公开(公告)号：US20180272695A1

公开(公告)日：2018-09-27

申请号：US15989458

申请日：2018-05-25

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

Inventor： Xavier Quintero Ruiz ,  Roma Segura Fabregas ,  Marcos Casaldaliga

IPC: B41J2/045 ,  B41J2/21 ,  B41J2/155 ,  B41J29/393

CPC classification number: B41J2/04505 ,  B41J2/04558 ,  B41J2/15 ,  B41J2/155 ,  B41J2/2135 ,  B41J2/2146 ,  B41J29/393 ,  B41J2029/3935 ,  B41J2202/20

Abstract: In some examples, a printer includes neighboring nozzle arrays extending across a print zone, each nozzle array of the neighboring nozzle arrays extending along an axis and comprising a first section of nozzles and a second section of nozzles, wherein the second sections of the neighboring nozzle arrays overlap defining an overlap region and the first sections of the neighboring nozzle arrays define non-overlap regions. A controller is to cause printing of a test pattern using the neighboring nozzle arrays, the test pattern comprising a first pattern printed by the second sections of the neighboring nozzle arrays in the overlap region, and a reference pattern printed by a first section of the first sections of the neighboring nozzle arrays in a non-overlap region of the non-overlap regions, receive detected characteristics of the printed test pattern, compare the characteristics of the printed test pattern in the overlap region and in the non-overlap region, and derive alignment information based on the comparing.

公开(公告)号：US10532559B2

公开(公告)日：2020-01-14

申请号：US15989458

申请日：2018-05-25

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

Inventor： Xavier Quintero Ruiz ,  Roma Segura Fabregas ,  Marcos Casaldaliga

IPC: B41J2/045 ,  B41J2/155 ,  B41J2/21 ,  B41J29/393

Abstract: In some examples, a printer includes neighboring nozzle arrays extending across a print zone, each nozzle array of the neighboring nozzle arrays extending along an axis and comprising a first section of nozzles and a second section of nozzles, wherein the second sections of the neighboring nozzle arrays overlap defining an overlap region and the first sections of the neighboring nozzle arrays define non-overlap regions. A controller is to cause printing of a test pattern using the neighboring nozzle arrays, the test pattern comprising a first pattern printed by the second sections of the neighboring nozzle arrays in the overlap region, and a reference pattern printed by a first section of the first sections of the neighboring nozzle arrays in a non-overlap region of the non-overlap regions, receive detected characteristics of the printed test pattern, compare the characteristics of the printed test pattern in the overlap region and in the non-overlap region, and derive alignment information based on the comparing.

公开(公告)号：US10011108B2

公开(公告)日：2018-07-03

申请号：US15544374

申请日：2015-02-13

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

Inventor： Xavier Quintero Ruiz ,  Roma Segura Fabregas ,  Marcos Casaldaliga

IPC: B41J2/045 ,  B41J2/21 ,  B41J2/155 ,  B41J29/393

CPC classification number: B41J2/04505 ,  B41J2/04558 ,  B41J2/15 ,  B41J2/155 ,  B41J2/2135 ,  B41J2/2146 ,  B41J29/393 ,  B41J2029/3935 ,  B41J2202/20

Abstract: A method of controlling a printer is disclosed, the printer including a number of print heads extending across a print zone, and each print head including at least one nozzle array extending in a direction of a print head axis. Each nozzle array comprises a center section of nozzles and side sections of nozzles, wherein the side sections of neighboring nozzle arrays overlap defining an overlap region and the center sections of the nozzle arrays define non-overlap regions. The method includes: printing a test pattern using at least two nozzle arrays, the test pattern comprising an interferential-type pattern printed by the side sections of the nozzle arrays in the overlap region and a reference pattern printed by the center sections of the nozzle arrays in the non-overlap regions; detecting characteristics of the printed test pattern; comparing the characteristics of the printed test pattern in the overlap region and in the non-overlap region; and deriving information concerning the alignment of nozzle arrays from the comparison

公开(公告)号：US20170361635A1

公开(公告)日：2017-12-21

申请号：US15544374

申请日：2015-02-13

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

Inventor： Xavier Quintero Ruiz ,  Roma Segura Fabregas ,  Marcos Casaldaliga

IPC: B41J29/393 ,  B41J2/045 ,  B41J2/21 ,  B41J2/155

CPC classification number: B41J2/04505 ,  B41J2/04558 ,  B41J2/15 ,  B41J2/155 ,  B41J2/2135 ,  B41J2/2146 ,  B41J29/393 ,  B41J2029/3935 ,  B41J2202/20

Abstract: A method of controlling a printer is disclosed, the printer including a number of print heads extending across a print zone, and each print head including at least one nozzle array extending in a direction of a print head axis. Each nozzle array comprises a center section of nozzles and side sections of nozzles, wherein the side sections of neighboring nozzle arrays overlap defining an overlap region and the center sections of the nozzle arrays define non-overlap regions. The method includes: printing a test pattern using at least two nozzle arrays, the test pattern comprising an interferential-type pattern printed by the side sections of the nozzle arrays in the overlap region and a reference pattern printed by the center sections of the nozzle arrays in the non-overlap regions; detecting characteristics of the printed test pattern; comparing the characteristics of the printed test pattern in the overlap region and in the non-overlap region; and deriving information concerning the alignment of nozzle arrays from the comparison