Fluid ejection devices with reduced crosstalk
AssigneeFUJIFILM Dimatix, Inc.
InventorsChristoph Menzel, Kevin von Essen, Steven H. Barss, Mats G. Ottosson, Darren T. Imai
Life of this patent
Estimating the term…
Abstract
A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel.
Claims17
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.
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:
- a first portion of the fluid to be ejected from the nozzle and a second portion of the fluid to flow through an outlet passage to a second feed channel,
- 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, and
- deflection of a second membrane disposed between the second feed channel and a second recess of the one or more recesses defined in a wall of the second feed channel.
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 membrane has a thickness between 0.5 μm and 5 μm.
Dependencies are inferred from the claim text.