Patents by Inventor Andrei Alexandru Dafinoiu
Andrei Alexandru Dafinoiu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11872811Abstract: Example implementations relate to a method to manage printhead operational life; the method comprising firing at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid, measuring a parameter associated with the drop of print liquid, and adjusting the firing parameter in response to the measuring to reduce the measured parameter associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.Type: GrantFiled: June 7, 2019Date of Patent: January 16, 2024Assignee: Hewlett-Packard Developmen Company, L.P.Inventors: Antonio Gracia Verdugo, Andreu Vinets Alonso, Andrei Alexandru Dafinoiu
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Publication number: 20230321995Abstract: Examples relate to a computer implemented method comprising, based on a vulnerable nozzle map indicating one or more operational nozzles of a printhead identified as meeting a failure likelihood criterion, during a print job, and between successive print passes of the printhead, checking operation of the one or more operational nozzles indicated on the vulnerable nozzle map.Type: ApplicationFiled: July 14, 2020Publication date: October 12, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Andrei Alexandru DAFINOIU, Andreu VINETS ALONSO, David TOUSSAINT
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Publication number: 20230286308Abstract: The present disclosure relates to methods and devices for performing print control. In an example there is disclosed a control method. The control method may comprise programming a print mask to instruct printhead nozzles on a moveable carriage to deposit a first line of print material on a medium, wherein the print mask controls the depositing so that an edge of an area of the medium on which material is deposited defines a pattern which is repeated along a scan axis of the carriage and which differs in a direction of movement of the medium. The control method may further comprise scanning the first line of print material. The control method may further comprise performing control of subsequent print material depositing or medium advancement, based on the scan.Type: ApplicationFiled: July 21, 2020Publication date: September 14, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Carlota GALINDO QUINTAS, Andrei Alexandru DAFINOIU, Antonio GRACIA VERDUGO
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Patent number: 11745502Abstract: In an example, a printing apparatus includes a controller, wherein the controller may be to compare a historic usage of a first printhead nozzle with a historic usage of a second printhead nozzle which is located on a same printhead as the first nozzle. The controller may be to determine that the historic usage of the first nozzle is higher than the historic usage of the second nozzle, and in response identify a currently operational third printhead nozzle, for which the second nozzle is able to compensate; and turn off the third nozzle, and operate the second nozzle at a higher firing frequency to compensate for the third nozzle.Type: GrantFiled: July 15, 2019Date of Patent: September 5, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Antonio Gracia Verdugo, Andreu Vinets Alonso, Andrei Alexandru Dafinoiu
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Patent number: 11699055Abstract: In some examples, a system detects an error in an printing device, and selects a combination of a medium advance error correction process to address a medium advance error and a faulty nozzle correction process to address a faulty nozzle, where the selecting of the combination is from a plurality of different combinations of the medium advance error correction process and the faulty nozzle correction process, and the selecting is based on a criterion relating to an interaction between the medium advance error and faulty nozzle correction processes.Type: GrantFiled: August 30, 2021Date of Patent: July 11, 2023Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Marc Gené Alujas, Joan Albert Jorba Closa, Andrei Alexandru Dafinoiu
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Publication number: 20230214160Abstract: In example implementations, a method, a device, and a program are provided. The method includes detecting a power increase movement of a printer carriage. A location of the printer carriage is detected at a time of the detected power increase. Based on the detected location of the printer carriage, determine whether the print medium is damaged. The device includes a power monitor to detect a power increase during movement of a printer carriage. A locator detects a location of the printer carriage at the time of the detected power increase. A damage determiner determines, based on the detected location of the printer carriage, whether the print medium is damaged. The program detects a power increase during movement of a printer carriage. Location of printer carriage is detected at time of detected power increase. Based on detected location of the printer carriage, it is determined whether the print medium is damaged.Type: ApplicationFiled: March 17, 2023Publication date: July 6, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Josep Maria BEL CALAVIA, Antonio GRACIA VERDUGO, Andrei Alexandru DAFINOIU
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Patent number: 11635924Abstract: There is disclosed a device, method and program, wherein the method comprises detecting a power increase, during which power usage increases by at least a threshold amount over an expected power usage during movement of a printer carriage over a print medium along a scan axis. The increase method further comprises detecting a location of the printer carriage at a time of the detected power usage increase and determining, based on the detected location of the printer carriage, whether the print medium is damaged.Type: GrantFiled: April 11, 2019Date of Patent: April 25, 2023Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Josep Maria Bel Calavia, Antonio Gracia Verdugo, Andrei Alexandru Dafinoiu
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Publication number: 20230065266Abstract: In some examples, a system detects an error in an printing device, and selects a combination of a medium advance error correction process to address a medium advance error and a faulty nozzle correction process to address a faulty nozzle, where the selecting of the combination is from a plurality of different combinations of the medium advance error correction process and the faulty nozzle correction process, and the selecting is based on a criterion relating to an interaction between the medium advance error and faulty nozzle correction processes.Type: ApplicationFiled: August 30, 2021Publication date: March 2, 2023Inventors: Marc Gené Alujas, Joan Albert Jorba Closa, Andrei Alexandru Dafinoiu
