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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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公开(公告)号：US20190389203A1
公开(公告)日：2019-12-26
申请号：US16481506
申请日：2017-05-03
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Marta Blanch Pinol , Diana Canto Estany , Eduardo Amela Conesa
Abstract: In an example, a print system identifies a number of drops to eject corresponding to an expected variation in print fluid based on media temperature and generate print instructions to operate a fluid eject device to that effect. In another example, a print system includes a temperature engine to identify a temperature, a compensator engine to identify a number of drops of print fluid based on the media temperature, and a control engine to generate print instructions to operate a fluid ejection device to place the number of drops of print fluid on media.
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公开(公告)号：US09415583B2
公开(公告)日：2016-08-16
申请号：US14853671
申请日：2015-09-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eduardo Amela Conesa , Jaime Fernandez , Jacint Humet , Marc Serra
CPC classification number: B41J2/2103 , B41J2/04 , B41J2/04501 , B41J2/04586 , B41J2/2114 , B41J11/0015 , B41M5/0017
Abstract: A printing method and system include a printhead configured to eject a fixer fluid. A controller is operatively connected to the printhead and configured to control the printhead so as to apply the fixer fluid to a print area in a pattern to form cells having a predetermined area without the fixer fluid.
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公开(公告)号：US20160001548A1
公开(公告)日：2016-01-07
申请号：US14853671
申请日：2015-09-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eduardo Amela Conesa , Jaime Fernandez , Jacint Humet , Marc Serra
IPC: B41J2/045
CPC classification number: B41J2/2103 , B41J2/04 , B41J2/04501 , B41J2/04586 , B41J2/2114 , B41J11/0015 , B41M5/0017
Abstract: A printing method and system include a printhead configured to eject a fixer fluid. A controller is operatively connected to the printhead and configured to control the printhead so as to apply the fixer fluid to a print area in a pattern to form cells having a predetermined area without the fixer fluid.
Abstract translation: 打印方法和系统包括被配置为喷射定影剂流体的打印头。 控制器可操作地连接到打印头并且被配置为控制打印头，以将定影液以图案形式施加到打印区域，以形成具有预定区域而没有固定器流体的单元。
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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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Patent Agency Ranking
公开(公告)号：US10940697B2
公开(公告)日：2021-03-09
申请号：US16977736
申请日：2018-04-23
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Mihail Zverev , Eduardo Amela Conesa
IPC: B41J3/60 , B41J29/393 , B41J2/21 , B41J3/407
Abstract: A method of generating an image on a transparent or semitransparent substrate, the method comprising analyzing a first image to be printed on a first side of the substrate to identify a region associated with a predominant color, printing, on the first side of the substrate a color patch with the identified predominant color, printing, on a second side of the substrate, a test color pattern overlapping with the color patch on the first side of the substrate, determining, in a transmission geometry, a color distribution in the color patch, and generating from the determined color distribution, for the region associated with the predominant color identified in the first image, a transmission mode color profile for printing on the second side of the substrate.
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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：US09004642B2
公开(公告)日：2015-04-14
申请号：US13752173
申请日：2013-01-28
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jaime Fernandez Del Rio , Jacint Humet Pous , Eduardo Amela Conesa , Marc Serra Vall
CPC classification number: B41J2/07 , B41J2/2114
Abstract: An apparatus and method for controlling a printing device are described. In examples, a printing device has a first printhead interface, a first printhead for use in applying a treatment fluid to a print medium and a second printhead interface, a second printhead for use in applying ink to the print medium. The first and second printhead interfaces are consecutively aligned along a common axis and each printhead has a plurality of nozzles that extend in a direction of relative movement of the print medium in relation to said printheads. An example apparatus then has a controller arranged to, when the printheads are installed, configure activation of nozzles of at least one of the first and second printheads in the direction of relative movement to spatially offset useable nozzles of the first printhead with respect to useable nozzles of the second printhead in said direction.
Abstract translation: 描述了一种用于控制打印设备的设备和方法。 在示例中，打印装置具有第一打印头接口，用于将打印介质施加处理流体的第一打印头和第二打印头接口，用于向打印介质施加墨水的第二打印头。 第一和第二打印头接口沿着共同的轴线连续对齐，并且每个打印头具有多个喷嘴，其沿打印介质相对于所述打印头的相对运动的方向延伸。 一个示例性装置然后具有控制器，其布置成当打印头被安装时，在相对运动的方向上配置第一和第二打印头中的至少一个的喷嘴的激活，以便相对于可用的喷嘴空间上抵消第一打印头的可用喷嘴 的第二打印头。
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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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公开(公告)号：US11220108B2
公开(公告)日：2022-01-11
申请号：US17050469
申请日：2018-06-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Eduardo Amela Conesa , Marian Dinares Argemi
IPC: B41J2/165
Abstract: An example of a printing apparatus comprising a scanning printhead and a controller is disclosed. The scanning printhead comprises a plurality of nozzles to print using a mask comprising a ramp area and non-ramp area. A first subset of nozzles of the plurality of nozzles is assigned to the ramp area and the second subset of nozzles of the plurality of nozzles is assigned to the non-ramp area. The controller is to calculate a number of spits of a nozzle from the second subset of nozzles for a pass. The controller is also to calculate a number of spits of a nozzle from the first subset of nozzles for the pass based on the number of spits of the nozzle from the second subset of nozzles. The controller is further to instruct the nozzle from the first subset of nozzles to eject online an amount of a composition on a service zone based on the number of spits of the first subset of nozzles.
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