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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Conta; Renato
Address:
Ivrea, IT
No. of patents:
37
Patents:












Patent Number Title Of Patent Date Issued
8109614 Process for protectively coating hydraulic microcircuits against aggressive liquids, particulary February 7, 2012
An ink jet printhead, made of a silicon substrate and a plurality of metallic and dielectric layers deposited on said substrate. A plurality of chambers for ejection of ink droplets and a plurality of corresponding feeding ducts, connected to the chambers, are produced in a structural
7984978 Parallel ink jet printing device and relative manufacturing July 26, 2011
The printing device is ink jet, parallel or serial-parallel type and comprises a plurality of ejection modules each of which with ejection chambers suitable for containing ink and with associated relative heating elements for ink ejection control. The device includes a support and a
7637598 Printhead with multiple ink feeding channels December 29, 2009
A thermal ink jet printhead (40) for the emission of droplets of ink on a print medium (46) comprises a reservoir (103) containing ink (142), a die (61), a slot (102) engraved in said die (61) and a plurality of ejectors (73), each of which in turn comprises a chamber (74), a resistor (2
7595004 Ink jet printhead and relative manufacturing process September 29, 2009
The chambers (42) and each corresponding ink feeding duct (56), made in a structural layer of photosensitive resin (38), are delimited by a flat bottom wall (36) made of a protective layer (34, 36) of tantalum and gold and an upper wall (44), consisting of a substantially concave surface
7533463 Process for manufacturing a monolithic printhead with truncated cone shape nozzles May 19, 2009
A process for manufacturing a monolithic thermal ink jet printhead (40) comprising a plurality of chambers (74) and of nozzles (56), comprises steps of (206) depositing a plurality of sacrificial layers (31), of obtaining, by means of exposure and development operations, a plurality
7401521 Pressure sensor with integrated structure July 22, 2008
Pressure sensor with an integrated structure comprising a support (33, 133, 233) and a silicon die (11), which lies substantially on the same plane as the upper surface (37, 137, 237) of the support and is integrated in a seat (34, 134, 234) made in the thickness of the support. On t
7367655 Integrated printhead with encoding circuit May 6, 2008
Ink jet printhead comprising a driving and encoding circuit (20) having a grid-like structure, including a plurality of inputs (24), a plurality of selecting elements (12), a plurality of actuating elements (IC) and at least one identifying element (21) of said printhead. Each identifyin
7338580 Monolithic printhead with multiple ink feeder channels and relative manufacturing process March 4, 2008
A thermal ink jet printhead (40) for the emission of drops of ink on a print medium (46) comprises a tank (103) containing ink (142), a lamina (67), a groove (45) and a plurality of ejectors (73), each of which comprises in turn a chamber (74) placed laterally with respect to the gro
7332100 Process for protectively coating hydraulic microcircuits against agressive liquids, particularly February 19, 2008
Process for protectively coating against aggressive liquids hydraulic microcircuits made in a resin, particularly for an ink jet printhead, consisting of: disposing of a silicon substrate comprising a sacrificial layer of copper, deposited on the substrate and defining the inner shape
7279111 Monolithic printhead with built-in equipotential network and associated manufacturing method October 9, 2007
An actuating assembly (50) for ink jet printheads consists of a silicon die (61), which comprises a groove (45) and a lamina (64), and of a structure (75) produced monolithically in the same production process. The actuating assembly (50) comprises a microhydraulics (63), the latter
7275814 Monolithic printhead with multiple ink feeder channels and relative manufacturing process October 2, 2007
A thermal ink jet printhead (40) for the emission of drops of ink on a print medium (46) comprises a tank (103) containing ink (142), a lamina (67), a groove (45) and a plurality of ejectors (73), each of which comprises in turn a chamber (74) placed laterally with respect to the gro
7255799 Method for selectively covering a micro machined surface August 14, 2007
On a die that has etchings on a surface, firstly a sheet of negative photoresist is laid down which, by means of an exposure and subsequent development, is left only above the etchings; then, upon the negative photoresist, a positive photoresist is applied, which is subjected to expo
