An inkjet head may include the following. A plurality of ink emitters, each including, an ink storage, a pressure changer which changes pressure in the ink stored in the ink storage, a nozzle which is connected to the ink storage and which emits ink according to a change in pressure in the ink in the ink storage, a plurality of precedent stage individual discharge flow paths which are connected to one ink storage and through which ink discharged without being supplied from the ink storage to the nozzle passes, and a subsequent stage individual discharge flow path to which, the plurality of precedent stage individual discharge flow paths join. A common discharge flow path may be connected to the plurality of subsequent stages individual discharge flow paths included in the plurality of ink emitters, and the ink which passes through the plurality of subsequent stage individual discharge flow paths flows.

Provided are an inkjet printing device and a printing method capable of grasping a position of a non-product image, such as a jetting state monitoring pattern, on a continuous medium. An inkjet printing device includes a medium transport mechanism that transports a continuous medium (12) in a medium transport direction, an inkjet head that prints a user image on the continuous medium, one or more processors, and one or more memories that are connected to the processors and store commands which are able to be executed by using the processors, in which the processor reads out the command from the memory and prints non-product image position information (304) including information on a position of a non-product image (302) printed on the continuous medium in the continuous medium at a position (12A) on a downstream side of a region in which the non-product image is printed in the medium transport direction.

A liquid ejecting apparatus includes a first head having a first channel pipe, a channel member having a second channel pipe, and a first tube that communicates the first channel pipe with the second channel pipe and that has flexibility. The first tube has a first end portion and a second end portion that is opposite to the first end portion. The first tube is coupled to the first channel pipe in such a manner that the first end portion covers an outer periphery of the first channel pipe. The first tube is also coupled to the second channel pipe in such a manner that the second end portion covers an outer periphery of the second channel pipe. A fixation strength between the first tube and the first channel pipe is greater than a fixation strength between the first tube and the second channel pipe.

A head module includes: a head including: a nozzle plate having a nozzle from which a liquid is to be discharged; a channel substrate including an individual channel communicating with the nozzle, the nozzle plate bonded to a first bonding surface of the channel substrate; and a cover covering at least one side of a discharge surface of the nozzle plate of the head. The channel substrate has a size larger than the nozzle plate, the cover has a second bonding surface bonded to the first bonding surface of the channel substrate at an outer region of the nozzle plate with an adhesive, the discharge surface of the nozzle plate is liquid-repellent, and the first bonding surfaces of the channel substrate and the second bonding surface of the cover are lyophilic.

The present invention relates to an ink-jet print heads protecting system in a digital printing machine, wherein the module comprises a chassis (1), rollers (2), and a plurality of digital printing units (10), each with a bridge (11) with guides (12) and a sliding carriage (13) with ink-jet print heads (14), one part of each guide overlapping the band and another part projecting beyond the band path, the carriage being movable between the printing and maintenance positions; and in that each bridge is attached to the chassis by of a position adjustment device (20) and an articulation (25) that are spaced apart or by two position adjustment devices (20) that are spaced apart.

A liquid ejection head includes an ejection opening; a passage in which an energy generation element is disposed; an ejection opening portion that allows communication between the ejection opening and the passage; a supply passage for allowing the liquid to flow into the passage; and an outflow passage for allowing the liquid to flow out to the outside. An expression of H.sup.−0.34×P.sup.−0.66×W>1.7 is satisfied when a height of the passage is set to H [μm], a length of the ejection opening portion is set to P [μm], and a length of the ejection opening portion is set to W [μm].

A head includes: a silicon substrate; an insulating film on the silicon substrate; an electrode wiring on the insulating film; a flexible wiring connected to the electrode wiring; and a conductive film electrically connects the flexible wiring and the electrode wiring in a bonding area. The silicon substrate has an exposed area on a surface of the silicon substrate facing the insulating film, and the exposed area is in a vicinity of the bonding area and is exposed from the insulating film.

Provided are an inkjet printing apparatus and a recovery method capable of suppressing ink thickening in the ejection openings in the suction process for the ejection openings. A vacuum wiper is moved being in contact with the ejection opening surface of the print head to perform a vacuum wiping process for the arrayed ejection openings sequentially. Ink is circulated in flow paths including the flow paths communicating with the ejection openings for which the vacuum wiping process has been finished.

There is provided an ink jet recording apparatus that can correct bending of an ink jet head with a compact structure. First supporting frames 122 that support ink jet heads 110C, 110M, 110Y, and 110K and second supporting frames 170 that support a part of ink supply sections supplying ink to the ink jet heads 110C, 110M, 110Y, and 110K are mounted on a mount 300. The first supporting frames 122 are mounted on the mount 300 while both end portions of the first supporting frames 122 in a longitudinal direction are supported. Each of the second supporting frames 170 is provided with a bending correction mechanism 340 that applies a pressing force to the first supporting frame 122 to correct the bending of the first supporting frame 122.

A liquid discharge head includes: a channel substrate having a nozzle and a channel communicating with the nozzle; a driving element arranged on the channel substrate; and a driving signal generating circuit which generates a driving signal to drive the driving element. The driving signal includes a non-discharge driving signal by which the driving element is driven so that liquid in the channel is not discharged from the nozzle. The non-discharge driving signal includes at least one first slight-vibration waveform and at least one second slight-vibration waveform. The first slight-vibration waveform is a waveform by which the driving element is displaced by a first displacement amount. The second slight-vibration waveform is a waveform by which the driving element is displaced by a second displacement amount that is larger than the first displacement amount. The at least one second slight-vibration waveform follows after the at least one first slight-vibration waveform.