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公开(公告)号：US11667128B2
公开(公告)日：2023-06-06
申请号：US17046877
申请日：2018-05-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eric Martin , Terry McMahon , Donald W Schulte
IPC: B41J2/175 , H01L23/62 , H01L27/092 , H01L29/06 , H03K17/687
CPC classification number: B41J2/17566 , H01L23/62 , H01L27/092 , H01L29/0619 , B41J2002/17579 , H03K17/6871
Abstract: A fluidic die includes fluid chambers, each including an electrode exposed to an interior of the fluid chamber and each having a corresponding fluid actuator operating at a high voltage. The fluidic die further includes monitoring circuitry, operating at a low voltage relative to the fluid actuator, to monitor a condition of each fluid chamber, for each chamber the monitoring circuitry including a connection structure and a select transistor and a pulldown transistor connected to the electrode via the connection structure. The connection structure and select and pulldown transistors together structured to form electrically conductive paths with electrical resistances to protect at least the select transistor from fault damage if the high voltage fluid actuator short-circuits to the electrode.
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公开(公告)号：US10933634B2
公开(公告)日：2021-03-02
申请号：US16301132
申请日：2016-08-03
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Anthony M Fuller , Terry McMahon , Donald W Schulte , Amy Gault
Abstract: A conductive wire disposed in a layer is described. An example apparatus includes a die including a silicon layer and a first layer coupled to the silicon layer. The example apparatus a conductive wire disposed in the first layer adjacent a perimeter of a location at which a fluid feed slot is to be formed in the silicon layer. The conductive wire has an electrical characteristic that corresponds to whether the fluid feed slot is defective.
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公开(公告)号：US10814629B2
公开(公告)日：2020-10-27
申请号：US16305528
申请日：2016-09-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Anthony M Fuller , Terry McMahon , Donald W Schulte
Abstract: In one example in accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device includes a substrate and a number of nozzles formed within the substrate to eject fluid. A number of bond pads are disposed on the substrate and are electrically coupled to the number of rows of nozzles. A termination ring is disposed on the substrate and surrounds the rows of nozzles. The termination ring includes a first metallic layer that is an enclosed shape and a second metallic layer that is disposed on top of the first metallic layer. The second metallic layer includes a gap positioned adjacent the number of bond pads.
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公开(公告)号：US10752015B2
公开(公告)日：2020-08-25
申请号：US16323219
申请日：2016-10-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Reynaldo V Villavelez , Terry McMahon , Donald W Schulte
Abstract: In some examples, a heater assembly for a pattern forming system includes a support, and heating elements mounted on the support, where the heating elements are to, in response to activation of the heating element, produce heat directed towards a target to form a pattern on the target. A heat sink is thermally connected to the heating elements and comprising a pattern of heat dissipation surfaces comprising channels to dissipate heat produced by the heating elements.
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公开(公告)号：US20210146695A1
公开(公告)日：2021-05-20
申请号：US17046877
申请日：2018-05-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eric Martin , Terry McMahon , Donald W Schulte
IPC: B41J2/175 , H01L23/62 , H01L29/06 , H01L27/092
Abstract: A fluidic die includes fluid chambers, each including an electrode exposed to an interior of the fluid chamber and each having a corresponding fluid actuator operating at a high voltage. The fluidic die further includes monitoring circuitry, operating at a low voltage relative to the fluid actuator, to monitor a condition of each fluid chamber, for each chamber the monitoring circuitry including a connection structure and a select transistor and a pulldown transistor connected to the electrode via the connection structure. The connection structure and select and pulldown transistors together structured to form electrically conductive paths with electrical resistances to protect at least the select transistor from fault damage if the high voltage fluid actuator short-circuits to the electrode.
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Patent Agency Ranking
公开(公告)号：US20200269581A1
公开(公告)日：2020-08-27
申请号：US16305528
申请日：2016-09-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Anthony M Fuller , Terry McMahon , Donald W Schulte
Abstract: In one example in accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device includes a substrate and a number of nozzles formed within the substrate to eject fluid. A number of bond pads are disposed on the substrate and are electrically coupled to the number of rows of nozzles. A termination ring is disposed on the substrate and surrounds the rows of nozzles. The termination ring includes a first metallic layer that is an enclosed shape and a second metallic layer that is disposed on top of the first metallic layer. The second metallic layer includes a gap positioned adjacent the number of bond pads.
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公开(公告)号：US10421275B2
公开(公告)日：2019-09-24
申请号：US15520743
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Donald W Schulte , Terry McMahon , Tony Fuller , Stan E Leigh
Abstract: A fluid ejecting device including a die including a perimeter defined by a first edge, a second edge opposing the first edge, a third edge, and a fourth edge opposing the third edge, wherein the third and fourth edges are disposed at an angle to the first and second edges to form angular corners, an active area including circuitry for controlling the fluid ejecting device to eject fluid, an inactive area positioned between the perimeter and the active area, and a termination ring encircling the active area, the termination ring including sides extending parallel to the first, second, third, and fourth edges and corners coupling adjacent sides, the corners having a corner radius greater than a first distance between the first edge and one of the sides of the termination ring, and a nozzle to eject fluid.
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公开(公告)号：US20190248157A1
公开(公告)日：2019-08-15
申请号：US16323219
申请日：2016-10-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Reynaldo V Villavelez , Terry McMahon , Donald W Schulte
CPC classification number: B41J2/345 , B41J2/3358
Abstract: In some examples, a heater assembly for a pattern forming system includes a support, and heating elements mounted on the support, where the heating elements are to, in response to activation of the heating element, produce heat directed towards a target to form a pattern on the target. A heat sink is thermally connected to the heating elements and comprising a pattern of heat dissipation surfaces comprising channels to dissipate heat produced by the heating elements.
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公开(公告)号：US20190210366A1
公开(公告)日：2019-07-11
申请号：US16301132
申请日：2016-08-03
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Anthony M Fuller , Terry McMahon , Donald W Schulte , Amy Gault
CPC classification number: B41J2/1433 , B41J2/14072 , B41J2/1601 , B41J2/162 , B41J2/1629 , B41J2/1634 , B41J2002/14491 , G01N27/20
Abstract: A conductive wire disposed in a layer is described. An example apparatus includes a die including a silicon layer and a first layer coupled to the silicon layer. The example apparatus a conductive wire disposed in the first layer adjacent a perimeter of a location at which a fluid feed slot is to be formed in the silicon layer. The conductive wire has an electrical characteristic that corresponds to whether the fluid feed slot is defective.
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公开(公告)号：US20170313065A1
公开(公告)日：2017-11-02
申请号：US15520743
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Donald W Schulte , Terry McMahon , Tony Fuller , Stan E Leigh
Abstract: A fluid ejecting device including a die including a perimeter defined by a first edge, a second edge opposing the first edge, a third edge, and a fourth edge opposing the third edge, wherein the third and fourth edges are disposed at an angle to the first and second edges to form angular corners, an active area including circuitry for controlling the fluid ejecting device to eject fluid, an inactive area positioned between the perimeter and the active area, and a termination ring encircling the active area, the termination ring including sides extending parallel to the first, second, third, and fourth edges and corners coupling adjacent sides, the corners having a corner radius greater than a first distance between the first edge and one of the sides of the termination ring, and a nozzle to eject fluid.
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