A method for inspecting an ink discharge status based on a temperature change of an energy generating element includes calculating a difference value between a value obtained by statistics of information indicating ink discharge statuses obtained for a plurality of nozzles close to a target nozzle and the information obtained for the target nozzle; comparing the calculated difference value with a predetermined threshold; and judging the ink discharge status for the target nozzle based on a result of the comparison. This enables to appropriately detect a nozzle which is in a discharge failure status due to an ink droplet adhered to a discharge surface of a printhead or the like.

A thermal bend actuator includes: a thermoelastic beam for connection to drive circuitry; and a passive beam mechanically cooperating with the thermoelastic beam, such that when a current is passed through the thermoelastic beam, the thermoelastic beam expands relative to the passive beam resulting in bending of the actuator. The thermoelastic beam wherein the thermoelastic beam is comprised of an aluminium alloy. The aluminium alloy comprises a first metal which is aluminium, a second metal, and at least 0.1 at. % of a third metal selected from the group consisting of: copper, scandium, tungsten, molybdenum, chromium, titanium, silicon and magnesium.

A perforate element for use in a print head for non-contact liquid printing comprises: at least one ejection element including an outlet, configured to eject a bulk flow of printing liquid out of the print head; and a liquid residence element, arranged to provide a layer of liquid over the outlet which extends laterally of the outlet and through which the bulk flow is ejected.

An element substrate, according to an embodiment of this present invention, capable of detecting the behavior of a liquid at a high sensitivity, comprises: a first electrothermal transducer configured to generate heat to discharge a liquid; at least one temperature detection element arranged near the first electrothermal transducer; and a second electrothermal transducer configured to generate heat in association with a temperature detection operation by the at least one temperature detection element.

A first supporting member includes a first engaging portion and a second engaging portion that respectively engage with a first engaged portion and a second engaged portion that are provided in a second supporting member. The first engaging portion and the second engaging portion are configured to apply force in directions opposite to the directions in which the first engaged portion and the second engaged portion move when an opening opens.

A liquid ejecting apparatus includes a liquid ejecting head that ejects a liquid supplied from a liquid supplier which has an engaging portion, a container that has an engaging-portion-receiving portion with which the engaging portion engages, and an attaching portion to which the container is detachably attached. The liquid supplier is detachably attached to the attaching portion with movement of the container in a state where the engaging portion has engaged with the engaging-portion-receiving portion. The engaging portion engages with the engaging-portion-receiving portion to be relatively movable in a direction which crosses a movement path of the container when the container is attached to the attaching portion.

An inkjet printhead including: an elongate fluid manifold having a base comprising a plurality of fluid delivery compartments, each compartment having a fluid outlet and a bubble-venting cavity; and one or more printhead chips attached to the base, each printhead chip receiving printing fluid from one or more fluid outlets. Each fluid outlet is aligned with a respective printhead chip and each bubble-venting cavity is offset from the respective printhead chip.

A method of printing, including providing a fluid ejection device that includes a substrate, a plurality of drive units formed on the substrate, each drive unit including at least two drive elements electrically coupled in parallel, and a plurality of fluid ejection elements disposed on the substrate, each fluid ejection element of the plurality of fluid ejection elements electrically coupled with a single respective drive unit. Electrical power is selectively supplied via the plurality of drive units to the plurality of fluid ejection elements to cause fluid to be expelled from the fluid ejection device based on image data.

Printheads and methods for forming printheads are described herein. In one example, a printhead includes a number of drop generators, wherein a pitch between each adjacent drop generator is substantially the same, and the drop generators alternate between a high drop weight (HDW) drop generator and a low drop weight (LDW) drop generator. The printhead also includes a flow channel from an ink source leading into an ejection chamber associated with each drop generator, wherein the flow channel comprises an inflow region proximate to the ink source, wherein an area of the inflow region is adjusted to control the flux of ink into the ejection chamber.

A perforate element (101) for use in a print head for non-contact liquid printing comprises: at least one ejection element (103) including an outlet (103a), configured to eject a bulk flow (F) of printing liquid (L) out of the print head; and a liquid residence element (107), arranged to provide a layer of liquid over the outlet (103a) which extends laterally of the outlet (103a) and through which the bulk flow (F) is ejected.