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1. 发明申请

US20180029355A1 CONTROLLING ADVANCE OF PRINT MEDIA TO DELIVER PRINTING FLUID FROM PLURAL COLUMNS OF NOZZLES 审中-公开
公开(公告)号：US20180029355A1
公开(公告)日：2018-02-01
申请号：US15491789
申请日：2017-04-19
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Andreas Muller , Utpal Kumar Sarkar
IPC分类号： B41J2/045
CPC分类号： B41J2/04508 , B41J2/04586 , B41J2/2132 , G06K15/107
摘要： In some examples, a printing system includes a printhead comprising a nozzle array including plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns. A controller is to control printing onto the print medium using the printhead by, for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium for a print mask pattern that controls firing of the nozzles of the printhead, where the controlled advance of the print medium causes nozzles from different columns of nozzles of the nozzle array to deliver dots of printing fluid to a given row of a swath in successive passes of the plurality of passes.

2. 发明申请

US20150273908A1 PRINT MASKS FOR MULTIPLE PASS PRINT MODES 有权
标题翻译：打印多个打印模式的面罩
公开(公告)号：US20150273908A1
公开(公告)日：2015-10-01
申请号：US14423813
申请日：2012-09-06
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Jamie Fernandez , Ynqvar Rossow , Utpal Kumar Sarkar
IPC分类号： B41J29/38
CPC分类号： B41J29/38 , G06K15/105 , G06K15/107
摘要： Print masks for multiple pass print modes are described herein. In at least some examples herein, the print mask includes mask matrices. The mask matrices define a single nozzle actuation pattern. The nozzle actuation pattern is irregular. In at least some examples herein, techniques for printing of an image on a substrate are described. During printing the image on the substrate a print mask is applied such that, for each pass, the inkjet nozzles in the print head are actuated according to the single nozzle actuation pattern.
摘要翻译：这里描述了用于多遍打印模式的打印蒙版。在本文的至少一些示例中，打印掩模包括掩模矩阵。掩模矩阵定义单个喷嘴致动模式。喷嘴致动图案是不规则的。在本文的至少一些示例中，描述了用于在基板上打印图像的技术。在印刷基板上的图像时，施加印刷掩模，使得对于每次通过，打印头中的喷墨喷嘴根据单个喷嘴致动模式被致动。

3. 发明授权

US08870320B2 Method and apparatus for processing image data 有权
标题翻译：用于处理图像数据的方法和装置
公开(公告)号：US08870320B2
公开(公告)日：2014-10-28
申请号：US13752527
申请日：2013-01-29
申请人： Hewlett-Packard Development Company, L.P.
发明人： Andreas Müller , Utpal Kumar Sarkar
IPC分类号： B41J29/38 , H04N1/46 , B41J2/13
CPC分类号： B41J2/13 , B41J2/2132 , G06K15/107
摘要： A method and apparatus for processing image data is described. An example of a method involves applying a first mask to image data corresponding to an overlap zone of a first print region, the first mask representing a first mask pattern and applying a second mask to image data corresponding to the overlap zone of a second print region, the second mask representing a second mask pattern. Each of the first and second mask patterns define a periodic variation in a dimension corresponding to the first direction. First and second mask patterns for at least a second image plane are spatially separated in the dimension corresponding to the first direction in relation to first and second patterns of a first image plane.
摘要翻译：描述用于处理图像数据的方法和装置。一种方法的示例涉及将第一掩模应用于对应于第一印刷区域的重叠区域的图像数据，第一掩模表示第一掩模图案，并且将对应于第二印刷区域的重叠区域的图像数据应用第二掩模，所述第二掩模表示第二掩模图案。第一和第二掩模图案中的每一个限定对应于第一方向的尺寸的周期性变化。用于至少第二图像平面的第一和第二掩模图案相对于第一图像平面的第一和第二图案在与第一方向对应的尺寸中空间上分离。

4. 发明申请

US20220379612A1 CALIBRATION TO COMPENSATE FOR PRINT BAR SKEW ANGLE 有权
公开(公告)号：US20220379612A1
公开(公告)日：2022-12-01
申请号：US17325737
申请日：2021-05-20
申请人： Hewlett-Packard Development Company, L.P.
发明人： Utpal Kumar Sarkar , Carles Carmona Calpe , David Vendrell Tornero
IPC分类号： B41J2/155 , B41J19/16 , G06K15/02
摘要： A pagewide array (PWA) print bar of a printing device prints a calibration pattern on a print medium. The print bar is nominally perpendicular to a media advancement direction in which the print medium advances relative to the PWA print bar during printing. An image of the printed calibration pattern is optically scanned, and a skew angle by which the PWA print bar deviates from true perpendicular to the media advancement direction is calculated based on the optically scanned image. The printing device is calibrated to compensate for the calculated skew angle during subsequent printing.

