a printer and first and second sides extending from the front end to a rear end. The front end has a printable liquid outlet closer to the bottom than to the top and has a gas inlet above the printable liquid outlet, each of the printable liquid outlet and the gas inlet to facilitate insertion of a respective fluid pen therein. There is a recess in the front end above the gas inlet, the recess being delimited by a first wall having an internal side and an external side that is part of the first side. An I2C data interface comprising at least three electrical connection pads are exposed on the internal side of the first wall facing towards the recess, the connection pads arranged in a top to bottom direction.

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: 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: 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: An integrated circuit for a replaceable print apparatus component comprising a communication interface to communicate with a print apparatus logic circuit over the bus, and at least one logic circuit.

Abstract: In one example a liquid level sensing device is described. The device includes a carrier and a liquid level sensing device disposed on the carrier. The liquid level sensing interface has an aspect ratio of at least 1:50. A number of liquid level sensing components are disposed on the liquid level sensing interface. The number of liquid level sensing components detect a liquid level in a liquid container. The liquid level sensing device also includes an electrical interconnect to output data collected from the number of liquid level sensing components.

Abstract: A logic circuit for a replaceable print component is configured to, in response to a plurality of commands including a first command specifying the new I2C communications address and a first calibration parameter, a second command specifying the new I2C communications address and a second calibration parameter, a third command specifying the new I2C communications address and a class parameter, and/or fourth commands specifying the new I2C communications address and sub-class parameters, and at least one read request, generate count values in a count value range defined by a highest and lowest count value.

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: 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.