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公开(公告)号：US20210323308A1
公开(公告)日：2021-10-21
申请号：US16499894
申请日：2018-04-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B41J2/165
Abstract: Example apparatus is disclosed, including apparatus for print head maintenance, the apparatus comprising a print mead maintenance device to perform a print head maintenance operation on a print head during a printing process, and a controller to cause the print head maintenance device to perform the print head maintenance operation with a parameter based on an amount of print agent applied by the print head.
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公开(公告)号：US20200324550A1
公开(公告)日：2020-10-15
申请号：US16305110
申请日：2016-07-28
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Antonio Gracia Verdugo , Diana Pilar Pascual Soldevilla , Sara Echevarria Benito , David Toussaint , Mauricio Seras Franzoso
Abstract: In an example, a method includes ejecting a print agent drop from a printhead, and determining an indication of velocity of the print agent drop. A weight parameter of the print agent drop may be determined from the indication of velocity.
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公开(公告)号：US10207499B2
公开(公告)日：2019-02-19
申请号：US15544400
申请日：2015-02-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mauricio Seras Franzoso , Antonio Gracia Verdugo , Marta Coma Vives
Abstract: Examples associated with drop velocity aberrancy detection are disclosed. One example includes firing ink through nozzles of a print-head past sensors to identify drop velocities of the nozzles. A target drop velocity is selected based on the drop velocities of the nozzles. An aberrant nozzles is detected when a nozzle has a drop velocity that deviates from the target drop velocity by a selected threshold. The aberrant nozzle is deactivated, and a good nozzle that will travel over locations traversed by the aberrant nozzle is configured to print portions of a job that would have been printed by the aberrant nozzle.
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公开(公告)号：US20160257150A1
公开(公告)日：2016-09-08
申请号：US15029047
申请日：2013-10-14
Applicant: Antonio GRACIA VERDUGO , Valentín FERNÁNDEZ GIMÉNEZ , Maurizio SERAS FRANZOSO , HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B41J29/393
CPC classification number: B41J2/04556 , B41J3/28 , B41J3/4073 , B41J11/0035 , B41J11/0095 , B41J29/393
Abstract: Examples of the method may comprise providing a print media under a printhead of the printing system, obtaining an actual height profile signal, related to a height between the printhead and the print media, based on measurements taken at a plurality of positions across the width of the media during at least one pass, comparing said actual height profile signal to an earlier height profile signal, obtained based on measurements taken at said plurality of positions across the width of the media during at least one earlier pass on the same print media, and determining a media malfunction condition based on said comparison.
Abstract translation: 该方法的示例可以包括在打印系统的打印头下方提供打印介质，基于在跨越打印头的宽度的多个位置处进行的测量获得与打印头和打印介质之间的高度相关的实际高度分布信号 所述介质在至少一次通过期间将所述实际高度分布信号与先前的高度分布信号进行比较，所述早期高度分布信号是基于在相同的打印介质上的至少一次以前的传播期间穿过所述介质的宽度在所述多个位置处进行的测量获得的， 基于所述比较确定介质故障状况。
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公开(公告)号：US11571887B2
公开(公告)日：2023-02-07
申请号：US17049090
申请日：2018-08-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: A system comprises a printhead including a nozzle, a temperature sensor and a processor. The temperature sensor detects the temperature of a location of a print surface upon firing the nozzle to eject a drop of printing fluid to the location of the print surface. The processor determines whether the nozzle ejected the drop properly using the detected temperature.
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Patent Agency Ranking
公开(公告)号：US10688817B2
公开(公告)日：2020-06-23
申请号：US15569950
申请日：2015-07-09
Applicant: Hewlett-Packard Development Company, L.P.
IPC: B41J19/14 , B41J2/21 , B41J29/393 , B41J2/01
Abstract: Examples associated with printer configuration are disclosed. One example includes printing, using a printer, a first portion of a test patch in a first print direction. A second portion of the test patch is printed in a second print direction. The second portion is printed at a first offset from the first portion. A first portion of a second test patch is printed in the first print direction, and a second portion of the second test patch is printed in the second print direction at a second offset from the first portion of the second test patch. The printer is configured to print in the second print direction using one of the first offset and the second offset based on a selection between the first test patch and the second test patch.
