公开(公告)号：US11449283B1

公开(公告)日：2022-09-20

申请号：US17514809

申请日：2021-10-29

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

Inventor： Javier Maestro Garcia ,  Pau Costal Fornells ,  Sergio Etchebehere Juan ,  Pere Josep Canti Nicolas ,  Jan Morovic ,  Peter Morovic

IPC: G06F3/12 ,  H04N1/52 ,  G06K15/10

Abstract: A hybrid-masked halftone area Neugebauer separation (HANS) pipeline for a printing system is constructed. A number of Neugebauer Primaries (NPs) of and a halftone pattern to employ within the pipeline are selected according to specified ink interaction constraints during printing system ink output onto media, at a native resolution of the printing system. An NP area coverage (NPac)-based lookup table (LUT) and a pre-LUT color profile to employ within the pipeline are constructed according to first specified ink coverage and usage constraints during the ink output, at the native resolution. LUT post-processing and post-halftone pattern masking to employ within the pipeline are determined according to second specified ink coverage and usage constraints during the ink output, at the native resolution.

公开(公告)号：US11683437B1

公开(公告)日：2023-06-20

申请号：US17837800

申请日：2022-06-10

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

Inventor： Pau Costal Fornells ,  Peter Morovic ,  Javier Maestro Garcia ,  Pere Josep Canti Nicolas ,  Sergio Etchebehere Juan

IPC: H04N1/409 ,  G06K15/02 ,  H04N1/405 ,  G06K15/10 ,  B41J2/505 ,  B41J2/205 ,  B41J2/21

CPC classification number: H04N1/409 ,  G06K15/107 ,  G06K15/1881 ,  H04N1/405 ,  B41J2/2054 ,  B41J2/2132 ,  B41J2/5056

Abstract: Mask entries for each of a plurality of passes over which print fluid drops are to be dispensed for printing an image are generated based on different types of masks and based on image data for the image. Print fluid drop dispensation for a pixel for which the mask entries for a given pass specify repeated print fluid drop dispensation is moved to a mask entry for an adjacent pass that does not specify print fluid drop dispensation for the pixel. Ejection of print fluid to print the image is caused based on the generated mask entries.

公开(公告)号：US20230129355A1

公开(公告)日：2023-04-27

申请号：US17452141

申请日：2021-10-25

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

Inventor： Javier Maestro Garcia ,  Pau Costal Fornells ,  Peter Morovic ,  Sergio Etchebehere Juan ,  Pere Josep Canti Nicolas

IPC: G06F3/12 ,  H04N1/52 ,  H04N1/60 ,  G06K15/10

Abstract: In some examples, a system receives image data for printing by a printer, and for a given colorant of a plurality of colorants to be used to print an image based on the image data, selects a plurality of different types of masks to use when dispensing printing fluid drops of the given colorant when printing the image. The system generates control data for printing the image using the selected plurality of different types of masks.