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公开(公告)号：US20220072855A1
公开(公告)日：2022-03-10
申请号：US17419061
申请日：2019-04-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Marta Blanch Pinol , Diana Canto Estany , Eduardo Amela Conesa
Abstract: A printing apparatus is disclosed. The printing apparatus comprises a printhead and a controller. The printhead includes an array of nozzles, each having an actuator to eject a printing fluid, the array of nozzles having a first and a second subset of nozzles, wherein the first subset is located at the vicinity of an edge of the printhead. The controller is to assign a firing mask so that the actuators corresponding to the first subset of nozzles are instructed to eject the printing fluid with a higher energy level than the actuators corresponding to the second subset of nozzles.
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公开(公告)号：US11186105B2
公开(公告)日：2021-11-30
申请号：US16761397
申请日：2017-11-13
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Marta Blanch , Diana Canto Estany , Eduardo Amela Conesa
IPC: B41J11/00 , B41J25/308
Abstract: An example method to determine the change of a print medium due to heat dilatation or contraction is described. In that example the thickness before and after heating is determined and an offset value may be calculated to calibrate a print head to print medium distance.
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公开(公告)号：US20210362514A1
公开(公告)日：2021-11-25
申请号：US16493023
申请日：2018-06-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Santiago Sanz Ananos , Juan Uroz , Eduardo Amela Conesa , Francisco Lopez Moral , Marta Blanch Pinol , Diana Canto Estany
Abstract: Method and devices for dynamically preventing printing errors caused by a media deformation are disclosed. In one example, a pen to print media space (PPS) distance is measured. A media deformation is identified in response to measuring the PPS distance. A corrective function is identified in response to identifying the media deformation. The corrective function identified is then performed. The proposed method provides for consistent quality across a print.
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公开(公告)号：US20200346474A1
公开(公告)日：2020-11-05
申请号：US16761397
申请日：2017-11-13
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Marta Blanch , Diana Canto Estany , Eduardo Amela Conesa
IPC: B41J25/308 , B41J11/00
Abstract: An example method to determine the change of a print medium due to heat dilatation or contraction is described. In that example the thickness before and after heating is determined and an offset value may be calculated to calibrate a print head to print medium distance.
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公开(公告)号：US11652926B2
公开(公告)日：2023-05-16
申请号：US17416539
申请日：2019-06-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eduardo Amela Conesa , Diana Canto Estany , Marta Blanch Pinol
CPC classification number: H04N1/00023 , H04N1/00068 , H04N1/3935 , H04N1/6038
Abstract: A method of digital printing is disclosed in which a digital image to be printed has at least one region having pixels comprising superpositioned layers of a first ink and a second ink. The method includes producing at least one sample print and calibrating misalignment of the superpositioned layers at a plurality of calibration locations on the sample print. The resultant misalignment data is provided to a morphing program to pre-deform the digital image to provide a modified digital image which compensates for misalignment during printing. The image is then printed using the modified digital image. An apparatus and a machinereadable storage medium comprising instructions executable by a processor are also disclosed.
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Patent Agency Ranking
公开(公告)号：US20190143695A1
公开(公告)日：2019-05-16
申请号：US16098111
申请日：2016-07-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Sheila Cabello , Diana Canto Estany , Macia Sole
Abstract: A print head monitoring system includes a fly-by spitting station, the fly-by spitting station receiving droplet of printing agent from a print head when the print head passes over the fly-by spitting station, and a drop detector which is located at the fly-by spitting station.
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公开(公告)号：US20220143985A1
公开(公告)日：2022-05-12
申请号：US17416539
申请日：2019-06-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eduardo Amela Conesa , Diana Canto Estany , Marta Blanch Pinol
Abstract: A method of digital printing is disclosed in which a digital image to be printed has at least one region having pixels comprising superpositioned layers of a first ink and a second ink. The method includes producing at least one sample print and calibrating misalignment of the superpositioned layers at a plurality of calibration locations on the sample print. The resultant misalignment data is provided to a morphing program to pre-deform the digital image to provide a modified digital image which compensates for misalignment during printing. The image is then printed using the modified digital image. An apparatus and a machine readable storage medium comprising instructions executable by a processor are also disclosed.
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公开(公告)号：US11318735B2
公开(公告)日：2022-05-03
申请号：US16493023
申请日：2018-06-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Santiago Sanz Ananos , Juan Uroz , Eduardo Amela Conesa , Francisco Lopez Moral , Marta Blanch Pinol , Diana Canto Estany
Abstract: Method and devices for dynamically preventing printing errors caused by a media deformation are disclosed. In one example, a pen to print media space (PPS) distance is measured. A media deformation is identified in response to measuring the PPS distance. A corrective function is identified in response to identifying the media deformation. The corrective function identified is then performed. The proposed method provides for consistent quality across a print.
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公开(公告)号：US11318680B2
公开(公告)日：2022-05-03
申请号：US16477871
申请日：2017-04-24
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eduardo Amela Conesa , Marta Blanch Pinol , Diana Canto Estany
IPC: B29C64/393 , B33Y30/00 , B33Y50/02 , B29C64/209 , B41J2/21
Abstract: A method is described in which a sequence of print orders is determined. The sequence is to be associated to print elements to be generated by ejecting printing material from nozzles. The method comprises controlling the generation of the print elements by ejecting printing material from the nozzles according to the determined sequence.
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公开(公告)号：US20220143973A1
公开(公告)日：2022-05-12
申请号：US17418961
申请日：2019-07-24
Applicant: Hewlett-Packard Development Company, L.P.
Abstract: Example implementations relate to controllers and printers to operate at least one liquid ejection device of a printhead; the liquid ejection device comprising a nozzle and an associated print liquid chamber bearing a transducer to eject print liquid from the nozzle in response to a firing signal; the print chamber being fluidically coupled to a nozzle supply channel; the at least one liquid ejection device comprising a channel coupled to the print liquid chamber and the nozzle supply channel; the channel having a respective actuator to urge print liquid through the print chamber in response to a circulation signal; wherein the controller comprises temperature control circuitry to actuate the respective actuator using a temperature control signal to increase the temperature of print liquid in the print liquid chamber.
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