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公开(公告)号：US10479110B2
公开(公告)日：2019-11-19
申请号：US15763509
申请日：2016-01-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Steve O Rasmussen , Mark H MacKenzie , Bradley B Branham , Jeffrey G Bingham
Abstract: In one example, a system for partially dried inkjet media fusers include a plurality of fusers aligned to receive partially dried inkjet media from a printing device, wherein the plurality of fusers each comprise a top roller and a bottom roller to apply pressure to the received partially dried inkjet media, and a finisher to receive the partially dried inkjet media from the plurality of fusers.
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公开(公告)号：US20190176491A1
公开(公告)日：2019-06-13
申请号：US16326057
申请日：2016-09-02
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Steve O Rasmussen , Kevin Lo , Richard Lee Brinkly , Mark H MacKenzie
IPC: B41J11/00
Abstract: In one example, a partially dried inkjet media conditioner can include: a print engine that encases a print zone within a housing, and a media path to provide partially dried inkjet media from the print zone to a conditioner within the print engine, wherein the conditioner comprises a heated pressure roller.
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公开(公告)号：US20180297382A1
公开(公告)日：2018-10-18
申请号：US15767294
申请日：2016-02-16
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Mark H MacKenzie , Matthew A Shepherd , Vanessa Verzwyvelt , Bruce A Axten , Weiyun Sun
IPC: B41J25/308 , B41J2/155 , B41J13/00
Abstract: A method for inkjet nozzle spitting including conveying pages in a print direction along a transport through a printzone of a wide array printhead formed by a plurality of rows of nozzles disposed crosswise to the print direction, the nozzles to eject ink drops in accordance with print data. The method further includes maintaining a gap between pages as the gap moves through the printzone, and providing spit pattern data as print data to the printhead to successively activate each row of nozzles, in the print direction and in synchronism with movement of the gap, to eject ink drops from all nozzles of the row so that a position of the activated row of nozzles is maintained within the gap as the gap continuously moves through the printzone.
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公开(公告)号：US11040329B2
公开(公告)日：2021-06-22
申请号：US16722889
申请日：2019-12-20
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Dawn M Beachnau Hood , Matthew A Shepherd , Mark H MacKenzie , Weiyun Sun , Milan Justel , Robert Yraceburu , Steve O Rasmussen
IPC: B01J20/24 , C02F1/28 , B01J20/30 , B01J20/16 , C02F101/20 , C02F101/10
Abstract: In an example, a print system include a component device that is operation in a number of state, a density engine, and a component engine. An example density engine identifies a plane region of a plane where print fluid is to be printed based on data of a print job and determines a density classifier for the plane based on a location of the plane region on the plane. An example component engine causes an adjustment of a component attribute of the component device based on the density classifier.
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Patent Agency Ranking
公开(公告)号：US20180288256A1
公开(公告)日：2018-10-04
申请号：US15763502
申请日：2016-01-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Saurabh Shripad Bhide , Brent Ewald , Wesley R Schalk , Mark H MacKenzie
IPC: H04N1/00
Abstract: The direction and distance for traversal by a media loaded into the printer is determined. A skew to be induced in a position of the media relative to a media feed direction axis is also determined. A scheme of motion for the rollers is selected and respective speeds for the first roller and the second roller are calculated. The first roller and the second roller are caused to be rotated at the respective speeds such that the skew is induced in the position of the media relative to the media feed direction.
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公开(公告)号：US09994014B2
公开(公告)日：2018-06-12
申请号：US15306016
申请日：2014-04-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Michael W Cumbie , Garrett E Clark , Mark H MacKenzie
IPC: B41J2/045
CPC classification number: B41J2/04545 , B41J2/0458 , B41J2/04581
Abstract: Selecting nozzles can include selecting nozzles of a plurality of nozzles to print a portion of a print job based on content of the print job and assigning firing reservations to the selected nozzles, where a total number of the firing reservations assigned to the selected nozzles is comparatively less than a total number of the plurality of nozzles.
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公开(公告)号：US09878870B2
公开(公告)日：2018-01-30
申请号：US15521867
申请日：2015-01-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Wesley R Dchalk , Mark H MacKenzie , Bruce A Axten , Francisco Javier Gomez Maurer , Catherine Elizabeth Gould
CPC classification number: B65H43/00 , B65H29/125 , B65H29/14 , B65H2301/44522 , B65H2513/10 , B65H2513/108 , B65H2557/242 , B65H2701/1313 , B65H2801/06 , B65H2220/01 , B65H2220/03 , B65H2220/02
Abstract: According to an example, to eject print media from an image forming apparatus, a variable page feed velocity of a first page of print media exiting a feed zone is detected. An acceleration value and a deceleration value based on the variable page feed velocity of the first page is calculated. The calculated acceleration is applied to a media movement component in the output zone when the entire first page has cleared a media sensor in the front of the output zone, and the deceleration is applied when the tail end of the first page is in a brake zone. In some examples, a second page of print media and a variable page feed velocity of the second page exiting the feed zone is detected, and the media movement component in the output zone is accelerated to match the variable page feed velocity of the second page.
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公开(公告)号：US20170334673A1
公开(公告)日：2017-11-23
申请号：US15521867
申请日：2015-01-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Wesley R Dchalk , Mark H MacKenzie , Bruce A Axten , Francisco Javier Gomez Maurer , Catherine Elizabeth Gould
CPC classification number: B65H43/00 , B65H29/125 , B65H29/14 , B65H2301/44522 , B65H2513/10 , B65H2513/108 , B65H2557/242 , B65H2701/1313 , B65H2801/06 , B65H2220/01 , B65H2220/03 , B65H2220/02
Abstract: According to an example, to eject print media from an image forming apparatus, a variable page feed velocity of a first page of print media exiting a feed zone is detected. An acceleration value and a deceleration value based on the variable page feed velocity of the first page is calculated. The calculated acceleration is applied to a media movement component in the output zone when the entire first page has cleared a media sensor in the front of the output zone, and the deceleration is applied when the tail end of the first page is in a brake zone. In some examples, a second page of print media and a variable page feed velocity of the second page exiting the feed zone is detected, and the media movement component in the output zone is accelerated to match the variable page feed velocity of the second page.
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公开(公告)号：US09782978B2
公开(公告)日：2017-10-10
申请号：US15313161
申请日：2014-05-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Bradley D Chung , Hsue-Yang Liu , Matthew A Shepherd , Mark H MacKenzie , Jason M Quintana
CPC classification number: B41J2/2121 , B41J2/01 , B41J2/145 , B41J2/155 , B41J2/2146 , B41J2/5056 , B41J19/16 , B41J2202/20 , H04N1/2307 , H04N1/233
Abstract: A printer includes a printbar having plural dice partially overlap in the direction of rows and a halftoner. The dice receive nozzle firing data which determines when and where the individual print nozzles are to be operated in order to emit the colorant onto the media so as to form the desired printed image on a media. The halftoner is a bidirectional error diffusion halftoner that is structured to generate halftoned data. The halftoned data is mappable into the firing data. The halftoner includes a serpentine direction reverser which is structured to halftone print data image pixels in a first serpentine direction to form halftoned data and then to halftone print data image pixels in an opposite serpentine direction to form the halftoned data.
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