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Publication number: 20220385769Abstract: In some examples, a system compares information of a color profile for an imaging device to color information relating to a type of substrate on which an image is to be formed. Based on the comparing, the system determines a mismatch between the color profile and the type of substrate. The system initiates a remedial action to address the mismatch.Type: ApplicationFiled: May 27, 2021Publication date: December 1, 2022Inventors: Antonio Gracia Verdugo, Marina Cantero Lazaro, Andrei Alexandru Dafinoiu
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Publication number: 20220379644Abstract: Examples relate to receiving image data of an image to be sublimation printed, wherein the image data comprising one or more colours to be printed, and a corresponding printing liquid density of the one or more colours. Based on the received image data, a sublimation energy to use to transfer printed printing liquid representing the image into a material is determined, and the determined sublimation energy is provided to a sublimator of a printer for transferring the image.Type: ApplicationFiled: January 29, 2020Publication date: December 1, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Antonio GRACIA VERDUGO, Carlota GALINDO QUINTAS, Andrei Alexandru DAFINOIU
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Publication number: 20220324226Abstract: In one example in accordance with the present disclosure, a method, system, and non-transitory machine-readable storage medium are described. A drop characteristic measurement of a drop of print fluid ejected from a printhead is detected. The drop characteristic measurement includes at least one of a drop velocity and a drop weight. The drop characteristic measurement is compared against a threshold value. When the drop characteristic measurement is beyond the threshold value, a remedial action is triggered.Type: ApplicationFiled: April 13, 2021Publication date: October 13, 2022Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Andrei Alexandru Dafinoiu, Andreu Vinets Alonso, Marina Cantero Lazaro
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Publication number: 20220143969Abstract: A method of printing, the method comprising: monitoring operation of first nozzles of a first nozzle array, and if malfunction of a number of first nozzles of the first nozzle array is detected, setting a number of second nozzles of a second nozzle array to a compensation mode. Monitoring operation of the number of second nozzles in the compensation mode and, in response to detecting that a printing parameter of the number of second nozzles differs from a reference printing parameter, adjusting an operation mode parameter of a subset of second nozzles.Type: ApplicationFiled: January 30, 2019Publication date: May 12, 2022Inventors: Carlota GALINDO QUINTAS, Antonio GRACIA VERDUGO, Andrei ALEXANDRU DAFINOIU
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Publication number: 20220126571Abstract: In an example, a printing apparatus includes a controller, wherein the controller may be to compare a historic usage of a first printhead nozzle with a historic usage of a second printhead nozzle which is located on a same printhead as the first nozzle. The controller may be to determine that the historic usage of the first nozzle is higher than the historic usage of the second nozzle, and in response identify a currently operational third printhead nozzle, for which the second nozzle is able to compensate; and turn off the third nozzle, and operate the second nozzle at a higher firing frequency to compensate for the third nozzle.Type: ApplicationFiled: July 15, 2019Publication date: April 28, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Antonio Gracia Verdugo, Andreu Vinets Alonso, Andrei Alexandru Dafinoiu
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Publication number: 20220088922Abstract: Example implementations relate to a method to manage printhead operational life; the method comprising firing at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid, measuring a parameter associated with the drop of print liquid, and adjusting the firing parameter in response to the measuring to reduce the measured parameter associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.Type: ApplicationFiled: June 7, 2019Publication date: March 24, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Antonio Gracia Verdugo, Andreu Vinets Alonso, Andrei Alexandru Dafinoiu
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Publication number: 20220072883Abstract: There is disclosed a device, method and program, wherein the method comprises detecting a power increase, during which power usage increases by at least a threshold amount over an expected power usage during movement of a printer carriage over a print medium along a scan axis. The increase method further comprises detecting a location of the printer carriage at a time of the detected power usage increase and determining, based on the detected location of the printer carriage, whether the print medium is damaged.Type: ApplicationFiled: April 11, 2019Publication date: March 10, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Josep Maria Bel Calavia, Antonio Gracia Verdugo, Andrei Alexandru Dafinoiu
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Publication number: 20220024202Abstract: There is disclosed a printhead control method, printhead controller and printer. The method may comprise determining whether ink drop variability is likely to occur based on a first time period in which a printhead is uncovered during a print action but before printing begins, and a second time period that is a minimum period for ink drop variability to occur when the printhead is uncovered. The method may further comprise setting a printhead firing frequency for the print action based on the determination.Type: ApplicationFiled: January 30, 2019Publication date: January 27, 2022Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Antonio Gracia Verdugo, Carlota Galindo Quintas, Andrei Alexandru Dafinoiu
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Publication number: 20210039408Abstract: In an example a system includes a carriage with a print head receiving station, a color variation engine, and a delay engine. The color variation engine identifies a potential color variation condition corresponding to an area fill region. The delay engine applies a carriage delay strategy according to the identified potential color variation condition and the size of the area fill region.Type: ApplicationFiled: February 26, 2018Publication date: February 11, 2021Inventors: Antonio Gracia Verdugo, Andrei Alexandru Dafinoiu, Li Qian