公开(公告)号：US10525703B2

公开(公告)日：2020-01-07

申请号：US15748141

申请日：2015-10-23

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

Inventor： Antonio Gracia Verdugo ,  Mauricio Seras Franzoso ,  Joan Jorba Closa

IPC: B41J2/045 ,  B41J2/12

Abstract: Herein is described a method involving a drop detector. The method may comprise: ejecting ink drops from the nozzles on a printhead toward a drop detector. A drop characteristic may then be determined from the drop detector for each ink-jet nozzle. Drop characteristics for the nozzles across the printhead may be collated into a data set, and compared with a predetermined data set for a printhead having predetermined print behaviour to determine if and how the data sets differ in terms of the pattern of drop characteristics across the printheads. If the data sets differ, a recovery strategy may be selected based how the data sets differ in terms of the pattern of drop characteristics across the printheads. A system and computer readable medium are also described herein.

公开(公告)号：US20180222182A1

公开(公告)日：2018-08-09

申请号：US15748141

申请日：2015-10-23

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

Inventor： Antonio Gracia Verdugo ,  Mauricio Seras Franzoso ,  Joan Jorba Closa

IPC: B41J2/045 ,  B41J2/12

CPC classification number: B41J2/04561 ,  B41J2/04505 ,  B41J2/04508 ,  B41J2/04558 ,  B41J2/0456 ,  B41J2/04586 ,  B41J2/12 ,  B41J25/308

Abstract: Herein is described a method involving a drop detector. The method may comprise: ejecting ink drops from the nozzles on a printhead toward a drop detector. A drop characteristic may then be determined from the drop detector for each ink-jet nozzle. Drop characteristics for the nozzles across the printhead may be collated into a data set, and compared with a predetermined data set for a printhead having predetermined print behaviour to determine if and how the data sets differ in terms of the pattern of drop characteristics across the printheads. If the data sets differ, a recovery strategy may be selected based how the data sets differ in terms of the pattern of drop characteristics across the printheads. A system and computer readable medium are also described herein.