公开(公告)号：US09908326B2

公开(公告)日：2018-03-06

申请号：US15304603

申请日：2014-04-24

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

Inventor： Clayton L Holstun ,  Kelly Ronk ,  James A Feinn

IPC: B41J2/045 ,  B41J2/155

CPC classification number: B41J2/04528 ,  B41J2/04541 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04596 ,  B41J2/04598 ,  B41J2/155 ,  B41J2202/08

Abstract: According to an example, in a method for enhancing temperature distribution uniformity across a printer die, in which the printer die includes a plurality of drop generators arranged in a plurality of columns, a warming map that identifies the drop generators of the plurality of drop generators that are to be supplied with warming pulses to enhance temperature distribution uniformity across the printer die may be accessed. The warming map may identify a non-uniform distribution of the drop generators across a column of the plurality of columns. In addition, the warming map may be implemented to supply the drop generators identified in the warming map as the drop generators that are to receive the warming pulses.

公开(公告)号：US20230025124A1

公开(公告)日：2023-01-26

申请号：US17781535

申请日：2019-12-06

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

Inventor： Jacob Lum ,  James A Feinn ,  Mengqian Lu

IPC: B41J2/18 ,  B41J2/175

Abstract: An example recirculation fluid ejection device includes a first unit droplet generator including a first actuator and a first nozzle between a first and a second fluid feed hole, the first fluid feed hole located on a first channel and the second fluid feed hole and a first pump located on a second channel. The example device includes a second unit droplet generator including a second actuator and a second nozzle between a third and a fourth fluid feed hole, the third feed hole located on a third channel and the fourth fluid feed hole and a second pump located on a fourth channel. The first and the second actuators eject fluid at substantially the same backpressure. A first pressure measurable at an inlet of the first channel and the third channel are different from a second pressure measurable at an outlet of the second channel and the fourth channel.

公开(公告)号：US20170043574A1

公开(公告)日：2017-02-16

申请号：US15304603

申请日：2014-04-24

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

Inventor： Clayton L Holstun ,  Kelly Ronk ,  James A Feinn

IPC: B41J2/045 ,  B41J2/155

CPC classification number: B41J2/04528 ,  B41J2/04541 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04596 ,  B41J2/04598 ,  B41J2/155 ,  B41J2202/08

Abstract: According to an example, in a method for enhancing temperature distribution uniformity across a printer die, in which the printer die includes a plurality of drop generators arranged in a plurality of columns, a warming map that identifies the drop generators of the plurality of drop generators that are to be supplied with warming pulses to enhance temperature distribution uniformity across the printer die may be accessed. The warming map may identify a non-uniform distribution of the drop generators across a column of the plurality of columns. In addition, the warming map may be implemented to supply the drop generators identified in the warming map as the drop generators that are to receive the warming pulses.

Abstract translation: 根据一个实例，在一种用于提高打印机管芯的温度分布均匀性的方法中，其中打印机管芯包括多个排列成多列的液滴发生器，其中识别出多个液滴发生器的液滴发生器 为了提高整个印刷机模具的温度分布均匀性，可以获得加温脉冲。 变暖图可以识别多个列中的色谱柱发生器的不均匀分布。 此外，可以实施升温图，以将在升温图中识别的液滴发生器提供为用于接收加温脉冲的液滴发生器。