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公开(公告)号：US20180001626A1
公开(公告)日：2018-01-04
申请号：US15544400
申请日：2015-02-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Mauricio Seras Franzoso , Antonio Gracia Verdugo , Marta Coma Vives
CPC classification number: B41J2/04561 , B41J2/0451 , B41J2/0458 , B41J2/04581 , B41J2/11 , B41J2/125 , B41J2/135 , B41J2/165 , B41J2/16579 , B41J2/2139 , B41J2/2142
Abstract: Examples associated with drop velocity aberrancy detection are disclosed. One example includes firing ink through nozzles of a print-head past sensors to identify drop velocities of the nozzles. A target drop velocity is selected based on the drop velocities of the nozzles. An aberrant nozzles is detected when a nozzle has a drop velocity that deviates from the target drop velocity by a selected threshold. The aberrant nozzle is deactivated, and a good nozzle that will travel over locations traversed by the aberrant nozzle is configured to print portions of a job that would have been printed by the aberrant nozzle.
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公开(公告)号：US20170266963A1
公开(公告)日：2017-09-21
申请号：US15615219
申请日：2017-06-06
Applicant: Hewlett-Packard Development Company, L.P.
CPC classification number: B41J2/04551 , B41J2/04553 , B41J2/0458 , B41J2/04581 , B41J2/04586 , B41J2/165 , B41J2/16508 , B41J2/16517 , B41J2/1652 , B41J2/16526 , B41J2/16579 , B41J2002/16561 , B41J2002/16573
Abstract: In some examples, a method includes, in response to a fluid firing unit being operated according to a normal printing mode, applying a first voltage to the fluid firing unit to fire the fluid firing unit during a printing operation. The method further includes determining, using a sensor, whether a predetermined condition is met, and in response to determining that the predetermined condition is met, operating the fluid firing unit according to a recovery mode in which a second voltage higher than the first voltage is applied to the fluid firing unit to clean the fluid firing unit.
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公开(公告)号：US09114949B2
公开(公告)日：2015-08-25
申请号：US13920573
申请日：2013-06-18
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Antonio Gracia Verdugo , Marta Coma Vives , Mauricio Seras Franzoso
CPC classification number: B65H23/046 , B41J11/0075 , B41J29/48 , B65H26/08 , B65H2403/52 , B65H2511/142 , B65H2553/412 , B65H2555/26 , B65H2801/36 , G01B11/08 , G01B11/12 , B65H2220/03
Abstract: A method to monitor a media roll mounted in a printing apparatus comprises scanning with a sensor an end side of a media roll by displacing the sensor in the radial direction of the roll, detecting the position of a media roll outer edge during said scanning, and determining a dimension of the media roll on the basis of the detected outer edge position.
Abstract translation: 监测安装在打印设备中的介质卷筒的方法包括用传感器扫描介质辊的端侧，通过沿着辊的径向位移传感器，在扫描过程中检测介质辊外边缘的位置，以及 基于检测到的外边缘位置确定介质辊的尺寸。
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10.发明申请DETERMINATION OF A MEDIA MALFUNCTION EVENT BASED ON A SHAPE OF A MEDIA PORTION 有权基于媒体部分形状的媒体故障事件的确定公开(公告)号：US20140307021A1
公开(公告)日：2014-10-16
申请号：US13860757
申请日：2013-04-11
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B41J29/46
CPC classification number: B41J11/001 , B41J11/0085 , B41J11/0095 , B41J11/06
Abstract: A printing apparatus includes a media support assembly, a scanning module, and a control module. The media support assembly may position a respective media portion in a print zone to receive a printing fluid thereon. The scanning module may scan the media portion in the print zone and generate a media shape signal corresponding to a shape of the media portion. The control module may compare the media shape signal to a reference signal to form a resultant comparison and determine a media malfunction event based on the resultant comparison.
Abstract translation: 打印装置包括介质支撑组件，扫描模块和控制模块。 介质支撑组件可将相应的介质部分定位在打印区域中以在其上接收打印流体。 扫描模块可以扫描打印区域中的介质部分，并产生对应于介质部分的形状的介质形状信号。 控制模块可以将介质形状信号与参考信号进行比较以形成合成的比较，并且基于所得到的比较来确定介质故障事件。
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