A print head for printer comprises a marking portion to show a marketing that is indicative of a position of the print head in a print head housing, wherein the print head receives the marking due to physical contact with the print head housing.

A print liquid supply interface structure is provided, to fluidically connect a fluid supply container to a receiving station, comprising a liquid channel having at least one liquid channel wall, the liquid channel including a liquid interface, and at least one key pen next and parallel to the needle receiving portion of the liquid channel. In another example a key pen structure is provided. In yet another example an interface structure for receiving a separate key pen is provided.

In a state in which a cartridge body is not inserted in a cartridge receiving section provided on a printer side, an electronic component mounting section is held at an initial position to the cartridge body. The cartridge body is linearly inserted into the cartridge receiving section of the printer along a first direction, which is an insertion direction of the cartridge body, to a second position before a first position in which the cartridge body is in a mounted state in the cartridge receiving section. By the cartridge body being linearly inserted from the second position to the first position along the first direction, the electronic component mounting section is moved from the initial position in a second direction different from the first direction to couple the electronic component to electrical coupling portions provided on the printer side.

A printer includes: a first ink tank; a second ink tank, both mounted on an X-Y plane; and a window that enables a liquid level of each of the first and second ink tanks to be visually checked from an outside of the printer, the window being disposed in an X-Z plane or a Y-Z plane. The X-Y plane, X-Z plane and Y-Z plane are defined by X-, Y-, and Z-axes, which are mutually orthogonal to. Each of the first and second ink tanks includes a first segment and a second segment, the first segment for arranging the first ink tank and the second ink tank side by side in a direction along the Y-axis, the second segment positioned out of alignment with the first segment in the X-axis direction. At least one of the first segment and the second segment has a visual check section facing the window.

A printing device may include an input port to interface with a supply simulator; and a drain fluidic interface to interface with a removable extraction reservoir simultaneously with the coupling of the supply simulator with the input port; the supply simulator comprising a memory device to transfer data related to an amount of fluid transferred between the printing device and the removable extraction reservoir.

A printing device may include an input port to interface with a supply simulator; and a drain fluidic interface to interface with a removable extraction reservoir simultaneously with the coupling of the supply simulator with the input port; the supply simulator comprising a memory device to transfer data related to an amount of fluid transferred between the printing device and the removable extraction reservoir.

In one embodiment a print liquid supply apparatus is provided to supply liquid to a liquid needle of a receiving station comprising a liquid container including an at least partially collapsible liquid reservoir an interface structure at a side of the container, including a liquid channel that includes a reservoir connecting portion that fluidically connects to the reservoir and a needle receiving portion to allow the liquid to flow from the reservoir to the needle; a liquid interface of the liquid channel adjacent the needle receiving portion and at a distance from the reservoir connecting portion, a front wall and/or edge adjacent the liquid interface including a push area which is disposed between the liquid interface and the container; and at least one key pen base and key pen protruding from the base in a direction parallel and opposite to the needle insertion direction; and a contact pad array next to the needle receiving liquid channel portion. In another example a sub-assembly of such apparatus is provided.

Aspects of a disclosure relates to a liquid discharge device enables previously disabled liquid discharge through a head after a cartridge including a first liquid chamber is replaced and before the liquid level in a second liquid chamber of a tank reaches a predetermined level or higher. Another aspects of the disclosure relates to a liquid discharge device that deactivates an alarm after a cartridge including a first liquid chamber is replaced and before the liquid level in a second liquid reaches a predetermined level or higher.

A circuit board for a printing cartridge, having a number of contact surfaces, wherein two or more of the contact surfaces are arranged in a first row, two or more of the contact surfaces are arranged in a second row, the first row is at a distance from the second row, and the contact surfaces of the second row are designed to apply a higher operating voltage than the contact surfaces of the first row.

An ink cartridge and a printing apparatus using the same. The ink cartridge includes an ink cartridge body, a chip and a chip holder, and the chip is fixed on the chip holder; when the ink cartridge is installed on the printer along an installation direction, the printer may drive the chip holder to linearly move along a top surface of the ink cartridge body, the chip holder is located at a first position before linearly moving and located at a second position after linearly moving; the chip at the first position is closer to the top surface of the ink cartridge body than at the second position, and when the chip holder is at the second position, the chip abuts against the stylus. The ink cartridge and printing apparatus achieve a higher stability of the electrical connection of the chip and the stylus in a printer.