7229157 Process for construction of a feeding duct for an ink jet printhead June 12, 2007
In an ink jet printhead, the ink feeding duct (2), passing through the thickness of the silicon substrate, and in hydraulic communication with the ejection cells (8) through an outlet area (2a) on the front surface (5) of the substrate (3), is built in three successive stages of erosion
7159969 Composite ink jet printhead and relative manufacturing process January 9, 2007
The composite printhead (1) is made up of an active module (7), consisting of a thin plate (8) of silicon, on which a plurality of chambers (14) is produced, housing corresponding heating resistors (10), electrically connected through an interconnection network to corresponding external
7070261 Monolithic printhead with built-in equipotential network and associated manufacturing method July 4, 2006
An actuating assembly (50) for ink jet printheads consists of a silicon die (61), which comprises a groove (45) and a lamina (64), and of a structure (75) produced monolithically in the same production process. The actuating assembly (50) comprises a microhydraulics (63), the latter
7066581 Monolithic printhead with self-aligned groove and relative manufacturing process June 27, 2006
A monolithic thermal ink jet printhead (40) comprising a groove (45), a plurality of chambers (74) and nozzles (56) is manufactured by means of steps of: (203, 205) partially etching the groove (45) by means of a "dry" process and a "wet" process; (210) depositing a plurality of sacr
7052116 Printhead with multiple ink feeding channels May 30, 2006
A thermal ink jet printhead (40) for the emission of droplets of ink on a print medium (46) comprises a reservoir (103) containing ink (142), a die (61), a slot (102) engraved in said die (61) and a plurality of ejectors (73), each of which in turn comprises a chamber (74), a resistor (2
7008047 Substrate for a thermal ink jet printhead, a colour printhead in particular, and ink jet printhe March 7, 2006
A substrate (10; 110; 210; 310) for an ink jet printhead comprising: at least three slots (12a, 12b, 12c) of elongated shape, oriented parallel to one another lengthwise in a vertical direction (13); three corresponding actuating banks (16a, 16b, 16c); a plurality of drive circuits (
6988791 Ejection head for aggressive liquids manufactured by anodic bonding January 24, 2006
A method for manufacturing an ejection head (10) or ejector suitable for ejecting in the form of droplets (16) a liquid (14) conveyed inside the ejection head (10), comprising a step of producing, from a silicon wafer, a nozzle plate (12) having at least one ejection nozzle (13); a step
6949201 Process for manufacturing a monolithic printhead with truncated cone shape nozzles September 27, 2005
A process for manufacturing a monolithic thermal ink jet printhead (40) comprising a plurality of chambers (74) and of nozzles (56), comprises steps of (206) depositing a plurality of sacrificial layers (31), of obtaining, by means of exposure and development operations, a plurality of
6887393 Monolithic printhead with self-aligned groove and relative manufacturing process May 3, 2005
A monolithic thermal ink jet printhead (40) comprising a groove (45), a plurality of chambers (74) and nozzles (56) is manufactured by means of steps of: (203, 205) partially etching the groove (45) by means of a "dry" process and a "wet" process; (210) depositing a plurality of sacrific
6851791 Polychromatic printhead February 8, 2005
This invention relates to a printhead in which a plurality of resistors are selectively activated by an external control circuit to produce the ejection of droplets of ink through nozzles located in correspondence with the resistors. Selection and activation are performed according to a
6780340 Ejection head for aggressive liquids manufactured by anodic bonding August 24, 2004
A method for manufacturing an ejection head (10) or ejector suitable for ejecting in the form of droplets (16) a liquid (14) conveyed inside the ejection head (10), comprising a step of producing, from a silicon wafer, a nozzle plate (12) having at least one ejection nozzle (13); a step
6719913 Printhead with multiple ink feeding channels April 13, 2004
A thermal ink jet printhead (40) for the emission of droplets of ink on a print medium (46) comprises a reservoir (103) containing ink (142), a die (61), a slot (102) engraved in said die (61) and a plurality of ejectors (73), each of which in turn comprises a chamber (74), a resistor (2
6565175 Integrated printhead May 20, 2003
