US 12,485,670 B2
Fluid ejection devices with reduced crosstalk
Christoph Menzel, New London, NH (US); Kevin von Essen, San Jose, CA (US); Steven H. Barss, Wilmot Flat, NH (US); Mats G. Ottosson, Saltsjo-Boo (SE); and Darren T. Imai, Los Gatos, CA (US)
Assigned to FUJIFILM Dimatix, Inc., Lebanon, NH (US)
Filed by FUJIFILM Dimatix, Inc., Lebanon, NH (US)
Filed on Oct. 12, 2023, as Appl. No. 18/379,338.
Application 18/379,338 is a division of application No. 17/965,189, filed on Oct. 13, 2022, granted, now 11,865,837.
Application 16/013,835 is a division of application No. 14/695,525, filed on Apr. 24, 2015, granted, now 10,022,957, issued on Jul. 17, 2018.
Application 17/965,189 is a continuation of application No. 17/170,190, filed on Feb. 8, 2021, granted, now 11,498,330, issued on Nov. 15, 2022.
Application 17/170,190 is a continuation of application No. 16/013,835, filed on Jun. 20, 2018, granted, now 10,913,264, issued on Feb. 9, 2021.
Prior Publication US 2024/0042755 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B41J 2/055 (2006.01); B41J 2/045 (2006.01); B41J 2/14 (2006.01); B41J 2/16 (2006.01)
CPC B41J 2/055 (2013.01) [B41J 2/04525 (2013.01); B41J 2/14233 (2013.01); B41J 2/1433 (2013.01); B41J 2/161 (2013.01); B41J 2/162 (2013.01); B41J 2/1623 (2013.01); B41J 2/1628 (2013.01); B41J 2/1629 (2013.01); B41J 2/1631 (2013.01); B41J 2/1632 (2013.01); B41J 2/164 (2013.01); B41J 2002/14459 (2013.01); B41J 2202/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of fluid ejection, the method comprising:
flowing fluid along a feed channel and into a pumping chamber; and
operating an actuator to cause fluid to be ejected from the pumping chamber and through a nozzle defined in a substrate and fluidically connected to the pumping chamber,
in which operating the actuator causes deflection of a membrane disposed between the feed channel and one or more recesses defined in a wall of the feed channel, in which the membrane seals the recess from the feed channel, and in which the recess is vented to external atmosphere via a fluidic connection between the recess and an opening in a bottom surface of the substrate,
wherein the one or more recesses are provided in a density between 10 recesses/mm2 and 50 recesses/mm2 in the substrate.