公开(公告)号：WO2020263222A1

公开(公告)日：2020-12-30

申请号：PCT/US2019/038886

申请日：2019-06-25

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY L.P.

Inventor： LOPEZ ALVAREZ, Miguel Angel

IPC: B41J2/525 ,  H04N1/60

Abstract: Aspects of the present disclosure relate to color printing calibration. In a particular example, an apparatus includes an output circuit to print a color target for a particular lot of printing material, a calibration circuit, and an identifier circuit. The calibration circuit may identify color values for the color target, determine a plurality of color correction values for the particular lot of printing material based on the identified color values, and generate a color corrections map including the determined color correction values for the particular lot of printing material. The identifier circuit may generate an identifier corresponding with the color corrections map, identifying a location of the color corrections map in a network- accessible table for retrieval and calibration of printing devices using the particular lot of printing material.

公开(公告)号：WO2019240762A9

公开(公告)日：2019-12-19

申请号：PCT/US2018/036947

申请日：2018-06-11

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

Inventor： TASTL, Ingeborg ,  LOPEZ ALVAREZ, Miguel Angel ,  SCHRAMM, Morgan T. ,  ROCA VILA, Jordi ,  SHEPHERD, Matthew A.

IPC: G06K15/00 ,  G06F3/12 ,  B29C64/386

Abstract: A system for presenting a soft-proof of a three-dimensional (3D) printed part may include a processor, and a memory device communicatively coupled to the processor. The system may also include a communication link to support communication with a 3D printing device, and computer usable program code to, when executed by the processor, retrieve data from the 3D printing device defining at least one capability of the 3D printing device that affects an appearance of a part when printed. The system may also include an application programming interface (API) to provide data defining generation of a soft-proof of the part based on the at least one capability of the 3D printing device, the soft-proof of the part depicting characteristics of the part as the part appears as printed.

公开(公告)号：WO2019177583A1

公开(公告)日：2019-09-19

申请号：PCT/US2018/022081

申请日：2018-03-13

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

Inventor： LOPEZ ALVAREZ, Miguel Angel ,  LIU, Hsue-Yang ,  GONDEK, Jay S.

IPC: B41J29/393 ,  H04N1/60

Abstract: Color values are measured for a set of color targets printed by a reference printing device on a medium of a reference media type. A different printing device prints a subset of the set of color targets on another medium of this reference media type. The color values of the subset of color targets printed by the different printing device are measured, and the different device calibrated based on the measured color values for both the set that the reference printing device printed and the subset that the different device printed. The different printing device can then also be calibrated for a different media type, based on a transformation of the set of color targets printed by the reference printing device on a medium of the different media type relative to the set of color targets printed by the reference device on the medium of the reference media type.

公开(公告)号：WO2021002872A1

公开(公告)日：2021-01-07

申请号：PCT/US2019/040614

申请日：2019-07-03

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

Inventor： LOPEZ ALVAREZ, Miguel Angel

IPC: B41J2/32 ,  H04N1/60

Abstract: A multicolor thermal printer comprising a controller, a thermal printhead, multicolor thermal paper, a monochrome lightness sensor, and a calibration subsystem is described. The calibration subsystem prints a calibration target that is scanned by the monochrome lightness sensor to determine if color crosstalk is present. If color crosstalk is present, the calibration subsystem decreases the contone range of affected colors and saves the new calibration settings.

公开(公告)号：WO2020251575A1

公开(公告)日：2020-12-17

申请号：PCT/US2019/036908

申请日：2019-06-13

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

Inventor： LOPEZ ALVAREZ, Miguel Angel ,  GONDEK, Jay S. ,  CANTRELL, John J. ,  WU, Yifeng

IPC: B41J2/315 ,  H04N1/60 ,  B41J29/393

Abstract: An example system for thermal energy determination can include a first controller comprising a processor and a non-transitory machine-readable medium (MRM) communicatively coupled to the processor. The non-transitory MRM can include instructions executable by the processor to cause the processor to receive relative humidity information of an environment of a thermal printing device, determine a colormap to a print media of the thermal printing device based on the relative humidity, and determine a particular thermal energy to apply to the print media based on the determined colormap.

公开(公告)号：WO2019240762A1

公开(公告)日：2019-12-19

申请号：PCT/US2018/036947

申请日：2018-06-11

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

Inventor： TASTL, Ingeborg ,  LOPEZ ALVAREZ, Miguel Angel ,  SCHRAMM, Morgan T. ,  ROCA VILA, Jordi ,  SHEPHERD, Matthew A.

IPC: G06K15/00 ,  G06F3/12 ,  B29C64/386

Abstract: A system for presenting a soft-proof of a three-dimensional (3D) printed part may include a processor, and a memory device communicatively coupled to the processor. The system may also include a communication link to support communication with a 3D printing device, and computer usable program code to, when executed by the processor, retrieve data from the 3D printing device defining at least one capability of the 3D printing device that affects an appearance of a part when printed. The system may also include an application programming interface (API) to provide data defining generation of a soft-proof of the part based on the at least one capability of the 3D printing device, the soft-proof of the part depicting characteristics of the part as the part appears as printed.

公开(公告)号：WO2019125451A1

公开(公告)日：2019-06-27

申请号：PCT/US2017/067745

申请日：2017-12-20

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

Inventor： LOPEZ ALVAREZ, Miguel Angel ,  SCHRAMM, Morgan T. ,  CHENG, Xin ,  GONDEK, Jay S.

IPC: H04N1/60 ,  B29C64/393

Abstract: In some examples, with respect to three-dimensional printer color management, three-dimensional printer native space coordinates of a three-dimensional printer may be mapped to three-dimensional printer printing agent space coordinates of the three-dimensional printer. The three-dimensional printer printing agent space coordinates may be mapped to color space coordinates. The color space coordinates may be mapped to two-dimensional printer printing agent space coordinates of a two-dimensional printer. The two-dimensional printer printing agent space coordinates may be mapped to two-dimensional printer native space coordinates of the two-dimensional printer. A color management protocol of the two-dimensional printer may be utilized, based on the mapping of the three-dimensional printer native space coordinates to the two-dimensional printer native space coordinates, for the three-dimensional printer to print a three-dimensional object.