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1. (WO2018080467) PRINTING APPARATUS AND PRINT MASK GENERATION

Pub. No.:    WO/2018/080467    International Application No.:    PCT/US2016/058779
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Thu Oct 27 01:59:59 CEST 2016
IPC: G06F 3/12
B41J 29/38
B41J 2/005
Applicants: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventors: BLANCH PINOL, Marta
AMELA, Eduardo
CANTO ESTANY, Diana
Title: PRINTING APPARATUS AND PRINT MASK GENERATION
Abstract:
A printing apparatus comprises a print head to print an image by scanning the print head across a print medium in a first direction and in a second direction, the second direction being opposite to the first direction. The print head includes an array of nozzles, the array comprising a first group of nozzles and a second group of nozzles which are arranged along the length of the array of nozzles. A controller controls the print head to eject print agent from a first number of nozzles of the first group of nozzles when scanning the print head in the first direction and from a first number of nozzles of the second group of nozzles when scanning the print head in the second direction; and further to eject print agent from a second number of nozzles of the first group of nozzles when scanning the print head in the second direction wherein the second number of nozzles is greater than one and less than the first number of nozzles of the first group of nozzles.