Sicpa Holding Sa

Silvia Baldi

Paolo Schina

Lucia Giovanola

Anna Merialdo

Danilo Bich

Irma Disegna

Silvano Tori

Agnieszka Kapalka

Jean-Luc Dorier

Mia Milos-Schouwink

Lorenzo Sirigu

Miriam Perini

Xavier Urbaneja

The present invention provides a method for forming a thermal inkjet printhead, comprising at least the following steps: providing a semiconductor wafer including an integrated electronic circuit and a section for forming a thermal actuator element, the integrated circuit comprising at least: a thermal insulating layer formed over a substrate; and a first metal layer formed over the thermal insulating layer; wherein the first metal layer extends into the section for forming the thermal actuator element; and etching a section for forming a thermal actuator element to the first metal layer such that the first metal layer is acting as an etch stop layer. Further there is provided a thermal inkjet printhead formed by a method of the present invention and a semiconductor wafer for forming the thermal inkjet printheads by a method of the present invention.

Method for forming thermal inkjet printhead, thermal inkjet printhead, and semiconductor wafer

The present application relates to a method of manufacturing an ink-jet printhead comprising: providing a silicon substrate () including active ejecting elements (); providing a hydraulic structure layer () for defining hydraulic circuits configured to enable a guided flow of ink; providing a silicon orifice plate () having a plurality of nozzles () for ejection of the ink; assembling the silicon substrate () with the hydraulic structure layer () and the silicon orifice plate (); wherein providing the silicon orifice plate () comprises: providing a silicon wafer () having a planar extension delimited by a first surface () and a second surface () on opposite sides of the silicon wafer (); performing a thinning step at the second surface () so as to remove from the second surface () a central portion () having a preset height (H), the silicon wafer () being formed, following the thinning step, by a base portion () having a planar extension and a peripheral portion () extending from the base portion (), transversally with respect to the planar extension of the base portion (); and forming in the silicon wafer () a plurality of through holes, each defining a respective nozzle () for ejection of the ink. The method according to the present invention is characterized in that the silicon wafer () is a silicon-on-insulator wafer, wherein the silicon-on-insulator wafer comprises a silicon device layer () adjacent to the first surface (), a silicon handle layer () adjacent to the second surface () and an insulator layer () in-between.

Method of manufacturing an ink-jet printhead

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.

Method for liquid authentication by detection of flavonoid derivatives

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

Liquid containing polymer marker, use of a polymer marker as authentication tool, and method and device for detecting a polymer marker dissolved in a liquid

A method of manufacturing an ink jet printhead includes: providing a silicon substrate including active ejecting elements; providing a hydraulic structure layer; providing a silicon orifice plate having a plurality of nozzles for ejection of the ink; and assembling the silicon substrate with the hydraulic structure layer and the silicon orifice plate. Providing the silicon orifice plate includes: providing a silicon wafer having a substantially planar extension delimited by a first and a second surfaces; performing a thinning at the second surface so as to remove a central portion having a preset height; and forming in the silicon wafer a plurality of through holes, each defining a respective nozzle for ejection of the ink.

Method of manufacturing an ink-jet printhead having frusto-pyramidal shaped nozzles

A method of manufacturing an ink jet printhead includes: providing a silicon substrate including active ejecting elements; providing a hydraulic structure layer; providing a silicon orifice plate having a plurality of nozzles for ejection of said ink; and assembling the silicon substrate with said hydraulic structure layer and said silicon orifice plate. Providing the silicon orifice plate comprises: providing a silicon wafer having a substantially planar extension delimited by a first and a second surfaces; performing a thinning step at the second surface so as to remove a central portion having a preset height; and forming in the silicon wafer a plurality of through holes, each defining a respective nozzle for ejection of the ink.

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Samone, Italy

Silvia Baldi