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.

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. A difference between the first digital value and the second digital value is greater than the limit parameter.

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.

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.

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.

A liquid cartridge includes: a cartridge body accommodating a reservoir; a liquid-supply part; a movable member movably supported by the cartridge body; an urging member provided on the movable member; and a contact member provided at a surface of the reservoir. The movable member includes a detected part movable from a first position, to a second position rearward of the first position, and to a third position rearward of the second position, the detected part at the first position and at the second position being positioned higher relative to the cartridge body. The urging member is resiliently deformable, the urging member in a deformed state being deformed to urge the detected part toward the third position. The contact member can contact the movable member, the contact member in contact with the movable member restricting the detected part at the second position from moving to the third position.

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.

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.

A logic circuitry package includes an interface to communicate with a print apparatus logic circuit and at least one logic circuit including at least one heater and a temperature sensor. The at least one logic circuit is configured to receive, via the interface, a heater command to address the at least one heater. The at least one logic circuit is configured to receive, via the interface, subsequent to the heater command, a sensor command corresponding to a sensor ID to address the temperature sensor. The at least one logic circuit is configured to transmit, via the interface, a digital value in response to the sensor command. The digital value corresponds to a print material level of a print material within a reservoir.

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.