公开(公告)号：US12103309B2

公开(公告)日：2024-10-01

申请号：US17905725

申请日：2020-03-11

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Maria Elizabeth Zapata ,  Raimon Castells de Monet ,  Francisco Lopez Moral

IPC: B41J2/165

CPC classification number: B41J2/1652

Abstract: It is hereby disclosed a method to print on porous substrate by a printer comprising: a print zone; a conveyor to receive a porous substrate on a loading zone and to move the porous substrate along a transport direction between the print zone and the loading zone; a print engine positioned on the print zone for ejecting printing fluid towards the porous substrate; wherein the method comprises ejecting printing fluid towards a front side the porous substrate and, by a controller, activating a vacuum source as to exert a vacuum on a back side of the porous substrate being the vacuum exerted while the porous substrate is within the print zone.

公开(公告)号：US09751348B2

公开(公告)日：2017-09-05

申请号：US15109794

申请日：2014-01-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Carlos Felip Aragon ,  Xavier Domingo Requant ,  Raimon Castells de Monet

IPC: B41J29/393 ,  B41J29/38 ,  B41J3/407 ,  B41J11/00 ,  B41J2/01

CPC classification number: B41J29/38 ,  B41J2/01 ,  B41J3/407 ,  B41J11/0065

Abstract: A method for detecting a demountable accessory in an image-forming device is disclosed. The image-forming device comprises a controller, a print platen suitable for receiving a substrate, and a handling mechanism. The print platen has an optical sensor associated therewith adapted to capture an image of an item on the print platen. A first image is captured. The handling mechanism carries out an adjustment action suitable for adjusting the position of the substrate on the print platen. A second image is captured. The first and second images are analyzed to identify any changes and of the captured images is analyzed to detect an accessory identifier. The presence of an item on the platen is determined from the analysis.

公开(公告)号：US10792942B2

公开(公告)日：2020-10-06

申请号：US16340640

申请日：2017-01-19

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Raimon Castells de Monet ,  David Faundez Barroso ,  David Munoz Navarro ,  Marco Ignacio Barbetta

IPC: B41J25/308 ,  G01B5/06 ,  B41J11/00

Abstract: Measuring the thickness of a print media supported by a platen or belt by: moving a measurement bar to a first position to contact a surface of the platen or belt, moving the measurement bar to a second position to contact a surface of the print media when supported by the platen or belt, and determining the spatial difference between the first and second positions such as to measure the thickness of the print media. The measurement bar is arranged to cover a width of the print media when supported by the platen or belt.

公开(公告)号：US09902178B2

公开(公告)日：2018-02-27

申请号：US15324651

申请日：2014-07-16

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Raimon Castells de Monet ,  Alex Andrea Tallada ,  David Claramunt Morera

IPC: B41J25/00 ,  B41J23/00

CPC classification number: B41J25/001 ,  B41J2/2114 ,  B41J2/2117 ,  B41J19/142 ,  B41J23/00

Abstract: A method in a printer comprising a first printhead to dispense a first printing fluid and a second printhead to dispense a second printing fluid, the first and second printheads being arranged on a common scan axis that is substantially perpendicular to a media advance direction. The method comprises controlling movement of the first and second printheads relative to a media being printed, between a first index position and a second index position, the second index position being downstream of the first index position, and wherein the movement occurs during a time period between a forward scan and a reverse scan of the first and second printheads across a media being printed.

公开(公告)号：US09776438B2

公开(公告)日：2017-10-03

申请号：US15030409

申请日：2013-11-21

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Carles Ruiz Floriach ,  Carlos Felip Aragon ,  Raimon Castells de Monet ,  Xavier Domingo Reguant

IPC: B41J15/16 ,  B41F33/06 ,  H02P27/12 ,  B65H23/18

CPC classification number: B41J15/16 ,  B41F33/06 ,  B65H23/18 ,  B65H2515/32 ,  B65H2555/24 ,  B65H2557/61 ,  B65H2557/63 ,  B65H2801/03 ,  B65H2801/15 ,  H02P27/12 ,  B65H2220/02 ,  B65H2220/01

Abstract: A printer is disclosed. The printer has a media control system to control the tension in media loaded in a paper path in the printer. A motor in the media control system is characterized to determine a plurality of motor characteristics. The media control system uses the motor characteristics to adjust the control signal to the motor.