5. 发明授权

US10787008B2 Cutting print substrates 有权
公开(公告)号：US10787008B2
公开(公告)日：2020-09-29
申请号：US16494967
申请日：2017-06-20
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Leticia Rubio , Xavier Quintero Ruiz , Utpal Kumar Sarkar
IPC分类号： B41J11/66
摘要： Print apparatus is controlled to execute a print operation comprising a plurality of print sweeps onto a print zone of a print substrate and a corresponding plurality of print advances of the print substrate between successive print sweeps. Print apparatus is controlled to execute an intermediate cutting operation between a pre-cut print sweep and a successive post-cut print sweep of the plurality of print sweeps.

6. 发明授权

US10472190B2 Media handling system 有权
公开(公告)号：US10472190B2
公开(公告)日：2019-11-12
申请号：US15109061
申请日：2014-01-31
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Martin Urrutia Nebreda , Utpal Kumar Sarkar
IPC分类号： B65H3/20 , B65H3/46 , B65H5/02 , B41J11/00
摘要： An example media handling system provides a print media (111) along a media path (131) and at least part of the media handling system includes an adhesive material for locating the print media (111) on the at least part of the media path (131).

7. 发明授权

US10105947B2 Controlling advance of print media to deliver printing fluid from plural columns of nozzles 有权
公开(公告)号：US10105947B2
公开(公告)日：2018-10-23
申请号：US15491789
申请日：2017-04-19
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Andreas Muller , Utpal Kumar Sarkar
IPC分类号： B41J2/045 , G06K15/10
摘要： In some examples, a printing system includes a printhead comprising a nozzle array including plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns. A controller is to control printing onto the print medium using the printhead by, for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium for a print mask pattern that controls firing of the nozzles of the printhead, where the controlled advance of the print medium causes nozzles from different columns of nozzles of the nozzle array to deliver dots of printing fluid to a given row of a swath in successive passes of the plurality of passes.

8. 发明授权

US09895915B2 Compensating swath height error 有权
公开(公告)号：US09895915B2
公开(公告)日：2018-02-20
申请号：US15673721
申请日：2017-08-10
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： M. Isabel Borrell Bayona , Xavier Farina Vargas , Leticia Rubio , Utpal Kumar Sarkar
IPC分类号： B41J2/21 , G06K15/10 , B41J25/308 , B41J2/155 , B41J2/045 , B41J29/393
CPC分类号： B41J25/308 , B41J2/04505 , B41J2/04508 , B41J2/155 , B41J2/2132 , B41J2/2139 , B41J2/2146 , B41J29/393 , B41J2202/21 , G06K15/102 , G06K15/105 , G06K15/107
摘要： Example implementations relate to swath height error compensation. Some examples may determine a density of an image to be printed in an overlap area of a printing material. The overlap area may include target pixels capable of being printed by a first set of drop ejection elements and a second set of drop ejection elements that are redundant to the first set of drop ejection elements. Some implementations may also determine a mask to apply to the first and second set of drop ejection elements based on the determined density, and the mask may designate at least one additional drop to apply to at least one target pixel in the overlap area by at least one of the first and second set of drop ejection elements. Some implementations may also apply the mask to the first set of drop ejection elements and the second set of drop ejection elements.

9. 发明授权

US09656466B1 Introducing grain patterns into images 有权
公开(公告)号：US09656466B1
公开(公告)日：2017-05-23
申请号：US15223157
申请日：2016-07-29
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Andreas Muller , Utpal Kumar Sarkar
IPC分类号： B41J2/21 , G06K15/10 , B41J2/045
CPC分类号： B41J2/04508 , B41J2/04586 , B41J2/2132 , G06K15/107
摘要： In some examples, a printing system includes a printhead comprising a nozzle array including plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns. A controller is to cause introduction of a grain pattern into an image printed using the printhead onto the print medium by, for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium by an uneven advance step for a print mask pattern that controls firing of the nozzles of the printhead, where the advance of the print medium by the uneven advance step causes an irregular pattern of firing of the nozzles of the printhead in successive passes of the plurality of passes.

10. 发明申请

US20220379624A1 PRINT MATERIAL USAGE ESTIMATION 有权
公开(公告)号：US20220379624A1
公开(公告)日：2022-12-01
申请号：US17770758
申请日：2020-01-29
申请人： Hewlett-Packard Development Company, L.P.
发明人： Ana Cristina Garcia Alvarez , Utpal Kumar Sarkar , Esteban Gallardo Guillen
IPC分类号： B41J2/175
摘要： A print material usage estimation device may comprise a first usage meter to measure a first print material usage associated with print material deposition on a print medium over a specified time period. 5 The print material usage estimation device may further comprise a second usage meter to measure a second print material usage associated with other printer processes over the specified time period. The print material usage estimation device may further comprise a ratio calculator to calculate a ratio between second print material usage and first print material usage over the specified time period. The print 10 material usage estimation device may further comprise an estimator to estimate total print material usage for an instructed print job based on a predetermined first print material usage for the print job and the calculated ratio.

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