公开(公告)号：US20170361606A1

公开(公告)日：2017-12-21

申请号：US15541392

申请日：2015-01-30

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

Inventor： Frederic Barnel ,  David Toussaint

IPC: B41J2/045 ,  B41J25/308

CPC classification number: B41J2/04506 ,  B41J2/04586 ,  B41J2/15 ,  B41J2/2135 ,  B41J11/02 ,  B41J25/308

Abstract: In one example, an apparatus is described, which includes a platen locating the print medium, at least one printhead for marking on the print medium, a carriage holding the at least one printhead, a sensor at least partially mounted to the carriage to measure a printhead-to-platen spacing (PPS) along scanning axis during scanning, and an integrated circuit including a dynamic compensation module and a PPS analysis module to delay firing of printing fluid drops from the at least one printhead to compensate platen defects based on the measured PPS.

公开(公告)号：US20170008299A1

公开(公告)日：2017-01-12

申请号：US15113490

申请日：2014-01-24

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

Inventor： Antonio Gracia Verdugo ,  David Toussaint ,  Oriol Borrell Avila

IPC: B41J2/21 ,  B41J29/393

CPC classification number: B41J2/2103 ,  B41J2/2114 ,  B41J29/393

Abstract: An example method for determining an amount of a translucent printing fluid in accordance with the present disclosure is provided. The example method comprises printing a plurality of test patterns with different proportions of colored and translucent printing fluids. The plurality of test patterns comprise a first area and a second area contiguous with the first area, wherein a color of the second area is different from a color of the first area. Migration characteristics of the plurality of test patterns are analyzed to determine an amount of translucent printing fluid to use for a successive printing operation.

Abstract translation: 提供了用于确定根据本公开的半透明打印流体的量的示例性方法。 该示例性方法包括印刷具有不同比例的彩色和半透明印刷液体的多个测试图案。 多个测试图案包括与第一区域相邻的第一区域和第二区域，其中第二区域的颜色不同于第一区域的颜色。 分析多个测试图案的迁移特性以确定用于连续打印操作的半透明打印流体的量。