Abstract: A multi-chip module (MCM) assembly comprising: a graphite substrate having a front surface and a back surface and comprising a plurality of silicon chips mounted on the front surface, a Printed Wiring Board (PWB) attached to the graphite substrate and provided with openings surrounding outer profiles of the silicon chips, the graphite substrate comprises one or more ink channels on the back surface and one or more ink feeding slots passing through the graphite substrate and being in fluidic communication with the respective one or more ink channels, so that each of the silicon chips can be fed with one or more different types of inks, the MCM assembly further comprises a graphite cover plate configured to cover the one or more ink channels of the graphite substrate.

Abstract: A multi-chip module (MCM) assembly comprising: a graphite substrate comprising a plurality of silicon chips directly attached to the graphite substrate, and a Printed Wiring Board (PWB) attached to the graphite substrate by means of a solvent-resistant adhesive glue and provided with openings surrounding outer profiles of the silicon chips. A printing bar comprising a plurality of the MCM assemblies is also disclosed.

Abstract: An ink delivery system for at least one printing module comprising a closed-loop ink recirculation circuit and a vacuum discharge circuit, which is configured to produce a vacuum condition in the at least one printing module. A method for delivering ink to the at least one printing module is also disclosed.

Abstract: A multi-chip module (MCM) assembly comprising: a graphite substrate comprising a plurality of silicon chips directly attached to the graphite substrate, and a Printed Wiring Board (PWB) attached to the graphite substrate by means of a solvent-resistant adhesive glue and provided with openings surrounding outer profiles of the silicon chips. A printing bar comprising a plurality of the MCM assemblies is also disclosed.

Abstract: An ink delivery system for at least one printing module comprising a closed-loop ink recirculation circuit and a vacuum discharge circuit, which is configured to produce a vacuum condition in the at least one printing module. A method for delivering ink to the at least one printing module is also disclosed.

Abstract: A multi-chip module (MCM) assembly comprising: a graphite substrate having a front surface and a back surface and comprising a plurality of silicon chips mounted on the front surface, a Printed Wiring Board (PWB) attached to the graphite substrate and provided with openings surrounding outer profiles of the silicon chips, the graphite substrate comprises one or more ink channels on the back surface and one or more ink feeding slots passing through the graphite substrate and being in fluidic communication with the respective one or more ink channels, so that each of the silicon chips can be fed with one or more different types of inks, the MCM assembly further comprises a graphite cover plate configured to cover the one or more ink channels of the graphite substrate.

Abstract: A Liquid, comprising an hydrophobic flavonoid derivative electrochemically non-active, that is capable of restoring its electrochemical activity, the concentration of the flavonoid derivative being 10 ppm by weight or less, and an organic substance in an amount of 90% by weight or more.

Abstract: The present invention relates to markers for liquids that can be used to authenticate the origin and genuineness of a liquid, preferably a bulk liquid such as fuel. For this purpose, the present invention teaches the use of a polymer capable of forming a semiconducting polymer particle (pdot) in the liquid in small amounts. The invention encompasses a liquid comprising a) a polymer that is capable of forming a semiconducting polymer particle (pdot), the concentration of the polymer being 10 ppm by weight or less, and b) an organic substance in an amount of 90% by weight or more. The invention furthermore envisages the use of such a polymer as an authenticating marker in a liquid, preferably a fuel, and a method for authenticating the genuineness and/or origin of a liquid comprising a polymer capable of forming a semiconducting polymer particle (pdot), comprising the steps i. concentrating, isolating and/or extracting the polymer capable of forming a semiconducting polymer particle (pdot); ii.

Abstract: The present application relates to a continuously refillable ink-jet cartridge comprising a housing (2) having a bottom, a circumferential wall and a top, a backpressure element (3) contained in the housing (2), and a pipe (27) configured to inject ink through a mouth (28) into the housing (2). According to the present invention, the mouth (28) of the pipe (27) is located and configured such that it is at least partially surrounded by the backpressure element (3).

Abstract: The present invention provides an ink reservoir 5 including an ink supply interface 2, a duct 3 forming a connection between the ink reservoir 5 and the ink supply interface 2 and a back pressure system. The back pressure system comprises an anisotropic fibrous member 9 for retaining solvent-based ink located within the ink reservoir 5, wherein the fibrous member 9 is established by a plurality of fibers 8. At least some of the fibers are facing the duct 3 leading to the ink supply interface 2.

Abstract: The present application relates to a continuously refillable ink-jet cartridge comprising a housing (2) having a bottom, a circumferential wall and a top, a backpressure element (3) contained in the housing (2), and a pipe (27) configured to inject ink through a mouth (28) into the housing (2). According to the present invention, the mouth (28) of the pipe (27) is located and configured such that it is at least partially surrounded by the backpressure element (3).