This invention relates to an integrated printhead (20) for ink jet printers, wherein the addressing of the various nozzles is effected in at least 3-D mode. The head (20) comprises a plurality of groups (24) of ink jet elements (21, 22) arranged in M rows and L columns wherein, in pa
6508530 Aligning method for multiple ink jet color printheads with built-in optoelectronic position dete January 21, 2003
The single heads (40) mounted on a single print carriage of an ink jet printer comprise a column (50) of phototransistors (51-i), built directly into the chip of each head in the same process steps as used for the circuits for selecting and driving the actuating resistors; an illumin
6497470 Ink jet printhead with large size silicon wafer and relative manufacturing process December 24, 2002
An actuator assembly (81) for ink jet printheads, both monochromatic and colour, with a large number of nozzles (62), consists of a die (58) stuck on a rigid substrate (166) and divided into two parts lengthwise to permit the flow of ink from the tank to the nozzles (62), and a flat cabl
6371591 Alignment system for multiple color ink jet printheads and associated printhead with built-in op April 16, 2002
The individual monochromatic printheads mounted simultaneously on the scanning carriage of an ink jet printer are provided with an opto-electronic position detector of the four-quadrant type, which is integrated directly in the chip of each head by means of the same MOS technology us
6371589 Device for controlling energy supplied to an emission resistor of a thermal ink jet printhead April 16, 2002
In a thermal ink jet printhead, an emission resistor includes a layer of electrically conductive material for making connections to the resistor. A temperature sensor and a reference temperature sensor, provided for detecting the temperature of enucleation of a bubble and used to directl
5119115 Thermal ink jet print head with removable ink cartridge June 2, 1992
In a thermal ink jet print head the ink is expelled in the form of small drops through a plurality of nozzles communicating with corresponding expulsion chambers for expulsion of the ink through the effect of rapid heating of heater elements contained in the expulsion chambers. The n
4834637 Manufacture of tubular elements for ink jet printers May 30, 1989
The apparatus for manufacturing ink jet glass tubes includes a vertical mandrel which receives the tubes one at a time from a feeder and rotates them relative to a pair of gas nozzles for their heating. The tube is heated in an axially limited intermediary zone so as to form an hour-glas
4783670 Ink jet print head and manufacture thereof November 8, 1988
The head comprises a hollow body (21) carrying a series of capillary tubes (12) of rigid material, on to each of which is fixed a sleeve-type piezoelectric transducer (16). A resin (26) is injected into the hollow body so as to encase first portions of the transducers. A flexible printed
4675043 Apparatus for manufacture of tubular elements for ink jet printers June 23, 1987
The apparatus for manufacturing the ink jet glass tubes includes a vertical mandrel which receives the tubes one at a time from a feeder and rotates them relative to a pair of gas nozzles for their heating. The tube is heated in an axially limited intermediary zone so as to form an hour-
4623904 Ink-jet printing head, a method for its manufacture, and a tool useable for carrying out this me November 18, 1986
Mounted within a substantially hollow supporting and containing housing are tubes which communicate at one end with an ink reservoir and whose opposite ends are aligned with respective ink discharge nozzles provided in a plate member which faces the printing surface in use. The plate is
4393591 Optical transducer July 19, 1983
An optical transducer for determining the angular position of a rotating member relative to a fixed structure, comprises a notched disc 13 rotatable inside a support housing 12, a light emitter 18 and a plurality of photovoltaic cells 19 for detecting the passage of light through the
4385306 Dot writing head for high definition printers, and a method of manufacturing the same May 24, 1983
The head is composed of a series of electrically conductive elements in one or more rows, which elements are selectively subjected to a high potential relative to the coacting electrode.The elements have a thickness of less than to 50.mu. and a pitch less than 100.mu.. The elements may b
3967092 Electrothermal print head June 29, 1976
A removably mountable electrothermal print head for writing dots-matrix characters while moving along a thermosensitive recording medium and a mounting for the hand or a movable carriage of a printer, the head comprises a plurality of electrically energizable resistive printing eleme










 
 
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