Abstract: The present invention relates to markers for liquids that can be used to authenticate the origin and genuineness of a liquid, preferably a bulk liquid such as fuel. For this purpose, the present invention teaches the use of a polymer capable of forming a semiconducting polymer particle (pdot) in the liquid in small amounts. The invention encompasses a liquid comprising a) a polymer that is capable of forming a semiconducting polymer particle (pdot), the concentration of the polymer being 10 ppm by weight or less, and b) an organic substance in an amount of 90% by weight or more. The invention furthermore envisages the use of such a polymer as an authenticating marker in a liquid, preferably a fuel, and a method for authenticating the genuineness and/or origin of a liquid comprising a polymer capable of forming a semiconducting polymer particle (pdot), comprising the steps i. concentrating, isolating and/or extracting the polymer capable of forming a semiconducting polymer particle (pdot); ii.

Abstract: The present invention relates to a protection device for ink-jet printheads, comprising: a tank confining a cavity adapted to contain a humidifying liquid and having a mouth designed to be associated with at least one nozzle of an ink-jet printhead; a seal disposed around the mouth and suitable to be put sealingly in engagement against the printhead and around the nozzle; a mechanism integrated into the tank, for opening or closing the mouth for selectively bringing the mouth into fluid communication with the cavity.

Abstract: A Liquid, comprising an hydrophobic flavonoid derivative electrochemically non-active, that is capable of restoring its electrochemical activity, the concentration of the flavonoid derivative being 10 ppm by weight or less, and an organic substance in an amount of 90% by weight or more.

Abstract: The present invention relates to a protection device for ink-jet printheads, comprising: a tank confining a cavity adapted to contain a humidifying liquid and having a mouth designed to be associated with at least one nozzle of an ink-jet printhead; a seal disposed around the mouth and suitable to be put sealingly in engagement against the printhead and around the nozzle; a mechanism integrated into the tank, for opening or closing the mouth for selectively bringing the mouth into fluid communication with the cavity.

Abstract: The present invention provides a process for manufacturing an ink-jet printhead comprising the steps of providing a print head wafer comprising a plurality of print head dice, each print head die comprising a nozzle plate bonded to a barrier layer formed on a substrate, wherein said plurality of print head dice are arranged on the substrate so as to define at least one first dividing channel comprising at least one first channel portion, said at least one first channel portion having a bottom portion comprised between the lateral sides of said barrier layer of at least two adjacent print head dice and an upper portion comprised between the lateral sides of said nozzle plate of said at least two adjacent print head dice, and applying an adhesive composition in an amount able to substantially fill the whole length of said at least one first channel portion.

Abstract: The invention relates to an ink jet print head structure for printing devices, comprising a substrate in which one or more slots are realized and a nozzle plate connected to the substrate. The nozzle plate defines a first axis (X) and a second perpendicular axis (Y) and comprises a plurality of nozzles from which ink is ejected in fluid communication with the slots. The slots extends along the second axis (Y). A plurality of strip-like stress relief elements is realized on the nozzle plate, the plurality of stress relief elements is disposed so to extend along the Y axis, and each stress relief element of the plurality defines an aperture on a free surface of said nozzle plate. In addition, the total X projections of all apertures defined by the plurality of stress relief elements along the first (X) axis has a resulting length comprised between 10% and 55% of the overall width of the nozzle plate along the same first axis (X).

Abstract: The invention relates to an ink jet print head structure for printing devices, comprising a substrate in which one or more slots are realized and a nozzle plate connected to the substrate. The nozzle plate defines a first axis (X) and a second perpendicular axis (Y) and comprises a plurality of nozzles from which ink is ejected in fluid communication with the slots. The slots extends along the second axis (Y). A plurality of strip-like stress relief elements is realized on the nozzle plate, the plurality of stress relief elements is disposed so to extend along the Y axis, and each stress relief element of the plurality defines an aperture on a free surface of said nozzle plate. In addition, the total X projections of all apertures defined by the plurality of stress relief elements along the first (X) axis has a resulting length comprised between 10% and 55% of the overall width of the nozzle plate along the same first axis (X).

Abstract: The present invention provides a process for manufacturing an ink-jet printhead comprising the steps of providing a print head wafer comprising a plurality of print head dice, each print head die comprising a nozzle plate bonded to a barrier layer formed on a substrate, wherein said plurality of print head dice are arranged on the substrate so as to define at least one first dividing channel comprising at least one first channel portion, said at least one first channel portion having a bottom portion comprised between the lateral sides of said barrier layer of at least two adjacent print head dice and an upper portion comprised between the lateral sides of said nozzle plate of said at least two adjacent print head dice, and applying an adhesive composition in an amount able to substantially fill the whole length of said at least one first channel portion.